joystick.js

(function () {
	
	
	async function fetchWithTimeout(URL, timeout=8000){ // ref: https://dmitripavlutin.com/timeout-fetch-request/
		try {
			const controller = new AbortController();
			const timeout_id = setTimeout(() => controller.abort(), timeout);
			const response = await fetch(URL, {...{timeout:timeout}, signal: controller.signal});
			clearTimeout(timeout_id);
			return response;
		} catch(e){
			errorlog(e);
			return await fetch(URL); // iOS 11.x/12.0
		}
	}


	function getAllContentNodes(element) {
		var resp = "";
		element.childNodes.forEach(node=>{
			if (node.childNodes.length){
				resp += getAllContentNodes(node)
			} else if ((node.nodeType === 3) && (node.textContent.trim().length > 0)){
				if (settings.textonlymode){
					resp += node.textContent.trim()+" ";
				} else {
					resp += node.textContent.trim()+" ";
				}
			} else if (node.nodeType === 1){
				if (settings.textonlymode){
				//	if ("alt" in node){
				//		resp += node.alt.trim()+" ";
					//}
				} else {
					resp += node.outerHTML;
				}
			} 
		});
		return resp;
	}
	
	var lastMessage = "";
	var lastUser  = "";
	
	function processMessage(ele, bot=false){	// twitch
	
	  var chatsticker = false;
	  var chatmessage = "";
	  var nameColor = "";
	  
	  try {
		var chatname = ele.querySelector(".username").innerText;
	  } catch(e){
		 return;
	  }
	  
	  chatname = chatname.trim();
	  if (!chatname){return;}
	  
	  try {
		  nameColor = ele.querySelector(".username>span").style.color;
	  } catch(e){
	  }
	  
	  var chatbadges = [];
	  var hasDonation = '';
	  
	  
	  if (ele.querySelector("[title='Streamer']")){ // host.
		  var badge = {};
		  badge.html = '<?xml version="1.0" encoding="utf-8"?><svg width="24px" height="24px" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><path d="M19.965 8.521C19.988 8.347 20 8.173 20 8c0-2.379-2.143-4.288-4.521-3.965C14.786 2.802 13.466 2 12 2s-2.786.802-3.479 2.035C6.138 3.712 4 5.621 4 8c0 .173.012.347.035.521C2.802 9.215 2 10.535 2 12s.802 2.785 2.035 3.479A3.976 3.976 0 0 0 4 16c0 2.379 2.138 4.283 4.521 3.965C9.214 21.198 10.534 22 12 22s2.786-.802 3.479-2.035C17.857 20.283 20 18.379 20 16c0-.173-.012-.347-.035-.521C21.198 14.785 22 13.465 22 12s-.802-2.785-2.035-3.479zm-9.01 7.895-3.667-3.714 1.424-1.404 2.257 2.286 4.327-4.294 1.408 1.42-5.749 5.706z"/></svg>';
		  badge.type = "svg";
		  chatbadges.push(badge);
	  }
	  
	  // need to add dono support
	  
	  try {
		var eleContent = ele.querySelector(".content > span:nth-of-type(2):not([class])");
		chatmessage = getAllContentNodes(eleContent);
	  } catch(e){
		  return;
	  }
	  
	 if (chatmessage){
		 chatmessage = chatmessage.trim();
	 }
	 
	 
	 if ((lastMessage === chatmessage) && (lastUser === chatname)){
		  lastMessage = "";
		  chatname = "";
		  return;
	  } else {
		lastMessage = chatmessage;
		lastUser = chatname;
	  }
	  
	  
	  var chatimg = "";
	
	 
	  if (!chatmessage && !hasDonation){
		return;
	  }

	  var data = {};
	  data.chatname = chatname;
	  data.chatbadges = chatbadges;
	  data.nameColor = nameColor;
	  data.chatmessage = chatmessage;
	  data.chatimg = chatimg;
	  data.hasDonation = hasDonation;
	  data.hasMembership = "";
	  data.type = "joystick";
	  if (bot){
		data.bot = bot;
	  }
	//  console.log(data);
	  
	 
	  try {
		chrome.runtime.sendMessage(chrome.runtime.id, { "message": data }, function(e){});
	  } catch(e){
		  //
	  }
	}

	chrome.runtime.onMessage.addListener(
		function (request, sender, sendResponse) {
			try{
				if ("focusChat" == request){
					document.querySelector('input[flow-id="chat-message-text-input"]').focus();
					sendResponse(true);
					return;
				}
				if (typeof request === "object"){
					if ("settings" in request){
						settings = request.settings;
						sendResponse(true);
						return;
					}
				}
				// twitch doesn't capture avatars already.
			} catch(e){}
			sendResponse(false);
		}
	);
	
	var settings = {};
	// settings.textonlymode
	// settings.streamevents
	
	
	chrome.runtime.sendMessage(chrome.runtime.id, { "getSettings": true }, function(response){  // {"state":isExtensionOn,"streamID":channel, "settings":settings}
		if ("settings" in response){
			settings = response.settings;
		}
	});

	function onElementInserted(target) {
		var onMutationsObserved = function(mutations) {
			
			mutations.forEach(function(mutation) {
				if (mutation.addedNodes.length) {
					for (var i = 0, len = mutation.addedNodes.length; i < len; i++) {
						try {
							if (mutation.addedNodes[i].nodeName.toLowerCase() !== "div"){continue;}
							if (mutation.addedNodes[i].ignore){continue;}
							mutation.addedNodes[i].ignore=true;
							if (mutation.addedNodes[i].classList.contains("chat-message")){
								if (!mutation.addedNodes[i].classList.contains("event_bot_message")){
									processMessage(mutation.addedNodes[i]);
								} else {
									processMessage(mutation.addedNodes[i], true);
								}
							}
						} catch(e){}
					}
				}
			});
		};
		
		var config = { childList: true, subtree: true };
		var MutationObserver = window.MutationObserver || window.WebKitMutationObserver;
		var observer = new MutationObserver(onMutationsObserved);
		observer.observe(target, config);
	}
	
	console.log("Social Stream injected");
	
	var checkReady = setInterval(function(){
		var mainChat = document.querySelector("#chat-messages");
		if (mainChat){ // just in case 
			console.log("Social Stream Start");
			clearInterval(checkReady);
			
			setTimeout(function(){
				var clear = mainChat.querySelectorAll(".chat-message");
				for (var i = 0;i<clear.length;i++){
					clear[i].ignore = true; // don't let already loaded messages to re-load.
					//processMessage(clear[i]); // testing only.
				}
				console.log("Social Stream ready to go");
				onElementInserted(mainChat);
			},1000);
		} 
	},500);
	
	///////// the following is a loopback webrtc trick to get chrome to not throttle this twitch tab when not visible.
	try {
		var receiveChannelCallback = function(e){
			remoteConnection.datachannel = event.channel;
			remoteConnection.datachannel.onmessage = function(e){};;
			remoteConnection.datachannel.onopen = function(e){};;
			remoteConnection.datachannel.onclose = function(e){};;
			setInterval(function(){
				if (document.hidden){ // only poke ourselves if tab is hidden, to reduce cpu a tiny bit.
					remoteConnection.datachannel.send("KEEPALIVE")
				}
			}, 800);
		}
		var errorHandle = function(e){}
		var localConnection = new RTCPeerConnection();
		var remoteConnection = new RTCPeerConnection();
		localConnection.onicecandidate = (e) => !e.candidate ||	remoteConnection.addIceCandidate(e.candidate).catch(errorHandle);
		remoteConnection.onicecandidate = (e) => !e.candidate || localConnection.addIceCandidate(e.candidate).catch(errorHandle);
		remoteConnection.ondatachannel = receiveChannelCallback;
		localConnection.sendChannel = localConnection.createDataChannel("sendChannel");
		localConnection.sendChannel.onopen = function(e){localConnection.sendChannel.send("CONNECTED");};
		localConnection.sendChannel.onclose =  function(e){};
		localConnection.sendChannel.onmessage = function(e){};
		localConnection.createOffer()
			.then((offer) => localConnection.setLocalDescription(offer))
			.then(() => remoteConnection.setRemoteDescription(localConnection.localDescription))
			.then(() => remoteConnection.createAnswer())
			.then((answer) => remoteConnection.setLocalDescription(answer))
			.then(() =>	{
				localConnection.setRemoteDescription(remoteConnection.localDescription);
				console.log("KEEP ALIVE TRICk ENABLED");
			})
			.catch(errorHandle);
	} catch(e){
		console.log(e);
	}

})();