添加歌曲封面接口

internal/controller/song.go

@@ -41,3 +41,18 @@ func (c *SongController) Stream(w http.ResponseWriter, r *http.Request) {
 
 	http.ServeFile(w, r, mediaFile.Path)
 }
+
+func (c *SongController) Cover(w http.ResponseWriter, r *http.Request) {
+	paramID := chi.URLParam(r, "id")
+	id, err := strconv.Atoi(paramID)
+	if err != nil {
+		http.Error(w, "无效的歌曲 ID", http.StatusBadRequest)
+		return
+	}
+	coverPath, err := c.service.GetCover(id)
+	if err != nil {
+		http.Error(w, "获取封面异常", http.StatusNotFound)
+		return
+	}
+	http.ServeFile(w, r, coverPath)
+}