const express = require('express');
const http = require('http');
const WebSocket = require('ws');

const app = express();
const server = http.createServer(app);
const wss = new WebSocket.Server({ server });

const connections = new Set();
var playerCount = 0;

app.get('/', (req, res) => {
  res.send('Grand Tabernacle Auto VI');
});

wss.on('connection', (socket) => {
  connections.add(socket);

  socket.on('message', (message) => {
    message = JSON.parse(message);
    if (message.type == "connect") {
      var obj = {
        id: playerCount,
        x: 0,
        y: 0
      }
      socket.send(JSON.stringify(obj));
      playerCount++;
    } else if (message.type == "ping") {
      socket.send("pong");
    } else {
      broadcast(JSON.stringify(message));
    }
  });

  socket.on('close', () => {
    connections.delete(socket);
  });
});

function broadcast(message) {
  connections.forEach((socket) => {
    if (socket.readyState === WebSocket.OPEN) {
      socket.send(message);
    }
  });
}

const PORT = process.env.PORT || 3000;

server.listen(PORT, () => {
  console.log(`Serveur WebSocket écoutant sur le port ${PORT}`);
});