Add detailed logging for Subsonic authentication debugging

src/routes/subsonic.js

@@ -14,14 +14,18 @@ const USERS = {
 
 // Middleware to handle Subsonic authentication
 function authenticateSubsonic(req, res, next) {
-  const { u: username, p: password, t: token, s: salt } = req.query;
+  const { u: username, p: password, t: token, s: salt, c: client } = req.query;
+
+  console.log(`🔐 Subsonic auth attempt - User: ${username}, Client: ${client || 'unknown'}`);
 
   if (!username) {
+    console.log('❌ Auth failed: No username provided');
     return sendSubsonicError(res, 10, 'Required parameter is missing');
   }
 
   const user = USERS[username];
   if (!user) {
+    console.log(`❌ Auth failed: User '${username}' not found`);
     return sendSubsonicError(res, 40, 'Wrong username or password');
   }
 
@@ -32,18 +36,24 @@ function authenticateSubsonic(req, res, next) {
     // Token-based auth: token = md5(password + salt)
     const expectedToken = crypto.createHash('md5').update(user.password + salt).digest('hex');
     authenticated = token === expectedToken;
+    console.log(`🔑 Token auth: ${authenticated ? 'SUCCESS' : 'FAILED'}`);
   } else if (password) {
     // Plain password or enc: prefix
     const plainPassword = password.startsWith('enc:') 
       ? Buffer.from(password.slice(4), 'hex').toString() 
       : password;
     authenticated = plainPassword === user.password;
+    console.log(`🔑 Password auth: ${authenticated ? 'SUCCESS' : 'FAILED'}`);
+  } else {
+    console.log('❌ Auth failed: No password or token provided');
   }
 
   if (!authenticated) {
+    console.log('❌ Authentication failed');
     return sendSubsonicError(res, 40, 'Wrong username or password');
   }
 
+  console.log('✅ Authentication successful');
   req.subsonicUser = username;
   next();
 }
@@ -66,8 +76,9 @@ function sendSubsonicError(res, code, message) {
   res.type('application/xml').send(xml);
 }
 
-// Ping - test connectivity
+// Ping - test connectivity (no auth required for testing)
 router.get('/ping.view', (req, res) => {
+  console.log('📡 Ping received');
   sendSubsonicResponse(res, '');
 });