Add configurable library path with settings API and UI

src/routes/settings.js

@@ -0,0 +1,64 @@
+import express from 'express';
+import fs from 'fs/promises';
+import path from 'path';
+
+const router = express.Router();
+
+const CONFIG_FILE = path.join(process.cwd(), 'config.json');
+
+// Default config
+const DEFAULT_CONFIG = {
+  libraryPath: './audio_library',
+  port: 3000
+};
+
+// Load config
+async function loadConfig() {
+  try {
+    const data = await fs.readFile(CONFIG_FILE, 'utf-8');
+    return { ...DEFAULT_CONFIG, ...JSON.parse(data) };
+  } catch (error) {
+    return DEFAULT_CONFIG;
+  }
+}
+
+// Save config
+async function saveConfig(config) {
+  await fs.writeFile(CONFIG_FILE, JSON.stringify(config, null, 2));
+}
+
+// Get settings
+router.get('/', async (req, res) => {
+  try {
+    const config = await loadConfig();
+    res.json(config);
+  } catch (error) {
+    res.status(500).json({ error: error.message });
+  }
+});
+
+// Update settings
+router.patch('/', async (req, res) => {
+  try {
+    const config = await loadConfig();
+    const { libraryPath } = req.body;
+    
+    if (libraryPath) {
+      // Validate path exists
+      try {
+        await fs.access(libraryPath);
+        config.libraryPath = libraryPath;
+      } catch (error) {
+        return res.status(400).json({ error: 'Library path does not exist' });
+      }
+    }
+    
+    await saveConfig(config);
+    res.json({ success: true, config });
+  } catch (error) {
+    res.status(500).json({ error: error.message });
+  }
+});
+
+export default router;
+export { loadConfig };

src/server.js

@@ -7,13 +7,18 @@ import playlistsRouter from './routes/playlists.js';
 import albumsRouter from './routes/albums.js';
 import uploadRouter from './routes/upload.js';
 import subsonicRouter from './routes/subsonic.js';
+import settingsRouter from './routes/settings.js';
 import { initDatabase } from './database/db.js';
+import { loadConfig } from './routes/settings.js';
 
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
 
 const app = express();
-const PORT = process.env.PORT || 3000;
+
+// Load config
+const config = await loadConfig();
+const PORT = process.env.PORT || config.port || 3000;
 
 // Middleware
 app.use(cors());
@@ -27,6 +32,7 @@ app.use('/api/tracks', tracksRouter);
 app.use('/api/playlists', playlistsRouter);
 app.use('/api/albums', albumsRouter);
 app.use('/api/upload', uploadRouter);
+app.use('/api/settings', settingsRouter);
 
 // Subsonic API
 app.use('/rest', subsonicRouter);
@@ -34,8 +40,11 @@ app.use('/rest', subsonicRouter);
 // Serve static files
 app.use(express.static('public'));
 
-// Serve audio files
-app.use('/audio', express.static(path.join(process.cwd(), 'audio_library')));
+// Serve audio files (use configured path)
+const libraryPath = path.isAbsolute(config.libraryPath) 
+  ? config.libraryPath 
+  : path.join(process.cwd(), config.libraryPath);
+app.use('/audio', express.static(libraryPath));
 app.use('/artwork', express.static(path.join(process.cwd(), 'artwork')));
 
 // Health check
@@ -45,5 +54,6 @@ app.get('/health', (req, res) => {
 
 app.listen(PORT, () => {
   console.log(`🎵 CarPlay Audio Server running on port ${PORT}`);
-  console.log(`📁 Audio library: ${path.join(process.cwd(), 'audio_library')}`);
+  console.log(`📁 Audio library: ${libraryPath}`);
+  console.log(`🌐 Admin panel: http://localhost:${PORT}`);
 });