import { Server } from 'socket.io';
import { port } from './config.js';
import * as events from './events.js';

const server = new Server(port);
console.log(`Listening on port ${port}`);

const rooms = {};

server.on('connection', (socket) => {
    const me = socket.id;

    console.log(`[CONNECT] New client connected with ID ${me}`);

    socket.on('join', async (data) => {
      const room = data.room;
      socket.join(room);

      if (!rooms[room]) {
        rooms[room] = {};
      }

      rooms[room].push(socket.id);

      const sockets = await server.in(data.url).fetchSockets()
      sockets.forEach((peer) => {
        if (peer.id !== me) {
          peer.emit(events.types.ADD_PEER, events.addPeer(me, false));
          socket.emit(events.types.ADD_PEER, events.addPeer(peer.id, true));
        }
      });
      console.log(`[CONNECT] Client ${me} added to room ${data.url}`);
    });

    socket.on('disconnecting', () => {

      for (const room in rooms) {
        if (rooms[room].includes(me)) {
          rooms[room] = rooms[room].filter(id => id !== me);
          socket.to(room).emit(events.types.REMOVE_PEER, events.removePeer(me));
          if (rooms[room].length === 0) {
            delete rooms[room];
          }
        }
      }
      console.log(`[DISCONNECT] Client ${me} has disconnected and has been removed from all rooms`);
    });

    socket.on('relayICECandidate', async (data) => {

        socket.to(data.peerId).emit(events.types.ICE_CANDIDATE_RECEIVED, events.ICECandidateReceived(me, data.candidate))
        console.log(`[RELAY_ICE_CANDIDATE] ICE candidate for client ${me} has been relayed to all peers`);
    });

    socket.on('relayOffer', async (data) => {

        socket.to(data.peerId).emit(events.types.OFFER_RECEIVED, events.offerReceived(me, data.offer))
        console.log(`[RELAY_OFFER] ICE offer for client ${me} has been relayed to all peers`);
    });

    socket.on('relayAnswer', async (data) => {

        socket.to(data.peerId).emit(events.types.ANSWER_RECEIVED, events.answerReceived(me, data.answer))
        console.log(`[RELAY_OFFER] ICE offer for client ${me} has been relayed to all peers`);
    });
});