const { WebSocketServer } = require('ws');

function setupWebSocket(server) {
  const wss = new WebSocketServer({ server, path: '/ws' });

  wss.on('connection', (ws) => {
    console.log('[ws] Client connected');

    ws.on('message', (data) => {
      // TODO: handle watch/unwatch subscriptions from client
      const msg = JSON.parse(data);
      console.log('[ws] Received:', msg);
    });

    ws.on('close', () => {
      console.log('[ws] Client disconnected');
    });
  });

  // TODO: integrate chokidar file watching and broadcast changes
  // This will be implemented once the sync strategy is finalized.

  return wss;
}

module.exports = { setupWebSocket };