Refactor

gambling.js

@@ -238,9 +238,11 @@ app.get("/lobby/join", authenticateToken, async (req, res) => {
 app.delete("/lobby/leave", authenticateToken, async (req, res) => {
     const lobbyId = req.query.lobbyId;
     const username = req.query.username;
+
     if (!lobbyId || !username) {
         return res.status(400).json({ error: "Missing lobbyId or username" });
     }
+
     if (lobbyId in playerMap) {
         const index = playerMap[lobbyId].indexOf(username);
         if (index > -1) {
@@ -250,9 +252,11 @@ app.delete("/lobby/leave", authenticateToken, async (req, res) => {
             return res.status(404).json({ error: "User not in lobby" });
         }
     }
+
     res.status(404).json({ error: "Lobby not found" });
 });
 
+
 app.get("/lobby/players", authenticateToken, async (req, res) => {
     let lobbyId = req.query.lobbyId;
     let players = playerMap[lobbyId] || [];