Enhance FeedService with reaction handling and post sorting

- Introduced a ReactionService to manage like counts for posts, improving engagement metrics.
- Implemented sorting logic for posts based on likes and timestamps, enhancing the visibility of popular content.
- Added recursive sorting for replies to maintain order within threads, ensuring a coherent display of discussions.

These changes contribute to a more dynamic and user-friendly experience within the NostrFeed module.

src/modules/nostr-feed/services/FeedService.ts

@@ -46,6 +46,7 @@ export class FeedService extends BaseService {
 
   protected relayHub: any = null
   protected visibilityService: any = null
+  protected reactionService: any = null
 
   // Event ID tracking for deduplication
   private seenEventIds = new Set<string>()
@@ -70,9 +71,11 @@ export class FeedService extends BaseService {
 
     this.relayHub = injectService(SERVICE_TOKENS.RELAY_HUB)
     this.visibilityService = injectService(SERVICE_TOKENS.VISIBILITY_SERVICE)
+    this.reactionService = injectService(SERVICE_TOKENS.REACTION_SERVICE)
 
     console.log('FeedService: RelayHub injected:', !!this.relayHub)
     console.log('FeedService: VisibilityService injected:', !!this.visibilityService)
+    console.log('FeedService: ReactionService injected:', !!this.reactionService)
 
     if (!this.relayHub) {
       throw new Error('RelayHub service not available')
@@ -437,8 +440,6 @@ export class FeedService extends BaseService {
           currentPost.depth = (parentPost.depth || 0) + 1
           parentPost.replies = parentPost.replies || []
           parentPost.replies.push(currentPost)
-          // Sort replies by timestamp (oldest first for better reading flow)
-          parentPost.replies.sort((a, b) => a.created_at - b.created_at)
         } else {
           // Parent not found, treat as root post
           rootPosts.push(currentPost)
@@ -449,12 +450,63 @@ export class FeedService extends BaseService {
       }
     })
 
-    // Sort root posts by newest first
+    // Sort posts using like count and timestamp
-    rootPosts.sort((a, b) => b.created_at - a.created_at)
+    this.sortPostsByLikesAndTime(rootPosts)
+
+    // Sort all reply threads recursively
+    rootPosts.forEach(post => this.sortRepliesRecursively(post))
 
     return rootPosts
   }
 
+  /**
+   * Sort posts by likes first, then by time (newest first)
+   */
+  private sortPostsByLikesAndTime(posts: FeedPost[]): void {
+    posts.sort((a, b) => {
+      // Get like counts from reaction service if available
+      const aLikes = this.getLikeCount(a.id)
+      const bLikes = this.getLikeCount(b.id)
+
+      // Sort by likes first (descending)
+      if (aLikes !== bLikes) {
+        return bLikes - aLikes
+      }
+
+      // If likes are equal, sort by time (newest first)
+      return b.created_at - a.created_at
+    })
+  }
+
+  /**
+   * Recursively sort replies within each thread
+   */
+  private sortRepliesRecursively(post: FeedPost): void {
+    if (post.replies && post.replies.length > 0) {
+      // Sort replies by likes first, then time
+      this.sortPostsByLikesAndTime(post.replies)
+
+      // Recursively sort nested replies
+      post.replies.forEach(reply => this.sortRepliesRecursively(reply))
+    }
+  }
+
+  /**
+   * Get like count for a post from ReactionService
+   */
+  private getLikeCount(postId: string): number {
+    try {
+      if (this.reactionService && typeof this.reactionService.getEventReactions === 'function') {
+        const reactions = this.reactionService.getEventReactions(postId)
+        return reactions?.likes || 0
+      }
+    } catch (error) {
+      // Silently fail if reaction service is not available
+      console.debug('FeedService: Could not get like count for post', postId, error)
+    }
+    return 0
+  }
+
   /**
    * Get filtered posts for specific feed type
    */