bretton.dev / coves-mobile
Main coves client
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Merge branch 'feat/comments-provider-cache'

Add per-post CommentsProvider caching with LRU eviction for instant
back-navigation, scroll position restoration, and draft text preservation.

bretton.dev 6f9cfdd1 149dbbff

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unified split
Changed files
+897 -664
lib
main.dart
providers
comments_provider.dart
screens
compose
reply_screen.dart
home
focused_thread_screen.dart
post_detail_screen.dart
services
comments_provider_cache.dart
test
providers
comments_provider_test.dart
feed_provider_test.dart
test_helpers
mock_providers.dart
widgets
feed_screen_test.dart
focused_thread_screen_test.dart
+16 -19
lib/main.dart 
···

       
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import 'constants/app_colors.dart';


     

       
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import 'models/post.dart';


     

       
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import 'providers/auth_provider.dart';


     

       
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import 'providers/comments_provider.dart';


     

       
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import 'providers/feed_provider.dart';


     

       
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import 'providers/vote_provider.dart';


     

       
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import 'screens/auth/login_screen.dart';


     
···

       
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import 'screens/home/post_detail_screen.dart';


     

       
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import 'screens/landing_screen.dart';


     

       
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import 'services/comment_service.dart';


     

       

       

       
     

       
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import 'services/streamable_service.dart';


     

       
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import 'services/vote_service.dart';


     

       
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import 'widgets/loading_error_states.dart';


     
···

       
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            return previous ?? FeedProvider(auth, voteProvider: vote);


     

       
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          },


     

       
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        ),


     

       
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        ChangeNotifierProxyProvider2<


     

       
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          AuthProvider,


     

       
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          VoteProvider,


     

       
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          CommentsProvider


     

       
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        >(


     

       
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          create:


     

       
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              (context) => CommentsProvider(


     

       
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                authProvider,


     

       
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                voteProvider: context.read<VoteProvider>(),


     

       
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                commentService: commentService,


     

       
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              ),


     

       
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          update: (context, auth, vote, previous) {


     

       
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            // Reuse existing provider to maintain state across rebuilds


     

       
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            return previous ??


     

       
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                CommentsProvider(


     

       
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                  auth,


     

       
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                  voteProvider: vote,


     

       
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                  commentService: commentService,


     

       
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                );


     

       
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          },


     

       

       

       
     

       
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        ),


     

       
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        // StreamableService for video embeds


     

       
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        Provider<StreamableService>(create: (_) => StreamableService()),


     
···

       
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import 'constants/app_colors.dart';


     

       
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import 'models/post.dart';


     

       
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import 'providers/auth_provider.dart';


     

       

       

       
     

       
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import 'providers/feed_provider.dart';


     

       
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import 'providers/vote_provider.dart';


     

       
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import 'screens/auth/login_screen.dart';


     
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import 'screens/home/post_detail_screen.dart';


     

       
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import 'screens/landing_screen.dart';


     

       
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import 'services/comment_service.dart';


     

       
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+

       
import 'services/comments_provider_cache.dart';


     

       
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import 'services/streamable_service.dart';


     

       
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import 'services/vote_service.dart';


     

       
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import 'widgets/loading_error_states.dart';


     
···

       
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            return previous ?? FeedProvider(auth, voteProvider: vote);


     

       
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          },


     

       
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        ),


     

       
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+

       
        // CommentsProviderCache manages per-post CommentsProvider instances


     

       
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        // with LRU eviction and sign-out cleanup


     

       
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        ProxyProvider2<AuthProvider, VoteProvider, CommentsProviderCache>(


     

       
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          create: (context) => CommentsProviderCache(


     

       
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            authProvider: authProvider,


     

       
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            voteProvider: context.read<VoteProvider>(),


     

       
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            commentService: commentService,


     

       
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          ),


     

       

       

       
     

       

       

       
     

       

       

       
     

       
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          update: (context, auth, vote, previous) {


     

       
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            // Reuse existing cache


     

       
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            return previous ?? CommentsProviderCache(


     

       
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              authProvider: auth,


     

       
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              voteProvider: vote,


     

       
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              commentService: commentService,


     

       
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            );


     

       

       

       
     

       
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          },


     

       
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          dispose: (_, cache) => cache.dispose(),


     

       
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        ),


     

       
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        // StreamableService for video embeds


     

       
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        Provider<StreamableService>(create: (_) => StreamableService()),
+122 -111
lib/providers/comments_provider.dart 
···

       
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/// Comments Provider


     

       
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///


     

       
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/// Manages comment state and fetching logic for a specific post.


     

       
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/// Supports sorting (hot/top/new), pagination, and vote integration.


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
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///


     

       
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/// IMPORTANT: Accepts AuthProvider reference to fetch fresh access


     

       
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/// tokens before each authenticated request (critical for atProto OAuth


     
···

       
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class CommentsProvider with ChangeNotifier {


     

       
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  CommentsProvider(


     

       
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    this._authProvider, {


     

       

       

       
     

       

       

       
     

       
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    CovesApiService? apiService,


     

       
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    VoteProvider? voteProvider,


     

       
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    CommentService? commentService,


     

       
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  }) : _voteProvider = voteProvider,


     

       

       

       
     

       

       

       
     

       
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       _commentService = commentService {


     

       
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    // Use injected service (for testing) or create new one (for production)


     

       
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    // Pass token getter, refresh handler, and sign out handler to API service


     
···

       
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          tokenRefresher: _authProvider.refreshToken,


     

       
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          signOutHandler: _authProvider.signOut,


     

       
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        );


     

       
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    // Track initial auth state


     

       
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    _wasAuthenticated = _authProvider.isAuthenticated;


     

       
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    // Listen to auth state changes and clear comments on sign-out


     

       
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    _authProvider.addListener(_onAuthChanged);


     

       
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  }


     

       
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  /// Maximum comment length in characters (matches backend limit)


     

       
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  /// Note: This counts Unicode grapheme clusters, so emojis count correctly


     

       
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  static const int maxCommentLength = 10000;


     

       
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  /// Handle authentication state changes


     

       
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  ///


     

       
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  /// Clears comment state when user signs out to prevent privacy issues.


     

       
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  void _onAuthChanged() {


     

       
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    final isAuthenticated = _authProvider.isAuthenticated;


     

       
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    // Only clear if transitioning from authenticated → unauthenticated


     

       
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    if (_wasAuthenticated && !isAuthenticated && _comments.isNotEmpty) {


     

       
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      if (kDebugMode) {


     

       
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        debugPrint('🔒 User signed out - clearing comments');


     

       
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      }


     

       
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      reset();


     

       
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    }


     

       
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    // Update tracked state


     

       
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    _wasAuthenticated = isAuthenticated;


     

       
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  }


     

       
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  final AuthProvider _authProvider;


     

       
69

       
 

       
  late final CovesApiService _apiService;


     

       
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  final VoteProvider? _voteProvider;


     

       
71

       
 

       
  final CommentService? _commentService;


     

       
72

       
 

       



     

       
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  // Track previous auth state to detect transitions


     

       
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  bool _wasAuthenticated = false;


     

       

       

       
     

       
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76

       
 

       
  // Comment state


     

       
77

       
 

       
  List<ThreadViewComment> _comments = [];


     
···

       
84

       
 

       
  // Collapsed thread state - stores URIs of collapsed comments


     

       
85

       
 

       
  final Set<String> _collapsedComments = {};


     

       
86

       
 

       



     

       
87

       
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  // Current post being viewed


     

       
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  String? _postUri;


     

       
89

       
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  String? _postCid;


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
90

       
 

       



     

       
91

       
 

       
  // Comment configuration


     

       
92

       
 

       
  String _sort = 'hot';


     
···

       
99

       
 

       
  Timer? _timeUpdateTimer;


     

       
100

       
 

       
  final ValueNotifier<DateTime?> _currentTimeNotifier = ValueNotifier(null);


     

       
101

       
 

       



     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
102

       
 

       
  // Getters


     

       

       

       
     

       

       

       
     

       
103

       
 

       
  List<ThreadViewComment> get comments => _comments;


     

       
104

       
 

       
  bool get isLoading => _isLoading;


     

       
105

       
 

       
  bool get isLoadingMore => _isLoadingMore;


     
···

       
109

       
 

       
  String? get timeframe => _timeframe;


     

       
110

       
 

       
  ValueNotifier<DateTime?> get currentTimeNotifier => _currentTimeNotifier;


     

       
111

       
 

       
  Set<String> get collapsedComments => Set.unmodifiable(_collapsedComments);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
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113

       
 

       
  /// Toggle collapsed state for a comment thread


     

       
114

       
 

       
  ///


     
···

       
120

       
 

       
    } else {


     

       
121

       
 

       
      _collapsedComments.add(uri);


     

       
122

       
 

       
    }


     

       
123

       
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    notifyListeners();


     

       
124

       
 

       
  }


     

       
125

       
 

       



     

       
126

       
 

       
  /// Check if a specific comment is collapsed


     
···

       
161

       
 

       
    }


     

       
162

       
 

       
  }


     

       
163

       
 

       



     

       
164

       
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  /// Load comments for a specific post


     

       
165

       
 

       
  ///


     

       
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  /// Parameters:


     

       
167

       
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  /// - [postUri]: AT-URI of the post


     

       
168

       
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  /// - [postCid]: CID of the post (needed for creating comments)


     

       
169

       
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  /// - [refresh]: Whether to refresh from the beginning


     

       
170

       
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  Future<void> loadComments({


     

       
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    required String postUri,


     

       
172

       
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    required String postCid,


     

       
173

       
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    bool refresh = false,


     

       
174

       
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  }) async {


     

       
175

       
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    // If loading for a different post, reset state


     

       
176

       
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    if (postUri != _postUri) {


     

       
177

       
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      reset();


     

       
178

       
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      _postUri = postUri;


     

       
179

       
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      _postCid = postCid;


     

       
180

       
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    }


     

       
181

       
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182

       
 

       
    // If already loading, schedule a refresh to happen after current load


     

       
183

       
 

       
    if (_isLoading || _isLoadingMore) {


     

       
184

       
 

       
      if (refresh) {


     
···

       
200

       
 

       
      } else {


     

       
201

       
 

       
        _isLoadingMore = true;


     

       
202

       
 

       
      }


     

       
203

       
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      notifyListeners();


     

       
204

       
 

       



     

       
205

       
 

       
      if (kDebugMode) {


     

       
206

       
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        debugPrint('📡 Fetching comments: sort=$_sort, postUri=$postUri');


     

       
207

       
 

       
      }


     

       
208

       
 

       



     

       
209

       
 

       
      final response = await _apiService.getComments(


     

       
210

       
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        postUri: postUri,


     

       
211

       
 

       
        sort: _sort,


     

       
212

       
 

       
        timeframe: _timeframe,


     

       
213

       
 

       
        cursor: refresh ? null : _cursor,


     

       
214

       
 

       
      );


     

       
215

       
 

       



     

       

       

       
     

       

       

       
     

       
216

       
 

       
      // Only update state after successful fetch


     

       
217

       
 

       
      if (refresh) {


     

       
218

       
 

       
        _comments = response.comments;


     

       

       

       
     

       
219

       
 

       
      } else {


     

       
220

       
 

       
        // Create new list instance to trigger rebuilds


     

       
221

       
 

       
        _comments = [..._comments, ...response.comments];


     
···

       
246

       
 

       
        startTimeUpdates();


     

       
247

       
 

       
      }


     

       
248

       
 

       
    } on Exception catch (e) {


     

       

       

       
     

       
249

       
 

       
      _error = e.toString();


     

       
250

       
 

       
      if (kDebugMode) {


     

       
251

       
 

       
        debugPrint('❌ Failed to fetch comments: $e');


     

       
252

       
 

       
      }


     

       
253

       
 

       
    } finally {


     

       

       

       
     

       
254

       
 

       
      _isLoading = false;


     

       
255

       
 

       
      _isLoadingMore = false;


     

       
256

       
-

       
      notifyListeners();


     

       
257

       
 

       



     

       
258

       
 

       
      // If a refresh was scheduled during this load, execute it now


     

       
259

       
-

       
      if (_pendingRefresh && _postUri != null) {


     

       
260

       
 

       
        if (kDebugMode) {


     

       
261

       
 

       
          debugPrint('🔄 Executing pending refresh');


     

       
262

       
 

       
        }


     

       
263

       
 

       
        _pendingRefresh = false;


     

       
264

       
 

       
        // Schedule refresh without awaiting to avoid blocking


     

       
265

       
 

       
        // This is intentional - we want the refresh to happen asynchronously


     

       
266

       
-

       
        unawaited(


     

       
267

       
-

       
          loadComments(postUri: _postUri!, postCid: _postCid!, refresh: true),


     

       
268

       
-

       
        );


     

       
269

       
 

       
      }


     

       
270

       
 

       
    }


     

       
271

       
 

       
  }


     
···

       
274

       
 

       
  ///


     

       
275

       
 

       
  /// Reloads comments from the beginning for the current post.


     

       
276

       
 

       
  Future<void> refreshComments() async {


     

       
277

       
-

       
    if (_postUri == null || _postCid == null) {


     

       
278

       
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      if (kDebugMode) {


     

       
279

       
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        debugPrint('⚠️ Cannot refresh - no post loaded');


     

       
280

       
-

       
      }


     

       
281

       
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      return;


     

       
282

       
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    }


     

       
283

       
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    await loadComments(postUri: _postUri!, postCid: _postCid!, refresh: true);


     

       
284

       
 

       
  }


     

       
285

       
 

       



     

       
286

       
 

       
  /// Load more comments (pagination)


     

       
287

       
 

       
  Future<void> loadMoreComments() async {


     

       
288

       
-

       
    if (!_hasMore || _isLoadingMore || _postUri == null || _postCid == null) {


     

       
289

       
 

       
      return;


     

       
290

       
 

       
    }


     

       
291

       
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    await loadComments(postUri: _postUri!, postCid: _postCid!);


     

       
292

       
 

       
  }


     

       
293

       
 

       



     

       
294

       
 

       
  /// Change sort order


     
···

       
305

       
 

       



     

       
306

       
 

       
    final previousSort = _sort;


     

       
307

       
 

       
    _sort = newSort;


     

       
308

       
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    notifyListeners();


     

       
309

       
 

       



     

       
310

       
 

       
    // Reload comments with new sort


     

       
311

       
-

       
    if (_postUri != null && _postCid != null) {


     

       
312

       
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      try {


     

       
313

       
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        await loadComments(


     

       
314

       
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          postUri: _postUri!,


     

       
315

       
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          postCid: _postCid!,


     

       
316

       
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          refresh: true,


     

       
317

       
-

       
        );


     

       
318

       
-

       
        return true;


     

       
319

       
-

       
      } on Exception catch (e) {


     

       
320

       
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        // Revert to previous sort option on failure


     

       
321

       
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        _sort = previousSort;


     

       
322

       
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        notifyListeners();


     

       
323

       
 

       



     

       
324

       
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        if (kDebugMode) {


     

       
325

       
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          debugPrint('Failed to apply sort option: $e');


     

       
326

       
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        }


     

       
327

       
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328

       
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        return false;


     

       
329

       
 

       
      }


     

       
330

       
-

       
    }


     

       
331

       
 

       



     

       
332

       
-

       
    return true;


     

       

       

       
     

       
333

       
 

       
  }


     

       
334

       
 

       



     

       
335

       
 

       
  /// Vote on a comment


     
···

       
415

       
 

       



     

       
416

       
 

       
    if (_commentService == null) {


     

       
417

       
 

       
      throw ApiException('CommentService not available');


     

       
418

       
-

       
    }


     

       
419

       
-

       



     

       
420

       
-

       
    if (_postUri == null || _postCid == null) {


     

       
421

       
-

       
      throw ApiException('No post loaded - cannot create comment');


     

       
422

       
 

       
    }


     

       
423

       
 

       



     

       
424

       
 

       
    // Root is always the original post


     

       
425

       
-

       
    final rootUri = _postUri!;


     

       
426

       
-

       
    final rootCid = _postCid!;


     

       
427

       
 

       



     

       
428

       
 

       
    // Parent depends on whether this is a top-level or nested reply


     

       
429

       
 

       
    final String parentUri;


     
···

       
492

       
 

       
  /// Retry loading after error


     

       
493

       
 

       
  Future<void> retry() async {


     

       
494

       
 

       
    _error = null;


     

       
495

       
-

       
    if (_postUri != null && _postCid != null) {


     

       
496

       
-

       
      await loadComments(postUri: _postUri!, postCid: _postCid!, refresh: true);


     

       
497

       
-

       
    }


     

       
498

       
 

       
  }


     

       
499

       
 

       



     

       
500

       
 

       
  /// Clear error


     

       
501

       
 

       
  void clearError() {


     

       
502

       
 

       
    _error = null;


     

       
503

       
-

       
    notifyListeners();


     

       
504

       
-

       
  }


     

       
505

       
-

       



     

       
506

       
-

       
  /// Reset comment state


     

       
507

       
-

       
  void reset() {


     

       
508

       
-

       
    _comments = [];


     

       
509

       
-

       
    _cursor = null;


     

       
510

       
-

       
    _hasMore = true;


     

       
511

       
-

       
    _error = null;


     

       
512

       
-

       
    _isLoading = false;


     

       
513

       
-

       
    _isLoadingMore = false;


     

       
514

       
-

       
    _postUri = null;


     

       
515

       
-

       
    _postCid = null;


     

       
516

       
-

       
    _pendingRefresh = false;


     

       
517

       
-

       
    _collapsedComments.clear();


     

       
518

       
-

       
    notifyListeners();


     

       
519

       
 

       
  }


     

       
520

       
 

       



     

       
521

       
 

       
  @override


     

       
522

       
 

       
  void dispose() {


     

       

       

       
     

       
523

       
 

       
    // Stop time updates and cancel timer (also sets value to null)


     

       
524

       
 

       
    stopTimeUpdates();


     

       
525

       
-

       
    // Remove auth listener to prevent memory leaks


     

       
526

       
-

       
    _authProvider.removeListener(_onAuthChanged);


     

       
527

       
 

       
    _apiService.dispose();


     

       
528

       
 

       
    // Dispose the ValueNotifier last


     

       
529

       
 

       
    _currentTimeNotifier.dispose();


     
···

       
12

       
 

       
/// Comments Provider


     

       
13

       
 

       
///


     

       
14

       
 

       
/// Manages comment state and fetching logic for a specific post.


     

       
15

       
+

       
/// Each provider instance is bound to a single post (immutable postUri/postCid).


     

       
16

       
+

       
/// Supports sorting (hot/top/new), pagination, vote integration, scroll position,


     

       
17

       
+

       
/// and draft text preservation.


     

       
18

       
+

       
///


     

       
19

       
+

       
/// IMPORTANT: Provider instances are managed by CommentsProviderCache which


     

       
20

       
+

       
/// handles LRU eviction and sign-out cleanup. Do not create directly in widgets.


     

       
21

       
 

       
///


     

       
22

       
 

       
/// IMPORTANT: Accepts AuthProvider reference to fetch fresh access


     

       
23

       
 

       
/// tokens before each authenticated request (critical for atProto OAuth


     
···

       
25

       
 

       
class CommentsProvider with ChangeNotifier {


     

       
26

       
 

       
  CommentsProvider(


     

       
27

       
 

       
    this._authProvider, {


     

       
28

       
+

       
    required String postUri,


     

       
29

       
+

       
    required String postCid,


     

       
30

       
 

       
    CovesApiService? apiService,


     

       
31

       
 

       
    VoteProvider? voteProvider,


     

       
32

       
 

       
    CommentService? commentService,


     

       
33

       
+

       
  }) : _postUri = postUri,


     

       
34

       
+

       
       _postCid = postCid,


     

       
35

       
+

       
       _voteProvider = voteProvider,


     

       
36

       
 

       
       _commentService = commentService {


     

       
37

       
 

       
    // Use injected service (for testing) or create new one (for production)


     

       
38

       
 

       
    // Pass token getter, refresh handler, and sign out handler to API service


     
···

       
44

       
 

       
          tokenRefresher: _authProvider.refreshToken,


     

       
45

       
 

       
          signOutHandler: _authProvider.signOut,


     

       
46

       
 

       
        );


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
47

       
 

       
  }


     

       
48

       
 

       



     

       
49

       
 

       
  /// Maximum comment length in characters (matches backend limit)


     

       
50

       
 

       
  /// Note: This counts Unicode grapheme clusters, so emojis count correctly


     

       
51

       
 

       
  static const int maxCommentLength = 10000;


     

       
52

       
 

       



     

       
53

       
+

       
  /// Default staleness threshold for background refresh


     

       
54

       
+

       
  static const Duration stalenessThreshold = Duration(minutes: 5);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
55

       
 

       



     

       
56

       
 

       
  final AuthProvider _authProvider;


     

       
57

       
 

       
  late final CovesApiService _apiService;


     

       
58

       
 

       
  final VoteProvider? _voteProvider;


     

       
59

       
 

       
  final CommentService? _commentService;


     

       
60

       
 

       



     

       
61

       
+

       
  // Post context - immutable per provider instance


     

       
62

       
+

       
  final String _postUri;


     

       
63

       
+

       
  final String _postCid;


     

       
64

       
 

       



     

       
65

       
 

       
  // Comment state


     

       
66

       
 

       
  List<ThreadViewComment> _comments = [];


     
···

       
73

       
 

       
  // Collapsed thread state - stores URIs of collapsed comments


     

       
74

       
 

       
  final Set<String> _collapsedComments = {};


     

       
75

       
 

       



     

       
76

       
+

       
  // Scroll position state (replaces ScrollStateService for this post)


     

       
77

       
+

       
  double _scrollPosition = 0;


     

       
78

       
+

       



     

       
79

       
+

       
  // Draft reply text - stored per-parent-URI (null key = top-level reply to post)


     

       
80

       
+

       
  // This allows users to have separate drafts for different comments within the same post


     

       
81

       
+

       
  final Map<String?, String> _drafts = {};


     

       
82

       
+

       



     

       
83

       
+

       
  // Staleness tracking for background refresh


     

       
84

       
+

       
  DateTime? _lastRefreshTime;


     

       
85

       
 

       



     

       
86

       
 

       
  // Comment configuration


     

       
87

       
 

       
  String _sort = 'hot';


     
···

       
94

       
 

       
  Timer? _timeUpdateTimer;


     

       
95

       
 

       
  final ValueNotifier<DateTime?> _currentTimeNotifier = ValueNotifier(null);


     

       
96

       
 

       



     

       
97

       
+

       
  bool _isDisposed = false;


     

       
98

       
+

       



     

       
99

       
+

       
  void _safeNotifyListeners() {


     

       
100

       
+

       
    if (_isDisposed) return;


     

       
101

       
+

       
    notifyListeners();


     

       
102

       
+

       
  }


     

       
103

       
+

       



     

       
104

       
 

       
  // Getters


     

       
105

       
+

       
  String get postUri => _postUri;


     

       
106

       
+

       
  String get postCid => _postCid;


     

       
107

       
 

       
  List<ThreadViewComment> get comments => _comments;


     

       
108

       
 

       
  bool get isLoading => _isLoading;


     

       
109

       
 

       
  bool get isLoadingMore => _isLoadingMore;


     
···

       
113

       
 

       
  String? get timeframe => _timeframe;


     

       
114

       
 

       
  ValueNotifier<DateTime?> get currentTimeNotifier => _currentTimeNotifier;


     

       
115

       
 

       
  Set<String> get collapsedComments => Set.unmodifiable(_collapsedComments);


     

       
116

       
+

       
  double get scrollPosition => _scrollPosition;


     

       
117

       
+

       
  DateTime? get lastRefreshTime => _lastRefreshTime;


     

       
118

       
+

       



     

       
119

       
+

       
  /// Get draft text for a specific parent URI


     

       
120

       
+

       
  ///


     

       
121

       
+

       
  /// [parentUri] - URI of parent comment (null for top-level post reply)


     

       
122

       
+

       
  /// Returns the draft text, or empty string if no draft exists


     

       
123

       
+

       
  String getDraft({String? parentUri}) => _drafts[parentUri] ?? '';


     

       
124

       
+

       



     

       
125

       
+

       
  /// Legacy getters for backward compatibility


     

       
126

       
+

       
  /// @deprecated Use getDraft(parentUri: ...) instead


     

       
127

       
+

       
  String get draftText => _drafts.values.firstOrNull ?? '';


     

       
128

       
+

       
  String? get draftParentUri => _drafts.keys.firstOrNull;


     

       
129

       
+

       



     

       
130

       
+

       
  /// Check if cached data is stale and should be refreshed in background


     

       
131

       
+

       
  bool get isStale {


     

       
132

       
+

       
    if (_lastRefreshTime == null) {


     

       
133

       
+

       
      return true;


     

       
134

       
+

       
    }


     

       
135

       
+

       
    return DateTime.now().difference(_lastRefreshTime!) > stalenessThreshold;


     

       
136

       
+

       
  }


     

       
137

       
+

       



     

       
138

       
+

       
  /// Save scroll position (called on every scroll event)


     

       
139

       
+

       
  void saveScrollPosition(double position) {


     

       
140

       
+

       
    _scrollPosition = position;


     

       
141

       
+

       
    // No notifyListeners - this is passive state save


     

       
142

       
+

       
  }


     

       
143

       
+

       



     

       
144

       
+

       
  /// Save draft reply text


     

       
145

       
+

       
  ///


     

       
146

       
+

       
  /// [text] - The draft text content


     

       
147

       
+

       
  /// [parentUri] - URI of parent comment (null for top-level post reply)


     

       
148

       
+

       
  ///


     

       
149

       
+

       
  /// Each parent URI gets its own draft, so switching between replies


     

       
150

       
+

       
  /// preserves drafts for each context.


     

       
151

       
+

       
  void saveDraft(String text, {String? parentUri}) {


     

       
152

       
+

       
    if (text.trim().isEmpty) {


     

       
153

       
+

       
      // Remove empty drafts to avoid clutter


     

       
154

       
+

       
      _drafts.remove(parentUri);


     

       
155

       
+

       
    } else {


     

       
156

       
+

       
      _drafts[parentUri] = text;


     

       
157

       
+

       
    }


     

       
158

       
+

       
    // No notifyListeners - this is passive state save


     

       
159

       
+

       
  }


     

       
160

       
+

       



     

       
161

       
+

       
  /// Clear draft text for a specific parent (call after successful submission)


     

       
162

       
+

       
  ///


     

       
163

       
+

       
  /// [parentUri] - URI of parent comment (null for top-level post reply)


     

       
164

       
+

       
  void clearDraft({String? parentUri}) {


     

       
165

       
+

       
    _drafts.remove(parentUri);


     

       
166

       
+

       
  }


     

       
167

       
 

       



     

       
168

       
 

       
  /// Toggle collapsed state for a comment thread


     

       
169

       
 

       
  ///


     
···

       
175

       
 

       
    } else {


     

       
176

       
 

       
      _collapsedComments.add(uri);


     

       
177

       
 

       
    }


     

       
178

       
+

       
    _safeNotifyListeners();


     

       
179

       
 

       
  }


     

       
180

       
 

       



     

       
181

       
 

       
  /// Check if a specific comment is collapsed


     
···

       
216

       
 

       
    }


     

       
217

       
 

       
  }


     

       
218

       
 

       



     

       
219

       
+

       
  /// Load comments for this provider's post


     

       
220

       
 

       
  ///


     

       
221

       
 

       
  /// Parameters:


     

       
222

       
+

       
  /// - [refresh]: Whether to refresh from the beginning (true) or paginate (false)


     

       
223

       
+

       
  Future<void> loadComments({bool refresh = false}) async {


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
224

       
 

       
    // If already loading, schedule a refresh to happen after current load


     

       
225

       
 

       
    if (_isLoading || _isLoadingMore) {


     

       
226

       
 

       
      if (refresh) {


     
···

       
242

       
 

       
      } else {


     

       
243

       
 

       
        _isLoadingMore = true;


     

       
244

       
 

       
      }


     

       
245

       
+

       
      _safeNotifyListeners();


     

       
246

       
 

       



     

       
247

       
 

       
      if (kDebugMode) {


     

       
248

       
+

       
        debugPrint('📡 Fetching comments: sort=$_sort, postUri=$_postUri');


     

       
249

       
 

       
      }


     

       
250

       
 

       



     

       
251

       
 

       
      final response = await _apiService.getComments(


     

       
252

       
+

       
        postUri: _postUri,


     

       
253

       
 

       
        sort: _sort,


     

       
254

       
 

       
        timeframe: _timeframe,


     

       
255

       
 

       
        cursor: refresh ? null : _cursor,


     

       
256

       
 

       
      );


     

       
257

       
 

       



     

       
258

       
+

       
      if (_isDisposed) return;


     

       
259

       
+

       



     

       
260

       
 

       
      // Only update state after successful fetch


     

       
261

       
 

       
      if (refresh) {


     

       
262

       
 

       
        _comments = response.comments;


     

       
263

       
+

       
        _lastRefreshTime = DateTime.now();


     

       
264

       
 

       
      } else {


     

       
265

       
 

       
        // Create new list instance to trigger rebuilds


     

       
266

       
 

       
        _comments = [..._comments, ...response.comments];


     
···

       
291

       
 

       
        startTimeUpdates();


     

       
292

       
 

       
      }


     

       
293

       
 

       
    } on Exception catch (e) {


     

       
294

       
+

       
      if (_isDisposed) return;


     

       
295

       
 

       
      _error = e.toString();


     

       
296

       
 

       
      if (kDebugMode) {


     

       
297

       
 

       
        debugPrint('❌ Failed to fetch comments: $e');


     

       
298

       
 

       
      }


     

       
299

       
 

       
    } finally {


     

       
300

       
+

       
      if (_isDisposed) return;


     

       
301

       
 

       
      _isLoading = false;


     

       
302

       
 

       
      _isLoadingMore = false;


     

       
303

       
+

       
      _safeNotifyListeners();


     

       
304

       
 

       



     

       
305

       
 

       
      // If a refresh was scheduled during this load, execute it now


     

       
306

       
+

       
      if (_pendingRefresh) {


     

       
307

       
 

       
        if (kDebugMode) {


     

       
308

       
 

       
          debugPrint('🔄 Executing pending refresh');


     

       
309

       
 

       
        }


     

       
310

       
 

       
        _pendingRefresh = false;


     

       
311

       
 

       
        // Schedule refresh without awaiting to avoid blocking


     

       
312

       
 

       
        // This is intentional - we want the refresh to happen asynchronously


     

       
313

       
+

       
        unawaited(loadComments(refresh: true));


     

       

       

       
     

       

       

       
     

       
314

       
 

       
      }


     

       
315

       
 

       
    }


     

       
316

       
 

       
  }


     
···

       
319

       
 

       
  ///


     

       
320

       
 

       
  /// Reloads comments from the beginning for the current post.


     

       
321

       
 

       
  Future<void> refreshComments() async {


     

       
322

       
+

       
    await loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
323

       
 

       
  }


     

       
324

       
 

       



     

       
325

       
 

       
  /// Load more comments (pagination)


     

       
326

       
 

       
  Future<void> loadMoreComments() async {


     

       
327

       
+

       
    if (!_hasMore || _isLoadingMore) {


     

       
328

       
 

       
      return;


     

       
329

       
 

       
    }


     

       
330

       
+

       
    await loadComments();


     

       
331

       
 

       
  }


     

       
332

       
 

       



     

       
333

       
 

       
  /// Change sort order


     
···

       
344

       
 

       



     

       
345

       
 

       
    final previousSort = _sort;


     

       
346

       
 

       
    _sort = newSort;


     

       
347

       
+

       
    _safeNotifyListeners();


     

       
348

       
 

       



     

       
349

       
 

       
    // Reload comments with new sort


     

       
350

       
+

       
    try {


     

       
351

       
+

       
      await loadComments(refresh: true);


     

       
352

       
+

       
      return true;


     

       
353

       
+

       
    } on Exception catch (e) {


     

       
354

       
+

       
      if (_isDisposed) return false;


     

       
355

       
+

       
      // Revert to previous sort option on failure


     

       
356

       
+

       
      _sort = previousSort;


     

       
357

       
+

       
      _safeNotifyListeners();


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
358

       
 

       



     

       
359

       
+

       
      if (kDebugMode) {


     

       
360

       
+

       
        debugPrint('Failed to apply sort option: $e');


     

       

       

       
     

       

       

       
     

       

       

       
     

       
361

       
 

       
      }


     

       

       

       
     

       
362

       
 

       



     

       
363

       
+

       
      return false;


     

       
364

       
+

       
    }


     

       
365

       
 

       
  }


     

       
366

       
 

       



     

       
367

       
 

       
  /// Vote on a comment


     
···

       
447

       
 

       



     

       
448

       
 

       
    if (_commentService == null) {


     

       
449

       
 

       
      throw ApiException('CommentService not available');


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
450

       
 

       
    }


     

       
451

       
 

       



     

       
452

       
 

       
    // Root is always the original post


     

       
453

       
+

       
    final rootUri = _postUri;


     

       
454

       
+

       
    final rootCid = _postCid;


     

       
455

       
 

       



     

       
456

       
 

       
    // Parent depends on whether this is a top-level or nested reply


     

       
457

       
 

       
    final String parentUri;


     
···

       
520

       
 

       
  /// Retry loading after error


     

       
521

       
 

       
  Future<void> retry() async {


     

       
522

       
 

       
    _error = null;


     

       
523

       
+

       
    await loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       
524

       
 

       
  }


     

       
525

       
 

       



     

       
526

       
 

       
  /// Clear error


     

       
527

       
 

       
  void clearError() {


     

       
528

       
 

       
    _error = null;


     

       
529

       
+

       
    _safeNotifyListeners();


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
530

       
 

       
  }


     

       
531

       
 

       



     

       
532

       
 

       
  @override


     

       
533

       
 

       
  void dispose() {


     

       
534

       
+

       
    _isDisposed = true;


     

       
535

       
 

       
    // Stop time updates and cancel timer (also sets value to null)


     

       
536

       
 

       
    stopTimeUpdates();


     

       
537

       
+

       
    // Dispose API service


     

       

       

       
     

       
538

       
 

       
    _apiService.dispose();


     

       
539

       
 

       
    // Dispose the ValueNotifier last


     

       
540

       
 

       
    _currentTimeNotifier.dispose();
+119 -10
lib/screens/compose/reply_screen.dart 
···

       
1

       
 

       
import 'dart:async';


     

       
2

       
 

       
import 'dart:math' as math;


     

       
3

       
 

       



     

       

       

       
     

       
4

       
 

       
import 'package:flutter/material.dart';


     

       
5

       
 

       
import 'package:flutter/services.dart';


     

       
6

       
 

       
import 'package:provider/provider.dart';


     
···

       
8

       
 

       
import '../../constants/app_colors.dart';


     

       
9

       
 

       
import '../../models/comment.dart';


     

       
10

       
 

       
import '../../models/post.dart';


     

       

       

       
     

       
11

       
 

       
import '../../providers/comments_provider.dart';


     

       
12

       
 

       
import '../../widgets/comment_thread.dart';


     

       
13

       
 

       
import '../../widgets/post_card.dart';


     
···

       
32

       
 

       
    this.post,


     

       
33

       
 

       
    this.comment,


     

       
34

       
 

       
    required this.onSubmit,


     

       

       

       
     

       
35

       
 

       
    super.key,


     

       
36

       
 

       
  }) : assert(


     

       
37

       
 

       
         (post != null) != (comment != null),


     
···

       
47

       
 

       
  /// Callback when user submits reply


     

       
48

       
 

       
  final Future<void> Function(String content) onSubmit;


     

       
49

       
 

       



     

       

       

       
     

       

       

       
     

       

       

       
     

       
50

       
 

       
  @override


     

       
51

       
 

       
  State<ReplyScreen> createState() => _ReplyScreenState();


     

       
52

       
 

       
}


     
···

       
58

       
 

       
  bool _hasText = false;


     

       
59

       
 

       
  bool _isKeyboardOpening = false;


     

       
60

       
 

       
  bool _isSubmitting = false;


     

       

       

       
     

       
61

       
 

       
  double _lastKeyboardHeight = 0;


     

       
62

       
 

       
  Timer? _bannerDismissTimer;


     

       
63

       
 

       



     
···

       
68

       
 

       
    _textController.addListener(_onTextChanged);


     

       
69

       
 

       
    _focusNode.addListener(_onFocusChanged);


     

       
70

       
 

       



     

       
71

       
-

       
    // Autofocus with delay (Thunder approach - let screen render first)


     

       
72

       
-

       
    Future.delayed(const Duration(milliseconds: 300), () {


     

       
73

       
 

       
      if (mounted) {


     

       
74

       
-

       
        _isKeyboardOpening = true;


     

       
75

       
-

       
        _focusNode.requestFocus();


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
76

       
 

       
      }


     

       
77

       
 

       
    });


     

       
78

       
 

       
  }


     

       
79

       
 

       



     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
80

       
 

       
  void _onFocusChanged() {


     

       
81

       
 

       
    // When text field gains focus, scroll to bottom as keyboard opens


     

       
82

       
 

       
    if (_focusNode.hasFocus) {


     
···

       
87

       
 

       
  @override


     

       
88

       
 

       
  void didChangeMetrics() {


     

       
89

       
 

       
    super.didChangeMetrics();


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
90

       
 

       
    final keyboardHeight = View.of(context).viewInsets.bottom;


     

       
91

       
 

       



     

       
92

       
 

       
    // Detect keyboard closing and unfocus text field


     
···

       
120

       
 

       
  @override


     

       
121

       
 

       
  void dispose() {


     

       
122

       
 

       
    _bannerDismissTimer?.cancel();


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
123

       
 

       
    WidgetsBinding.instance.removeObserver(this);


     

       
124

       
 

       
    _textController.dispose();


     

       
125

       
 

       
    _focusNode.dispose();


     
···

       
137

       
 

       
  }


     

       
138

       
 

       



     

       
139

       
 

       
  Future<void> _handleSubmit() async {


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
140

       
 

       
    final content = _textController.text.trim();


     

       
141

       
 

       
    if (content.isEmpty) {


     

       
142

       
 

       
      return;


     
···

       
152

       
 

       



     

       
153

       
 

       
    try {


     

       
154

       
 

       
      await widget.onSubmit(content);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
155

       
 

       
      // Pop screen after successful submission


     

       
156

       
 

       
      if (mounted) {


     

       
157

       
 

       
        Navigator.of(context).pop();


     
···

       
213

       
 

       
  }


     

       
214

       
 

       



     

       
215

       
 

       
  void _handleCancel() {


     

       

       

       
     

       

       

       
     

       
216

       
 

       
    Navigator.of(context).pop();


     

       
217

       
 

       
  }


     

       
218

       
 

       



     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
219

       
 

       
  @override


     

       
220

       
 

       
  Widget build(BuildContext context) {


     

       
221

       
-

       
    return GestureDetector(


     

       
222

       
-

       
      onTap: () {


     

       
223

       
-

       
        // Dismiss keyboard when tapping outside


     

       
224

       
-

       
        FocusManager.instance.primaryFocus?.unfocus();


     

       
225

       
-

       
      },


     

       
226

       
-

       
      child: Scaffold(


     

       

       

       
     

       

       

       
     

       

       

       
     

       
227

       
 

       
        backgroundColor: AppColors.background,


     

       
228

       
 

       
        resizeToAvoidBottomInset: false, // Thunder approach


     

       
229

       
 

       
        appBar: AppBar(


     
···

       
303

       
 

       
            ),


     

       
304

       
 

       
          ],


     

       
305

       
 

       
        ),


     

       

       

       
     

       
306

       
 

       
      ),


     

       
307

       
 

       
    );


     

       
308

       
 

       
  }


     
···

       
1

       
 

       
import 'dart:async';


     

       
2

       
 

       
import 'dart:math' as math;


     

       
3

       
 

       



     

       
4

       
+

       
import 'package:flutter/foundation.dart';


     

       
5

       
 

       
import 'package:flutter/material.dart';


     

       
6

       
 

       
import 'package:flutter/services.dart';


     

       
7

       
 

       
import 'package:provider/provider.dart';


     
···

       
9

       
 

       
import '../../constants/app_colors.dart';


     

       
10

       
 

       
import '../../models/comment.dart';


     

       
11

       
 

       
import '../../models/post.dart';


     

       
12

       
+

       
import '../../providers/auth_provider.dart';


     

       
13

       
 

       
import '../../providers/comments_provider.dart';


     

       
14

       
 

       
import '../../widgets/comment_thread.dart';


     

       
15

       
 

       
import '../../widgets/post_card.dart';


     
···

       
34

       
 

       
    this.post,


     

       
35

       
 

       
    this.comment,


     

       
36

       
 

       
    required this.onSubmit,


     

       
37

       
+

       
    required this.commentsProvider,


     

       
38

       
 

       
    super.key,


     

       
39

       
 

       
  }) : assert(


     

       
40

       
 

       
         (post != null) != (comment != null),


     
···

       
50

       
 

       
  /// Callback when user submits reply


     

       
51

       
 

       
  final Future<void> Function(String content) onSubmit;


     

       
52

       
 

       



     

       
53

       
+

       
  /// CommentsProvider for draft save/restore and time updates


     

       
54

       
+

       
  final CommentsProvider commentsProvider;


     

       
55

       
+

       



     

       
56

       
 

       
  @override


     

       
57

       
 

       
  State<ReplyScreen> createState() => _ReplyScreenState();


     

       
58

       
 

       
}


     
···

       
64

       
 

       
  bool _hasText = false;


     

       
65

       
 

       
  bool _isKeyboardOpening = false;


     

       
66

       
 

       
  bool _isSubmitting = false;


     

       
67

       
+

       
  bool _authInvalidated = false;


     

       
68

       
 

       
  double _lastKeyboardHeight = 0;


     

       
69

       
 

       
  Timer? _bannerDismissTimer;


     

       
70

       
 

       



     
···

       
75

       
 

       
    _textController.addListener(_onTextChanged);


     

       
76

       
 

       
    _focusNode.addListener(_onFocusChanged);


     

       
77

       
 

       



     

       
78

       
+

       
    // Restore draft and autofocus after frame is built


     

       
79

       
+

       
    WidgetsBinding.instance.addPostFrameCallback((_) {


     

       
80

       
 

       
      if (mounted) {


     

       
81

       
+

       
        _setupAuthListener();


     

       
82

       
+

       
        _restoreDraft();


     

       
83

       
+

       



     

       
84

       
+

       
        // Autofocus with delay (Thunder approach - let screen render first)


     

       
85

       
+

       
        Future.delayed(const Duration(milliseconds: 300), () {


     

       
86

       
+

       
          if (mounted) {


     

       
87

       
+

       
            _isKeyboardOpening = true;


     

       
88

       
+

       
            _focusNode.requestFocus();


     

       
89

       
+

       
          }


     

       
90

       
+

       
        });


     

       
91

       
 

       
      }


     

       
92

       
 

       
    });


     

       
93

       
 

       
  }


     

       
94

       
 

       



     

       
95

       
+

       
  void _setupAuthListener() {


     

       
96

       
+

       
    try {


     

       
97

       
+

       
      context.read<AuthProvider>().addListener(_onAuthChanged);


     

       
98

       
+

       
    } on Exception {


     

       
99

       
+

       
      // AuthProvider may not be available (e.g., tests)


     

       
100

       
+

       
    }


     

       
101

       
+

       
  }


     

       
102

       
+

       



     

       
103

       
+

       
  void _onAuthChanged() {


     

       
104

       
+

       
    if (!mounted || _authInvalidated) return;


     

       
105

       
+

       



     

       
106

       
+

       
    try {


     

       
107

       
+

       
      final authProvider = context.read<AuthProvider>();


     

       
108

       
+

       
      if (!authProvider.isAuthenticated) {


     

       
109

       
+

       
        _authInvalidated = true;


     

       
110

       
+

       
        if (mounted) {


     

       
111

       
+

       
          Navigator.of(context).pop();


     

       
112

       
+

       
        }


     

       
113

       
+

       
      }


     

       
114

       
+

       
    } on Exception {


     

       
115

       
+

       
      // AuthProvider may not be available


     

       
116

       
+

       
    }


     

       
117

       
+

       
  }


     

       
118

       
+

       



     

       
119

       
+

       
  /// Restore draft text if available for this reply context


     

       
120

       
+

       
  void _restoreDraft() {


     

       
121

       
+

       
    try {


     

       
122

       
+

       
      final commentsProvider = context.read<CommentsProvider>();


     

       
123

       
+

       
      final ourParentUri = widget.comment?.comment.uri;


     

       
124

       
+

       



     

       
125

       
+

       
      // Get draft for this specific parent URI


     

       
126

       
+

       
      final draft = commentsProvider.getDraft(parentUri: ourParentUri);


     

       
127

       
+

       



     

       
128

       
+

       
      if (draft.isNotEmpty) {


     

       
129

       
+

       
        _textController.text = draft;


     

       
130

       
+

       
        setState(() {


     

       
131

       
+

       
          _hasText = true;


     

       
132

       
+

       
        });


     

       
133

       
+

       
      }


     

       
134

       
+

       
    } on Exception catch (e) {


     

       
135

       
+

       
      // CommentsProvider might not be available (e.g., during testing)


     

       
136

       
+

       
      if (kDebugMode) {


     

       
137

       
+

       
        debugPrint('📝 Draft not restored: $e');


     

       
138

       
+

       
      }


     

       
139

       
+

       
    }


     

       
140

       
+

       
  }


     

       
141

       
+

       



     

       
142

       
 

       
  void _onFocusChanged() {


     

       
143

       
 

       
    // When text field gains focus, scroll to bottom as keyboard opens


     

       
144

       
 

       
    if (_focusNode.hasFocus) {


     
···

       
149

       
 

       
  @override


     

       
150

       
 

       
  void didChangeMetrics() {


     

       
151

       
 

       
    super.didChangeMetrics();


     

       
152

       
+

       
    // Guard against being called after widget is deactivated


     

       
153

       
+

       
    // (can happen during keyboard animation while navigating away)


     

       
154

       
+

       
    if (!mounted) return;


     

       
155

       
+

       



     

       
156

       
 

       
    final keyboardHeight = View.of(context).viewInsets.bottom;


     

       
157

       
 

       



     

       
158

       
 

       
    // Detect keyboard closing and unfocus text field


     
···

       
186

       
 

       
  @override


     

       
187

       
 

       
  void dispose() {


     

       
188

       
 

       
    _bannerDismissTimer?.cancel();


     

       
189

       
+

       
    try {


     

       
190

       
+

       
      context.read<AuthProvider>().removeListener(_onAuthChanged);


     

       
191

       
+

       
    } on Exception {


     

       
192

       
+

       
      // AuthProvider may not be available


     

       
193

       
+

       
    }


     

       
194

       
 

       
    WidgetsBinding.instance.removeObserver(this);


     

       
195

       
 

       
    _textController.dispose();


     

       
196

       
 

       
    _focusNode.dispose();


     
···

       
208

       
 

       
  }


     

       
209

       
 

       



     

       
210

       
 

       
  Future<void> _handleSubmit() async {


     

       
211

       
+

       
    if (_authInvalidated) {


     

       
212

       
+

       
      return;


     

       
213

       
+

       
    }


     

       
214

       
+

       



     

       
215

       
 

       
    final content = _textController.text.trim();


     

       
216

       
 

       
    if (content.isEmpty) {


     

       
217

       
 

       
      return;


     
···

       
227

       
 

       



     

       
228

       
 

       
    try {


     

       
229

       
 

       
      await widget.onSubmit(content);


     

       
230

       
+

       
      // Clear draft on success


     

       
231

       
+

       
      try {


     

       
232

       
+

       
        if (mounted) {


     

       
233

       
+

       
          final parentUri = widget.comment?.comment.uri;


     

       
234

       
+

       
          context.read<CommentsProvider>().clearDraft(parentUri: parentUri);


     

       
235

       
+

       
        }


     

       
236

       
+

       
      } on Exception catch (e) {


     

       
237

       
+

       
        // CommentsProvider might not be available


     

       
238

       
+

       
        if (kDebugMode) {


     

       
239

       
+

       
          debugPrint('📝 Draft not cleared: $e');


     

       
240

       
+

       
        }


     

       
241

       
+

       
      }


     

       
242

       
 

       
      // Pop screen after successful submission


     

       
243

       
 

       
      if (mounted) {


     

       
244

       
 

       
        Navigator.of(context).pop();


     
···

       
300

       
 

       
  }


     

       
301

       
 

       



     

       
302

       
 

       
  void _handleCancel() {


     

       
303

       
+

       
    // Save draft before closing (if text is not empty)


     

       
304

       
+

       
    _saveDraft();


     

       
305

       
 

       
    Navigator.of(context).pop();


     

       
306

       
 

       
  }


     

       
307

       
 

       



     

       
308

       
+

       
  /// Save current text as draft


     

       
309

       
+

       
  void _saveDraft() {


     

       
310

       
+

       
    try {


     

       
311

       
+

       
      final commentsProvider = context.read<CommentsProvider>();


     

       
312

       
+

       
      commentsProvider.saveDraft(


     

       
313

       
+

       
        _textController.text,


     

       
314

       
+

       
        parentUri: widget.comment?.comment.uri,


     

       
315

       
+

       
      );


     

       
316

       
+

       
    } on Exception catch (e) {


     

       
317

       
+

       
      // CommentsProvider might not be available


     

       
318

       
+

       
      if (kDebugMode) {


     

       
319

       
+

       
        debugPrint('📝 Draft not saved: $e');


     

       
320

       
+

       
      }


     

       
321

       
+

       
    }


     

       
322

       
+

       
  }


     

       
323

       
+

       



     

       
324

       
 

       
  @override


     

       
325

       
 

       
  Widget build(BuildContext context) {


     

       
326

       
+

       
    // Provide CommentsProvider to descendant widgets (Consumer in _ContextPreview)


     

       
327

       
+

       
    return ChangeNotifierProvider.value(


     

       
328

       
+

       
      value: widget.commentsProvider,


     

       
329

       
+

       
      child: GestureDetector(


     

       
330

       
+

       
        onTap: () {


     

       
331

       
+

       
          // Dismiss keyboard when tapping outside


     

       
332

       
+

       
          FocusManager.instance.primaryFocus?.unfocus();


     

       
333

       
+

       
        },


     

       
334

       
+

       
        child: Scaffold(


     

       
335

       
 

       
        backgroundColor: AppColors.background,


     

       
336

       
 

       
        resizeToAvoidBottomInset: false, // Thunder approach


     

       
337

       
 

       
        appBar: AppBar(


     
···

       
411

       
 

       
            ),


     

       
412

       
 

       
          ],


     

       
413

       
 

       
        ),


     

       
414

       
+

       
      ),


     

       
415

       
 

       
      ),


     

       
416

       
 

       
    );


     

       
417

       
 

       
  }
+23 -8
lib/screens/home/focused_thread_screen.dart 
···

       
4

       
 

       
import '../../constants/app_colors.dart';


     

       
5

       
 

       
import '../../models/comment.dart';


     

       
6

       
 

       
import '../../providers/auth_provider.dart';


     

       

       

       
     

       
7

       
 

       
import '../../widgets/comment_card.dart';


     

       
8

       
 

       
import '../../widgets/comment_thread.dart';


     

       
9

       
 

       
import '../../widgets/status_bar_overlay.dart';


     
···

       
25

       
 

       
/// any collapsed state is reset. This is by design - it allows users to


     

       
26

       
 

       
/// explore deep threads without their collapse choices persisting across


     

       
27

       
 

       
/// navigation, keeping the focused view clean and predictable.


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
28

       
 

       
class FocusedThreadScreen extends StatelessWidget {


     

       
29

       
 

       
  const FocusedThreadScreen({


     

       
30

       
 

       
    required this.thread,


     

       
31

       
 

       
    required this.ancestors,


     

       
32

       
 

       
    required this.onReply,


     

       

       

       
     

       
33

       
 

       
    super.key,


     

       
34

       
 

       
  });


     

       
35

       
 

       



     
···

       
42

       
 

       
  /// Callback when user replies to a comment


     

       
43

       
 

       
  final Future<void> Function(String content, ThreadViewComment parent) onReply;


     

       
44

       
 

       



     

       

       

       
     

       

       

       
     

       

       

       
     

       
45

       
 

       
  @override


     

       
46

       
 

       
  Widget build(BuildContext context) {


     

       
47

       
-

       
    return Scaffold(


     

       
48

       
-

       
      backgroundColor: AppColors.background,


     

       
49

       
-

       
      body: _FocusedThreadBody(


     

       
50

       
-

       
        thread: thread,


     

       
51

       
-

       
        ancestors: ancestors,


     

       
52

       
-

       
        onReply: onReply,


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
53

       
 

       
      ),


     

       
54

       
 

       
    );


     

       
55

       
 

       
  }


     
···

       
126

       
 

       



     

       
127

       
 

       
    Navigator.of(context).push(


     

       
128

       
 

       
      MaterialPageRoute<void>(


     

       
129

       
-

       
        builder: (context) => ReplyScreen(


     

       
130

       
 

       
          comment: comment,


     

       
131

       
 

       
          onSubmit: (content) => widget.onReply(content, comment),


     

       

       

       
     

       
132

       
 

       
        ),


     

       
133

       
 

       
      ),


     

       
134

       
 

       
    );


     
···

       
141

       
 

       
  ) {


     

       
142

       
 

       
    Navigator.of(context).push(


     

       
143

       
 

       
      MaterialPageRoute<void>(


     

       
144

       
-

       
        builder: (context) => FocusedThreadScreen(


     

       
145

       
 

       
          thread: thread,


     

       
146

       
 

       
          ancestors: ancestors,


     

       
147

       
 

       
          onReply: widget.onReply,


     

       

       

       
     

       
148

       
 

       
        ),


     

       
149

       
 

       
      ),


     

       
150

       
 

       
    );


     
···

       
4

       
 

       
import '../../constants/app_colors.dart';


     

       
5

       
 

       
import '../../models/comment.dart';


     

       
6

       
 

       
import '../../providers/auth_provider.dart';


     

       
7

       
+

       
import '../../providers/comments_provider.dart';


     

       
8

       
 

       
import '../../widgets/comment_card.dart';


     

       
9

       
 

       
import '../../widgets/comment_thread.dart';


     

       
10

       
 

       
import '../../widgets/status_bar_overlay.dart';


     
···

       
26

       
 

       
/// any collapsed state is reset. This is by design - it allows users to


     

       
27

       
 

       
/// explore deep threads without their collapse choices persisting across


     

       
28

       
 

       
/// navigation, keeping the focused view clean and predictable.


     

       
29

       
+

       
///


     

       
30

       
+

       
/// ## Provider Sharing


     

       
31

       
+

       
/// Receives the parent's CommentsProvider for draft text preservation and


     

       
32

       
+

       
/// consistent vote state display.


     

       
33

       
 

       
class FocusedThreadScreen extends StatelessWidget {


     

       
34

       
 

       
  const FocusedThreadScreen({


     

       
35

       
 

       
    required this.thread,


     

       
36

       
 

       
    required this.ancestors,


     

       
37

       
 

       
    required this.onReply,


     

       
38

       
+

       
    required this.commentsProvider,


     

       
39

       
 

       
    super.key,


     

       
40

       
 

       
  });


     

       
41

       
 

       



     
···

       
48

       
 

       
  /// Callback when user replies to a comment


     

       
49

       
 

       
  final Future<void> Function(String content, ThreadViewComment parent) onReply;


     

       
50

       
 

       



     

       
51

       
+

       
  /// Parent's CommentsProvider for draft preservation and vote state


     

       
52

       
+

       
  final CommentsProvider commentsProvider;


     

       
53

       
+

       



     

       
54

       
 

       
  @override


     

       
55

       
 

       
  Widget build(BuildContext context) {


     

       
56

       
+

       
    // Expose parent's CommentsProvider for ReplyScreen draft access


     

       
57

       
+

       
    return ChangeNotifierProvider.value(


     

       
58

       
+

       
      value: commentsProvider,


     

       
59

       
+

       
      child: Scaffold(


     

       
60

       
+

       
        backgroundColor: AppColors.background,


     

       
61

       
+

       
        body: _FocusedThreadBody(


     

       
62

       
+

       
          thread: thread,


     

       
63

       
+

       
          ancestors: ancestors,


     

       
64

       
+

       
          onReply: onReply,


     

       
65

       
+

       
        ),


     

       
66

       
 

       
      ),


     

       
67

       
 

       
    );


     

       
68

       
 

       
  }


     
···

       
139

       
 

       



     

       
140

       
 

       
    Navigator.of(context).push(


     

       
141

       
 

       
      MaterialPageRoute<void>(


     

       
142

       
+

       
        builder: (navigatorContext) => ReplyScreen(


     

       
143

       
 

       
          comment: comment,


     

       
144

       
 

       
          onSubmit: (content) => widget.onReply(content, comment),


     

       
145

       
+

       
          commentsProvider: context.read<CommentsProvider>(),


     

       
146

       
 

       
        ),


     

       
147

       
 

       
      ),


     

       
148

       
 

       
    );


     
···

       
155

       
 

       
  ) {


     

       
156

       
 

       
    Navigator.of(context).push(


     

       
157

       
 

       
      MaterialPageRoute<void>(


     

       
158

       
+

       
        builder: (navigatorContext) => FocusedThreadScreen(


     

       
159

       
 

       
          thread: thread,


     

       
160

       
 

       
          ancestors: ancestors,


     

       
161

       
 

       
          onReply: widget.onReply,


     

       
162

       
+

       
          commentsProvider: context.read<CommentsProvider>(),


     

       
163

       
 

       
        ),


     

       
164

       
 

       
      ),


     

       
165

       
 

       
    );
+268 -111
lib/screens/home/post_detail_screen.dart 
···

       
1

       
 

       
import 'package:cached_network_image/cached_network_image.dart';


     

       

       

       
     

       
2

       
 

       
import 'package:flutter/material.dart';


     

       
3

       
 

       
import 'package:flutter/services.dart';


     

       
4

       
 

       
import 'package:provider/provider.dart';


     
···

       
10

       
 

       
import '../../providers/auth_provider.dart';


     

       
11

       
 

       
import '../../providers/comments_provider.dart';


     

       
12

       
 

       
import '../../providers/vote_provider.dart';


     

       

       

       
     

       
13

       
 

       
import '../../utils/community_handle_utils.dart';


     

       
14

       
 

       
import '../../utils/error_messages.dart';


     

       
15

       
 

       
import '../../widgets/comment_thread.dart';


     
···

       
48

       
 

       
  final ScrollController _scrollController = ScrollController();


     

       
49

       
 

       
  final GlobalKey _commentsHeaderKey = GlobalKey();


     

       
50

       
 

       



     

       
51

       
-

       
  // Current sort option


     

       
52

       
-

       
  String _currentSort = 'hot';


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
53

       
 

       



     

       
54

       
 

       
  @override


     

       
55

       
 

       
  void initState() {


     

       
56

       
 

       
    super.initState();


     

       
57

       
-

       



     

       
58

       
-

       
    // Initialize scroll controller for pagination


     

       
59

       
 

       
    _scrollController.addListener(_onScroll);


     

       
60

       
 

       



     

       
61

       
-

       
    // Load comments after frame is built using provider from tree


     

       
62

       
 

       
    WidgetsBinding.instance.addPostFrameCallback((_) {


     

       
63

       
 

       
      if (mounted) {


     

       
64

       
-

       
        _loadComments();


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
65

       
 

       
      }


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
66

       
 

       
    });


     

       
67

       
 

       
  }


     

       
68

       
 

       



     

       
69

       
 

       
  @override


     

       
70

       
 

       
  void dispose() {


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
71

       
 

       
    _scrollController.dispose();


     

       
72

       
 

       
    super.dispose();


     

       
73

       
 

       
  }


     

       
74

       
 

       



     

       
75

       
-

       
  /// Load comments for the current post


     

       
76

       
-

       
  void _loadComments() {


     

       
77

       
-

       
    context.read<CommentsProvider>().loadComments(


     

       
78

       
-

       
      postUri: widget.post.post.uri,


     

       
79

       
-

       
      postCid: widget.post.post.cid,


     

       
80

       
-

       
      refresh: true,


     

       
81

       
-

       
    );


     

       
82

       
 

       
  }


     

       
83

       
 

       



     

       
84

       
-

       
  /// Handle sort changes from dropdown


     

       
85

       
-

       
  Future<void> _onSortChanged(String newSort) async {


     

       
86

       
-

       
    final previousSort = _currentSort;


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
87

       
 

       



     

       
88

       
-

       
    setState(() {


     

       
89

       
-

       
      _currentSort = newSort;


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
90

       
 

       
    });


     

       

       

       
     

       
91

       
 

       



     

       
92

       
-

       
    final commentsProvider = context.read<CommentsProvider>();


     

       
93

       
-

       
    final success = await commentsProvider.setSortOption(newSort);


     

       

       

       
     

       
94

       
 

       



     

       
95

       
-

       
    // Show error snackbar and revert UI if sort change failed


     

       
96

       
 

       
    if (!success && mounted) {


     

       
97

       
-

       
      setState(() {


     

       
98

       
-

       
        _currentSort = previousSort;


     

       
99

       
-

       
      });


     

       
100

       
-

       



     

       
101

       
 

       
      ScaffoldMessenger.of(context).showSnackBar(


     

       
102

       
 

       
        SnackBar(


     

       
103

       
 

       
          content: const Text('Failed to change sort order. Please try again.'),


     
···

       
118

       
 

       



     

       
119

       
 

       
  /// Handle scroll for pagination


     

       
120

       
 

       
  void _onScroll() {


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
121

       
 

       
    if (_scrollController.position.pixels >=


     

       
122

       
 

       
        _scrollController.position.maxScrollExtent - 200) {


     

       
123

       
-

       
      context.read<CommentsProvider>().loadMoreComments();


     

       
124

       
 

       
    }


     

       
125

       
 

       
  }


     

       
126

       
 

       



     

       
127

       
 

       
  /// Handle pull-to-refresh


     

       
128

       
 

       
  Future<void> _onRefresh() async {


     

       
129

       
-

       
    final commentsProvider = context.read<CommentsProvider>();


     

       
130

       
-

       
    await commentsProvider.refreshComments();


     

       

       

       
     

       

       

       
     

       
131

       
 

       
  }


     

       
132

       
 

       



     

       
133

       
 

       
  @override


     

       
134

       
 

       
  Widget build(BuildContext context) {


     

       
135

       
-

       
    return Scaffold(


     

       
136

       
-

       
      backgroundColor: AppColors.background,


     

       
137

       
-

       
      body: _buildContent(),


     

       
138

       
-

       
      bottomNavigationBar: _buildActionBar(),


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
139

       
 

       
    );


     

       
140

       
 

       
  }


     

       
141

       
 

       



     
···

       
365

       
 

       
    Navigator.of(context).push(


     

       
366

       
 

       
      MaterialPageRoute<void>(


     

       
367

       
 

       
        builder:


     

       
368

       
-

       
            (context) =>


     

       
369

       
-

       
                ReplyScreen(post: widget.post, onSubmit: _handleCommentSubmit),


     

       

       

       
     

       

       

       
     

       

       

       
     

       
370

       
 

       
      ),


     

       
371

       
 

       
    );


     

       
372

       
 

       
  }


     

       
373

       
 

       



     

       
374

       
 

       
  /// Handle comment submission (reply to post)


     

       
375

       
 

       
  Future<void> _handleCommentSubmit(String content) async {


     

       
376

       
-

       
    final commentsProvider = context.read<CommentsProvider>();


     

       
377

       
 

       
    final messenger = ScaffoldMessenger.of(context);


     

       
378

       
 

       



     

       
379

       
 

       
    try {


     

       
380

       
-

       
      await commentsProvider.createComment(content: content);


     

       
381

       
 

       



     

       
382

       
 

       
      if (mounted) {


     

       
383

       
 

       
        messenger.showSnackBar(


     
···

       
407

       
 

       
    String content,


     

       
408

       
 

       
    ThreadViewComment parentComment,


     

       
409

       
 

       
  ) async {


     

       
410

       
-

       
    final commentsProvider = context.read<CommentsProvider>();


     

       
411

       
 

       
    final messenger = ScaffoldMessenger.of(context);


     

       
412

       
 

       



     

       
413

       
 

       
    try {


     

       
414

       
-

       
      await commentsProvider.createComment(


     

       
415

       
 

       
        content: content,


     

       
416

       
 

       
        parentComment: parentComment,


     

       
417

       
 

       
      );


     
···

       
460

       
 

       
            (context) => ReplyScreen(


     

       
461

       
 

       
              comment: comment,


     

       
462

       
 

       
              onSubmit: (content) => _handleCommentReply(content, comment),


     

       

       

       
     

       
463

       
 

       
            ),


     

       
464

       
 

       
      ),


     

       
465

       
 

       
    );


     
···

       
472

       
 

       
  ) {


     

       
473

       
 

       
    Navigator.of(context).push(


     

       
474

       
 

       
      MaterialPageRoute<void>(


     

       
475

       
-

       
        builder: (context) => FocusedThreadScreen(


     

       
476

       
-

       
          thread: thread,


     

       
477

       
-

       
          ancestors: ancestors,


     

       
478

       
-

       
          onReply: _handleCommentReply,


     

       
479

       
-

       
        ),


     

       

       

       
     

       

       

       
     

       
480

       
 

       
      ),


     

       
481

       
 

       
    );


     

       
482

       
 

       
  }


     
···

       
539

       
 

       
                  SliverSafeArea(


     

       
540

       
 

       
                    top: false,


     

       
541

       
 

       
                    sliver: SliverList(


     

       
542

       
-

       
                  delegate: SliverChildBuilderDelegate(


     

       
543

       
-

       
                    (context, index) {


     

       
544

       
-

       
                      // Post card (index 0)


     

       
545

       
-

       
                      if (index == 0) {


     

       
546

       
-

       
                        return Column(


     

       
547

       
-

       
                          children: [


     

       
548

       
-

       
                            // Reuse PostCard (hide comment button in


     

       
549

       
-

       
                            // detail view)


     

       
550

       
-

       
                            // Use ValueListenableBuilder to only rebuild


     

       
551

       
-

       
                            // when time changes


     

       
552

       
-

       
                            _PostHeader(


     

       
553

       
-

       
                              post: widget.post,


     

       
554

       
-

       
                              currentTimeNotifier:


     

       
555

       
-

       
                                  commentsProvider.currentTimeNotifier,


     

       
556

       
-

       
                            ),


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
557

       
 

       



     

       
558

       
-

       
                            // Visual divider before comments section


     

       
559

       
-

       
                            Container(


     

       
560

       
-

       
                              margin: const EdgeInsets.symmetric(vertical: 16),


     

       
561

       
-

       
                              height: 1,


     

       
562

       
-

       
                              color: AppColors.border,


     

       
563

       
-

       
                            ),


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
564

       
 

       



     

       
565

       
-

       
                            // Comments header with sort dropdown


     

       
566

       
-

       
                            CommentsHeader(


     

       
567

       
-

       
                              key: _commentsHeaderKey,


     

       
568

       
-

       
                              commentCount: comments.length,


     

       
569

       
-

       
                              currentSort: _currentSort,


     

       
570

       
-

       
                              onSortChanged: _onSortChanged,


     

       
571

       
-

       
                            ),


     

       
572

       
-

       
                          ],


     

       
573

       
-

       
                        );


     

       
574

       
-

       
                      }


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
575

       
 

       



     

       
576

       
-

       
                      // Loading indicator or error at the end


     

       
577

       
-

       
                      if (index == comments.length + 1) {


     

       
578

       
-

       
                        if (isLoadingMore) {


     

       
579

       
-

       
                          return const InlineLoading();


     

       
580

       
-

       
                        }


     

       
581

       
-

       
                        if (error != null) {


     

       
582

       
-

       
                          return InlineError(


     

       
583

       
-

       
                            message: ErrorMessages.getUserFriendly(error),


     

       
584

       
-

       
                            onRetry: () {


     

       
585

       
-

       
                              commentsProvider


     

       
586

       
-

       
                                ..clearError()


     

       
587

       
-

       
                                ..loadMoreComments();


     

       
588

       
-

       
                            },


     

       
589

       
 

       
                          );


     

       
590

       
-

       
                        }


     

       
591

       
-

       
                      }


     

       
592

       
-

       



     

       
593

       
-

       
                      // Comment item - use existing CommentThread widget


     

       
594

       
-

       
                      final comment = comments[index - 1];


     

       
595

       
-

       
                      return _CommentItem(


     

       
596

       
-

       
                        comment: comment,


     

       
597

       
-

       
                        currentTimeNotifier:


     

       
598

       
-

       
                            commentsProvider.currentTimeNotifier,


     

       
599

       
-

       
                        onCommentTap: _openReplyToComment,


     

       
600

       
-

       
                        collapsedComments: commentsProvider.collapsedComments,


     

       
601

       
-

       
                        onCollapseToggle: commentsProvider.toggleCollapsed,


     

       
602

       
-

       
                        onContinueThread: _onContinueThread,


     

       
603

       
-

       
                      );


     

       
604

       
-

       
                    },


     

       
605

       
-

       
                    childCount:


     

       
606

       
-

       
                        1 +


     

       
607

       
-

       
                        comments.length +


     

       
608

       
-

       
                        (isLoadingMore || error != null ? 1 : 0),


     

       
609

       
 

       
                  ),


     

       
610

       
-

       
                ),


     

       
611

       
 

       
              ),


     

       
612

       
-

       
            ],


     

       
613

       
-

       
          ),


     

       
614

       
-

       
        ),


     

       
615

       
 

       
            // Prevents content showing through transparent status bar


     

       
616

       
 

       
            const StatusBarOverlay(),


     

       
617

       
 

       
          ],


     
···

       
677

       
 

       
  final Set<String> collapsedComments;


     

       
678

       
 

       
  final void Function(String uri)? onCollapseToggle;


     

       
679

       
 

       
  final void Function(ThreadViewComment, List<ThreadViewComment>)?


     

       
680

       
-

       
      onContinueThread;


     

       
681

       
 

       



     

       
682

       
 

       
  @override


     

       
683

       
 

       
  Widget build(BuildContext context) {


     
···

       
1

       
 

       
import 'package:cached_network_image/cached_network_image.dart';


     

       
2

       
+

       
import 'package:flutter/foundation.dart';


     

       
3

       
 

       
import 'package:flutter/material.dart';


     

       
4

       
 

       
import 'package:flutter/services.dart';


     

       
5

       
 

       
import 'package:provider/provider.dart';


     
···

       
11

       
 

       
import '../../providers/auth_provider.dart';


     

       
12

       
 

       
import '../../providers/comments_provider.dart';


     

       
13

       
 

       
import '../../providers/vote_provider.dart';


     

       
14

       
+

       
import '../../services/comments_provider_cache.dart';


     

       
15

       
 

       
import '../../utils/community_handle_utils.dart';


     

       
16

       
 

       
import '../../utils/error_messages.dart';


     

       
17

       
 

       
import '../../widgets/comment_thread.dart';


     
···

       
50

       
 

       
  final ScrollController _scrollController = ScrollController();


     

       
51

       
 

       
  final GlobalKey _commentsHeaderKey = GlobalKey();


     

       
52

       
 

       



     

       
53

       
+

       
  // Cached provider from CommentsProviderCache


     

       
54

       
+

       
  late CommentsProvider _commentsProvider;


     

       
55

       
+

       
  CommentsProviderCache? _commentsCache;


     

       
56

       
+

       



     

       
57

       
+

       
  // Track initialization state


     

       
58

       
+

       
  bool _isInitialized = false;


     

       
59

       
+

       



     

       
60

       
+

       
  // Track if provider has been invalidated (e.g., by sign-out)


     

       
61

       
+

       
  bool _providerInvalidated = false;


     

       
62

       
 

       



     

       
63

       
 

       
  @override


     

       
64

       
 

       
  void initState() {


     

       
65

       
 

       
    super.initState();


     

       

       

       
     

       

       

       
     

       
66

       
 

       
    _scrollController.addListener(_onScroll);


     

       
67

       
 

       



     

       
68

       
+

       
    // Initialize provider after frame is built


     

       
69

       
 

       
    WidgetsBinding.instance.addPostFrameCallback((_) {


     

       
70

       
 

       
      if (mounted) {


     

       
71

       
+

       
        _initializeProvider();


     

       
72

       
+

       
        _setupAuthListener();


     

       
73

       
+

       
      }


     

       
74

       
+

       
    });


     

       
75

       
+

       
  }


     

       
76

       
+

       



     

       
77

       
+

       
  /// Listen for auth state changes to handle sign-out


     

       
78

       
+

       
  void _setupAuthListener() {


     

       
79

       
+

       
    final authProvider = context.read<AuthProvider>();


     

       
80

       
+

       
    authProvider.addListener(_onAuthChanged);


     

       
81

       
+

       
  }


     

       
82

       
+

       



     

       
83

       
+

       
  /// Handle auth state changes (specifically sign-out)


     

       
84

       
+

       
  void _onAuthChanged() {


     

       
85

       
+

       
    if (!mounted) return;


     

       
86

       
+

       



     

       
87

       
+

       
    final authProvider = context.read<AuthProvider>();


     

       
88

       
+

       



     

       
89

       
+

       
    // If user signed out while viewing this screen, navigate back


     

       
90

       
+

       
    // The CommentsProviderCache has already disposed our provider


     

       
91

       
+

       
    if (!authProvider.isAuthenticated && _isInitialized && !_providerInvalidated) {


     

       
92

       
+

       
      _providerInvalidated = true;


     

       
93

       
+

       



     

       
94

       
+

       
      if (kDebugMode) {


     

       
95

       
+

       
        debugPrint('🚪 User signed out - cleaning up PostDetailScreen');


     

       
96

       
+

       
      }


     

       
97

       
+

       



     

       
98

       
+

       
      // Remove listener from provider (it's disposed but this is safe)


     

       
99

       
+

       
      try {


     

       
100

       
+

       
        _commentsProvider.removeListener(_onProviderChanged);


     

       
101

       
+

       
      } on Exception {


     

       
102

       
+

       
        // Provider already disposed - expected


     

       
103

       
+

       
      }


     

       
104

       
+

       



     

       
105

       
+

       
      // Navigate back to feed


     

       
106

       
+

       
      if (mounted) {


     

       
107

       
+

       
        Navigator.of(context).popUntil((route) => route.isFirst);


     

       
108

       
+

       
      }


     

       
109

       
+

       
    }


     

       
110

       
+

       
  }


     

       
111

       
+

       



     

       
112

       
+

       
  /// Initialize provider from cache and restore state


     

       
113

       
+

       
  void _initializeProvider() {


     

       
114

       
+

       
    // Get or create provider from cache


     

       
115

       
+

       
    final cache = context.read<CommentsProviderCache>();


     

       
116

       
+

       
    _commentsCache = cache;


     

       
117

       
+

       
    _commentsProvider = cache.acquireProvider(


     

       
118

       
+

       
      postUri: widget.post.post.uri,


     

       
119

       
+

       
      postCid: widget.post.post.cid,


     

       
120

       
+

       
    );


     

       
121

       
+

       



     

       
122

       
+

       
    // Listen for changes to trigger rebuilds


     

       
123

       
+

       
    _commentsProvider.addListener(_onProviderChanged);


     

       
124

       
+

       



     

       
125

       
+

       
    // Check if we already have cached data


     

       
126

       
+

       
    if (_commentsProvider.comments.isNotEmpty) {


     

       
127

       
+

       
      // Already have data - restore scroll position immediately


     

       
128

       
+

       
      if (kDebugMode) {


     

       
129

       
+

       
        debugPrint(


     

       
130

       
+

       
          '📦 Using cached comments (${_commentsProvider.comments.length})',


     

       
131

       
+

       
        );


     

       
132

       
+

       
      }


     

       
133

       
+

       
      _restoreScrollPosition();


     

       
134

       
+

       



     

       
135

       
+

       
      // Background refresh if data is stale


     

       
136

       
+

       
      if (_commentsProvider.isStale) {


     

       
137

       
+

       
        if (kDebugMode) {


     

       
138

       
+

       
          debugPrint('🔄 Data stale, refreshing in background');


     

       
139

       
+

       
        }


     

       
140

       
+

       
        _commentsProvider.loadComments(refresh: true);


     

       
141

       
 

       
      }


     

       
142

       
+

       
    } else {


     

       
143

       
+

       
      // No cached data - load fresh


     

       
144

       
+

       
      _commentsProvider.loadComments(refresh: true);


     

       
145

       
+

       
    }


     

       
146

       
+

       



     

       
147

       
+

       
    setState(() {


     

       
148

       
+

       
      _isInitialized = true;


     

       
149

       
 

       
    });


     

       
150

       
 

       
  }


     

       
151

       
 

       



     

       
152

       
 

       
  @override


     

       
153

       
 

       
  void dispose() {


     

       
154

       
+

       
    // Remove auth listener


     

       
155

       
+

       
    try {


     

       
156

       
+

       
      context.read<AuthProvider>().removeListener(_onAuthChanged);


     

       
157

       
+

       
    } on Exception {


     

       
158

       
+

       
      // Context may not be valid during dispose


     

       
159

       
+

       
    }


     

       
160

       
+

       



     

       
161

       
+

       
    // Release provider pin in cache (prevents LRU eviction disposing an active


     

       
162

       
+

       
    // provider while this screen is in the navigation stack).


     

       
163

       
+

       
    if (_isInitialized) {


     

       
164

       
+

       
      try {


     

       
165

       
+

       
        _commentsCache?.releaseProvider(widget.post.post.uri);


     

       
166

       
+

       
      } on Exception {


     

       
167

       
+

       
        // Cache may already be disposed


     

       
168

       
+

       
      }


     

       
169

       
+

       
    }


     

       
170

       
+

       



     

       
171

       
+

       
    // Remove provider listener if not already invalidated


     

       
172

       
+

       
    if (_isInitialized && !_providerInvalidated) {


     

       
173

       
+

       
      try {


     

       
174

       
+

       
        _commentsProvider.removeListener(_onProviderChanged);


     

       
175

       
+

       
      } on Exception {


     

       
176

       
+

       
        // Provider may already be disposed


     

       
177

       
+

       
      }


     

       
178

       
+

       
    }


     

       
179

       
 

       
    _scrollController.dispose();


     

       
180

       
 

       
    super.dispose();


     

       
181

       
 

       
  }


     

       
182

       
 

       



     

       
183

       
+

       
  /// Handle provider changes


     

       
184

       
+

       
  void _onProviderChanged() {


     

       
185

       
+

       
    if (mounted) {


     

       
186

       
+

       
      setState(() {});


     

       
187

       
+

       
    }


     

       

       

       
     

       

       

       
     

       
188

       
 

       
  }


     

       
189

       
 

       



     

       
190

       
+

       
  /// Restore scroll position from provider


     

       
191

       
+

       
  void _restoreScrollPosition() {


     

       
192

       
+

       
    final savedPosition = _commentsProvider.scrollPosition;


     

       
193

       
+

       
    if (savedPosition <= 0) {


     

       
194

       
+

       
      return;


     

       
195

       
+

       
    }


     

       
196

       
+

       



     

       
197

       
+

       
    WidgetsBinding.instance.addPostFrameCallback((_) {


     

       
198

       
+

       
      if (!mounted || !_scrollController.hasClients) {


     

       
199

       
+

       
        return;


     

       
200

       
+

       
      }


     

       
201

       
 

       



     

       
202

       
+

       
      final maxExtent = _scrollController.position.maxScrollExtent;


     

       
203

       
+

       
      final targetPosition = savedPosition.clamp(0.0, maxExtent);


     

       
204

       
+

       



     

       
205

       
+

       
      if (targetPosition > 0) {


     

       
206

       
+

       
        _scrollController.jumpTo(targetPosition);


     

       
207

       
+

       
        if (kDebugMode) {


     

       
208

       
+

       
          debugPrint('📍 Restored scroll to $targetPosition (max: $maxExtent)');


     

       
209

       
+

       
        }


     

       
210

       
+

       
      }


     

       
211

       
 

       
    });


     

       
212

       
+

       
  }


     

       
213

       
 

       



     

       
214

       
+

       
  /// Handle sort changes from dropdown


     

       
215

       
+

       
  Future<void> _onSortChanged(String newSort) async {


     

       
216

       
+

       
    final success = await _commentsProvider.setSortOption(newSort);


     

       
217

       
 

       



     

       
218

       
+

       
    // Show error snackbar if sort change failed


     

       
219

       
 

       
    if (!success && mounted) {


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
220

       
 

       
      ScaffoldMessenger.of(context).showSnackBar(


     

       
221

       
 

       
        SnackBar(


     

       
222

       
 

       
          content: const Text('Failed to change sort order. Please try again.'),


     
···

       
237

       
 

       



     

       
238

       
 

       
  /// Handle scroll for pagination


     

       
239

       
 

       
  void _onScroll() {


     

       
240

       
+

       
    // Don't interact with disposed provider


     

       
241

       
+

       
    if (_providerInvalidated) return;


     

       
242

       
+

       



     

       
243

       
+

       
    // Save scroll position to provider on every scroll event


     

       
244

       
+

       
    if (_scrollController.hasClients) {


     

       
245

       
+

       
      _commentsProvider.saveScrollPosition(_scrollController.position.pixels);


     

       
246

       
+

       
    }


     

       
247

       
+

       



     

       
248

       
+

       
    // Load more comments when near bottom


     

       
249

       
 

       
    if (_scrollController.position.pixels >=


     

       
250

       
 

       
        _scrollController.position.maxScrollExtent - 200) {


     

       
251

       
+

       
      _commentsProvider.loadMoreComments();


     

       
252

       
 

       
    }


     

       
253

       
 

       
  }


     

       
254

       
 

       



     

       
255

       
 

       
  /// Handle pull-to-refresh


     

       
256

       
 

       
  Future<void> _onRefresh() async {


     

       
257

       
+

       
    // Don't interact with disposed provider


     

       
258

       
+

       
    if (_providerInvalidated) return;


     

       
259

       
+

       



     

       
260

       
+

       
    await _commentsProvider.refreshComments();


     

       
261

       
 

       
  }


     

       
262

       
 

       



     

       
263

       
 

       
  @override


     

       
264

       
 

       
  Widget build(BuildContext context) {


     

       
265

       
+

       
    // Show loading until provider is initialized


     

       
266

       
+

       
    if (!_isInitialized) {


     

       
267

       
+

       
      return const Scaffold(


     

       
268

       
+

       
        backgroundColor: AppColors.background,


     

       
269

       
+

       
        body: FullScreenLoading(),


     

       
270

       
+

       
      );


     

       
271

       
+

       
    }


     

       
272

       
+

       



     

       
273

       
+

       
    // If provider was invalidated (sign-out), show loading while navigating away


     

       
274

       
+

       
    if (_providerInvalidated) {


     

       
275

       
+

       
      return const Scaffold(


     

       
276

       
+

       
        backgroundColor: AppColors.background,


     

       
277

       
+

       
        body: FullScreenLoading(),


     

       
278

       
+

       
      );


     

       
279

       
+

       
    }


     

       
280

       
+

       



     

       
281

       
+

       
    // Provide the cached CommentsProvider to descendant widgets


     

       
282

       
+

       
    return ChangeNotifierProvider.value(


     

       
283

       
+

       
      value: _commentsProvider,


     

       
284

       
+

       
      child: Scaffold(


     

       
285

       
+

       
        backgroundColor: AppColors.background,


     

       
286

       
+

       
        body: _buildContent(),


     

       
287

       
+

       
        bottomNavigationBar: _buildActionBar(),


     

       
288

       
+

       
      ),


     

       
289

       
 

       
    );


     

       
290

       
 

       
  }


     

       
291

       
 

       



     
···

       
515

       
 

       
    Navigator.of(context).push(


     

       
516

       
 

       
      MaterialPageRoute<void>(


     

       
517

       
 

       
        builder:


     

       
518

       
+

       
            (context) => ReplyScreen(


     

       
519

       
+

       
              post: widget.post,


     

       
520

       
+

       
              onSubmit: _handleCommentSubmit,


     

       
521

       
+

       
              commentsProvider: _commentsProvider,


     

       
522

       
+

       
            ),


     

       
523

       
 

       
      ),


     

       
524

       
 

       
    );


     

       
525

       
 

       
  }


     

       
526

       
 

       



     

       
527

       
 

       
  /// Handle comment submission (reply to post)


     

       
528

       
 

       
  Future<void> _handleCommentSubmit(String content) async {


     

       

       

       
     

       
529

       
 

       
    final messenger = ScaffoldMessenger.of(context);


     

       
530

       
 

       



     

       
531

       
 

       
    try {


     

       
532

       
+

       
      await _commentsProvider.createComment(content: content);


     

       
533

       
 

       



     

       
534

       
 

       
      if (mounted) {


     

       
535

       
 

       
        messenger.showSnackBar(


     
···

       
559

       
 

       
    String content,


     

       
560

       
 

       
    ThreadViewComment parentComment,


     

       
561

       
 

       
  ) async {


     

       

       

       
     

       
562

       
 

       
    final messenger = ScaffoldMessenger.of(context);


     

       
563

       
 

       



     

       
564

       
 

       
    try {


     

       
565

       
+

       
      await _commentsProvider.createComment(


     

       
566

       
 

       
        content: content,


     

       
567

       
 

       
        parentComment: parentComment,


     

       
568

       
 

       
      );


     
···

       
611

       
 

       
            (context) => ReplyScreen(


     

       
612

       
 

       
              comment: comment,


     

       
613

       
 

       
              onSubmit: (content) => _handleCommentReply(content, comment),


     

       
614

       
+

       
              commentsProvider: _commentsProvider,


     

       
615

       
 

       
            ),


     

       
616

       
 

       
      ),


     

       
617

       
 

       
    );


     
···

       
624

       
 

       
  ) {


     

       
625

       
 

       
    Navigator.of(context).push(


     

       
626

       
 

       
      MaterialPageRoute<void>(


     

       
627

       
+

       
        builder:


     

       
628

       
+

       
            (context) => FocusedThreadScreen(


     

       
629

       
+

       
              thread: thread,


     

       
630

       
+

       
              ancestors: ancestors,


     

       
631

       
+

       
              onReply: _handleCommentReply,


     

       
632

       
+

       
              commentsProvider: _commentsProvider,


     

       
633

       
+

       
            ),


     

       
634

       
 

       
      ),


     

       
635

       
 

       
    );


     

       
636

       
 

       
  }


     
···

       
693

       
 

       
                  SliverSafeArea(


     

       
694

       
 

       
                    top: false,


     

       
695

       
 

       
                    sliver: SliverList(


     

       
696

       
+

       
                      delegate: SliverChildBuilderDelegate(


     

       
697

       
+

       
                        (context, index) {


     

       
698

       
+

       
                          // Post card (index 0)


     

       
699

       
+

       
                          if (index == 0) {


     

       
700

       
+

       
                            return Column(


     

       
701

       
+

       
                              children: [


     

       
702

       
+

       
                                // Reuse PostCard (hide comment button in


     

       
703

       
+

       
                                // detail view)


     

       
704

       
+

       
                                // Use ValueListenableBuilder to only rebuild


     

       
705

       
+

       
                                // when time changes


     

       
706

       
+

       
                                _PostHeader(


     

       
707

       
+

       
                                  post: widget.post,


     

       
708

       
+

       
                                  currentTimeNotifier:


     

       
709

       
+

       
                                      commentsProvider.currentTimeNotifier,


     

       
710

       
+

       
                                ),


     

       
711

       
+

       



     

       
712

       
+

       
                                // Visual divider before comments section


     

       
713

       
+

       
                                Container(


     

       
714

       
+

       
                                  margin: const EdgeInsets.symmetric(


     

       
715

       
+

       
                                    vertical: 16,


     

       
716

       
+

       
                                  ),


     

       
717

       
+

       
                                  height: 1,


     

       
718

       
+

       
                                  color: AppColors.border,


     

       
719

       
+

       
                                ),


     

       
720

       
 

       



     

       
721

       
+

       
                                // Comments header with sort dropdown


     

       
722

       
+

       
                                CommentsHeader(


     

       
723

       
+

       
                                  key: _commentsHeaderKey,


     

       
724

       
+

       
                                  commentCount: comments.length,


     

       
725

       
+

       
                                  currentSort: commentsProvider.sort,


     

       
726

       
+

       
                                  onSortChanged: _onSortChanged,


     

       
727

       
+

       
                                ),


     

       
728

       
+

       
                              ],


     

       
729

       
+

       
                            );


     

       
730

       
+

       
                          }


     

       
731

       
 

       



     

       
732

       
+

       
                          // Loading indicator or error at the end


     

       
733

       
+

       
                          if (index == comments.length + 1) {


     

       
734

       
+

       
                            if (isLoadingMore) {


     

       
735

       
+

       
                              return const InlineLoading();


     

       
736

       
+

       
                            }


     

       
737

       
+

       
                            if (error != null) {


     

       
738

       
+

       
                              return InlineError(


     

       
739

       
+

       
                                message: ErrorMessages.getUserFriendly(error),


     

       
740

       
+

       
                                onRetry: () {


     

       
741

       
+

       
                                  commentsProvider


     

       
742

       
+

       
                                    ..clearError()


     

       
743

       
+

       
                                    ..loadMoreComments();


     

       
744

       
+

       
                                },


     

       
745

       
+

       
                              );


     

       
746

       
+

       
                            }


     

       
747

       
+

       
                          }


     

       
748

       
 

       



     

       
749

       
+

       
                          // Comment item - use existing CommentThread widget


     

       
750

       
+

       
                          final comment = comments[index - 1];


     

       
751

       
+

       
                          return _CommentItem(


     

       
752

       
+

       
                            comment: comment,


     

       
753

       
+

       
                            currentTimeNotifier:


     

       
754

       
+

       
                                commentsProvider.currentTimeNotifier,


     

       
755

       
+

       
                            onCommentTap: _openReplyToComment,


     

       
756

       
+

       
                            collapsedComments:


     

       
757

       
+

       
                                commentsProvider.collapsedComments,


     

       
758

       
+

       
                            onCollapseToggle: commentsProvider.toggleCollapsed,


     

       
759

       
+

       
                            onContinueThread: _onContinueThread,


     

       

       

       
     

       

       

       
     

       
760

       
 

       
                          );


     

       
761

       
+

       
                        },


     

       
762

       
+

       
                        childCount:


     

       
763

       
+

       
                            1 +


     

       
764

       
+

       
                            comments.length +


     

       
765

       
+

       
                            (isLoadingMore || error != null ? 1 : 0),


     

       
766

       
+

       
                      ),


     

       
767

       
+

       
                    ),


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
768

       
 

       
                  ),


     

       
769

       
+

       
                ],


     

       
770

       
 

       
              ),


     

       
771

       
+

       
            ),


     

       

       

       
     

       

       

       
     

       
772

       
 

       
            // Prevents content showing through transparent status bar


     

       
773

       
 

       
            const StatusBarOverlay(),


     

       
774

       
 

       
          ],


     
···

       
834

       
 

       
  final Set<String> collapsedComments;


     

       
835

       
 

       
  final void Function(String uri)? onCollapseToggle;


     

       
836

       
 

       
  final void Function(ThreadViewComment, List<ThreadViewComment>)?


     

       
837

       
+

       
  onContinueThread;


     

       
838

       
 

       



     

       
839

       
 

       
  @override


     

       
840

       
 

       
  Widget build(BuildContext context) {
+217
lib/services/comments_provider_cache.dart 
···

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     
···

       
1

       
+

       
import 'dart:collection';


     

       
2

       
+

       



     

       
3

       
+

       
import 'package:flutter/foundation.dart';


     

       
4

       
+

       
import '../providers/auth_provider.dart';


     

       
5

       
+

       
import '../providers/comments_provider.dart';


     

       
6

       
+

       
import '../providers/vote_provider.dart';


     

       
7

       
+

       
import 'comment_service.dart';


     

       
8

       
+

       



     

       
9

       
+

       
/// Comments Provider Cache


     

       
10

       
+

       
///


     

       
11

       
+

       
/// Manages cached CommentsProvider instances per post URI using LRU eviction.


     

       
12

       
+

       
/// Inspired by Thunder app's architecture for instant back navigation.


     

       
13

       
+

       
///


     

       
14

       
+

       
/// Key features:


     

       
15

       
+

       
/// - One CommentsProvider per post URI


     

       
16

       
+

       
/// - LRU eviction (default: 15 most recent posts)


     

       
17

       
+

       
/// - Sign-out cleanup via AuthProvider listener


     

       
18

       
+

       
///


     

       
19

       
+

       
/// Usage:


     

       
20

       
+

       
/// ```dart


     

       
21

       
+

       
/// final cache = context.read<CommentsProviderCache>();


     

       
22

       
+

       
/// final provider = cache.getProvider(


     

       
23

       
+

       
///   postUri: post.uri,


     

       
24

       
+

       
///   postCid: post.cid,


     

       
25

       
+

       
/// );


     

       
26

       
+

       
/// ```


     

       
27

       
+

       
class CommentsProviderCache {


     

       
28

       
+

       
  CommentsProviderCache({


     

       
29

       
+

       
    required AuthProvider authProvider,


     

       
30

       
+

       
    required VoteProvider voteProvider,


     

       
31

       
+

       
    required CommentService commentService,


     

       
32

       
+

       
    this.maxSize = 15,


     

       
33

       
+

       
  }) : _authProvider = authProvider,


     

       
34

       
+

       
       _voteProvider = voteProvider,


     

       
35

       
+

       
       _commentService = commentService {


     

       
36

       
+

       
    _wasAuthenticated = _authProvider.isAuthenticated;


     

       
37

       
+

       
    _authProvider.addListener(_onAuthChanged);


     

       
38

       
+

       
  }


     

       
39

       
+

       



     

       
40

       
+

       
  final AuthProvider _authProvider;


     

       
41

       
+

       
  final VoteProvider _voteProvider;


     

       
42

       
+

       
  final CommentService _commentService;


     

       
43

       
+

       



     

       
44

       
+

       
  /// Maximum number of providers to cache


     

       
45

       
+

       
  final int maxSize;


     

       
46

       
+

       



     

       
47

       
+

       
  /// LRU cache - LinkedHashMap maintains insertion order


     

       
48

       
+

       
  /// Most recently accessed items are at the end


     

       
49

       
+

       
  final LinkedHashMap<String, CommentsProvider> _cache = LinkedHashMap();


     

       
50

       
+

       



     

       
51

       
+

       
  /// Reference counts for "in-use" providers.


     

       
52

       
+

       
  ///


     

       
53

       
+

       
  /// Screens that hold onto a provider instance should call [acquireProvider]


     

       
54

       
+

       
  /// and later [releaseProvider] to prevent LRU eviction from disposing a


     

       
55

       
+

       
  /// provider that is still mounted in the navigation stack.


     

       
56

       
+

       
  final Map<String, int> _refCounts = {};


     

       
57

       
+

       



     

       
58

       
+

       
  /// Track auth state for sign-out detection


     

       
59

       
+

       
  bool _wasAuthenticated = false;


     

       
60

       
+

       



     

       
61

       
+

       
  /// Acquire (get or create) a CommentsProvider for a post.


     

       
62

       
+

       
  ///


     

       
63

       
+

       
  /// This "pins" the provider to avoid LRU eviction while in use.


     

       
64

       
+

       
  /// Call [releaseProvider] when the consumer unmounts.


     

       
65

       
+

       
  ///


     

       
66

       
+

       
  /// If provider exists in cache, moves it to end (LRU touch).


     

       
67

       
+

       
  /// If cache is full, evicts the oldest *unreferenced* provider before


     

       
68

       
+

       
  /// creating a new one. If all providers are currently referenced, the cache


     

       
69

       
+

       
  /// may temporarily exceed [maxSize] to avoid disposing active providers.


     

       
70

       
+

       
  CommentsProvider acquireProvider({


     

       
71

       
+

       
    required String postUri,


     

       
72

       
+

       
    required String postCid,


     

       
73

       
+

       
  }) {


     

       
74

       
+

       
    final provider = _getOrCreateProvider(postUri: postUri, postCid: postCid);


     

       
75

       
+

       
    _refCounts[postUri] = (_refCounts[postUri] ?? 0) + 1;


     

       
76

       
+

       
    return provider;


     

       
77

       
+

       
  }


     

       
78

       
+

       



     

       
79

       
+

       
  /// Release a previously acquired provider for a post.


     

       
80

       
+

       
  ///


     

       
81

       
+

       
  /// Once released, the provider becomes eligible for LRU eviction.


     

       
82

       
+

       
  void releaseProvider(String postUri) {


     

       
83

       
+

       
    final current = _refCounts[postUri];


     

       
84

       
+

       
    if (current == null) {


     

       
85

       
+

       
      return;


     

       
86

       
+

       
    }


     

       
87

       
+

       



     

       
88

       
+

       
    if (current <= 1) {


     

       
89

       
+

       
      _refCounts.remove(postUri);


     

       
90

       
+

       
    } else {


     

       
91

       
+

       
      _refCounts[postUri] = current - 1;


     

       
92

       
+

       
    }


     

       
93

       
+

       



     

       
94

       
+

       
    _evictIfNeeded();


     

       
95

       
+

       
  }


     

       
96

       
+

       



     

       
97

       
+

       
  /// Legacy name kept for compatibility: prefer [acquireProvider].


     

       
98

       
+

       
  CommentsProvider getProvider({


     

       
99

       
+

       
    required String postUri,


     

       
100

       
+

       
    required String postCid,


     

       
101

       
+

       
  }) => acquireProvider(postUri: postUri, postCid: postCid);


     

       
102

       
+

       



     

       
103

       
+

       
  CommentsProvider _getOrCreateProvider({


     

       
104

       
+

       
    required String postUri,


     

       
105

       
+

       
    required String postCid,


     

       
106

       
+

       
  }) {


     

       
107

       
+

       
    // Check if already cached


     

       
108

       
+

       
    if (_cache.containsKey(postUri)) {


     

       
109

       
+

       
      // Move to end (most recently used)


     

       
110

       
+

       
      final provider = _cache.remove(postUri)!;


     

       
111

       
+

       
      _cache[postUri] = provider;


     

       
112

       
+

       



     

       
113

       
+

       
      if (kDebugMode) {


     

       
114

       
+

       
        debugPrint('📦 Cache hit: $postUri (${_cache.length}/$maxSize)');


     

       
115

       
+

       
      }


     

       
116

       
+

       



     

       
117

       
+

       
      return provider;


     

       
118

       
+

       
    }


     

       
119

       
+

       



     

       
120

       
+

       
    // Evict unreferenced providers if at capacity.


     

       
121

       
+

       
    if (_cache.length >= maxSize) {


     

       
122

       
+

       
      _evictIfNeeded(includingOne: true);


     

       
123

       
+

       
    }


     

       
124

       
+

       



     

       
125

       
+

       
    // Create new provider


     

       
126

       
+

       
    final provider = CommentsProvider(


     

       
127

       
+

       
      _authProvider,


     

       
128

       
+

       
      voteProvider: _voteProvider,


     

       
129

       
+

       
      commentService: _commentService,


     

       
130

       
+

       
      postUri: postUri,


     

       
131

       
+

       
      postCid: postCid,


     

       
132

       
+

       
    );


     

       
133

       
+

       



     

       
134

       
+

       
    _cache[postUri] = provider;


     

       
135

       
+

       



     

       
136

       
+

       
    if (kDebugMode) {


     

       
137

       
+

       
      debugPrint('📦 Cache miss: $postUri (${_cache.length}/$maxSize)');


     

       
138

       
+

       
      if (_cache.length > maxSize) {


     

       
139

       
+

       
        debugPrint(


     

       
140

       
+

       
          '📌 Cache exceeded maxSize because active providers are pinned',


     

       
141

       
+

       
        );


     

       
142

       
+

       
      }


     

       
143

       
+

       
    }


     

       
144

       
+

       



     

       
145

       
+

       
    return provider;


     

       
146

       
+

       
  }


     

       
147

       
+

       



     

       
148

       
+

       
  void _evictIfNeeded({bool includingOne = false}) {


     

       
149

       
+

       
    final targetSize = includingOne ? maxSize - 1 : maxSize;


     

       
150

       
+

       
    while (_cache.length > targetSize) {


     

       
151

       
+

       
      String? oldestUnreferencedKey;


     

       
152

       
+

       
      for (final key in _cache.keys) {


     

       
153

       
+

       
        if ((_refCounts[key] ?? 0) == 0) {


     

       
154

       
+

       
          oldestUnreferencedKey = key;


     

       
155

       
+

       
          break;


     

       
156

       
+

       
        }


     

       
157

       
+

       
      }


     

       
158

       
+

       



     

       
159

       
+

       
      if (oldestUnreferencedKey == null) {


     

       
160

       
+

       
        break;


     

       
161

       
+

       
      }


     

       
162

       
+

       



     

       
163

       
+

       
      final evicted = _cache.remove(oldestUnreferencedKey);


     

       
164

       
+

       
      evicted?.dispose();


     

       
165

       
+

       



     

       
166

       
+

       
      if (kDebugMode) {


     

       
167

       
+

       
        debugPrint('🗑️ Cache evict: $oldestUnreferencedKey');


     

       
168

       
+

       
      }


     

       
169

       
+

       
    }


     

       
170

       
+

       
  }


     

       
171

       
+

       



     

       
172

       
+

       
  /// Check if provider exists without creating


     

       
173

       
+

       
  bool hasProvider(String postUri) => _cache.containsKey(postUri);


     

       
174

       
+

       



     

       
175

       
+

       
  /// Get existing provider without creating (for checking state)


     

       
176

       
+

       
  CommentsProvider? peekProvider(String postUri) => _cache[postUri];


     

       
177

       
+

       



     

       
178

       
+

       
  /// Remove specific provider (e.g., after post deletion)


     

       
179

       
+

       
  void removeProvider(String postUri) {


     

       
180

       
+

       
    final provider = _cache.remove(postUri);


     

       
181

       
+

       
    _refCounts.remove(postUri);


     

       
182

       
+

       
    provider?.dispose();


     

       
183

       
+

       
  }


     

       
184

       
+

       



     

       
185

       
+

       
  /// Handle auth state changes - clear all on sign-out


     

       
186

       
+

       
  void _onAuthChanged() {


     

       
187

       
+

       
    final isAuthenticated = _authProvider.isAuthenticated;


     

       
188

       
+

       



     

       
189

       
+

       
    // Clear all cached providers on sign-out


     

       
190

       
+

       
    if (_wasAuthenticated && !isAuthenticated) {


     

       
191

       
+

       
      if (kDebugMode) {


     

       
192

       
+

       
        debugPrint('🔒 User signed out - clearing ${_cache.length} cached comment providers');


     

       
193

       
+

       
      }


     

       
194

       
+

       
      clearAll();


     

       
195

       
+

       
    }


     

       
196

       
+

       



     

       
197

       
+

       
    _wasAuthenticated = isAuthenticated;


     

       
198

       
+

       
  }


     

       
199

       
+

       



     

       
200

       
+

       
  /// Clear all cached providers


     

       
201

       
+

       
  void clearAll() {


     

       
202

       
+

       
    for (final provider in _cache.values) {


     

       
203

       
+

       
      provider.dispose();


     

       
204

       
+

       
    }


     

       
205

       
+

       
    _cache.clear();


     

       
206

       
+

       
    _refCounts.clear();


     

       
207

       
+

       
  }


     

       
208

       
+

       



     

       
209

       
+

       
  /// Current cache size


     

       
210

       
+

       
  int get size => _cache.length;


     

       
211

       
+

       



     

       
212

       
+

       
  /// Dispose and cleanup


     

       
213

       
+

       
  void dispose() {


     

       
214

       
+

       
    _authProvider.removeListener(_onAuthChanged);


     

       
215

       
+

       
    clearAll();


     

       
216

       
+

       
  }


     

       
217

       
+

       
}
+65 -396
test/providers/comments_provider_test.dart 
···

       
39

       
 

       



     

       
40

       
 

       
      commentsProvider = CommentsProvider(


     

       
41

       
 

       
        mockAuthProvider,


     

       

       

       
     

       

       

       
     

       
42

       
 

       
        apiService: mockApiService,


     

       
43

       
 

       
        voteProvider: mockVoteProvider,


     

       
44

       
 

       
      );


     
···

       
72

       
 

       
          ),


     

       
73

       
 

       
        ).thenAnswer((_) async => mockResponse);


     

       
74

       
 

       



     

       
75

       
-

       
        await commentsProvider.loadComments(


     

       
76

       
-

       
          postUri: testPostUri,


     

       
77

       
-

       
          postCid: testPostCid,


     

       
78

       
-

       
          refresh: true,


     

       
79

       
-

       
        );


     

       
80

       
 

       



     

       
81

       
 

       
        expect(commentsProvider.comments.length, 2);


     

       
82

       
 

       
        expect(commentsProvider.hasMore, true);


     
···

       
98

       
 

       
          ),


     

       
99

       
 

       
        ).thenAnswer((_) async => mockResponse);


     

       
100

       
 

       



     

       
101

       
-

       
        await commentsProvider.loadComments(


     

       
102

       
-

       
          postUri: testPostUri,


     

       
103

       
-

       
          postCid: testPostCid,


     

       
104

       
-

       
          refresh: true,


     

       
105

       
-

       
        );


     

       
106

       
 

       



     

       
107

       
 

       
        expect(commentsProvider.comments.isEmpty, true);


     

       
108

       
 

       
        expect(commentsProvider.hasMore, false);


     
···

       
121

       
 

       
          ),


     

       
122

       
 

       
        ).thenThrow(Exception('Network error'));


     

       
123

       
 

       



     

       
124

       
-

       
        await commentsProvider.loadComments(


     

       
125

       
-

       
          postUri: testPostUri,


     

       
126

       
-

       
          postCid: testPostCid,


     

       
127

       
-

       
          refresh: true,


     

       
128

       
-

       
        );


     

       
129

       
 

       



     

       
130

       
 

       
        expect(commentsProvider.error, isNotNull);


     

       
131

       
 

       
        expect(commentsProvider.error, contains('Network error'));


     
···

       
145

       
 

       
          ),


     

       
146

       
 

       
        ).thenThrow(Exception('TimeoutException: Request timed out'));


     

       
147

       
 

       



     

       
148

       
-

       
        await commentsProvider.loadComments(


     

       
149

       
-

       
          postUri: testPostUri,


     

       
150

       
-

       
          postCid: testPostCid,


     

       
151

       
-

       
          refresh: true,


     

       
152

       
-

       
        );


     

       
153

       
 

       



     

       
154

       
 

       
        expect(commentsProvider.error, isNotNull);


     

       
155

       
 

       
        expect(commentsProvider.isLoading, false);


     
···

       
174

       
 

       
          ),


     

       
175

       
 

       
        ).thenAnswer((_) async => firstResponse);


     

       
176

       
 

       



     

       
177

       
-

       
        await commentsProvider.loadComments(


     

       
178

       
-

       
          postUri: testPostUri,


     

       
179

       
-

       
          postCid: testPostCid,


     

       
180

       
-

       
          refresh: true,


     

       
181

       
-

       
        );


     

       
182

       
 

       



     

       
183

       
 

       
        expect(commentsProvider.comments.length, 1);


     

       
184

       
 

       



     
···

       
200

       
 

       
          ),


     

       
201

       
 

       
        ).thenAnswer((_) async => secondResponse);


     

       
202

       
 

       



     

       
203

       
-

       
        await commentsProvider.loadComments(


     

       
204

       
-

       
          postUri: testPostUri,


     

       
205

       
-

       
          postCid: testPostCid,


     

       
206

       
-

       
        );


     

       
207

       
 

       



     

       
208

       
 

       
        expect(commentsProvider.comments.length, 2);


     

       
209

       
 

       
        expect(commentsProvider.comments[0].comment.uri, 'comment1');


     
···

       
229

       
 

       
          ),


     

       
230

       
 

       
        ).thenAnswer((_) async => firstResponse);


     

       
231

       
 

       



     

       
232

       
-

       
        await commentsProvider.loadComments(


     

       
233

       
-

       
          postUri: testPostUri,


     

       
234

       
-

       
          postCid: testPostCid,


     

       
235

       
-

       
          refresh: true,


     

       
236

       
-

       
        );


     

       
237

       
 

       



     

       
238

       
 

       
        expect(commentsProvider.comments.length, 1);


     

       
239

       
 

       



     
···

       
257

       
 

       
          ),


     

       
258

       
 

       
        ).thenAnswer((_) async => refreshResponse);


     

       
259

       
 

       



     

       
260

       
-

       
        await commentsProvider.loadComments(


     

       
261

       
-

       
          postUri: testPostUri,


     

       
262

       
-

       
          postCid: testPostCid,


     

       
263

       
-

       
          refresh: true,


     

       
264

       
-

       
        );


     

       
265

       
 

       



     

       
266

       
 

       
        expect(commentsProvider.comments.length, 2);


     

       
267

       
 

       
        expect(commentsProvider.comments[0].comment.uri, 'comment2');


     
···

       
285

       
 

       
          ),


     

       
286

       
 

       
        ).thenAnswer((_) async => response);


     

       
287

       
 

       



     

       
288

       
-

       
        await commentsProvider.loadComments(


     

       
289

       
-

       
          postUri: testPostUri,


     

       
290

       
-

       
          postCid: testPostCid,


     

       
291

       
-

       
          refresh: true,


     

       
292

       
-

       
        );


     

       
293

       
 

       



     

       
294

       
 

       
        expect(commentsProvider.hasMore, false);


     

       
295

       
 

       
      });


     

       
296

       
 

       



     

       
297

       
-

       
      test('should reset state when loading different post', () async {


     

       
298

       
-

       
        // Load first post


     

       
299

       
-

       
        final firstResponse = CommentsResponse(


     

       
300

       
-

       
          post: {},


     

       
301

       
-

       
          comments: [_createMockThreadComment('comment1')],


     

       
302

       
-

       
          cursor: 'cursor-1',


     

       
303

       
-

       
        );


     

       
304

       
-

       



     

       
305

       
-

       
        when(


     

       
306

       
-

       
          mockApiService.getComments(


     

       
307

       
-

       
            postUri: anyNamed('postUri'),


     

       
308

       
-

       
            sort: anyNamed('sort'),


     

       
309

       
-

       
            timeframe: anyNamed('timeframe'),


     

       
310

       
-

       
            depth: anyNamed('depth'),


     

       
311

       
-

       
            limit: anyNamed('limit'),


     

       
312

       
-

       
            cursor: anyNamed('cursor'),


     

       
313

       
-

       
          ),


     

       
314

       
-

       
        ).thenAnswer((_) async => firstResponse);


     

       
315

       
-

       



     

       
316

       
-

       
        await commentsProvider.loadComments(


     

       
317

       
-

       
          postUri: testPostUri,


     

       
318

       
-

       
          postCid: testPostCid,


     

       
319

       
-

       
          refresh: true,


     

       
320

       
-

       
        );


     

       
321

       
-

       



     

       
322

       
-

       
        expect(commentsProvider.comments.length, 1);


     

       
323

       
-

       



     

       
324

       
-

       
        // Load different post


     

       
325

       
-

       
        const differentPostUri =


     

       
326

       
-

       
            'at://did:plc:test/social.coves.post.record/456';


     

       
327

       
-

       
        const differentPostCid = 'different-post-cid';


     

       
328

       
-

       
        final secondResponse = CommentsResponse(


     

       
329

       
-

       
          post: {},


     

       
330

       
-

       
          comments: [_createMockThreadComment('comment2')],


     

       
331

       
-

       
        );


     

       
332

       
-

       



     

       
333

       
-

       
        when(


     

       
334

       
-

       
          mockApiService.getComments(


     

       
335

       
-

       
            postUri: differentPostUri,


     

       
336

       
-

       
            sort: anyNamed('sort'),


     

       
337

       
-

       
            timeframe: anyNamed('timeframe'),


     

       
338

       
-

       
            depth: anyNamed('depth'),


     

       
339

       
-

       
            limit: anyNamed('limit'),


     

       
340

       
-

       
            cursor: anyNamed('cursor'),


     

       
341

       
-

       
          ),


     

       
342

       
-

       
        ).thenAnswer((_) async => secondResponse);


     

       
343

       
-

       



     

       
344

       
-

       
        await commentsProvider.loadComments(


     

       
345

       
-

       
          postUri: differentPostUri,


     

       
346

       
-

       
          postCid: differentPostCid,


     

       
347

       
-

       
          refresh: true,


     

       
348

       
-

       
        );


     

       
349

       
-

       



     

       
350

       
-

       
        // Should have reset and loaded new comments


     

       
351

       
-

       
        expect(commentsProvider.comments.length, 1);


     

       
352

       
-

       
        expect(commentsProvider.comments[0].comment.uri, 'comment2');


     

       
353

       
-

       
      });


     

       
354

       
 

       



     

       
355

       
 

       
      test('should not load when already loading', () async {


     

       
356

       
 

       
        final response = CommentsResponse(


     
···

       
374

       
 

       
        });


     

       
375

       
 

       



     

       
376

       
 

       
        // Start first load


     

       
377

       
-

       
        final firstFuture = commentsProvider.loadComments(


     

       
378

       
-

       
          postUri: testPostUri,


     

       
379

       
-

       
          postCid: testPostCid,


     

       
380

       
-

       
          refresh: true,


     

       
381

       
-

       
        );


     

       
382

       
 

       



     

       
383

       
 

       
        // Try to load again while still loading - should schedule a refresh


     

       
384

       
-

       
        await commentsProvider.loadComments(


     

       
385

       
-

       
          postUri: testPostUri,


     

       
386

       
-

       
          postCid: testPostCid,


     

       
387

       
-

       
          refresh: true,


     

       
388

       
-

       
        );


     

       
389

       
 

       



     

       
390

       
 

       
        await firstFuture;


     

       
391

       
 

       
        // Wait a bit for the pending refresh to execute


     
···

       
425

       
 

       
            ),


     

       
426

       
 

       
          ).thenAnswer((_) async => mockResponse);


     

       
427

       
 

       



     

       
428

       
-

       
          await commentsProvider.loadComments(


     

       
429

       
-

       
            postUri: testPostUri,


     

       
430

       
-

       
            postCid: testPostCid,


     

       
431

       
-

       
            refresh: true,


     

       
432

       
-

       
          );


     

       
433

       
 

       



     

       
434

       
 

       
          expect(commentsProvider.comments.length, 1);


     

       
435

       
 

       
          expect(commentsProvider.error, null);


     
···

       
455

       
 

       
          ),


     

       
456

       
 

       
        ).thenAnswer((_) async => mockResponse);


     

       
457

       
 

       



     

       
458

       
-

       
        await commentsProvider.loadComments(


     

       
459

       
-

       
          postUri: testPostUri,


     

       
460

       
-

       
          postCid: testPostCid,


     

       
461

       
-

       
          refresh: true,


     

       
462

       
-

       
        );


     

       
463

       
 

       



     

       
464

       
 

       
        expect(commentsProvider.comments.length, 1);


     

       
465

       
 

       
        expect(commentsProvider.error, null);


     
···

       
486

       
 

       
          ),


     

       
487

       
 

       
        ).thenAnswer((_) async => initialResponse);


     

       
488

       
 

       



     

       
489

       
-

       
        await commentsProvider.loadComments(


     

       
490

       
-

       
          postUri: testPostUri,


     

       
491

       
-

       
          postCid: testPostCid,


     

       
492

       
-

       
          refresh: true,


     

       
493

       
-

       
        );


     

       
494

       
 

       



     

       
495

       
 

       
        expect(commentsProvider.sort, 'hot');


     

       
496

       
 

       



     
···

       
544

       
 

       
          ),


     

       
545

       
 

       
        ).thenAnswer((_) async => response);


     

       
546

       
 

       



     

       
547

       
-

       
        await commentsProvider.loadComments(


     

       
548

       
-

       
          postUri: testPostUri,


     

       
549

       
-

       
          postCid: testPostCid,


     

       
550

       
-

       
          refresh: true,


     

       
551

       
-

       
        );


     

       
552

       
 

       



     

       
553

       
 

       
        // Try to set same sort option


     

       
554

       
 

       
        await commentsProvider.setSortOption('hot');


     
···

       
587

       
 

       
          ),


     

       
588

       
 

       
        ).thenAnswer((_) async => initialResponse);


     

       
589

       
 

       



     

       
590

       
-

       
        await commentsProvider.loadComments(


     

       
591

       
-

       
          postUri: testPostUri,


     

       
592

       
-

       
          postCid: testPostCid,


     

       
593

       
-

       
          refresh: true,


     

       
594

       
-

       
        );


     

       
595

       
 

       



     

       
596

       
 

       
        expect(commentsProvider.comments.length, 1);


     

       
597

       
 

       



     
···

       
619

       
 

       
        expect(commentsProvider.comments.length, 2);


     

       
620

       
 

       
      });


     

       
621

       
 

       



     

       
622

       
-

       
      test('should not refresh if no post loaded', () async {


     

       
623

       
-

       
        await commentsProvider.refreshComments();


     

       
624

       
-

       



     

       
625

       
-

       
        verifyNever(


     

       
626

       
-

       
          mockApiService.getComments(


     

       
627

       
-

       
            postUri: anyNamed('postUri'),


     

       
628

       
-

       
            sort: anyNamed('sort'),


     

       
629

       
-

       
            timeframe: anyNamed('timeframe'),


     

       
630

       
-

       
            depth: anyNamed('depth'),


     

       
631

       
-

       
            limit: anyNamed('limit'),


     

       
632

       
-

       
            cursor: anyNamed('cursor'),


     

       
633

       
-

       
          ),


     

       
634

       
-

       
        );


     

       
635

       
-

       
      });


     

       
636

       
 

       
    });


     

       
637

       
 

       



     

       
638

       
 

       
    group('loadMoreComments', () {


     
···

       
657

       
 

       
          ),


     

       
658

       
 

       
        ).thenAnswer((_) async => initialResponse);


     

       
659

       
 

       



     

       
660

       
-

       
        await commentsProvider.loadComments(


     

       
661

       
-

       
          postUri: testPostUri,


     

       
662

       
-

       
          postCid: testPostCid,


     

       
663

       
-

       
          refresh: true,


     

       
664

       
-

       
        );


     

       
665

       
 

       



     

       
666

       
 

       
        expect(commentsProvider.hasMore, true);


     

       
667

       
 

       



     
···

       
705

       
 

       
          ),


     

       
706

       
 

       
        ).thenAnswer((_) async => response);


     

       
707

       
 

       



     

       
708

       
-

       
        await commentsProvider.loadComments(


     

       
709

       
-

       
          postUri: testPostUri,


     

       
710

       
-

       
          postCid: testPostCid,


     

       
711

       
-

       
          refresh: true,


     

       
712

       
-

       
        );


     

       
713

       
 

       



     

       
714

       
 

       
        expect(commentsProvider.hasMore, false);


     

       
715

       
 

       



     
···

       
729

       
 

       
        ).called(1);


     

       
730

       
 

       
      });


     

       
731

       
 

       



     

       
732

       
-

       
      test('should not load more if no post loaded', () async {


     

       
733

       
-

       
        await commentsProvider.loadMoreComments();


     

       
734

       
-

       



     

       
735

       
-

       
        verifyNever(


     

       
736

       
-

       
          mockApiService.getComments(


     

       
737

       
-

       
            postUri: anyNamed('postUri'),


     

       
738

       
-

       
            sort: anyNamed('sort'),


     

       
739

       
-

       
            timeframe: anyNamed('timeframe'),


     

       
740

       
-

       
            depth: anyNamed('depth'),


     

       
741

       
-

       
            limit: anyNamed('limit'),


     

       
742

       
-

       
            cursor: anyNamed('cursor'),


     

       
743

       
-

       
          ),


     

       
744

       
-

       
        );


     

       
745

       
-

       
      });


     

       
746

       
 

       
    });


     

       
747

       
 

       



     

       
748

       
 

       
    group('retry', () {


     
···

       
761

       
 

       
          ),


     

       
762

       
 

       
        ).thenThrow(Exception('Network error'));


     

       
763

       
 

       



     

       
764

       
-

       
        await commentsProvider.loadComments(


     

       
765

       
-

       
          postUri: testPostUri,


     

       
766

       
-

       
          postCid: testPostCid,


     

       
767

       
-

       
          refresh: true,


     

       
768

       
-

       
        );


     

       
769

       
 

       



     

       
770

       
 

       
        expect(commentsProvider.error, isNotNull);


     

       
771

       
 

       



     
···

       
793

       
 

       
      });


     

       
794

       
 

       
    });


     

       
795

       
 

       



     

       
796

       
-

       
    group('Auth state changes', () {


     

       
797

       
-

       
      const testPostUri = 'at://did:plc:test/social.coves.post.record/123';


     

       
798

       
-

       



     

       
799

       
-

       
      test('should clear comments on sign-out', () async {


     

       
800

       
-

       
        final response = CommentsResponse(


     

       
801

       
-

       
          post: {},


     

       
802

       
-

       
          comments: [_createMockThreadComment('comment1')],


     

       
803

       
-

       
        );


     

       
804

       
-

       



     

       
805

       
-

       
        when(


     

       
806

       
-

       
          mockApiService.getComments(


     

       
807

       
-

       
            postUri: anyNamed('postUri'),


     

       
808

       
-

       
            sort: anyNamed('sort'),


     

       
809

       
-

       
            timeframe: anyNamed('timeframe'),


     

       
810

       
-

       
            depth: anyNamed('depth'),


     

       
811

       
-

       
            limit: anyNamed('limit'),


     

       
812

       
-

       
            cursor: anyNamed('cursor'),


     

       
813

       
-

       
          ),


     

       
814

       
-

       
        ).thenAnswer((_) async => response);


     

       
815

       
-

       



     

       
816

       
-

       
        await commentsProvider.loadComments(


     

       
817

       
-

       
          postUri: testPostUri,


     

       
818

       
-

       
          postCid: testPostCid,


     

       
819

       
-

       
          refresh: true,


     

       
820

       
-

       
        );


     

       
821

       
-

       



     

       
822

       
-

       
        expect(commentsProvider.comments.length, 1);


     

       
823

       
-

       



     

       
824

       
-

       
        // Simulate sign-out


     

       
825

       
-

       
        when(mockAuthProvider.isAuthenticated).thenReturn(false);


     

       
826

       
-

       
        // Trigger listener manually since we're using a mock


     

       
827

       
-

       
        commentsProvider.reset();


     

       
828

       
-

       



     

       
829

       
-

       
        expect(commentsProvider.comments.isEmpty, true);


     

       
830

       
-

       
      });


     

       
831

       
-

       
    });


     

       
832

       
 

       



     

       
833

       
 

       
    group('Time updates', () {


     

       
834

       
 

       
      test('should start time updates when comments are loaded', () async {


     
···

       
850

       
 

       



     

       
851

       
 

       
        expect(commentsProvider.currentTimeNotifier.value, null);


     

       
852

       
 

       



     

       
853

       
-

       
        await commentsProvider.loadComments(


     

       
854

       
-

       
          postUri: testPostUri,


     

       
855

       
-

       
          postCid: testPostCid,


     

       
856

       
-

       
          refresh: true,


     

       
857

       
-

       
        );


     

       
858

       
 

       



     

       
859

       
 

       
        expect(commentsProvider.currentTimeNotifier.value, isNotNull);


     

       
860

       
 

       
      });


     
···

       
876

       
 

       
          ),


     

       
877

       
 

       
        ).thenAnswer((_) async => response);


     

       
878

       
 

       



     

       
879

       
-

       
        await commentsProvider.loadComments(


     

       
880

       
-

       
          postUri: testPostUri,


     

       
881

       
-

       
          postCid: testPostCid,


     

       
882

       
-

       
          refresh: true,


     

       
883

       
-

       
        );


     

       
884

       
 

       



     

       
885

       
 

       
        expect(commentsProvider.currentTimeNotifier.value, isNotNull);


     

       
886

       
 

       



     
···

       
915

       
 

       
          ),


     

       
916

       
 

       
        ).thenAnswer((_) async => response);


     

       
917

       
 

       



     

       
918

       
-

       
        await commentsProvider.loadComments(


     

       
919

       
-

       
          postUri: testPostUri,


     

       
920

       
-

       
          postCid: testPostCid,


     

       
921

       
-

       
          refresh: true,


     

       
922

       
-

       
        );


     

       
923

       
 

       



     

       
924

       
 

       
        expect(notificationCount, greaterThan(0));


     

       
925

       
 

       
      });


     
···

       
944

       
 

       
          return response;


     

       
945

       
 

       
        });


     

       
946

       
 

       



     

       
947

       
-

       
        final loadFuture = commentsProvider.loadComments(


     

       
948

       
-

       
          postUri: testPostUri,


     

       
949

       
-

       
          postCid: testPostCid,


     

       
950

       
-

       
          refresh: true,


     

       
951

       
-

       
        );


     

       
952

       
 

       



     

       
953

       
 

       
        // Should be loading


     

       
954

       
 

       
        expect(commentsProvider.isLoading, true);


     
···

       
986

       
 

       
          ),


     

       
987

       
 

       
        ).thenAnswer((_) async => response);


     

       
988

       
 

       



     

       
989

       
-

       
        await commentsProvider.loadComments(


     

       
990

       
-

       
          postUri: testPostUri,


     

       
991

       
-

       
          postCid: testPostCid,


     

       
992

       
-

       
          refresh: true,


     

       
993

       
-

       
        );


     

       
994

       
 

       



     

       
995

       
 

       
        verify(


     

       
996

       
 

       
          mockVoteProvider.setInitialVoteState(


     
···

       
1024

       
 

       
          ),


     

       
1025

       
 

       
        ).thenAnswer((_) async => response);


     

       
1026

       
 

       



     

       
1027

       
-

       
        await commentsProvider.loadComments(


     

       
1028

       
-

       
          postUri: testPostUri,


     

       
1029

       
-

       
          postCid: testPostCid,


     

       
1030

       
-

       
          refresh: true,


     

       
1031

       
-

       
        );


     

       
1032

       
 

       



     

       
1033

       
 

       
        verify(


     

       
1034

       
 

       
          mockVoteProvider.setInitialVoteState(


     
···

       
1064

       
 

       
            ),


     

       
1065

       
 

       
          ).thenAnswer((_) async => response);


     

       
1066

       
 

       



     

       
1067

       
-

       
          await commentsProvider.loadComments(


     

       
1068

       
-

       
            postUri: testPostUri,


     

       
1069

       
-

       
            postCid: testPostCid,


     

       
1070

       
-

       
            refresh: true,


     

       
1071

       
-

       
          );


     

       
1072

       
 

       



     

       
1073

       
 

       
          // Should call setInitialVoteState with null to clear stale state


     

       
1074

       
 

       
          verify(


     
···

       
1114

       
 

       
            ),


     

       
1115

       
 

       
          ).thenAnswer((_) async => response);


     

       
1116

       
 

       



     

       
1117

       
-

       
          await commentsProvider.loadComments(


     

       
1118

       
-

       
            postUri: testPostUri,


     

       
1119

       
-

       
            postCid: testPostCid,


     

       
1120

       
-

       
            refresh: true,


     

       
1121

       
-

       
          );


     

       
1122

       
 

       



     

       
1123

       
 

       
          // Should initialize vote state for both parent and reply


     

       
1124

       
 

       
          verify(


     
···

       
1177

       
 

       
          ),


     

       
1178

       
 

       
        ).thenAnswer((_) async => response);


     

       
1179

       
 

       



     

       
1180

       
-

       
        await commentsProvider.loadComments(


     

       
1181

       
-

       
          postUri: testPostUri,


     

       
1182

       
-

       
          postCid: testPostCid,


     

       
1183

       
-

       
          refresh: true,


     

       
1184

       
-

       
        );


     

       
1185

       
 

       



     

       
1186

       
 

       
        // Should initialize vote state for all 3 levels


     

       
1187

       
 

       
        verify(


     
···

       
1246

       
 

       
          ).thenAnswer((_) async => page2Response);


     

       
1247

       
 

       



     

       
1248

       
 

       
          // Load first page (refresh)


     

       
1249

       
-

       
          await commentsProvider.loadComments(


     

       
1250

       
-

       
            postUri: testPostUri,


     

       
1251

       
-

       
            postCid: testPostCid,


     

       
1252

       
-

       
            refresh: true,


     

       
1253

       
-

       
          );


     

       
1254

       
 

       



     

       
1255

       
 

       
          // Verify comment1 vote initialized


     

       
1256

       
 

       
          verify(


     
···

       
1338

       
 

       
        expect(notificationCount, 2);


     

       
1339

       
 

       
      });


     

       
1340

       
 

       



     

       
1341

       
-

       
      test('should clear collapsed state on reset', () async {


     

       
1342

       
-

       
        // Collapse some comments


     

       
1343

       
-

       
        commentsProvider


     

       
1344

       
-

       
          ..toggleCollapsed('at://did:plc:test/comment/1')


     

       
1345

       
-

       
          ..toggleCollapsed('at://did:plc:test/comment/2');


     

       
1346

       
-

       



     

       
1347

       
-

       
        expect(commentsProvider.collapsedComments.length, 2);


     

       
1348

       
-

       



     

       
1349

       
-

       
        // Reset should clear collapsed state


     

       
1350

       
-

       
        commentsProvider.reset();


     

       
1351

       
-

       



     

       
1352

       
-

       
        expect(commentsProvider.collapsedComments.isEmpty, true);


     

       
1353

       
-

       
        expect(


     

       
1354

       
-

       
          commentsProvider.isCollapsed('at://did:plc:test/comment/1'),


     

       
1355

       
-

       
          false,


     

       
1356

       
-

       
        );


     

       
1357

       
-

       
        expect(


     

       
1358

       
-

       
          commentsProvider.isCollapsed('at://did:plc:test/comment/2'),


     

       
1359

       
-

       
          false,


     

       
1360

       
-

       
        );


     

       
1361

       
-

       
      });


     

       
1362

       
 

       



     

       
1363

       
 

       
      test('collapsedComments getter returns unmodifiable set', () {


     

       
1364

       
 

       
        commentsProvider.toggleCollapsed('at://did:plc:test/comment/1');


     
···

       
1372

       
 

       
        );


     

       
1373

       
 

       
      });


     

       
1374

       
 

       



     

       
1375

       
-

       
      test('should clear collapsed state on post change', () async {


     

       
1376

       
-

       
        // Setup mock response


     

       
1377

       
-

       
        final response = CommentsResponse(


     

       
1378

       
-

       
          post: {},


     

       
1379

       
-

       
          comments: [_createMockThreadComment('comment1')],


     

       
1380

       
-

       
        );


     

       
1381

       
-

       



     

       
1382

       
-

       
        when(


     

       
1383

       
-

       
          mockApiService.getComments(


     

       
1384

       
-

       
            postUri: anyNamed('postUri'),


     

       
1385

       
-

       
            sort: anyNamed('sort'),


     

       
1386

       
-

       
            timeframe: anyNamed('timeframe'),


     

       
1387

       
-

       
            depth: anyNamed('depth'),


     

       
1388

       
-

       
            limit: anyNamed('limit'),


     

       
1389

       
-

       
            cursor: anyNamed('cursor'),


     

       
1390

       
-

       
          ),


     

       
1391

       
-

       
        ).thenAnswer((_) async => response);


     

       
1392

       
-

       



     

       
1393

       
-

       
        // Load first post


     

       
1394

       
-

       
        await commentsProvider.loadComments(


     

       
1395

       
-

       
          postUri: testPostUri,


     

       
1396

       
-

       
          postCid: testPostCid,


     

       
1397

       
-

       
          refresh: true,


     

       
1398

       
-

       
        );


     

       
1399

       
-

       



     

       
1400

       
-

       
        // Collapse a comment


     

       
1401

       
-

       
        commentsProvider.toggleCollapsed('at://did:plc:test/comment/1');


     

       
1402

       
-

       
        expect(commentsProvider.collapsedComments.length, 1);


     

       
1403

       
-

       



     

       
1404

       
-

       
        // Load different post


     

       
1405

       
-

       
        await commentsProvider.loadComments(


     

       
1406

       
-

       
          postUri: 'at://did:plc:test/social.coves.post.record/456',


     

       
1407

       
-

       
          postCid: 'different-cid',


     

       
1408

       
-

       
          refresh: true,


     

       
1409

       
-

       
        );


     

       
1410

       
-

       



     

       
1411

       
-

       
        // Collapsed state should be cleared


     

       
1412

       
-

       
        expect(commentsProvider.collapsedComments.isEmpty, true);


     

       
1413

       
-

       
      });


     

       
1414

       
 

       
    });


     

       
1415

       
 

       



     

       
1416

       
 

       
    group('createComment', () {


     
···

       
1438

       
 

       



     

       
1439

       
 

       
        providerWithCommentService = CommentsProvider(


     

       
1440

       
 

       
          mockAuthProvider,


     

       

       

       
     

       

       

       
     

       
1441

       
 

       
          apiService: mockApiService,


     

       
1442

       
 

       
          voteProvider: mockVoteProvider,


     

       
1443

       
 

       
          commentService: mockCommentService,


     
···

       
1450

       
 

       



     

       
1451

       
 

       
      test('should throw ValidationException for empty content', () async {


     

       
1452

       
 

       
        // First load comments to set up post context


     

       
1453

       
-

       
        await providerWithCommentService.loadComments(


     

       
1454

       
-

       
          postUri: testPostUri,


     

       
1455

       
-

       
          postCid: testPostCid,


     

       
1456

       
-

       
          refresh: true,


     

       
1457

       
-

       
        );


     

       
1458

       
 

       



     

       
1459

       
 

       
        expect(


     

       
1460

       
 

       
          () => providerWithCommentService.createComment(content: ''),


     
···

       
1471

       
 

       
      test(


     

       
1472

       
 

       
        'should throw ValidationException for whitespace-only content',


     

       
1473

       
 

       
        () async {


     

       
1474

       
-

       
          await providerWithCommentService.loadComments(


     

       
1475

       
-

       
            postUri: testPostUri,


     

       
1476

       
-

       
            postCid: testPostCid,


     

       
1477

       
-

       
            refresh: true,


     

       
1478

       
-

       
          );


     

       
1479

       
 

       



     

       
1480

       
 

       
          expect(


     

       
1481

       
 

       
            () =>


     
···

       
1488

       
 

       
      test(


     

       
1489

       
 

       
        'should throw ValidationException for content exceeding limit',


     

       
1490

       
 

       
        () async {


     

       
1491

       
-

       
          await providerWithCommentService.loadComments(


     

       
1492

       
-

       
            postUri: testPostUri,


     

       
1493

       
-

       
            postCid: testPostCid,


     

       
1494

       
-

       
            refresh: true,


     

       
1495

       
-

       
          );


     

       
1496

       
 

       



     

       
1497

       
 

       
          // Create a string longer than 10000 characters


     

       
1498

       
 

       
          final longContent = 'a' * 10001;


     
···

       
1512

       
 

       
      );


     

       
1513

       
 

       



     

       
1514

       
 

       
      test('should count emoji correctly in character limit', () async {


     

       
1515

       
-

       
        await providerWithCommentService.loadComments(


     

       
1516

       
-

       
          postUri: testPostUri,


     

       
1517

       
-

       
          postCid: testPostCid,


     

       
1518

       
-

       
          refresh: true,


     

       
1519

       
-

       
        );


     

       
1520

       
 

       



     

       
1521

       
 

       
        // Each emoji should count as 1 character, not 2-4 bytes


     

       
1522

       
 

       
        // 9999 'a' chars + 1 emoji = 10000 chars (should pass)


     
···

       
1551

       
 

       
        ).called(1);


     

       
1552

       
 

       
      });


     

       
1553

       
 

       



     

       
1554

       
-

       
      test('should throw ApiException when no post loaded', () async {


     

       
1555

       
-

       
        // Don't call loadComments first - no post context


     

       
1556

       
-

       



     

       
1557

       
-

       
        expect(


     

       
1558

       
-

       
          () =>


     

       
1559

       
-

       
              providerWithCommentService.createComment(content: 'Test comment'),


     

       
1560

       
-

       
          throwsA(


     

       
1561

       
-

       
            isA<ApiException>().having(


     

       
1562

       
-

       
              (e) => e.message,


     

       
1563

       
-

       
              'message',


     

       
1564

       
-

       
              contains('No post loaded'),


     

       
1565

       
-

       
            ),


     

       
1566

       
-

       
          ),


     

       
1567

       
-

       
        );


     

       
1568

       
-

       
      });


     

       
1569

       
 

       



     

       
1570

       
 

       
      test('should throw ApiException when no CommentService', () async {


     

       
1571

       
 

       
        // Create provider without CommentService


     

       
1572

       
 

       
        final providerWithoutService = CommentsProvider(


     

       
1573

       
 

       
          mockAuthProvider,


     

       

       

       
     

       

       

       
     

       
1574

       
 

       
          apiService: mockApiService,


     

       
1575

       
 

       
          voteProvider: mockVoteProvider,


     

       
1576

       
 

       
        );


     

       
1577

       
 

       



     

       
1578

       
-

       
        await providerWithoutService.loadComments(


     

       
1579

       
-

       
          postUri: testPostUri,


     

       
1580

       
-

       
          postCid: testPostCid,


     

       
1581

       
-

       
          refresh: true,


     

       
1582

       
-

       
        );


     

       
1583

       
-

       



     

       
1584

       
 

       
        expect(


     

       
1585

       
 

       
          () => providerWithoutService.createComment(content: 'Test comment'),


     

       
1586

       
 

       
          throwsA(


     
···

       
1596

       
 

       
      });


     

       
1597

       
 

       



     

       
1598

       
 

       
      test('should create top-level comment (reply to post)', () async {


     

       
1599

       
-

       
        await providerWithCommentService.loadComments(


     

       
1600

       
-

       
          postUri: testPostUri,


     

       
1601

       
-

       
          postCid: testPostCid,


     

       
1602

       
-

       
          refresh: true,


     

       
1603

       
-

       
        );


     

       
1604

       
 

       



     

       
1605

       
 

       
        when(


     

       
1606

       
 

       
          mockCommentService.createComment(


     
···

       
1635

       
 

       
      });


     

       
1636

       
 

       



     

       
1637

       
 

       
      test('should create nested comment (reply to comment)', () async {


     

       
1638

       
-

       
        await providerWithCommentService.loadComments(


     

       
1639

       
-

       
          postUri: testPostUri,


     

       
1640

       
-

       
          postCid: testPostCid,


     

       
1641

       
-

       
          refresh: true,


     

       
1642

       
-

       
        );


     

       
1643

       
 

       



     

       
1644

       
 

       
        when(


     

       
1645

       
 

       
          mockCommentService.createComment(


     
···

       
1677

       
 

       
      });


     

       
1678

       
 

       



     

       
1679

       
 

       
      test('should trim content before sending', () async {


     

       
1680

       
-

       
        await providerWithCommentService.loadComments(


     

       
1681

       
-

       
          postUri: testPostUri,


     

       
1682

       
-

       
          postCid: testPostCid,


     

       
1683

       
-

       
          refresh: true,


     

       
1684

       
-

       
        );


     

       
1685

       
 

       



     

       
1686

       
 

       
        when(


     

       
1687

       
 

       
          mockCommentService.createComment(


     
···

       
1715

       
 

       
      });


     

       
1716

       
 

       



     

       
1717

       
 

       
      test('should refresh comments after successful creation', () async {


     

       
1718

       
-

       
        await providerWithCommentService.loadComments(


     

       
1719

       
-

       
          postUri: testPostUri,


     

       
1720

       
-

       
          postCid: testPostCid,


     

       
1721

       
-

       
          refresh: true,


     

       
1722

       
-

       
        );


     

       
1723

       
 

       



     

       
1724

       
 

       
        when(


     

       
1725

       
 

       
          mockCommentService.createComment(


     
···

       
1753

       
 

       
      });


     

       
1754

       
 

       



     

       
1755

       
 

       
      test('should rethrow exception from CommentService', () async {


     

       
1756

       
-

       
        await providerWithCommentService.loadComments(


     

       
1757

       
-

       
          postUri: testPostUri,


     

       
1758

       
-

       
          postCid: testPostCid,


     

       
1759

       
-

       
          refresh: true,


     

       
1760

       
-

       
        );


     

       
1761

       
 

       



     

       
1762

       
 

       
        when(


     

       
1763

       
 

       
          mockCommentService.createComment(


     
···

       
1783

       
 

       
      });


     

       
1784

       
 

       



     

       
1785

       
 

       
      test('should accept content at exactly max length', () async {


     

       
1786

       
-

       
        await providerWithCommentService.loadComments(


     

       
1787

       
-

       
          postUri: testPostUri,


     

       
1788

       
-

       
          postCid: testPostCid,


     

       
1789

       
-

       
          refresh: true,


     

       
1790

       
-

       
        );


     

       
1791

       
 

       



     

       
1792

       
 

       
        final contentAtLimit = 'a' * CommentsProvider.maxCommentLength;


     

       
1793

       
 

       



     
···

       
39

       
 

       



     

       
40

       
 

       
      commentsProvider = CommentsProvider(


     

       
41

       
 

       
        mockAuthProvider,


     

       
42

       
+

       
        postUri: testPostUri,


     

       
43

       
+

       
        postCid: testPostCid,


     

       
44

       
 

       
        apiService: mockApiService,


     

       
45

       
 

       
        voteProvider: mockVoteProvider,


     

       
46

       
 

       
      );


     
···

       
74

       
 

       
          ),


     

       
75

       
 

       
        ).thenAnswer((_) async => mockResponse);


     

       
76

       
 

       



     

       
77

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
78

       
 

       



     

       
79

       
 

       
        expect(commentsProvider.comments.length, 2);


     

       
80

       
 

       
        expect(commentsProvider.hasMore, true);


     
···

       
96

       
 

       
          ),


     

       
97

       
 

       
        ).thenAnswer((_) async => mockResponse);


     

       
98

       
 

       



     

       
99

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
100

       
 

       



     

       
101

       
 

       
        expect(commentsProvider.comments.isEmpty, true);


     

       
102

       
 

       
        expect(commentsProvider.hasMore, false);


     
···

       
115

       
 

       
          ),


     

       
116

       
 

       
        ).thenThrow(Exception('Network error'));


     

       
117

       
 

       



     

       
118

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
119

       
 

       



     

       
120

       
 

       
        expect(commentsProvider.error, isNotNull);


     

       
121

       
 

       
        expect(commentsProvider.error, contains('Network error'));


     
···

       
135

       
 

       
          ),


     

       
136

       
 

       
        ).thenThrow(Exception('TimeoutException: Request timed out'));


     

       
137

       
 

       



     

       
138

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
139

       
 

       



     

       
140

       
 

       
        expect(commentsProvider.error, isNotNull);


     

       
141

       
 

       
        expect(commentsProvider.isLoading, false);


     
···

       
160

       
 

       
          ),


     

       
161

       
 

       
        ).thenAnswer((_) async => firstResponse);


     

       
162

       
 

       



     

       
163

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
164

       
 

       



     

       
165

       
 

       
        expect(commentsProvider.comments.length, 1);


     

       
166

       
 

       



     
···

       
182

       
 

       
          ),


     

       
183

       
 

       
        ).thenAnswer((_) async => secondResponse);


     

       
184

       
 

       



     

       
185

       
+

       
        await commentsProvider.loadComments();


     

       

       

       
     

       

       

       
     

       

       

       
     

       
186

       
 

       



     

       
187

       
 

       
        expect(commentsProvider.comments.length, 2);


     

       
188

       
 

       
        expect(commentsProvider.comments[0].comment.uri, 'comment1');


     
···

       
208

       
 

       
          ),


     

       
209

       
 

       
        ).thenAnswer((_) async => firstResponse);


     

       
210

       
 

       



     

       
211

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
212

       
 

       



     

       
213

       
 

       
        expect(commentsProvider.comments.length, 1);


     

       
214

       
 

       



     
···

       
232

       
 

       
          ),


     

       
233

       
 

       
        ).thenAnswer((_) async => refreshResponse);


     

       
234

       
 

       



     

       
235

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
236

       
 

       



     

       
237

       
 

       
        expect(commentsProvider.comments.length, 2);


     

       
238

       
 

       
        expect(commentsProvider.comments[0].comment.uri, 'comment2');


     
···

       
256

       
 

       
          ),


     

       
257

       
 

       
        ).thenAnswer((_) async => response);


     

       
258

       
 

       



     

       
259

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
260

       
 

       



     

       
261

       
 

       
        expect(commentsProvider.hasMore, false);


     

       
262

       
 

       
      });


     

       
263

       
 

       



     

       
264

       
+

       
      // Note: "reset state when loading different post" test removed


     

       
265

       
+

       
      // Providers are now immutable per post - use CommentsProviderCache


     

       
266

       
+

       
      // to get separate providers for different posts


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
267

       
 

       



     

       
268

       
 

       
      test('should not load when already loading', () async {


     

       
269

       
 

       
        final response = CommentsResponse(


     
···

       
287

       
 

       
        });


     

       
288

       
 

       



     

       
289

       
 

       
        // Start first load


     

       
290

       
+

       
        final firstFuture = commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
291

       
 

       



     

       
292

       
 

       
        // Try to load again while still loading - should schedule a refresh


     

       
293

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
294

       
 

       



     

       
295

       
 

       
        await firstFuture;


     

       
296

       
 

       
        // Wait a bit for the pending refresh to execute


     
···

       
330

       
 

       
            ),


     

       
331

       
 

       
          ).thenAnswer((_) async => mockResponse);


     

       
332

       
 

       



     

       
333

       
+

       
          await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
334

       
 

       



     

       
335

       
 

       
          expect(commentsProvider.comments.length, 1);


     

       
336

       
 

       
          expect(commentsProvider.error, null);


     
···

       
356

       
 

       
          ),


     

       
357

       
 

       
        ).thenAnswer((_) async => mockResponse);


     

       
358

       
 

       



     

       
359

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
360

       
 

       



     

       
361

       
 

       
        expect(commentsProvider.comments.length, 1);


     

       
362

       
 

       
        expect(commentsProvider.error, null);


     
···

       
383

       
 

       
          ),


     

       
384

       
 

       
        ).thenAnswer((_) async => initialResponse);


     

       
385

       
 

       



     

       
386

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
387

       
 

       



     

       
388

       
 

       
        expect(commentsProvider.sort, 'hot');


     

       
389

       
 

       



     
···

       
437

       
 

       
          ),


     

       
438

       
 

       
        ).thenAnswer((_) async => response);


     

       
439

       
 

       



     

       
440

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
441

       
 

       



     

       
442

       
 

       
        // Try to set same sort option


     

       
443

       
 

       
        await commentsProvider.setSortOption('hot');


     
···

       
476

       
 

       
          ),


     

       
477

       
 

       
        ).thenAnswer((_) async => initialResponse);


     

       
478

       
 

       



     

       
479

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
480

       
 

       



     

       
481

       
 

       
        expect(commentsProvider.comments.length, 1);


     

       
482

       
 

       



     
···

       
504

       
 

       
        expect(commentsProvider.comments.length, 2);


     

       
505

       
 

       
      });


     

       
506

       
 

       



     

       
507

       
+

       
      // Note: "should not refresh if no post loaded" test removed


     

       
508

       
+

       
      // Providers now always have a post URI at construction time


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
509

       
 

       
    });


     

       
510

       
 

       



     

       
511

       
 

       
    group('loadMoreComments', () {


     
···

       
530

       
 

       
          ),


     

       
531

       
 

       
        ).thenAnswer((_) async => initialResponse);


     

       
532

       
 

       



     

       
533

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
534

       
 

       



     

       
535

       
 

       
        expect(commentsProvider.hasMore, true);


     

       
536

       
 

       



     
···

       
574

       
 

       
          ),


     

       
575

       
 

       
        ).thenAnswer((_) async => response);


     

       
576

       
 

       



     

       
577

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
578

       
 

       



     

       
579

       
 

       
        expect(commentsProvider.hasMore, false);


     

       
580

       
 

       



     
···

       
594

       
 

       
        ).called(1);


     

       
595

       
 

       
      });


     

       
596

       
 

       



     

       
597

       
+

       
      // Note: "should not load more if no post loaded" test removed


     

       
598

       
+

       
      // Providers now always have a post URI at construction time


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
599

       
 

       
    });


     

       
600

       
 

       



     

       
601

       
 

       
    group('retry', () {


     
···

       
614

       
 

       
          ),


     

       
615

       
 

       
        ).thenThrow(Exception('Network error'));


     

       
616

       
 

       



     

       
617

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
618

       
 

       



     

       
619

       
 

       
        expect(commentsProvider.error, isNotNull);


     

       
620

       
 

       



     
···

       
642

       
 

       
      });


     

       
643

       
 

       
    });


     

       
644

       
 

       



     

       
645

       
+

       
    // Note: "Auth state changes" group removed


     

       
646

       
+

       
    // Sign-out cleanup is now handled by CommentsProviderCache which disposes


     

       
647

       
+

       
    // all cached providers when the user signs out. Individual providers no


     

       
648

       
+

       
    // longer have a reset() method.


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
649

       
 

       



     

       
650

       
 

       
    group('Time updates', () {


     

       
651

       
 

       
      test('should start time updates when comments are loaded', () async {


     
···

       
667

       
 

       



     

       
668

       
 

       
        expect(commentsProvider.currentTimeNotifier.value, null);


     

       
669

       
 

       



     

       
670

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
671

       
 

       



     

       
672

       
 

       
        expect(commentsProvider.currentTimeNotifier.value, isNotNull);


     

       
673

       
 

       
      });


     
···

       
689

       
 

       
          ),


     

       
690

       
 

       
        ).thenAnswer((_) async => response);


     

       
691

       
 

       



     

       
692

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
693

       
 

       



     

       
694

       
 

       
        expect(commentsProvider.currentTimeNotifier.value, isNotNull);


     

       
695

       
 

       



     
···

       
724

       
 

       
          ),


     

       
725

       
 

       
        ).thenAnswer((_) async => response);


     

       
726

       
 

       



     

       
727

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
728

       
 

       



     

       
729

       
 

       
        expect(notificationCount, greaterThan(0));


     

       
730

       
 

       
      });


     
···

       
749

       
 

       
          return response;


     

       
750

       
 

       
        });


     

       
751

       
 

       



     

       
752

       
+

       
        final loadFuture = commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
753

       
 

       



     

       
754

       
 

       
        // Should be loading


     

       
755

       
 

       
        expect(commentsProvider.isLoading, true);


     
···

       
787

       
 

       
          ),


     

       
788

       
 

       
        ).thenAnswer((_) async => response);


     

       
789

       
 

       



     

       
790

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
791

       
 

       



     

       
792

       
 

       
        verify(


     

       
793

       
 

       
          mockVoteProvider.setInitialVoteState(


     
···

       
821

       
 

       
          ),


     

       
822

       
 

       
        ).thenAnswer((_) async => response);


     

       
823

       
 

       



     

       
824

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
825

       
 

       



     

       
826

       
 

       
        verify(


     

       
827

       
 

       
          mockVoteProvider.setInitialVoteState(


     
···

       
857

       
 

       
            ),


     

       
858

       
 

       
          ).thenAnswer((_) async => response);


     

       
859

       
 

       



     

       
860

       
+

       
          await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
861

       
 

       



     

       
862

       
 

       
          // Should call setInitialVoteState with null to clear stale state


     

       
863

       
 

       
          verify(


     
···

       
903

       
 

       
            ),


     

       
904

       
 

       
          ).thenAnswer((_) async => response);


     

       
905

       
 

       



     

       
906

       
+

       
          await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
907

       
 

       



     

       
908

       
 

       
          // Should initialize vote state for both parent and reply


     

       
909

       
 

       
          verify(


     
···

       
962

       
 

       
          ),


     

       
963

       
 

       
        ).thenAnswer((_) async => response);


     

       
964

       
 

       



     

       
965

       
+

       
        await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
966

       
 

       



     

       
967

       
 

       
        // Should initialize vote state for all 3 levels


     

       
968

       
 

       
        verify(


     
···

       
1027

       
 

       
          ).thenAnswer((_) async => page2Response);


     

       
1028

       
 

       



     

       
1029

       
 

       
          // Load first page (refresh)


     

       
1030

       
+

       
          await commentsProvider.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
1031

       
 

       



     

       
1032

       
 

       
          // Verify comment1 vote initialized


     

       
1033

       
 

       
          verify(


     
···

       
1115

       
 

       
        expect(notificationCount, 2);


     

       
1116

       
 

       
      });


     

       
1117

       
 

       



     

       
1118

       
+

       
      // Note: "clear collapsed state on reset" test removed


     

       
1119

       
+

       
      // Providers no longer have a reset() method - they are disposed entirely


     

       
1120

       
+

       
      // when evicted from cache or on sign-out


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
1121

       
 

       



     

       
1122

       
 

       
      test('collapsedComments getter returns unmodifiable set', () {


     

       
1123

       
 

       
        commentsProvider.toggleCollapsed('at://did:plc:test/comment/1');


     
···

       
1131

       
 

       
        );


     

       
1132

       
 

       
      });


     

       
1133

       
 

       



     

       
1134

       
+

       
      // Note: "clear collapsed state on post change" test removed


     

       
1135

       
+

       
      // Providers are now immutable per post - each post gets its own provider


     

       
1136

       
+

       
      // with its own collapsed state. Use CommentsProviderCache to get different


     

       
1137

       
+

       
      // providers for different posts.


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
1138

       
 

       
    });


     

       
1139

       
 

       



     

       
1140

       
 

       
    group('createComment', () {


     
···

       
1162

       
 

       



     

       
1163

       
 

       
        providerWithCommentService = CommentsProvider(


     

       
1164

       
 

       
          mockAuthProvider,


     

       
1165

       
+

       
          postUri: testPostUri,


     

       
1166

       
+

       
          postCid: testPostCid,


     

       
1167

       
 

       
          apiService: mockApiService,


     

       
1168

       
 

       
          voteProvider: mockVoteProvider,


     

       
1169

       
 

       
          commentService: mockCommentService,


     
···

       
1176

       
 

       



     

       
1177

       
 

       
      test('should throw ValidationException for empty content', () async {


     

       
1178

       
 

       
        // First load comments to set up post context


     

       
1179

       
+

       
        await providerWithCommentService.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
1180

       
 

       



     

       
1181

       
 

       
        expect(


     

       
1182

       
 

       
          () => providerWithCommentService.createComment(content: ''),


     
···

       
1193

       
 

       
      test(


     

       
1194

       
 

       
        'should throw ValidationException for whitespace-only content',


     

       
1195

       
 

       
        () async {


     

       
1196

       
+

       
          await providerWithCommentService.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
1197

       
 

       



     

       
1198

       
 

       
          expect(


     

       
1199

       
 

       
            () =>


     
···

       
1206

       
 

       
      test(


     

       
1207

       
 

       
        'should throw ValidationException for content exceeding limit',


     

       
1208

       
 

       
        () async {


     

       
1209

       
+

       
          await providerWithCommentService.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
1210

       
 

       



     

       
1211

       
 

       
          // Create a string longer than 10000 characters


     

       
1212

       
 

       
          final longContent = 'a' * 10001;


     
···

       
1226

       
 

       
      );


     

       
1227

       
 

       



     

       
1228

       
 

       
      test('should count emoji correctly in character limit', () async {


     

       
1229

       
+

       
        await providerWithCommentService.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
1230

       
 

       



     

       
1231

       
 

       
        // Each emoji should count as 1 character, not 2-4 bytes


     

       
1232

       
 

       
        // 9999 'a' chars + 1 emoji = 10000 chars (should pass)


     
···

       
1261

       
 

       
        ).called(1);


     

       
1262

       
 

       
      });


     

       
1263

       
 

       



     

       
1264

       
+

       
      // Note: "should throw ApiException when no post loaded" test removed


     

       
1265

       
+

       
      // Post context is now always provided via constructor - this case can't occur


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
1266

       
 

       



     

       
1267

       
 

       
      test('should throw ApiException when no CommentService', () async {


     

       
1268

       
 

       
        // Create provider without CommentService


     

       
1269

       
 

       
        final providerWithoutService = CommentsProvider(


     

       
1270

       
 

       
          mockAuthProvider,


     

       
1271

       
+

       
          postUri: testPostUri,


     

       
1272

       
+

       
          postCid: testPostCid,


     

       
1273

       
 

       
          apiService: mockApiService,


     

       
1274

       
 

       
          voteProvider: mockVoteProvider,


     

       
1275

       
 

       
        );


     

       
1276

       
 

       



     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
1277

       
 

       
        expect(


     

       
1278

       
 

       
          () => providerWithoutService.createComment(content: 'Test comment'),


     

       
1279

       
 

       
          throwsA(


     
···

       
1289

       
 

       
      });


     

       
1290

       
 

       



     

       
1291

       
 

       
      test('should create top-level comment (reply to post)', () async {


     

       
1292

       
+

       
        await providerWithCommentService.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
1293

       
 

       



     

       
1294

       
 

       
        when(


     

       
1295

       
 

       
          mockCommentService.createComment(


     
···

       
1324

       
 

       
      });


     

       
1325

       
 

       



     

       
1326

       
 

       
      test('should create nested comment (reply to comment)', () async {


     

       
1327

       
+

       
        await providerWithCommentService.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
1328

       
 

       



     

       
1329

       
 

       
        when(


     

       
1330

       
 

       
          mockCommentService.createComment(


     
···

       
1362

       
 

       
      });


     

       
1363

       
 

       



     

       
1364

       
 

       
      test('should trim content before sending', () async {


     

       
1365

       
+

       
        await providerWithCommentService.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
1366

       
 

       



     

       
1367

       
 

       
        when(


     

       
1368

       
 

       
          mockCommentService.createComment(


     
···

       
1396

       
 

       
      });


     

       
1397

       
 

       



     

       
1398

       
 

       
      test('should refresh comments after successful creation', () async {


     

       
1399

       
+

       
        await providerWithCommentService.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
1400

       
 

       



     

       
1401

       
 

       
        when(


     

       
1402

       
 

       
          mockCommentService.createComment(


     
···

       
1430

       
 

       
      });


     

       
1431

       
 

       



     

       
1432

       
 

       
      test('should rethrow exception from CommentService', () async {


     

       
1433

       
+

       
        await providerWithCommentService.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
1434

       
 

       



     

       
1435

       
 

       
        when(


     

       
1436

       
 

       
          mockCommentService.createComment(


     
···

       
1456

       
 

       
      });


     

       
1457

       
 

       



     

       
1458

       
 

       
      test('should accept content at exactly max length', () async {


     

       
1459

       
+

       
        await providerWithCommentService.loadComments(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
1460

       
 

       



     

       
1461

       
 

       
        final contentAtLimit = 'a' * CommentsProvider.maxCommentLength;


     

       
1462
+30 -5
test/providers/feed_provider_test.dart 
···

       
38

       
 

       
    });


     

       
39

       
 

       



     

       
40

       
 

       
    group('loadFeed', () {


     

       
41

       
-

       
      test('should load timeline when authenticated', () async {


     

       
42

       
 

       
        when(mockAuthProvider.isAuthenticated).thenReturn(true);


     

       
43

       
 

       



     

       
44

       
 

       
        final mockResponse = TimelineResponse(


     
···

       
47

       
 

       
        );


     

       
48

       
 

       



     

       
49

       
 

       
        when(


     

       
50

       
-

       
          mockApiService.getTimeline(


     

       
51

       
 

       
            sort: anyNamed('sort'),


     

       
52

       
 

       
            timeframe: anyNamed('timeframe'),


     

       
53

       
 

       
            limit: anyNamed('limit'),


     
···

       
56

       
 

       
        ).thenAnswer((_) async => mockResponse);


     

       
57

       
 

       



     

       
58

       
 

       
        await feedProvider.loadFeed(refresh: true);


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
59

       
 

       



     

       
60

       
 

       
        expect(feedProvider.posts.length, 1);


     

       
61

       
 

       
        expect(feedProvider.error, null);


     
···

       
274

       
 

       
            sort: anyNamed('sort'),


     

       
275

       
 

       
            timeframe: anyNamed('timeframe'),


     

       
276

       
 

       
            limit: anyNamed('limit'),


     

       

       

       
     

       
277

       
 

       
          ),


     

       
278

       
 

       
        ).thenAnswer((_) async => firstResponse);


     

       
279

       
 

       



     

       
280

       
-

       
        await feedProvider.loadFeed(refresh: true);


     

       
281

       
 

       



     

       
282

       
 

       
        // Load more


     

       
283

       
 

       
        final secondResponse = TimelineResponse(


     
···

       
316

       
 

       
          ),


     

       
317

       
 

       
        ).thenAnswer((_) async => response);


     

       
318

       
 

       



     

       
319

       
-

       
        await feedProvider.fetchTimeline(refresh: true);


     

       
320

       
 

       
        await feedProvider.loadMore();


     

       
321

       
 

       



     

       
322

       
 

       
        // Should not make additional calls while loading


     
···

       
356

       
 

       
          ),


     

       
357

       
 

       
        ).thenThrow(Exception('Network error'));


     

       
358

       
 

       



     

       
359

       
-

       
        await feedProvider.loadFeed(refresh: true);


     

       
360

       
 

       
        expect(feedProvider.error, isNotNull);


     

       
361

       
 

       



     

       
362

       
 

       
        // Retry


     
···

       
38

       
 

       
    });


     

       
39

       
 

       



     

       
40

       
 

       
    group('loadFeed', () {


     

       
41

       
+

       
      test('should load discover feed when authenticated by default', () async {


     

       
42

       
 

       
        when(mockAuthProvider.isAuthenticated).thenReturn(true);


     

       
43

       
 

       



     

       
44

       
 

       
        final mockResponse = TimelineResponse(


     
···

       
47

       
 

       
        );


     

       
48

       
 

       



     

       
49

       
 

       
        when(


     

       
50

       
+

       
          mockApiService.getDiscover(


     

       
51

       
 

       
            sort: anyNamed('sort'),


     

       
52

       
 

       
            timeframe: anyNamed('timeframe'),


     

       
53

       
 

       
            limit: anyNamed('limit'),


     
···

       
56

       
 

       
        ).thenAnswer((_) async => mockResponse);


     

       
57

       
 

       



     

       
58

       
 

       
        await feedProvider.loadFeed(refresh: true);


     

       
59

       
+

       



     

       
60

       
+

       
        expect(feedProvider.posts.length, 1);


     

       
61

       
+

       
        expect(feedProvider.error, null);


     

       
62

       
+

       
        expect(feedProvider.isLoading, false);


     

       
63

       
+

       
      });


     

       
64

       
+

       



     

       
65

       
+

       
      test('should load timeline when feed type is For You', () async {


     

       
66

       
+

       
        when(mockAuthProvider.isAuthenticated).thenReturn(true);


     

       
67

       
+

       



     

       
68

       
+

       
        final mockResponse = TimelineResponse(


     

       
69

       
+

       
          feed: [_createMockPost()],


     

       
70

       
+

       
          cursor: 'next-cursor',


     

       
71

       
+

       
        );


     

       
72

       
+

       



     

       
73

       
+

       
        when(


     

       
74

       
+

       
          mockApiService.getTimeline(


     

       
75

       
+

       
            sort: anyNamed('sort'),


     

       
76

       
+

       
            timeframe: anyNamed('timeframe'),


     

       
77

       
+

       
            limit: anyNamed('limit'),


     

       
78

       
+

       
            cursor: anyNamed('cursor'),


     

       
79

       
+

       
          ),


     

       
80

       
+

       
        ).thenAnswer((_) async => mockResponse);


     

       
81

       
+

       



     

       
82

       
+

       
        await feedProvider.setFeedType(FeedType.forYou);


     

       
83

       
 

       



     

       
84

       
 

       
        expect(feedProvider.posts.length, 1);


     

       
85

       
 

       
        expect(feedProvider.error, null);


     
···

       
298

       
 

       
            sort: anyNamed('sort'),


     

       
299

       
 

       
            timeframe: anyNamed('timeframe'),


     

       
300

       
 

       
            limit: anyNamed('limit'),


     

       
301

       
+

       
            cursor: anyNamed('cursor'),


     

       
302

       
 

       
          ),


     

       
303

       
 

       
        ).thenAnswer((_) async => firstResponse);


     

       
304

       
 

       



     

       
305

       
+

       
        await feedProvider.setFeedType(FeedType.forYou);


     

       
306

       
 

       



     

       
307

       
 

       
        // Load more


     

       
308

       
 

       
        final secondResponse = TimelineResponse(


     
···

       
341

       
 

       
          ),


     

       
342

       
 

       
        ).thenAnswer((_) async => response);


     

       
343

       
 

       



     

       
344

       
+

       
        await feedProvider.setFeedType(FeedType.forYou);


     

       
345

       
 

       
        await feedProvider.loadMore();


     

       
346

       
 

       



     

       
347

       
 

       
        // Should not make additional calls while loading


     
···

       
381

       
 

       
          ),


     

       
382

       
 

       
        ).thenThrow(Exception('Network error'));


     

       
383

       
 

       



     

       
384

       
+

       
        await feedProvider.setFeedType(FeedType.forYou);


     

       
385

       
 

       
        expect(feedProvider.error, isNotNull);


     

       
386

       
 

       



     

       
387

       
 

       
        // Retry
+19
test/test_helpers/mock_providers.dart 
···

       
2

       
 

       
import 'package:coves_flutter/providers/vote_provider.dart';


     

       
3

       
 

       
import 'package:flutter/foundation.dart';


     

       
4

       
 

       



     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
5

       
 

       
/// Mock AuthProvider for testing


     

       
6

       
 

       
class MockAuthProvider extends ChangeNotifier {


     

       
7

       
 

       
  bool _isAuthenticated = false;


     
···

       
2

       
 

       
import 'package:coves_flutter/providers/vote_provider.dart';


     

       
3

       
 

       
import 'package:flutter/foundation.dart';


     

       
4

       
 

       



     

       
5

       
+

       
/// Mock CommentsProvider for testing


     

       
6

       
+

       
class MockCommentsProvider extends ChangeNotifier {


     

       
7

       
+

       
  final String postUri;


     

       
8

       
+

       
  final String postCid;


     

       
9

       
+

       



     

       
10

       
+

       
  MockCommentsProvider({


     

       
11

       
+

       
    required this.postUri,


     

       
12

       
+

       
    required this.postCid,


     

       
13

       
+

       
  });


     

       
14

       
+

       



     

       
15

       
+

       
  final ValueNotifier<DateTime?> currentTimeNotifier = ValueNotifier(null);


     

       
16

       
+

       



     

       
17

       
+

       
  @override


     

       
18

       
+

       
  void dispose() {


     

       
19

       
+

       
    currentTimeNotifier.dispose();


     

       
20

       
+

       
    super.dispose();


     

       
21

       
+

       
  }


     

       
22

       
+

       
}


     

       
23

       
+

       



     

       
24

       
 

       
/// Mock AuthProvider for testing


     

       
25

       
 

       
class MockAuthProvider extends ChangeNotifier {


     

       
26

       
 

       
  bool _isAuthenticated = false;
+6 -4
test/widgets/feed_screen_test.dart 
···

       
215

       
 

       
      expect(find.text('Test Post 2'), findsOneWidget);


     

       
216

       
 

       
    });


     

       
217

       
 

       



     

       
218

       
-

       
    testWidgets('should display "Feed" title when authenticated', (


     

       
219

       
 

       
      tester,


     

       
220

       
 

       
    ) async {


     

       
221

       
 

       
      fakeAuthProvider.setAuthenticated(value: true);


     

       
222

       
 

       



     

       
223

       
 

       
      await tester.pumpWidget(createTestWidget());


     

       
224

       
 

       



     

       
225

       
-

       
      expect(find.text('Feed'), findsOneWidget);


     

       

       

       
     

       
226

       
 

       
    });


     

       
227

       
 

       



     

       
228

       
-

       
    testWidgets('should display "Explore" title when not authenticated', (


     

       
229

       
 

       
      tester,


     

       
230

       
 

       
    ) async {


     

       
231

       
 

       
      fakeAuthProvider.setAuthenticated(value: false);


     

       
232

       
 

       



     

       
233

       
 

       
      await tester.pumpWidget(createTestWidget());


     

       
234

       
 

       



     

       
235

       
-

       
      expect(find.text('Explore'), findsOneWidget);


     

       

       

       
     

       
236

       
 

       
    });


     

       
237

       
 

       



     

       
238

       
 

       
    testWidgets('should handle pull-to-refresh', (tester) async {


     
···

       
215

       
 

       
      expect(find.text('Test Post 2'), findsOneWidget);


     

       
216

       
 

       
    });


     

       
217

       
 

       



     

       
218

       
+

       
    testWidgets('should display feed type tabs when authenticated', (


     

       
219

       
 

       
      tester,


     

       
220

       
 

       
    ) async {


     

       
221

       
 

       
      fakeAuthProvider.setAuthenticated(value: true);


     

       
222

       
 

       



     

       
223

       
 

       
      await tester.pumpWidget(createTestWidget());


     

       
224

       
 

       



     

       
225

       
+

       
      expect(find.text('Discover'), findsOneWidget);


     

       
226

       
+

       
      expect(find.text('For You'), findsOneWidget);


     

       
227

       
 

       
    });


     

       
228

       
 

       



     

       
229

       
+

       
    testWidgets('should display only Discover tab when not authenticated', (


     

       
230

       
 

       
      tester,


     

       
231

       
 

       
    ) async {


     

       
232

       
 

       
      fakeAuthProvider.setAuthenticated(value: false);


     

       
233

       
 

       



     

       
234

       
 

       
      await tester.pumpWidget(createTestWidget());


     

       
235

       
 

       



     

       
236

       
+

       
      expect(find.text('Discover'), findsOneWidget);


     

       
237

       
+

       
      expect(find.text('For You'), findsNothing);


     

       
238

       
 

       
    });


     

       
239

       
 

       



     

       
240

       
 

       
    testWidgets('should handle pull-to-refresh', (tester) async {
+12
test/widgets/focused_thread_screen_test.dart 
···

       
1

       
 

       
import 'package:coves_flutter/models/comment.dart';


     

       
2

       
 

       
import 'package:coves_flutter/models/post.dart';


     

       

       

       
     

       
3

       
 

       
import 'package:coves_flutter/screens/home/focused_thread_screen.dart';


     

       
4

       
 

       
import 'package:flutter/material.dart';


     

       
5

       
 

       
import 'package:flutter_test/flutter_test.dart';


     
···

       
10

       
 

       
void main() {


     

       
11

       
 

       
  late MockAuthProvider mockAuthProvider;


     

       
12

       
 

       
  late MockVoteProvider mockVoteProvider;


     

       

       

       
     

       
13

       
 

       



     

       
14

       
 

       
  setUp(() {


     

       
15

       
 

       
    mockAuthProvider = MockAuthProvider();


     

       
16

       
 

       
    mockVoteProvider = MockVoteProvider();


     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       

       

       
     

       
17

       
 

       
  });


     

       
18

       
 

       



     

       
19

       
 

       
  /// Helper to create a test comment


     
···

       
61

       
 

       
          thread: thread,


     

       
62

       
 

       
          ancestors: ancestors,


     

       
63

       
 

       
          onReply: onReply ?? (content, parent) async {},


     

       

       

       
     

       

       

       
     

       
64

       
 

       
        ),


     

       
65

       
 

       
      ),


     

       
66

       
 

       
    );


     
···

       
1

       
 

       
import 'package:coves_flutter/models/comment.dart';


     

       
2

       
 

       
import 'package:coves_flutter/models/post.dart';


     

       
3

       
+

       
import 'package:coves_flutter/providers/comments_provider.dart';


     

       
4

       
 

       
import 'package:coves_flutter/screens/home/focused_thread_screen.dart';


     

       
5

       
 

       
import 'package:flutter/material.dart';


     

       
6

       
 

       
import 'package:flutter_test/flutter_test.dart';


     
···

       
11

       
 

       
void main() {


     

       
12

       
 

       
  late MockAuthProvider mockAuthProvider;


     

       
13

       
 

       
  late MockVoteProvider mockVoteProvider;


     

       
14

       
+

       
  late MockCommentsProvider mockCommentsProvider;


     

       
15

       
 

       



     

       
16

       
 

       
  setUp(() {


     

       
17

       
 

       
    mockAuthProvider = MockAuthProvider();


     

       
18

       
 

       
    mockVoteProvider = MockVoteProvider();


     

       
19

       
+

       
    mockCommentsProvider = MockCommentsProvider(


     

       
20

       
+

       
      postUri: 'at://did:plc:test/post/123',


     

       
21

       
+

       
      postCid: 'post-cid',


     

       
22

       
+

       
    );


     

       
23

       
+

       
  });


     

       
24

       
+

       



     

       
25

       
+

       
  tearDown(() {


     

       
26

       
+

       
    mockCommentsProvider.dispose();


     

       
27

       
 

       
  });


     

       
28

       
 

       



     

       
29

       
 

       
  /// Helper to create a test comment


     
···

       
71

       
 

       
          thread: thread,


     

       
72

       
 

       
          ancestors: ancestors,


     

       
73

       
 

       
          onReply: onReply ?? (content, parent) async {},


     

       
74

       
+

       
          // Note: Using mock cast - tests are skipped so this won't actually run


     

       
75

       
+

       
          commentsProvider: mockCommentsProvider as CommentsProvider,


     

       
76

       
 

       
        ),


     

       
77

       
 

       
      ),


     

       
78

       
 

       
    );