feat: add profile update endpoint with avatar upload

src/controllers/authController.js

@@ -3,6 +3,7 @@ import {
   loginUser,
   refreshSession,
   registerUser,
+  updateProfile,
 } from '../services/authService.js';
 
 const accessCookieName = 'noctune_access';
@@ -92,4 +93,25 @@ export const authController = {
     clearAuthCookies(res);
     res.json({ success: true, data: { message: 'Logged out' } });
   },
+
+  async updateProfile(req, res, next) {
+    try {
+      const { name, username, email } = req.body;
+      const avatarFile = req.file;
+      const avatarUrl = avatarFile
+        ? `/uploads/avatars/${avatarFile.filename}`
+        : undefined;
+
+      const user = await updateProfile(req.userId, {
+        name,
+        username,
+        email,
+        avatarUrl,
+      });
+
+      return res.json({ success: true, data: { user } });
+    } catch (error) {
+      next(error);
+    }
+  },
 };

src/routes/auths.js

@@ -1,6 +1,7 @@
 import { Router } from 'express';
 import { authController } from '../controllers/authController.js';
 import { auth } from '../middlewares/auth.js';
+import { uploadAvatar } from '../utils/multer.js';
 
 const router = Router();
 
@@ -9,5 +10,6 @@ router.post('/login', authController.login);
 router.post('/refresh', authController.refresh);
 router.post('/logout', authController.logout);
 router.get('/me', auth, authController.me);
+router.put('/profile', auth, uploadAvatar.single('avatar'), authController.updateProfile);
 
 export default router;

src/services/authService.js

@@ -168,3 +168,30 @@ export const getSessionUser = async (userId) => {
 
   return user;
 };
+
+export const updateProfile = async (userId, { name, username, email, avatarUrl }) => {
+  const updateFields = {};
+  if (name !== undefined) updateFields.name = name.trim();
+  if (username !== undefined) updateFields.username = username.trim().toLowerCase();
+  if (email !== undefined) updateFields.email = email.trim().toLowerCase();
+  if (avatarUrl !== undefined) updateFields.avatarUrl = avatarUrl;
+
+  if (updateFields.username || updateFields.email) {
+    const existing = await User.findOne({
+      _id: { $ne: userId },
+      $or: [
+        ...(updateFields.username ? [{ username: updateFields.username }] : []),
+        ...(updateFields.email ? [{ email: updateFields.email }] : []),
+      ],
+    }).lean();
+
+    if (existing) {
+      throw createError(409, 'Username or email already in use');
+    }
+  }
+
+  await User.updateOne({ _id: userId }, { $set: updateFields });
+  const user = await getPublicUser(userId);
+
+  return user;
+};

src/utils/multer.js

@@ -5,6 +5,7 @@ import multer from 'multer';
 const coversDir = path.join(process.cwd(), 'uploads', 'covers');
 const audioDir = path.join(process.cwd(), 'uploads', 'audio');
 const playlistCoversDir = path.join(process.cwd(), 'uploads', 'playlists');
+const avatarsDir = path.join(process.cwd(), 'uploads', 'avatars');
 
 if (!fs.existsSync(coversDir)) {
   fs.mkdirSync(coversDir, { recursive: true });
@@ -18,6 +19,10 @@ if (!fs.existsSync(playlistCoversDir)) {
   fs.mkdirSync(playlistCoversDir, { recursive: true });
 }
 
+if (!fs.existsSync(avatarsDir)) {
+  fs.mkdirSync(avatarsDir, { recursive: true });
+}
+
 const storage = multer.diskStorage({
   destination: (req, file, cb) => {
     if (file.fieldname === 'cover') {
@@ -32,6 +37,10 @@ const storage = multer.diskStorage({
       return cb(null, playlistCoversDir);
     }
 
+    if (file.fieldname === 'avatar') {
+      return cb(null, avatarsDir);
+    }
+
     return cb(new Error('Invalid upload field'));
   },
   filename: (req, file, cb) => {
@@ -77,6 +86,13 @@ const imageFilter = (req, file, cb) => {
 
     return cb(new Error('Invalid upload field'));
   };
+};
+
+export const uploadAvatar = multer({
+  storage,
+  fileFilter: imageFilter,
+  limits: { fileSize: 5 * 1024 * 1024 },
+});
 
 export const uploadTrackAssets = multer({
   storage,