class WebRTC extends AbstractConnector {
  constructor (y, options) {
    if(options === undefined){
      throw new Error("Options must not be undefined!");
    }
    if(options.room == null) {
      throw new Error("You must define a room name!");
    }
    options.role = "slave";
    super(y, options);

    var room = options.room;

    var webrtcOptions = {
      url: options.url || "https://yatta.ninja:8888",
      room: options.room
    };

    var swr = new SimpleWebRTC(webrtcOptions); //eslint-disable-line no-undef
    this.swr = swr;
    var self = this;

    swr.once("connectionReady", function(userId){
      // SimpleWebRTC (swr) is initialized
      swr.joinRoom(room);

      swr.once("joinedRoom", function(){
        self.setUserId(userId);
        /*
        var i;
        // notify the connector class about all the users that already
        // joined the session
        for(i in self.swr.webrtc.peers){
          self.userJoined(self.swr.webrtc.peers[i].id, "master");
        }*/
        swr.on("channelMessage", function(peer, room_, message){
          // The client received a message
          // Check if the connector is already initialized,
          // only then forward the message to the connector class
          if(message.type != null ){
            self.receiveMessage(peer.id, message.payload);
          }
        });
      });

      swr.on("createdPeer", function(peer){
        // a new peer/client joined the session.
        // Notify the connector class, if the connector
        // is already initialized
        self.userJoined(peer.id, "master");
      });

      swr.on("peerStreamRemoved", function(peer){
        // a client left the session.
        // Notify the connector class, if the connector
        // is already initialized
        self.userLeft(peer.id);
      });
    });
  }
  send (uid, message) {
    var self = this;
    // we have to make sure that the message is sent under all circumstances
    var send = function(){
      // check if the clients still exists
      var peer = self.swr.webrtc.getPeers(uid)[0];
      var success;
      if(peer){
        // success is true, if the message is successfully sent
        success = peer.sendDirectly("simplewebrtc", "yjs", message);
      }
      if(!success){
        // resend the message if it didn't work
        setTimeout(send, 500);
      }
    };
    // try to send the message
    send();
  }
  broadcast (message) {
    this.swr.sendDirectlyToAll("simplewebrtc", "yjs", message);
  }
}

Y.WebRTC = WebRTC;