Refactor backend APIs to RESTful route patterns.

Align group and conversation handlers/services with path-based endpoints, and unify response/service error handling for related modules.

Made-with: Cursor

internal/service/group_service.go

@@ -25,23 +25,23 @@ const (
 
 // 群组服务错误定义
 var (
-	ErrGroupNotFound        = errors.New("群组不存在")
-	ErrNotGroupMember       = errors.New("不是群成员")
-	ErrNotGroupAdmin        = errors.New("不是群管理员")
-	ErrNotGroupOwner        = errors.New("不是群主")
-	ErrGroupFull            = errors.New("群已满")
-	ErrAlreadyMember        = errors.New("已经是群成员")
-	ErrCannotRemoveOwner    = errors.New("不能移除群主")
-	ErrCannotMuteOwner      = errors.New("不能禁言群主")
-	ErrMuted                = errors.New("你已被禁言")
-	ErrMuteAllEnabled       = errors.New("全员禁言中")
-	ErrCannotJoin           = errors.New("该群不允许加入")
-	ErrJoinRequestPending   = errors.New("加群申请已提交")
-	ErrGroupRequestNotFound = errors.New("加群请求不存在")
-	ErrGroupRequestHandled  = errors.New("该加群请求已处理")
-	ErrNotRequestTarget     = errors.New("不是邀请目标用户")
-	ErrNoEligibleInvitee    = errors.New("没有可邀请的用户")
-	ErrNotMutualFollow      = errors.New("仅支持邀请互相关注用户")
+	ErrGroupNotFound        = &ServiceError{Code: 404, Message: "群组不存在"}
+	ErrNotGroupMember       = &ServiceError{Code: 403, Message: "不是群成员"}
+	ErrNotGroupAdmin        = &ServiceError{Code: 403, Message: "不是群管理员"}
+	ErrNotGroupOwner        = &ServiceError{Code: 403, Message: "不是群主"}
+	ErrGroupFull            = &ServiceError{Code: 400, Message: "群已满"}
+	ErrAlreadyMember        = &ServiceError{Code: 400, Message: "已经是群成员"}
+	ErrCannotRemoveOwner    = &ServiceError{Code: 400, Message: "不能移除群主"}
+	ErrCannotMuteOwner      = &ServiceError{Code: 400, Message: "不能禁言群主"}
+	ErrMuted                = &ServiceError{Code: 403, Message: "你已被禁言"}
+	ErrMuteAllEnabled       = &ServiceError{Code: 403, Message: "全员禁言中"}
+	ErrCannotJoin           = &ServiceError{Code: 400, Message: "该群不允许加入"}
+	ErrJoinRequestPending   = &ServiceError{Code: 400, Message: "加群申请已提交"}
+	ErrGroupRequestNotFound = &ServiceError{Code: 404, Message: "加群请求不存在"}
+	ErrGroupRequestHandled  = &ServiceError{Code: 400, Message: "该加群请求已处理"}
+	ErrNotRequestTarget     = &ServiceError{Code: 400, Message: "不是邀请目标用户"}
+	ErrNoEligibleInvitee    = &ServiceError{Code: 400, Message: "没有可邀请的用户"}
+	ErrNotMutualFollow      = &ServiceError{Code: 400, Message: "仅支持邀请互相关注用户"}
 )
 
 // GroupService 群组服务接口

internal/service/post_service.go

@@ -411,6 +411,31 @@ func (s *PostService) IsFavorited(ctx context.Context, postID, userID string) bo
 	return s.postRepo.IsFavorited(postID, userID)
 }
 
+// GetPostInteractionStatus 批量获取帖子的交互状态（点赞、收藏）
+func (s *PostService) GetPostInteractionStatus(ctx context.Context, postIDs []string, userID string) (map[string]bool, map[string]bool, error) {
+	isLikedMap := make(map[string]bool)
+	isFavoritedMap := make(map[string]bool)
+
+	if userID == "" || len(postIDs) == 0 {
+		return isLikedMap, isFavoritedMap, nil
+	}
+
+	for _, postID := range postIDs {
+		isLikedMap[postID] = s.postRepo.IsLiked(postID, userID)
+		isFavoritedMap[postID] = s.postRepo.IsFavorited(postID, userID)
+	}
+
+	return isLikedMap, isFavoritedMap, nil
+}
+
+// GetPostInteractionStatusSingle 获取单个帖子的交互状态
+func (s *PostService) GetPostInteractionStatusSingle(ctx context.Context, postID, userID string) (isLiked, isFavorited bool) {
+	if userID == "" {
+		return false, false
+	}
+	return s.postRepo.IsLiked(postID, userID), s.postRepo.IsFavorited(postID, userID)
+}
+
 // IncrementViews 增加帖子观看量并同步到Gorse
 func (s *PostService) IncrementViews(ctx context.Context, postID, userID string) error {
 	if err := s.postRepo.IncrementViews(postID); err != nil {

internal/service/sticker_service.go

@@ -9,8 +9,8 @@ import (
 )
 
 var (
-	ErrStickerAlreadyExists = errors.New("sticker already exists")
-	ErrInvalidStickerURL    = errors.New("invalid sticker url")
+	ErrStickerAlreadyExists = &ServiceError{Code: 400, Message: "sticker already exists"}
+	ErrInvalidStickerURL    = &ServiceError{Code: 400, Message: "invalid sticker url"}
 )
 
 // StickerService 自定义表情服务接口