feat: add Album model, artist/search/upload controllers, requireArtist middleware

src/controllers/uploadController.js

@@ -0,0 +1,62 @@
+import fs from 'fs';
+import Track from '../models/Track.js';
+
+const removeFile = (file) => {
+  if (!file?.path) {
+    return;
+  }
+
+  fs.unlink(file.path, () => {});
+};
+
+export const uploadController = {
+  async uploadTrack(req, res, next) {
+    try {
+      if (!req.userId) {
+        removeFile(req.files?.cover?.[0]);
+        removeFile(req.files?.audio?.[0]);
+        return res.status(401).json({ success: false, message: 'Authentication required to upload' });
+      }
+
+      const { title, artist, album, genre } = req.body;
+
+      if (!title || !artist || !album || !genre) {
+        removeFile(req.files?.cover?.[0]);
+        removeFile(req.files?.audio?.[0]);
+        return res.status(400).json({ success: false, message: 'All fields are required' });
+      }
+
+      const coverFile = req.files?.cover?.[0];
+      const audioFile = req.files?.audio?.[0];
+
+      if (!coverFile || !audioFile) {
+        removeFile(coverFile);
+        removeFile(audioFile);
+        return res.status(400).json({ success: false, message: 'Cover and audio files are required' });
+      }
+
+      if (coverFile.size > 5 * 1024 * 1024) {
+        removeFile(coverFile);
+        removeFile(audioFile);
+        return res.status(400).json({ success: false, message: 'Cover image must be 5MB or smaller' });
+      }
+
+      const coverUrl = `/uploads/covers/${coverFile.filename}`;
+      const audioUrl = `/uploads/audio/${audioFile.filename}`;
+
+      const track = await Track.create({
+        title,
+        artist,
+        album,
+        genre,
+        coverUrl,
+        audioUrl,
+        createdBy: req.userId,
+      });
+
+      return res.json({ success: true, data: track });
+    } catch (error) {
+      return next(error);
+    }
+  },
+};