fix: fix SPOTIFY_REDIRECT_URI in backend controller (#3)

Author: NapoSky

backend/src/controllers/spotifyController.js

@@ -30,7 +30,7 @@ async function handleCallback(req, res) {
     const spotifyApi = new SpotifyWebApi({
       clientId: spotifyConfig.clientId,
       clientSecret: spotifyConfig.clientSecret,
-      redirectUri: `${process.env.BASE_URL || 'http://localhost:3001'}/api/spotify/callback`
+      redirectUri: process.env.SPOTIFY_REDIRECT_URI || 'http://localhost:3001/api/spotify/callback'
     });
 
     // Échanger le code contre des tokens
@@ -162,4 +162,4 @@ function verifyRoomAndSpotify(req, res) {
   }
 
   return Room.get(roomCode);
-}
+}