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[rbdr/junction] / extension / junction.js

const io = require('socket.io-client');

const internals = {

  promisesSupported: !!(window.browser),
  isInCallState: false,

  icons: {
    call: {
      16: 'icons/action-16.png',
      32: 'icons/action-32.png'
    },

    hangUp: {
      16: 'icons/hang_up-16.png',
      32: 'icons/hang_up-32.png'
    }
  },

  socket: null,

  peers: 0,

  onClick() {
    if (internals.isInCall()) {
      return internals.hangUp();
    }

    return internals.joinAudioCall();
  },

  async joinAudioCall() {

    internals.isInCallState = true;
    internals.setIcon('hangUp');
    const activeTabs = await internals.getActiveTabs();

    const socketUrl = 'http://unlimited.pizza:8000/';
    const currentUrl = activeTabs[0].url;

    this.socket = io(socketUrl);

    var that = this;

    this.socket.on('connect', function() {
      console.log("Connected to signaling server");

      that.socket.emit('join', {
        'url': currentUrl,
      });
    });

    this.socket.on('disconnect', function() {
      console.log("disconnected from signaling server");
    });

    this.socket.on('addPeer', function(data) {
      console.log(data);
      that.peers++;
      console.log(`There are now ${that.peers} participants`);
    });

    this.socket.on('removePeer', function() {
      that.peers--;
      console.log(`There are now ${that.peers} participants`);
    });

    console.log(activeTabs[0].url); // placeholder while we connect backend.
    internals.createAudioElement(internals.getRoot().runtime.getURL('sounds/tada.wav'));
  },

  hangUp() {
    this.socket.close();



    document.querySelectorAll('audio').forEach((audioElement) => audioElement.remove());
    internals.setIcon('call');
    internals.isInCallState = false;
  },

  createAudioElement(source, type = 'audio/wav') {

    const audioElement = document.createElement('audio');
    audioElement.src = source;
    audioElement.autoplay = 'autoplay';
    audioElement.type = type;
    document.querySelector('body').appendChild(audioElement);
  },

  isInCall() {
    return internals.isInCallState; // this should be replaced with actually checking the built stuff
  },

  setIcon(iconSet) {

    internals.getRoot().browserAction.setIcon({
      path: internals.icons[iconSet]
    });
  },

  getRoot() {

    return window.browser || window.chrome;
  },

  // Chrome doesn't yet implement the promise based tabs.query :'(

  getActiveTabs() {

    const query = {
      currentWindow: true,
      active: true
    };

    if (internals.promisesSupported) {
      return internals.getRoot().tabs.query(query);
    }

    return new Promise((resolve, reject) => {

      internals.getRoot().tabs.query(query, (tabs) => {

        return resolve(tabs);
      });
    });
  },
};

internals.getRoot().browserAction.onClicked.addListener(internals.onClick);