add unsubscribe and fix args to id

router/playlist_subscribe.js

@@ -5,12 +5,13 @@ const { createWebAPIRequest } = require("../util/util");
 router.get("/", (req, res) => {
   const cookie = req.get("Cookie") ? req.get("Cookie") : "";
   const data = {
-    id: req.query.playlist,
+    id: req.query.id,
     csrf_token: ""
   };
+  const action = req.query.t == 1 ? "subscribe" : "unsubscribe";
   createWebAPIRequest(
     "music.163.com",
-    "/weapi/playlist/subscribe",
+    `/weapi/playlist/${action}`,
     "POST",
     data,
     cookie,

router/send_playlist.js

@@ -6,7 +6,7 @@ router.get("/", (req, res) => {
   const cookie = req.get("Cookie") ? req.get("Cookie") : "";
   const user_ids = req.query.user_ids;
   const data = {
-    id: req.query.playlist,
+    id: req.query.id,
     type: "playlist",
     msg: req.query.msg,
     userIds: user_ids,