feat: add comments

internal/service/social_service.go

@@ -35,11 +35,12 @@ type PostService struct {
 	r2       *repository.R2
 	likes    *repository.LikeRepo
 	mentions *repository.MentionRepo
+	comments *repository.CommentRepo
 	notif    *NotificationService // optional; set via SetNotifier
 }
 
-func NewPostService(posts *repository.PostRepo, r2 *repository.R2, likes *repository.LikeRepo, mentions *repository.MentionRepo) *PostService {
-	return &PostService{posts: posts, r2: r2, likes: likes, mentions: mentions}
+func NewPostService(posts *repository.PostRepo, r2 *repository.R2, likes *repository.LikeRepo, mentions *repository.MentionRepo, comments *repository.CommentRepo) *PostService {
+	return &PostService{posts: posts, r2: r2, likes: likes, mentions: mentions, comments: comments}
 }
 
 // SetNotifier wires the notification seam after construction (the
@@ -97,6 +98,9 @@ func (s *PostService) Get(ctx context.Context, id, viewerID string) (*model.Post
 	if err := s.mentions.HydrateCounts(ctx, []*model.Post{p}); err != nil {
 		return nil, err
 	}
+	if err := s.comments.HydratePinned(ctx, viewerID, []*model.Post{p}); err != nil {
+		return nil, err
+	}
 	return p, nil
 }
 
@@ -202,9 +206,24 @@ func (s *PostService) ListByHandle(ctx context.Context, handle, viewerID string,
 	if err := s.hydrateMentionsSlice(ctx, posts); err != nil {
 		return nil, 0, err
 	}
+	if err := s.hydratePinnedSlice(ctx, viewerID, posts); err != nil {
+		return nil, 0, err
+	}
 	return posts, total, nil
 }
 
+// hydratePinnedSlice fills PinnedComment on a value slice.
+func (s *PostService) hydratePinnedSlice(ctx context.Context, viewerID string, posts []model.Post) error {
+	if len(posts) == 0 {
+		return nil
+	}
+	ptrs := make([]*model.Post, len(posts))
+	for i := range posts {
+		ptrs[i] = &posts[i]
+	}
+	return s.comments.HydratePinned(ctx, viewerID, ptrs)
+}
+
 // hydrateLikesSlice fills LikesCount + ViewerHasLiked on a value slice.
 func (s *PostService) hydrateLikesSlice(ctx context.Context, viewerID string, posts []model.Post) error {
 	if len(posts) == 0 {
@@ -347,6 +366,9 @@ func (s *PostService) ListMine(ctx context.Context, userID string, limit, offset
 	if err := s.hydrateMentionsSlice(ctx, posts); err != nil {
 		return nil, 0, err
 	}
+	if err := s.hydratePinnedSlice(ctx, userID, posts); err != nil {
+		return nil, 0, err
+	}
 	return posts, total, nil
 }