commit 77c7a1c3a55dc969684c3335d1e491576ef4c0a4 · bretton.dev/coves

+142

internal/core/communities/pds_provisioning.go

···

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       package communities

     

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       +
       

     

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       import (

     

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       	"context"

     

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       	"crypto/rand"

     

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       	"encoding/base64"

     

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       	"fmt"

     

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       	"strings"

     

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       +
       

     

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       	"Coves/internal/core/users"

     

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       	"golang.org/x/crypto/bcrypt"

     

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       )

     

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       // CommunityPDSAccount represents PDS account credentials for a community

     

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       type CommunityPDSAccount struct {

     

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       	DID          string // Community's DID (owns the repository)

     

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       	Handle       string // Community's handle (e.g., gaming.coves.social)

     

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       	Email        string // System email for PDS account

     

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       	PasswordHash string // bcrypt hash of generated password

     

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       	AccessToken  string // JWT for making API calls as the community

     

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       	RefreshToken string // For refreshing sessions

     

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       	PDSURL       string // PDS hosting this community

     

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       }

     

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       // PDSAccountProvisioner creates PDS accounts for communities

     

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       type PDSAccountProvisioner struct {

     

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       	userService    users.UserService

     

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       	instanceDomain string

     

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       	pdsURL         string

     

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       }

     

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       // NewPDSAccountProvisioner creates a new provisioner

     

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       func NewPDSAccountProvisioner(userService users.UserService, instanceDomain string, pdsURL string) *PDSAccountProvisioner {

     

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       	return &PDSAccountProvisioner{

     

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       		userService:    userService,

     

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       		instanceDomain: instanceDomain,

     

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       		pdsURL:         pdsURL,

     

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       	}

     

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       }

     

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       // ProvisionCommunityAccount creates a real PDS account for a community

     

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       //

     

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       // This function:

     

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       // 1. Generates a unique handle (e.g., gaming.coves.social)

     

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       // 2. Generates a system email (e.g., community-gaming@system.coves.social)

     

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       // 3. Generates a secure random password

     

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       // 4. Calls com.atproto.server.createAccount via the PDS

     

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       // 5. The PDS automatically generates and stores the signing keypair

     

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       // 6. Returns credentials for Coves to act on behalf of the community

     

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       //

     

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       // V2 Architecture:

     

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       // - Community DID owns its own repository (at://community_did/...)

     

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       // - PDS manages signing keys (we never see them)

     

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       // - We store credentials to authenticate as the community

     

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       // - Future: Add rotation key management for true portability (V2.1)

     

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       func (p *PDSAccountProvisioner) ProvisionCommunityAccount(

     

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       	ctx context.Context,

     

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       	communityName string,

     

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       ) (*CommunityPDSAccount, error) {

     

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       	if communityName == "" {

     

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       		return nil, fmt.Errorf("community name is required")

     

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       	}

     

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       	// 1. Generate unique handle for the community using subdomain

     

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       	// This makes it immediately clear these are communities, not user accounts

     

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       	// Format: {name}.communities.{instance-domain}

     

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       	handle := fmt.Sprintf("%s.communities.%s", strings.ToLower(communityName), p.instanceDomain)

     

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       	// Example: "gaming.communities.coves.social" (much cleaner!)

     

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       	// 2. Generate system email for PDS account management

     

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       	// This email is used for account operations, not for user communication

     

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       	email := fmt.Sprintf("community-%s@communities.%s", strings.ToLower(communityName), p.instanceDomain)

     

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       	// Example: "community-gaming@communities.coves.social"

     

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       	// 3. Generate secure random password (32 characters)

     

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       	// This password is never shown to users - it's for Coves to authenticate as the community

     

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       	password, err := generateSecurePassword(32)

     

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       	if err != nil {

     

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       		return nil, fmt.Errorf("failed to generate password: %w", err)

     

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       	}

     

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       	// 4. Call PDS com.atproto.server.createAccount

     

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       	// The PDS will:

     

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       	//   - Generate a signing keypair (we never see the private key)

     

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       	//   - Create a DID (did:plc:xxx)

     

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       	//   - Store the private signing key securely

     

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       	//   - Return DID, handle, and authentication tokens

     

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       	//

     

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       	// Note: No inviteCode needed for our local PDS (configure PDS with invites disabled)

     

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       	resp, err := p.userService.RegisterAccount(ctx, users.RegisterAccountRequest{

     

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       		Handle:   handle,

     

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       		Email:    email,

     

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       		Password: password,

     

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       		// InviteCode: "", // Not needed if PDS has open registration or we're admin

     

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       	})

     

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       	if err != nil {

     

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       		return nil, fmt.Errorf("PDS account creation failed for community %s: %w", communityName, err)

     

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       	}

     

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       	// 5. Hash the password for storage

     

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       	// We need to store the password hash so we can re-authenticate if tokens expire

     

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       	// This is secure - bcrypt is industry standard

     

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       	passwordHash, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)

     

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       	if err != nil {

     

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       		return nil, fmt.Errorf("failed to hash password: %w", err)

     

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       	}

     

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       	// 6. Return account credentials

     

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       	return &CommunityPDSAccount{

     

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       		DID:          resp.DID,           // The community's DID - it owns its own repository!

     

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       		Handle:       resp.Handle,        // e.g., gaming.coves.social

     

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       		Email:        email,              // community-gaming@system.coves.social

     

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       		PasswordHash: string(passwordHash), // bcrypt hash for re-authentication

     

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       		AccessToken:  resp.AccessJwt,     // JWT for making API calls as the community

     

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       		RefreshToken: resp.RefreshJwt,    // For refreshing sessions when access token expires

     

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       		PDSURL:       resp.PDSURL,        // PDS hosting this community's repository

     

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       	}, nil

     

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       }

     

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       // generateSecurePassword creates a cryptographically secure random password

     

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       // Uses crypto/rand for security-critical randomness

     

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       func generateSecurePassword(length int) (string, error) {

     

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       	if length < 8 {

     

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       		return "", fmt.Errorf("password length must be at least 8 characters")

     

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       	}

     

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       	// Generate random bytes

     

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       	bytes := make([]byte, length)

     

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       	if _, err := rand.Read(bytes); err != nil {

     

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       		return "", fmt.Errorf("failed to generate random bytes: %w", err)

     

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       	}

     

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       	// Encode as base64 URL-safe (no special chars that need escaping)

     

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       	password := base64.URLEncoding.EncodeToString(bytes)

     

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       	// Trim to exact length

     

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       	if len(password) > length {

     

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       		password = password[:length]

     

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       	}

     

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       	return password, nil

     

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       }

+138 -42

internal/core/communities/service.go

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       	didGen          *did.Generator

     

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       	pdsURL          string // PDS URL for write-forward operations

     

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       	instanceDID     string // DID of this Coves instance

     

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       	instanceDomain  string // Domain of this instance (for handles)

     

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       	pdsAccessToken  string // Access token for authenticating to PDS as the instance

     

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       	provisioner     *PDSAccountProvisioner // V2: Creates PDS accounts for communities

     

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       }

     

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       // NewCommunityService creates a new community service

     

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       func NewCommunityService(repo Repository, didGen *did.Generator, pdsURL string, instanceDID string) Service {

     

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       func NewCommunityService(repo Repository, didGen *did.Generator, pdsURL string, instanceDID string, instanceDomain string, provisioner *PDSAccountProvisioner) Service {

     

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       	return &communityService{

     

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       		repo:        repo,

     

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       		didGen:      didGen,

     

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       		pdsURL:      pdsURL,

     

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       		instanceDID: instanceDID,

     

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       		repo:           repo,

     

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       		didGen:         didGen,

     

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       		pdsURL:         pdsURL,

     

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       		instanceDID:    instanceDID,

     

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       		instanceDomain: instanceDomain,

     

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       		provisioner:    provisioner,

     

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       	}

     

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       }

     

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···

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       }

     

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       // CreateCommunity creates a new community via write-forward to PDS

     

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       // Flow: Service -> PDS (creates record) -> Firehose -> Consumer -> AppView DB

     

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       // V2 Flow:

     

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       // 1. Service creates PDS account for community (PDS generates signing keypair)

     

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       // 2. Service writes community profile to COMMUNITY's own repository

     

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       // 3. Firehose emits event

     

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       // 4. Consumer indexes to AppView DB

     

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       //

     

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       // V2 Architecture:

     

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       // - Community owns its own repository (at://community_did/social.coves.community.profile/self)

     

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       // - PDS manages the signing keypair (we never see it)

     

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       // - We store PDS credentials to act on behalf of the community

     

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       // - Community can migrate to other instances (future V2.1 with rotation keys)

     

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       func (s *communityService) CreateCommunity(ctx context.Context, req CreateCommunityRequest) (*Community, error) {

     

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       	// Apply defaults before validation

     

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       	if req.Visibility == "" {

     
···

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       		return nil, err

     

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       	}

     

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       -
       	// Generate a unique DID for the community

     

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       	communityDID, err := s.didGen.GenerateCommunityDID()

     

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       	// V2: Provision a real PDS account for this community

     

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       	// This calls com.atproto.server.createAccount internally

     

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       	// The PDS will:

     

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       	//   1. Generate a signing keypair (stored in PDS, we never see it)

     

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       	//   2. Create a DID (did:plc:xxx)

     

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       	//   3. Return credentials (DID, tokens)

     

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       	pdsAccount, err := s.provisioner.ProvisionCommunityAccount(ctx, req.Name)

     

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       	if err != nil {

     

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       		return nil, fmt.Errorf("failed to generate community DID: %w", err)

     

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       		return nil, fmt.Errorf("failed to provision PDS account for community: %w", err)

     

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       	}

     

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       	// Build scoped handle: !{name}@{instance}

     

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       	instanceDomain := extractDomain(s.instanceDID)

     

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       	if instanceDomain == "" {

     

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       		instanceDomain = "coves.local" // Fallback for testing

     

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       	}

     

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       	handle := fmt.Sprintf("!%s@%s", req.Name, instanceDomain)

     

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       	// Build scoped handle for display: !{name}@{instance}

     

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       	// Note: The community's atProto handle is pdsAccount.Handle (e.g., gaming.communities.coves.social)

     

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       	// The scoped handle (!gaming@coves.social) is for UI/UX - cleaner than the full atProto handle

     

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       	scopedHandle := fmt.Sprintf("!%s@%s", req.Name, s.instanceDomain)

     

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       	// Validate the generated handle

     

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       	if err := s.ValidateHandle(handle); err != nil {

     

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       		return nil, fmt.Errorf("generated handle is invalid: %w", err)

     

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       	// Validate the scoped handle

     

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       	if err := s.ValidateHandle(scopedHandle); err != nil {

     

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       		return nil, fmt.Errorf("generated scoped handle is invalid: %w", err)

     

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       	}

     

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       	// Build community profile record

     

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       	profile := map[string]interface{}{

     

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       		"$type":      "social.coves.community.profile",

     

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       		"did":        communityDID, // Unique identifier for this community

     

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       		"handle":     handle,

     

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       		"handle":     scopedHandle,        // Display handle (!gaming@coves.social)

     

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       		"atprotoHandle": pdsAccount.Handle, // Real atProto handle (gaming.communities.coves.social)

     

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       		"name":       req.Name,

     

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       		"visibility": req.Visibility,

     

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       		"owner":      s.instanceDID, // V1: instance owns the community

     

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       		"hostedBy":   s.instanceDID,       // V2: Instance hosts, community owns

     

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       		"createdBy":  req.CreatedByDID,

     

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       		"hostedBy":   req.HostedByDID,

     

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       		"createdAt":  time.Now().Format(time.RFC3339),

     

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       		"federation": map[string]interface{}{

     

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       			"allowExternalDiscovery": req.AllowExternalDiscovery,

     
···

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       	// 2. Get blob ref (CID)

     

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       	// 3. Add to profile record

     

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       	// Write-forward to PDS: create the community profile record in the INSTANCE's repository

     

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       	// The instance owns all community records, community DID is just metadata in the record

     

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       	// Record will be at: at://INSTANCE_DID/social.coves.community.profile/COMMUNITY_RKEY

     

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       	recordURI, recordCID, err := s.createRecordOnPDS(ctx, s.instanceDID, "social.coves.community.profile", "", profile)

     

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       	// V2: Write to COMMUNITY's own repository (not instance repo!)

     

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       	// Repository: at://COMMUNITY_DID/social.coves.community.profile/self

     

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       	// Authenticate using community's access token

     

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       	recordURI, recordCID, err := s.createRecordOnPDSAs(

     

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       		ctx,

     

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       		pdsAccount.DID,                    // repo = community's DID (community owns its repo!)

     

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       		"social.coves.community.profile",

     

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       		"self",                            // canonical rkey for profile

     

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       		profile,

     

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       		pdsAccount.AccessToken,            // authenticate as the community

     

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       	)

     

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       	if err != nil {

     

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       		return nil, fmt.Errorf("failed to create community on PDS: %w", err)

     

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       		return nil, fmt.Errorf("failed to create community profile record: %w", err)

     

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       	}

     

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       	// Return a Community object representing what was created

     

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       	// Note: This won't be in AppView DB until the Jetstream consumer processes it

     

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       	// Build Community object with PDS credentials

     

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       	community := &Community{

     

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       -
       		DID:                    communityDID,

     

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       		Handle:                 handle,

     

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       		DID:                    pdsAccount.DID,         // Community's DID (owns the repo!)

     

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       		Handle:                 scopedHandle,           // !gaming@coves.social

     

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       		Name:                   req.Name,

     

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       		DisplayName:            req.DisplayName,

     

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       		Description:            req.Description,

     

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       		OwnerDID:               s.instanceDID,

     

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       		OwnerDID:               pdsAccount.DID,         // V2: Community owns itself

     

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       		CreatedByDID:           req.CreatedByDID,

     

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       		HostedByDID:            req.HostedByDID,

     

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       		PDSEmail:               pdsAccount.Email,

     

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       		PDSPasswordHash:        pdsAccount.PasswordHash,

     

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       		PDSAccessToken:         pdsAccount.AccessToken,

     

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       		PDSRefreshToken:        pdsAccount.RefreshToken,

     

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       		PDSURL:                 pdsAccount.PDSURL,

     

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       		Visibility:             req.Visibility,

     

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       		AllowExternalDiscovery: req.AllowExternalDiscovery,

     

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       		MemberCount:            0,

     
···

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       		UpdatedAt:              time.Now(),

     

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       		RecordURI:              recordURI,

     

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       		RecordCID:              recordCID,

     

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       	}

     

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       	// CRITICAL: Persist PDS credentials immediately to database

     

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       175
       +
       	// The Jetstream consumer will eventually index the community profile from the firehose,

     

       176
       176
       +
       	// but it won't have the PDS credentials. We must store them now so we can:

     

       177
       177
       +
       	// 1. Update the community profile later (using its own credentials)

     

       178
       178
       +
       	// 2. Re-authenticate if access tokens expire

     

       179
       179
       +
       	_, err = s.repo.Create(ctx, community)

     

       180
       180
       +
       	if err != nil {

     

       181
       181
       +
       		return nil, fmt.Errorf("failed to persist community with credentials: %w", err)

     

       145
       182
        
       	}

     

       146
       183
        
       

     

       147
       184
        
       	return community, nil

     
···

       240
       277
        
       	profile["memberCount"] = existing.MemberCount

     

       241
       278
        
       	profile["subscriberCount"] = existing.SubscriberCount

     

       242
       279
        
       

     

       243
       243
       -
       	// Extract rkey from existing record URI (communities live in instance's repo)

     

       244
       244
       -
       	rkey := extractRKeyFromURI(existing.RecordURI)

     

       245
       245
       -
       	if rkey == "" {

     

       246
       246
       -
       		return nil, fmt.Errorf("invalid community record URI: %s", existing.RecordURI)

     

       280
       280
       +
       	// V2: Community profiles always use "self" as rkey

     

       281
       281
       +
       	// (No need to extract from URI - it's always "self" for V2 communities)

     

       282
       282
       +
       

     

       283
       283
       +
       	// V2 CRITICAL FIX: Write-forward using COMMUNITY's own DID and credentials

     

       284
       284
       +
       	// Repository: at://COMMUNITY_DID/social.coves.community.profile/self

     

       285
       285
       +
       	// Authenticate as the community (not as instance!)

     

       286
       286
       +
       	if existing.PDSAccessToken == "" {

     

       287
       287
       +
       		return nil, fmt.Errorf("community %s missing PDS credentials - cannot update", existing.DID)

     

       247
       288
        
       	}

     

       248
       289
        
       

     

       249
       249
       -
       	// Write-forward: update record on PDS using INSTANCE DID (communities are stored in instance repo)

     

       250
       250
       -
       	recordURI, recordCID, err := s.putRecordOnPDS(ctx, s.instanceDID, "social.coves.community.profile", rkey, profile)

     

       290
       290
       +
       	recordURI, recordCID, err := s.putRecordOnPDSAs(

     

       291
       291
       +
       		ctx,

     

       292
       292
       +
       		existing.DID,                      // repo = community's own DID (V2!)

     

       293
       293
       +
       		"social.coves.community.profile",

     

       294
       294
       +
       		"self",                            // V2: always "self"

     

       295
       295
       +
       		profile,

     

       296
       296
       +
       		existing.PDSAccessToken,           // authenticate as the community

     

       297
       297
       +
       	)

     

       251
       298
        
       	if err != nil {

     

       252
       299
        
       		return nil, fmt.Errorf("failed to update community on PDS: %w", err)

     

       253
       300
        
       	}

     
···

       521
       568
        
       	return s.callPDS(ctx, "POST", endpoint, payload)

     

       522
       569
        
       }

     

       523
       570
        
       

     

       571
       571
       +
       // createRecordOnPDSAs creates a record with a specific access token (for V2 community auth)

     

       572
       572
       +
       func (s *communityService) createRecordOnPDSAs(ctx context.Context, repoDID, collection, rkey string, record map[string]interface{}, accessToken string) (string, string, error) {

     

       573
       573
       +
       	endpoint := fmt.Sprintf("%s/xrpc/com.atproto.repo.createRecord", strings.TrimSuffix(s.pdsURL, "/"))

     

       574
       574
       +
       

     

       575
       575
       +
       	payload := map[string]interface{}{

     

       576
       576
       +
       		"repo":       repoDID,

     

       577
       577
       +
       		"collection": collection,

     

       578
       578
       +
       		"record":     record,

     

       579
       579
       +
       	}

     

       580
       580
       +
       

     

       581
       581
       +
       	if rkey != "" {

     

       582
       582
       +
       		payload["rkey"] = rkey

     

       583
       583
       +
       	}

     

       584
       584
       +
       

     

       585
       585
       +
       	return s.callPDSWithAuth(ctx, "POST", endpoint, payload, accessToken)

     

       586
       586
       +
       }

     

       587
       587
       +
       

     

       524
       588
        
       func (s *communityService) putRecordOnPDS(ctx context.Context, repoDID, collection, rkey string, record map[string]interface{}) (string, string, error) {

     

       525
       589
        
       	endpoint := fmt.Sprintf("%s/xrpc/com.atproto.repo.putRecord", strings.TrimSuffix(s.pdsURL, "/"))

     

       526
       590
        
       

     
···

       534
       598
        
       	return s.callPDS(ctx, "POST", endpoint, payload)

     

       535
       599
        
       }

     

       536
       600
        
       

     

       601
       601
       +
       // putRecordOnPDSAs updates a record with a specific access token (for V2 community auth)

     

       602
       602
       +
       func (s *communityService) putRecordOnPDSAs(ctx context.Context, repoDID, collection, rkey string, record map[string]interface{}, accessToken string) (string, string, error) {

     

       603
       603
       +
       	endpoint := fmt.Sprintf("%s/xrpc/com.atproto.repo.putRecord", strings.TrimSuffix(s.pdsURL, "/"))

     

       604
       604
       +
       

     

       605
       605
       +
       	payload := map[string]interface{}{

     

       606
       606
       +
       		"repo":       repoDID,

     

       607
       607
       +
       		"collection": collection,

     

       608
       608
       +
       		"rkey":       rkey,

     

       609
       609
       +
       		"record":     record,

     

       610
       610
       +
       	}

     

       611
       611
       +
       

     

       612
       612
       +
       	return s.callPDSWithAuth(ctx, "POST", endpoint, payload, accessToken)

     

       613
       613
       +
       }

     

       614
       614
       +
       

     

       537
       615
        
       func (s *communityService) deleteRecordOnPDS(ctx context.Context, repoDID, collection, rkey string) error {

     

       538
       616
        
       	endpoint := fmt.Sprintf("%s/xrpc/com.atproto.repo.deleteRecord", strings.TrimSuffix(s.pdsURL, "/"))

     

       539
       617
        
       

     
···

       548
       626
        
       }

     

       549
       627
        
       

     

       550
       628
        
       func (s *communityService) callPDS(ctx context.Context, method, endpoint string, payload map[string]interface{}) (string, string, error) {

     

       629
       629
       +
       	// Use instance's access token

     

       630
       630
       +
       	return s.callPDSWithAuth(ctx, method, endpoint, payload, s.pdsAccessToken)

     

       631
       631
       +
       }

     

       632
       632
       +
       

     

       633
       633
       +
       // callPDSWithAuth makes a PDS call with a specific access token (V2: for community authentication)

     

       634
       634
       +
       func (s *communityService) callPDSWithAuth(ctx context.Context, method, endpoint string, payload map[string]interface{}, accessToken string) (string, string, error) {

     

       551
       635
        
       	jsonData, err := json.Marshal(payload)

     

       552
       636
        
       	if err != nil {

     

       553
       637
        
       		return "", "", fmt.Errorf("failed to marshal payload: %w", err)

     
···

       559
       643
        
       	}

     

       560
       644
        
       	req.Header.Set("Content-Type", "application/json")

     

       561
       645
        
       

     

       562
       562
       -
       	// Add authentication if we have an access token

     

       563
       563
       -
       	if s.pdsAccessToken != "" {

     

       564
       564
       -
       		req.Header.Set("Authorization", "Bearer "+s.pdsAccessToken)

     

       646
       646
       +
       	// Add authentication with provided access token

     

       647
       647
       +
       	if accessToken != "" {

     

       648
       648
       +
       		req.Header.Set("Authorization", "Bearer "+accessToken)

     

       565
       649
        
       	}

     

       566
       650
        
       

     

       567
       567
       -
       	client := &http.Client{Timeout: 10 * time.Second}

     

       651
       651
       +
       	// Dynamic timeout based on operation type

     

       652
       652
       +
       	// Write operations (createAccount, createRecord, putRecord) are slower due to:

     

       653
       653
       +
       	// - Keypair generation

     

       654
       654
       +
       	// - DID PLC registration

     

       655
       655
       +
       	// - Database writes on PDS

     

       656
       656
       +
       	timeout := 10 * time.Second // Default for read operations

     

       657
       657
       +
       	if strings.Contains(endpoint, "createAccount") ||

     

       658
       658
       +
       		strings.Contains(endpoint, "createRecord") ||

     

       659
       659
       +
       		strings.Contains(endpoint, "putRecord") {

     

       660
       660
       +
       		timeout = 30 * time.Second // Extended timeout for write operations

     

       661
       661
       +
       	}

     

       662
       662
       +
       

     

       663
       663
       +
       	client := &http.Client{Timeout: timeout}

     

       568
       664
        
       	resp, err := client.Do(req)

     

       569
       665
        
       	if err != nil {

     

       570
       666
        
       		return "", "", fmt.Errorf("failed to call PDS: %w", err)