commit 0486372195e201e1befa4871bbe88787ed43294a · bretton.dev/coves-mobile

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lib/widgets/external_link_bar.dart
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       import 'package:cached_network_image/cached_network_image.dart';

     

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       import 'package:flutter/material.dart';

     

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

     

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

     

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       import '../utils/url_launcher.dart';

     

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       /// External link bar widget for displaying clickable links

     

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       ///

     

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       /// Shows the domain favicon, domain name, and an external link icon.

     

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       /// Taps launch the URL in an external browser with security validation.

     

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       class ExternalLinkBar extends StatelessWidget {

     

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         const ExternalLinkBar({required this.embed, super.key});

     

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         final ExternalEmbed embed;

     

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         @override

     

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         Widget build(BuildContext context) {

     

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           final domain = _extractDomain();

     

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           return Semantics(

     

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             button: true,

     

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             label: 'Open link to $domain in external browser',

     

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             child: InkWell(

     

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               onTap: () async {

     

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                 await UrlLauncher.launchExternalUrl(embed.uri, context: context);

     

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               },

     

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               child: Container(

     

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                 padding: const EdgeInsets.all(10),

     

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                 decoration: BoxDecoration(

     

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                   color: AppColors.backgroundSecondary,

     

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                   borderRadius: BorderRadius.circular(8),

     

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                 ),

     

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                 child: Row(

     

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                   children: [

     

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                     // Favicon

     

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                     _buildFavicon(),

     

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                     const SizedBox(width: 8),

     

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                     Expanded(

     

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                       child: Text(

     

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                         domain,

     

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                         style: TextStyle(

     

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                           color: AppColors.textPrimary.withValues(alpha: 0.7),

     

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                           fontSize: 13,

     

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                         ),

     

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                         maxLines: 1,

     

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                         overflow: TextOverflow.ellipsis,

     

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                       ),

     

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                     ),

     

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                     const SizedBox(width: 8),

     

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                     Icon(

     

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                       Icons.open_in_new,

     

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                       size: 14,

     

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                       color: AppColors.textPrimary.withValues(alpha: 0.7),

     

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                     ),

     

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                   ],

     

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                 ),

     

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               ),

     

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             ),

     

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           );

     

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         }

     

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         /// Extracts the domain from the embed

     

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         String _extractDomain() {

     

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           // Use domain field if available

     

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           if (embed.domain != null && embed.domain!.isNotEmpty) {

     

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             return embed.domain!;

     

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           }

     

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           // Otherwise parse from URI

     

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           try {

     

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             final uri = Uri.parse(embed.uri);

     

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             if (uri.host.isNotEmpty) {

     

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               return uri.host;

     

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             }

     

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           } on FormatException {

     

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             // Invalid URI, fall through to fallback

     

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           }

     

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           // Fallback to full URI if domain extraction fails

     

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           return embed.uri;

     

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         }

     

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         /// Builds the favicon widget

     

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         Widget _buildFavicon() {

     

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           // Extract domain for favicon URL

     

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           var domain = embed.domain;

     

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           if (domain == null || domain.isEmpty) {

     

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             try {

     

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               final uri = Uri.parse(embed.uri);

     

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               domain = uri.host;

     

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             } on FormatException {

     

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               domain = null;

     

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             }

     

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           }

     

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           if (domain == null || domain.isEmpty) {

     

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             // Fallback to link icon if we can't get the domain

     

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             return Icon(

     

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               Icons.link,

     

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               size: 18,

     

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               color: AppColors.textPrimary.withValues(alpha: 0.7),

     

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             );

     

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           }

     

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           // Use Google's favicon service

     

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           final faviconUrl =

     

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               'https://www.google.com/s2/favicons?domain=$domain&sz=32';

     

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           return ClipRRect(

     

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             borderRadius: BorderRadius.circular(4),

     

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             child: CachedNetworkImage(

     

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               imageUrl: faviconUrl,

     

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               width: 18,

     

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               height: 18,

     

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               fit: BoxFit.cover,

     

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               placeholder:

     

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                   (context, url) => Icon(

     

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                     Icons.link,

     

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                     size: 18,

     

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                     color: AppColors.textPrimary.withValues(alpha: 0.7),

     

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                   ),

     

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               errorWidget:

     

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                   (context, url, error) => Icon(

     

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                     Icons.link,

     

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                     size: 18,

     

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                     color: AppColors.textPrimary.withValues(alpha: 0.7),

     

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                   ),

     

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             ),

     

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           );

     

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         }

     

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       }