add get api for random album covers

router/album.js

@@ -51,6 +51,12 @@ router.route("/filter/:term")
       res.json(result).status(200).end();
     });
   })
+router.route("/random/:count")
+  .get(passport.authenticate("jwt", { session: false }), (req, res) => {
+    database.albums.randomCovers(req.params.count, 64, (result) => {
+      res.json(result).status(200).end();
+    });
+  })
 
 router.route("/:id")
   .get(checkGuest, (req, res) => {