// Generated by CoffeeScript 1.12.7
(function() {
  var bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; };
  Tram.WebRTCInterface = (function() {
    WebRTCInterface.prototype.lstream = null;
    WebRTCInterface.prototype.rstream = null;
    function WebRTCInterface(contact) {
      this.contact = contact;
      this.fail = bind(this.fail, this);
      this.connect = bind(this.connect, this);
      this.peerJid = this.contact.get('jid');
    }
    WebRTCInterface.prototype.init = function(initiator, constraints) {
      this.initiator = initiator;
      if (constraints.audio || constraints.video) {
        return navigator.mediaDevices.getUserMedia(constraints).then(this.connect, this.fail);
      } else {
        return this.connect();
      }
    };
    WebRTCInterface.prototype.connect = function(stream) {
      this.call = calls.add({
        jid: this.peerJid,
        contact: this.contact
      });
      this.pc = new RTCPeerConnection({
        iceServers: Tram.config.iceServers
      });
      if (stream != null) {
        this.lstream = stream;
        this.pc.addStream(stream);
        this.call.set('local/stream', stream);
      }
      this.pc.onicecandidate = (function(_this) {
        return function(event) {
          if (event.candidate) {
            return _this.sendPayload(event.candidate, 'ice');
          }
        };
      })(this);
      this.pc.onaddstream = (function(_this) {
        return function(event) {
          _this.rstream = event.stream;
          _this.call.set('remote/stream', event.stream);
          return _this.contact.set('callstate', 'established');
        };
      })(this);
      if (this.initiator) {
        return this.sendIntent('initiate');
      } else {
        return this.createOffer();
      }
    };
    WebRTCInterface.prototype.onPayload = function(stanza) {
      var el, signal;
      if (this.call == null) {
        return;
      }
      el = stanza.getElementsByTagNameNS(Tram.NS.WEBRTC, 'payload')[0];
      signal = JSON.parse(el.firstChild.nodeValue);
      if (signal.sdp) {
        if (signal.type === 'offer') {
          return this.receiveOffer(signal);
        } else if (signal.type === 'answer') {
          return this.receiveAnswer(signal);
        }
      } else if (signal.candidate) {
        return this.pc.addIceCandidate(new RTCIceCandidate(signal));
      }
    };
    WebRTCInterface.prototype.sendPayload = function(data, type) {
      var msg, payload;
      payload = JSON.stringify(data);
      msg = $msg({
        to: this.peerJid,
        type: 'chat'
      }).c('payload', {
        xmlns: Tram.NS.WEBRTC,
        type: type
      }).t(payload);
      return X.conn.send(msg.tree());
    };
    WebRTCInterface.prototype.sendIntent = function(intent) {
      var msg;
      msg = $msg({
        to: this.peerJid,
        type: 'chat'
      }).c('intent', {
        xmlns: Tram.NS.WEBRTC
      }).t(intent);
      return X.conn.send(msg.tree());
    };
    WebRTCInterface.prototype.createOffer = function() {
      return this.pc.createOffer((function(_this) {
        return function(offer) {
          return _this.pc.setLocalDescription(offer, function() {
            return _this.sendPayload(_this.pc.localDescription, 'offer');
          }, _this.fail);
        };
      })(this), this.fail);
    };
    WebRTCInterface.prototype.receiveOffer = function(offer) {
      return this.pc.setRemoteDescription(new RTCSessionDescription(offer), (function(_this) {
        return function() {
          return _this.pc.createAnswer(function(answer) {
            return _this.pc.setLocalDescription(answer, function() {
              return _this.sendPayload(_this.pc.localDescription, 'answer');
            }, _this.fail);
          }, _this.fail);
        };
      })(this), this.fail);
    };
    WebRTCInterface.prototype.receiveAnswer = function(answer) {
      return this.pc.setRemoteDescription(new RTCSessionDescription(answer));
    };
    WebRTCInterface.prototype.fail = function() {
      this.disconnect();
      return this.contact.unset('callstate');
    };
    WebRTCInterface.prototype.disconnect = function() {
      if (this.call != null) {
        this.call.unset('remote/stream');
        this.call.unset('local/stream');
        calls.remove(this.call);
      }
      if (this.rstream != null) {
        this.stopStream(this.rstream);
      }
      if (this.lstream != null) {
        this.stopStream(this.lstream);
      }
      if (this.pc != null) {
        this.pc.close();
        return this.pc = null;
      }
    };
    WebRTCInterface.prototype.stopStream = function(stream) {
      var i, j, len, len1, ref, ref1, track;
      if (stream.getAudioTracks != null) {
        ref = stream.getAudioTracks();
        for (i = 0, len = ref.length; i < len; i++) {
          track = ref[i];
          if (typeof track.stop === "function") {
            track.stop();
          }
        }
      }
      if (stream.getVideoTracks != null) {
        ref1 = stream.getVideoTracks();
        for (j = 0, len1 = ref1.length; j < len1; j++) {
          track = ref1[j];
          if (typeof track.stop === "function") {
            track.stop();
          }
        }
      }
      return typeof stream.stop === "function" ? stream.stop() : void 0;
    };
    return WebRTCInterface;
  })();
}).call(this);
//# sourceMappingURL=webrtc.js.map