commit d44e1411c15cd1f42f8538e4f8a119155bd8c142 · bretton.dev/coves

+363
internal/atproto/jetstream/community_consumer.go
···

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       package jetstream

     

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       import (

     

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       	"context"

     

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       	"encoding/json"

     

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       	"fmt"

     

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       	"log"

     

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       	"strings"

     

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       	"time"

     

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       	"Coves/internal/core/communities"

     

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       )

     

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       // CommunityEventConsumer consumes community-related events from Jetstream

     

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       type CommunityEventConsumer struct {

     

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       	repo communities.Repository

     

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       }

     

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       // NewCommunityEventConsumer creates a new Jetstream consumer for community events

     

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       func NewCommunityEventConsumer(repo communities.Repository) *CommunityEventConsumer {

     

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       	return &CommunityEventConsumer{

     

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       		repo: repo,

     

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       	}

     

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       }

     

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       // HandleEvent processes a Jetstream event for community records

     

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       // This is called by the main Jetstream consumer when it receives commit events

     

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       func (c *CommunityEventConsumer) HandleEvent(ctx context.Context, event *JetstreamEvent) error {

     

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       	// We only care about commit events for community records

     

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       	if event.Kind != "commit" || event.Commit == nil {

     

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       		return nil

     

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       	}

     

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       	commit := event.Commit

     

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       	// Route to appropriate handler based on collection

     

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       	switch commit.Collection {

     

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       	case "social.coves.community.profile":

     

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       		return c.handleCommunityProfile(ctx, event.Did, commit)

     

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       	case "social.coves.community.subscribe":

     

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       		return c.handleSubscription(ctx, event.Did, commit)

     

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       	case "social.coves.community.unsubscribe":

     

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       		return c.handleUnsubscribe(ctx, event.Did, commit)

     

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       	default:

     

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       		// Not a community-related collection

     

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       		return nil

     

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       	}

     

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       }

     

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       // handleCommunityProfile processes community profile create/update/delete events

     

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       func (c *CommunityEventConsumer) handleCommunityProfile(ctx context.Context, did string, commit *CommitEvent) error {

     

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       	switch commit.Operation {

     

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       	case "create":

     

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       		return c.createCommunity(ctx, did, commit)

     

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       	case "update":

     

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       		return c.updateCommunity(ctx, did, commit)

     

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       	case "delete":

     

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       		return c.deleteCommunity(ctx, did)

     

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       	default:

     

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       		log.Printf("Unknown operation for community profile: %s", commit.Operation)

     

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       		return nil

     

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       	}

     

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       }

     

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       // createCommunity indexes a new community from the firehose

     

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       func (c *CommunityEventConsumer) createCommunity(ctx context.Context, did string, commit *CommitEvent) error {

     

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       	if commit.Record == nil {

     

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       		return fmt.Errorf("community profile create event missing record data")

     

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       	}

     

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       	// Parse the community profile record

     

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       	profile, err := parseCommunityProfile(commit.Record)

     

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       	if err != nil {

     

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

     

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       	}

     

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       	// Build AT-URI for this record

     

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       	// IMPORTANT: 'did' parameter is the repository owner (instance DID)

     

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       	// The community's DID comes from profile.Did field in the record

     

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       	uri := fmt.Sprintf("at://%s/social.coves.community.profile/%s", did, commit.RKey)

     

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       	// Create community entity

     

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       	community := &communities.Community{

     

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       		DID:                    profile.Did, // Community's unique DID from record, not repo owner!

     

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       		Handle:                 profile.Handle,

     

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       		Name:                   profile.Name,

     

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       		DisplayName:            profile.DisplayName,

     

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       		Description:            profile.Description,

     

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       		OwnerDID:               profile.Owner,

     

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       		CreatedByDID:           profile.CreatedBy,

     

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       		HostedByDID:            profile.HostedBy,

     

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       		Visibility:             profile.Visibility,

     

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       		AllowExternalDiscovery: profile.Federation.AllowExternalDiscovery,

     

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       		ModerationType:         profile.ModerationType,

     

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       		ContentWarnings:        profile.ContentWarnings,

     

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       		MemberCount:            profile.MemberCount,

     

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       		SubscriberCount:        profile.SubscriberCount,

     

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       		FederatedFrom:          profile.FederatedFrom,

     

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       		FederatedID:            profile.FederatedID,

     

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       		CreatedAt:              profile.CreatedAt,

     

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       		UpdatedAt:              time.Now(),

     

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       		RecordURI:              uri,

     

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       		RecordCID:              commit.CID,

     

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       	}

     

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       	// Handle blobs (avatar/banner) if present

     

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       	if avatarCID, ok := extractBlobCID(profile.Avatar); ok {

     

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       		community.AvatarCID = avatarCID

     

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       	}

     

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       	if bannerCID, ok := extractBlobCID(profile.Banner); ok {

     

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       		community.BannerCID = bannerCID

     

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       	}

     

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       	// Handle description facets (rich text)

     

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       	if profile.DescriptionFacets != nil {

     

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       		facetsJSON, err := json.Marshal(profile.DescriptionFacets)

     

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       		if err == nil {

     

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       			community.DescriptionFacets = facetsJSON

     

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       		}

     

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       	}

     

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       	// Index in AppView database

     

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       	_, err = c.repo.Create(ctx, community)

     

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       	if err != nil {

     

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       		// Check if it already exists (idempotency)

     

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       		if communities.IsConflict(err) {

     

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       			log.Printf("Community already indexed: %s (%s)", community.Handle, community.DID)

     

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       			return nil

     

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       		}

     

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       		return fmt.Errorf("failed to index community: %w", err)

     

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       	}

     

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       	log.Printf("Indexed new community: %s (%s)", community.Handle, community.DID)

     

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       	return nil

     

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       }

     

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       // updateCommunity updates an existing community from the firehose

     

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       func (c *CommunityEventConsumer) updateCommunity(ctx context.Context, did string, commit *CommitEvent) error {

     

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       	if commit.Record == nil {

     

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       		return fmt.Errorf("community profile update event missing record data")

     

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       	}

     

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       	// Parse profile to get the community DID

     

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       	profile, err := parseCommunityProfile(commit.Record)

     

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       	if err != nil {

     

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

     

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       	}

     

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       	// Get existing community using the community DID from the record, not repo owner

     

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       	existing, err := c.repo.GetByDID(ctx, profile.Did)

     

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       	if err != nil {

     

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       		if communities.IsNotFound(err) {

     

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       			// Community doesn't exist yet - treat as create

     

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       			log.Printf("Community not found for update, creating: %s", profile.Did)

     

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       			return c.createCommunity(ctx, did, commit)

     

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       		}

     

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       		return fmt.Errorf("failed to get existing community: %w", err)

     

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       	}

     

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       	// Update fields

     

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       	existing.Handle = profile.Handle

     

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       	existing.Name = profile.Name

     

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       	existing.DisplayName = profile.DisplayName

     

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       	existing.Description = profile.Description

     

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       	existing.Visibility = profile.Visibility

     

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       	existing.AllowExternalDiscovery = profile.Federation.AllowExternalDiscovery

     

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       	existing.ModerationType = profile.ModerationType

     

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       	existing.ContentWarnings = profile.ContentWarnings

     

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       	existing.RecordCID = commit.CID

     

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       	// Update blobs

     

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       	if avatarCID, ok := extractBlobCID(profile.Avatar); ok {

     

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       		existing.AvatarCID = avatarCID

     

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       	}

     

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       	if bannerCID, ok := extractBlobCID(profile.Banner); ok {

     

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       		existing.BannerCID = bannerCID

     

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       	}

     

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       	// Update description facets

     

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       	if profile.DescriptionFacets != nil {

     

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       		facetsJSON, err := json.Marshal(profile.DescriptionFacets)

     

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       		if err == nil {

     

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       			existing.DescriptionFacets = facetsJSON

     

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       		}

     

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       	}

     

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       	// Save updates

     

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       	_, err = c.repo.Update(ctx, existing)

     

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       	if err != nil {

     

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       		return fmt.Errorf("failed to update community: %w", err)

     

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       	}

     

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       	log.Printf("Updated community: %s (%s)", existing.Handle, existing.DID)

     

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       	return nil

     

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       }

     

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       // deleteCommunity removes a community from the index

     

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       func (c *CommunityEventConsumer) deleteCommunity(ctx context.Context, did string) error {

     

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       	err := c.repo.Delete(ctx, did)

     

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       	if err != nil {

     

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       		if communities.IsNotFound(err) {

     

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       			log.Printf("Community already deleted: %s", did)

     

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       			return nil

     

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       		}

     

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       		return fmt.Errorf("failed to delete community: %w", err)

     

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       	}

     

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       	log.Printf("Deleted community: %s", did)

     

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       	return nil

     

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       }

     

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       // handleSubscription indexes a subscription event

     

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       func (c *CommunityEventConsumer) handleSubscription(ctx context.Context, userDID string, commit *CommitEvent) error {

     

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       	if commit.Operation != "create" {

     

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       		return nil // Subscriptions are only created, not updated

     

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       	}

     

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       	if commit.Record == nil {

     

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       		return fmt.Errorf("subscription event missing record data")

     

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       	}

     

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       	// Extract community DID from record

     

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       	communityDID, ok := commit.Record["community"].(string)

     

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       	if !ok {

     

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       		return fmt.Errorf("subscription record missing community field")

     

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       	}

     

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       	// Build AT-URI for subscription record

     

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       	uri := fmt.Sprintf("at://%s/social.coves.community.subscribe/%s", userDID, commit.RKey)

     

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       	// Create subscription

     

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       	subscription := &communities.Subscription{

     

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       		UserDID:      userDID,

     

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       		CommunityDID: communityDID,

     

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       		SubscribedAt: time.Now(),

     

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       		RecordURI:    uri,

     

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       		RecordCID:    commit.CID,

     

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       	}

     

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       	// Use transactional method to ensure subscription and count are atomically updated

     

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       	// This is idempotent - safe for Jetstream replays

     

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       	_, err := c.repo.SubscribeWithCount(ctx, subscription)

     

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       	if err != nil {

     

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       		return fmt.Errorf("failed to index subscription: %w", err)

     

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       	}

     

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       	log.Printf("Indexed subscription: %s -> %s", userDID, communityDID)

     

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       	return nil

     

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       }

     

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       // handleUnsubscribe removes a subscription

     

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       func (c *CommunityEventConsumer) handleUnsubscribe(ctx context.Context, userDID string, commit *CommitEvent) error {

     

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       	if commit.Operation != "delete" {

     

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       		return nil

     

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       	}

     

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       	// For unsubscribe, we need to extract the community DID from the record key or metadata

     

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       	// This might need adjustment based on actual Jetstream structure

     

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       	if commit.Record == nil {

     

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       		return fmt.Errorf("unsubscribe event missing record data")

     

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       	}

     

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       	communityDID, ok := commit.Record["community"].(string)

     

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       	if !ok {

     

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       		return fmt.Errorf("unsubscribe record missing community field")

     

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       	}

     

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       	// Use transactional method to ensure unsubscribe and count are atomically updated

     

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       	// This is idempotent - safe for Jetstream replays

     

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       	err := c.repo.UnsubscribeWithCount(ctx, userDID, communityDID)

     

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       	if err != nil {

     

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       		return fmt.Errorf("failed to remove subscription: %w", err)

     

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       	}

     

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       	log.Printf("Removed subscription: %s -> %s", userDID, communityDID)

     

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       	return nil

     

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       }

     

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       // Helper types and functions

     

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       type CommunityProfile struct {

     

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       	Did                 string                   `json:"did"`         // Community's unique DID

     

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       	Handle              string                   `json:"handle"`

     

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       	Name                string                   `json:"name"`

     

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       	DisplayName         string                   `json:"displayName"`

     

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       	Description         string                   `json:"description"`

     

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       	DescriptionFacets   []interface{}            `json:"descriptionFacets"`

     

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       	Avatar              map[string]interface{}   `json:"avatar"`

     

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       	Banner              map[string]interface{}   `json:"banner"`

     

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       	Owner               string                   `json:"owner"`

     

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       	CreatedBy           string                   `json:"createdBy"`

     

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       	HostedBy            string                   `json:"hostedBy"`

     

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       	Visibility          string                   `json:"visibility"`

     

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       	Federation          FederationConfig         `json:"federation"`

     

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       	ModerationType      string                   `json:"moderationType"`

     

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       	ContentWarnings     []string                 `json:"contentWarnings"`

     

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       	MemberCount         int                      `json:"memberCount"`

     

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       	SubscriberCount     int                      `json:"subscriberCount"`

     

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       	FederatedFrom       string                   `json:"federatedFrom"`

     

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       	FederatedID         string                   `json:"federatedId"`

     

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       	CreatedAt           time.Time                `json:"createdAt"`

     

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       }

     

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       type FederationConfig struct {

     

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       	AllowExternalDiscovery bool `json:"allowExternalDiscovery"`

     

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       }

     

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       // parseCommunityProfile converts a raw record map to a CommunityProfile

     

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       func parseCommunityProfile(record map[string]interface{}) (*CommunityProfile, error) {

     

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       	recordJSON, err := json.Marshal(record)

     

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       	if err != nil {

     

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

     

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       	}

     

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       	var profile CommunityProfile

     

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       316
       +
       	if err := json.Unmarshal(recordJSON, &profile); err != nil {

     

       317
       317
       +
       		return nil, fmt.Errorf("failed to unmarshal profile: %w", err)

     

       318
       318
       +
       	}

     

       319
       319
       +
       

     

       320
       320
       +
       	return &profile, nil

     

       321
       321
       +
       }

     

       322
       322
       +
       

     

       323
       323
       +
       // extractBlobCID extracts the CID from a blob reference

     

       324
       324
       +
       // Blob format: {"$type": "blob", "ref": {"$link": "cid"}, "mimeType": "...", "size": 123}

     

       325
       325
       +
       func extractBlobCID(blob map[string]interface{}) (string, bool) {

     

       326
       326
       +
       	if blob == nil {

     

       327
       327
       +
       		return "", false

     

       328
       328
       +
       	}

     

       329
       329
       +
       

     

       330
       330
       +
       	// Check if it's a blob type

     

       331
       331
       +
       	blobType, ok := blob["$type"].(string)

     

       332
       332
       +
       	if !ok || blobType != "blob" {

     

       333
       333
       +
       		return "", false

     

       334
       334
       +
       	}

     

       335
       335
       +
       

     

       336
       336
       +
       	// Extract ref

     

       337
       337
       +
       	ref, ok := blob["ref"].(map[string]interface{})

     

       338
       338
       +
       	if !ok {

     

       339
       339
       +
       		return "", false

     

       340
       340
       +
       	}

     

       341
       341
       +
       

     

       342
       342
       +
       	// Extract $link (the CID)

     

       343
       343
       +
       	link, ok := ref["$link"].(string)

     

       344
       344
       +
       	if !ok {

     

       345
       345
       +
       		return "", false

     

       346
       346
       +
       	}

     

       347
       347
       +
       

     

       348
       348
       +
       	return link, true

     

       349
       349
       +
       }

     

       350
       350
       +
       

     

       351
       351
       +
       // validateHandle checks if a handle matches expected format (!name@instance)

     

       352
       352
       +
       func validateHandle(handle string) bool {

     

       353
       353
       +
       	if !strings.HasPrefix(handle, "!") {

     

       354
       354
       +
       		return false

     

       355
       355
       +
       	}

     

       356
       356
       +
       

     

       357
       357
       +
       	parts := strings.Split(handle, "@")

     

       358
       358
       +
       	if len(parts) != 2 {

     

       359
       359
       +
       		return false

     

       360
       360
       +
       	}

     

       361
       361
       +
       

     

       362
       362
       +
       	return true

     

       363
       363
       +
       }