playlist batch operation

router/playlist_tracks.js

-const express = require('express')
-const router = express()
-const { createWebAPIRequest } = require('../util/util')
+const express = require("express");
+const router = express();
+const { createWebAPIRequest } = require("../util/util");
 //收藏单曲到歌单，从歌单删除歌曲 op=del,add;pid=歌单id,tracks=歌曲id
-router.get('/', (req, res) => {
-  const op = req.query.op
-  const pid = req.query.pid
-  const tracks = req.query.tracks
-  const cookie = req.get('Cookie') ? req.get('Cookie') : ''
+router.get("/", (req, res) => {
+  const op = req.query.op;
+  const pid = req.query.pid;
+  // const tracks = req.query.tracks.split(',')
+  const tracks = req.query.tracks;
+  const cookie = req.get("Cookie") ? req.get("Cookie") : "";
   // console.log('COOKIESS', cookie)
   const data = {
     op: op,
     pid: pid,
-    tracks: tracks,
-    trackIds: JSON.stringify([tracks]),
-    csrf_token: ''
-  }
+    // tracks: (tracks.length == 1) ? tracks[0] : Array.apply(null,{length:tracks.length}).map(()=>({})).join(','),
+    // trackIds: (tracks.length == 1) ? JSON.stringify(tracks) : `[${tracks.join(',')}]`
+    trackIds: `[${tracks}]`,
+    csrf_token: ""
+  };
   createWebAPIRequest(
-    'music.163.com',
-    '/weapi/playlist/manipulate/tracks',
-    'POST',
+    "music.163.com",
+    "/weapi/playlist/manipulate/tracks",
+    "POST",
     data,
     cookie,
     music_req => res.send(music_req),
-    err => res.status(502).send('fetch error')
-  )
-})
+    err => res.status(502).send("fetch error")
+  );
+});
 
-module.exports = router
+module.exports = router;