move out config into own class

public/webrtc.js

@@ -1,10 +1,4 @@
-class Entropy {
-   static localVideo = null;
-   static localStream = null;
-   static remoteVideo = null;
-   static peerConnection = null;
-   static uuid = null;
-   static serverConnection = null;
+class Config {
    static peerConnectionConfig = {
      'iceServers': [
        {'urls': 'stun:stun.stunprotocol.org:3478'},
@@ -35,13 +29,38 @@ class Entropy {
      document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
    }
    
-   static pageReady() {
-     Entropy.uuid = Entropy.getCookie("uuid");
-     if (!Entropy.uuid) {
-       Entropy.uuid = Entropy.createUUID();
-       Entropy.setCookie("uuid", Entropy.uuid);
+   static getUUID() {
+      var uuid = Config.getCookie('uuid');
+      if (!uuid) {
+         uuid = Config.createUUID();
+         Config.setCookie('uuid');
+      }
+      return uuid;
+   }
+   
+   static createUUID() {
+     function s4() {
+       return Math.floor((1 + Math.random()) * 0x10000).toString(16).substring(1);
      }
    
+     return s4() + s4() + '-' + s4() + '-' + s4() + '-' + s4() + '-' + s4() + s4() + s4();
+   }
+}
+
+function pageReady() {
+   Entropy.pageReady();
+}
+
+class Entropy {
+   static localVideo = null;
+   static localStream = null;
+   static remoteVideo = null;
+   static peerConnection = null;
+   static serverConnection = null;
+   
+   static pageReady() {
+     Config.getUUID();
+   
      Entropy.localVideo = document.getElementById('localVideo');
      Entropy.remoteVideo = document.getElementById('remoteVideo');
    
@@ -50,7 +69,7 @@ class Entropy {
    
      var constraints = {
        video: true,
-       audio: false,
+       audio: true,
      };
    
      if(navigator.mediaDevices.getUserMedia) {
@@ -66,7 +85,7 @@ class Entropy {
    }
    
    static start(isCaller) {
-     Entropy.peerConnection = new RTCPeerConnection(Entropy.peerConnectionConfig);
+     Entropy.peerConnection = new RTCPeerConnection(Config.peerConnectionConfig);
      Entropy.peerConnection.onicecandidate = Entropy.gotIceCandidate;
      Entropy.peerConnection.ontrack = Entropy.gotRemoteStream;
      Entropy.peerConnection.addStream(Entropy.localStream);
@@ -88,7 +107,7 @@ class Entropy {
      var signal = JSON.parse(message.data);
    
      // Ignore messages from ourself
-     if(signal.uuid == Entropy.uuid) return;
+     if(signal.uuid == Config.getUUID()) return;
    
      if(signal.sdp) {
        Entropy.peerConnection.setRemoteDescription(new RTCSessionDescription(signal.sdp)).then(function() {
@@ -104,7 +123,7 @@ class Entropy {
    
    static gotIceCandidate(event) {
      if(event.candidate != null) {
-       Entropy.serverConnection.send(JSON.stringify({'ice': event.candidate, 'uuid': Entropy.uuid}));
+       Entropy.serverConnection.send(JSON.stringify({'ice': event.candidate, 'uuid': Config.getUUID()}));
      }
    }
    
@@ -116,7 +135,7 @@ class Entropy {
        .then(function() {
          Entropy.serverConnection.send(JSON.stringify({
             'sdp': Entropy.peerConnection.localDescription, 
-            'uuid': Entropy.uuid,
+            'uuid': Config.getUUID(),
          }));
        })
        .catch(errorHandler);
@@ -130,18 +149,4 @@ class Entropy {
    static errorHandler(error) {
      console.log(error);
    }
-   
-   // Taken from http://stackoverflow.com/a/105074/515584
-   // Strictly speaking, it's not a real UUID, but it gets the job done here
-   static createUUID() {
-     function s4() {
-       return Math.floor((1 + Math.random()) * 0x10000).toString(16).substring(1);
-     }
-   
-     return s4() + s4() + '-' + s4() + '-' + s4() + '-' + s4() + '-' + s4() + s4() + s4();
-   }
-}
-
-function pageReady() {
-   Entropy.pageReady();
 }