feat: implement removeTrack and deletePlaylist endpoints; add byIds method to trackController

src/controllers/playlistController.js

@@ -97,4 +97,54 @@ export const playlistController = {
       next(error);
     }
   },
+
+  async removeTrack(req, res, next) {
+    try {
+      const { playlistId } = req.params;
+      const { trackId } = req.body;
+
+      if (!trackId) {
+        return res
+          .status(400)
+          .json({ success: false, message: 'Track id is required' });
+      }
+
+      const playlist = await Playlist.findOneAndUpdate(
+        { _id: playlistId, user: req.userId },
+        { $pull: { tracks: trackId } },
+        { new: true }
+      ).populate('tracks').lean();
+
+      if (!playlist) {
+        return res
+          .status(404)
+          .json({ success: false, message: 'Playlist not found' });
+      }
+
+      return res.json({ success: true, data: playlist });
+    } catch (error) {
+      next(error);
+    }
+  },
+
+  async deletePlaylist(req, res, next) {
+    try {
+      const { playlistId } = req.params;
+
+      const playlist = await Playlist.findOneAndDelete({
+        _id: playlistId,
+        user: req.userId,
+      });
+
+      if (!playlist) {
+        return res
+          .status(404)
+          .json({ success: false, message: 'Playlist not found' });
+      }
+
+      return res.json({ success: true, message: 'Playlist deleted' });
+    } catch (error) {
+      next(error);
+    }
+  },
 };

src/controllers/trackController.js

@@ -2,6 +2,19 @@ import Track from '../models/Track.js';
 import User from '../models/User.js';
 
 export const trackController = {
+  async byIds(req, res, next) {
+    try {
+      const { ids } = req.body;
+      if (!Array.isArray(ids) || !ids.length) {
+        return res.json({ success: true, data: [] });
+      }
+      const tracks = await Track.find({ _id: { $in: ids } }).lean();
+      return res.json({ success: true, data: tracks });
+    } catch (error) {
+      next(error);
+    }
+  },
+
   async list(req, res, next) {
     try {
       const tracks = await Track.find().sort({ createdAt: -1 }).lean();

src/routes/playlists.js

@@ -14,5 +14,7 @@ router.post(
   playlistController.create
 );
 router.post('/:playlistId/tracks', auth, playlistController.addTrack);
+router.delete('/:playlistId/tracks', auth, playlistController.removeTrack);
+router.delete('/:playlistId', auth, playlistController.deletePlaylist);
 
 export default router;

src/routes/tracks.js

@@ -7,6 +7,7 @@ import { uploadTrackAssets } from '../utils/multer.js';
 const router = Router();
 
 router.get('/', trackController.list);
+router.post('/by-ids', trackController.byIds);
 router.get('/liked', auth, trackController.listLiked);
 router.post(
   '/',