[BE-API-027] be-api: Implement user liked tracks endpoint

- Standardized GetUserLikedTracks handler to use RespondSuccess/RespondWithAppError
- Added limit validation (max 100)
- Moved route from setupTrackRoutes to setupUserRoutes in protected group
- Handler uses existing TrackLikeService methods
- Handler returns paginated results with tracks, total, limit, and offset
- Handler uses standard API response format

Phase: PHASE-2
Priority: P1
Progress: 34/267 (12.7%)

VEZA_COMPLETE_MVP_TODOLIST.json

@@ -2282,7 +2282,18 @@
       "description": "GET /api/v1/users/:id/likes returns all tracks liked by user",
       "owner": "backend",
       "estimated_hours": 2,
-      "status": "todo",
+      "status": "completed",
+      "completion": {
+        "completed_at": "2025-12-23T10:05:30Z",
+        "actual_hours": 0.5,
+        "commits": [],
+        "files_changed": [
+          "veza-backend-api/internal/core/track/handler.go",
+          "veza-backend-api/internal/api/router.go"
+        ],
+        "notes": "Standardized GetUserLikedTracks handler to use RespondSuccess and RespondWithAppError. Handler already existed and was working correctly. Added limit validation (max 100). Moved route from setupTrackRoutes to setupUserRoutes in protected group. Handler uses existing TrackLikeService.GetUserLikedTracks and GetUserLikedTracksCount methods. Handler returns paginated results with tracks, total, limit, and offset. Handler uses standard API response format.",
+        "issues_encountered": []
+      },
       "files_involved": [],
       "implementation_steps": [
         {

veza-backend-api/internal/api/router.go

@@ -414,6 +414,31 @@ func (r *APIRouter) setupUserRoutes(router *gin.RouterGroup) {
 			avatarHandler := handlers.NewAvatarHandler(imageService, userService)
 			protected.POST("/:userId/avatar", avatarHandler.UploadAvatar)   // BE-API-021: Upload avatar endpoint
 			protected.DELETE("/:userId/avatar", avatarHandler.DeleteAvatar) // BE-API-022: Delete avatar endpoint
+
+			// BE-API-027: User liked tracks endpoint
+			// Initialize TrackLikeService and minimal TrackHandler for user liked tracks
+			uploadDir := r.config.UploadDir
+			if uploadDir == "" {
+				uploadDir = "uploads/tracks"
+			}
+			likeService := services.NewTrackLikeService(r.db.GormDB, r.logger)
+			trackService := trackcore.NewTrackService(r.db.GormDB, r.logger, uploadDir)
+			trackUploadService := services.NewTrackUploadService(r.db.GormDB, r.logger)
+			var redisClient *redis.Client
+			if r.config != nil {
+				redisClient = r.config.RedisClient
+			}
+			chunksDir := uploadDir + "/chunks"
+			chunkService := services.NewTrackChunkService(chunksDir, redisClient, r.logger)
+			streamService := services.NewStreamService(r.config.StreamServerURL, r.logger)
+			trackHandlerForLikes := trackcore.NewTrackHandler(
+				trackService,
+				trackUploadService,
+				chunkService,
+				likeService,
+				streamService,
+			)
+			protected.GET("/:id/likes", trackHandlerForLikes.GetUserLikedTracks) // BE-API-027: Get user liked tracks endpoint
 		}
 	}
 }
@@ -605,11 +630,7 @@ func (r *APIRouter) setupTrackRoutes(router *gin.RouterGroup) {
 
 	// Note: Internal routes are now set up in setupInternalRoutes() to avoid
 	// path prefix issues when setupTrackRoutes is called with a RouterGroup
-
-	users := router.Group("/users")
-	{
-		users.GET("/:id/likes", trackHandler.GetUserLikedTracks)
-	}
+	// BE-API-027: User liked tracks route moved to setupUserRoutes
 }
 
 // setupChatRoutes configure les routes de chat

veza-backend-api/internal/core/track/handler.go

@@ -1312,18 +1312,18 @@ func (h *TrackHandler) GetTrackLikes(c *gin.Context) {
 }
 
 // GetUserLikedTracks gère la récupération des tracks likés par un utilisateur
+// GET /api/v1/users/:id/likes
+// BE-API-027: Implement user liked tracks endpoint
 func (h *TrackHandler) GetUserLikedTracks(c *gin.Context) {
 	userIDStr := c.Param("id")
 	if userIDStr == "" {
-		// MOD-P2-003: Utiliser AppError au lieu de gin.H
-		h.respondWithError(c, http.StatusBadRequest, "user id is required")
+		handlers.RespondWithAppError(c, apperrors.NewValidationError("user id is required"))
 		return
 	}
 
 	userID, err := uuid.Parse(userIDStr)
 	if err != nil {
-		// MOD-P2-003: Utiliser AppError au lieu de gin.H
-		h.respondWithError(c, http.StatusBadRequest, "invalid user id")
+		handlers.RespondWithAppError(c, apperrors.NewValidationError("invalid user id"))
 		return
 	}
 
@@ -1331,6 +1331,10 @@ func (h *TrackHandler) GetUserLikedTracks(c *gin.Context) {
 	limit := 20 // default
 	if limitStr := c.Query("limit"); limitStr != "" {
 		if parsedLimit, err := strconv.Atoi(limitStr); err == nil && parsedLimit > 0 {
+			// Limiter à un maximum raisonnable
+			if parsedLimit > 100 {
+				parsedLimit = 100
+			}
 			limit = parsedLimit
 		}
 	}
@@ -1344,19 +1348,18 @@ func (h *TrackHandler) GetUserLikedTracks(c *gin.Context) {
 
 	tracks, err := h.likeService.GetUserLikedTracks(c.Request.Context(), userID, limit, offset)
 	if err != nil {
-		// MOD-P2-003: Utiliser AppError au lieu de gin.H
-		h.respondWithError(c, http.StatusInternalServerError, err.Error())
+		handlers.RespondWithAppError(c, apperrors.Wrap(apperrors.ErrCodeInternal, "failed to get user liked tracks", err))
 		return
 	}
 
 	total, err := h.likeService.GetUserLikedTracksCount(c.Request.Context(), userID)
 	if err != nil {
-		// MOD-P2-003: Utiliser AppError au lieu de gin.H
-		h.respondWithError(c, http.StatusInternalServerError, err.Error())
+		handlers.RespondWithAppError(c, apperrors.Wrap(apperrors.ErrCodeInternal, "failed to get user liked tracks count", err))
 		return
 	}
 
-	c.JSON(http.StatusOK, gin.H{
+	// BE-API-027: Standardize response format
+	handlers.RespondSuccess(c, http.StatusOK, gin.H{
 		"tracks": tracks,
 		"total":  total,
 		"limit":  limit,