/**
 * WhatsApp Chrome Extension
 */

(function() {

	var interval = setInterval(function () {
		var selector = document.querySelector(".app-wrapper-main");
		if(selector) {
			clearInterval(interval);

			setTimeout(startService, 2000);
		}
	}, 500);

	function startService()
	{
		console.debug("[FASTEE] Service ready");

		longPullCreationQueue();

		var chats = document.querySelectorAll(".chatlist .chat"), i, flag = false;
		for(i = 0;i<chats.length;i++) {
			watchNode(chats[i], function(mutations) {
				var chat;
				mutations.forEach(function(mutation) {
					chat = mutation.target.parentNode.parentNode.parentNode.parentNode.parentNode;
					activeChat = chat.className.indexOf("active") > -1;
					if(!activeChat && mutation.target.className == 'icon-meta unread-count' && (mutation.type == 'childList' || (mutation.type == 'attributes' && mutation.attributeName == 'class'))) {
						flag = true;
					}
				});

				if(flag) {
					flag = false;
					handleBackgroundNotification(chat);
				}
			});
		}
	}

	function watchNode(target, callback)
	{
		// create an observer instance
		var observer = new MutationObserver(function(mutations) {
			callback(mutations, observer);
		});

		// configuration of the observer:
		var config = { childList: true, characterData: true, subtree: true };

		// pass in the target node, as well as the observer options
		observer.observe(target, config);
	}

	function handleBackgroundNotification(chat)
	{
		var offsetTop = window.innerHeight-window.screen.availHeight;
		var x = chat.getBoundingClientRect().left + (chat.offsetWidth/2);
		var y = offsetTop + chat.getBoundingClientRect().top + (chat.offsetHeight/2)
		var chatId = chat.getAttribute("data-reactid");

		triggerMouse(x, y).then(function() {
			console.debug("[FASTEE] Background notification handled")

			setTimeout(function () {
				markHandledMessages().then(function(response) {
					watchNode(document.querySelector("#pane-side"), function(mutations, callback) {
						markHandledMessages(true);
					})
				});
			}, 500);
		});
	}

	function markHandledMessages(active)
	{
		active = active||false;
		return new Promise(function(resolve, reject) {
			var messages = document.querySelectorAll(".message-list .msg"), i, flag = false, newMessages = [];
			for(i = 0;i<messages.length;i++) {
				if(!active && messages[i].className.indexOf('msg-unread') > -1) {
					flag = true;
					continue;
				}
				else if(active && !messages[i].getAttribute("fastee-marked") && messages[i].className.indexOf('msg-unread') == -1) {
					flag = true;
				}

				if(flag) {
					newMessages.push(getMessage(messages[i]));
				}

				messages[i].setAttribute("fastee-marked", true);
			}

			console.debug("[FASTEE] All messages processed with FASTEE", newMessages)

			resolve(newMessages)
		});
	}

	function getMessage(messageNode)
	{
		var loop = false;
		if(messageNode.querySelector(".message-author .emojitext")) {
			owner = messageNode.querySelector(".message-author .emojitext").innerText;
		}
		else {
			var chatlist = document.querySelectorAll(".chatlist .msg"), i, loop = false;
			messageNode.setAttribute("fastee-target", true);
			for(i = chatlist.length;i>0;i--) {
				if(chatlist[i].getAttribute("fastee-target")) {
					loop = true;
					continue ;
				}

				if(loop && chatlist[i].querySelector(".message-author .emojitext")) {
					owner = chatlist[i].querySelector(".message-author .emojitext");
				}

			}
			messageNode.removeAttribute("fastee-target")
		}

		return {
			id		: messageNode.getAttribute("data-reactid"),
			owner	: owner,
			text	: messageNode.querySelector(".message-text .emojitext").innerHTML,
		};
	}

	window.newGroup = function(name, members, owner, ownerUid, forumId, conversationId)
	{
		return new Promise(function(resolve, reject) {
			document.querySelector(".pane-list-controls .menu-item:last-child").click();
			setTimeout(function () {
				document.querySelector(".pane-list-controls .active .dropdown a:first-child").click();
				triggerKeyboard(name).then(function() {
					if(!document.querySelector(".drawer-container-new-group .drawer-controls button")) {
						reject();
						return ;
					}
					document.querySelector(".drawer-container-new-group .drawer-controls button").click();
					setTimeout(function () {
						// var i = 0, hold = false;
						// while(i < members.length) {
						// 	if(hold) continue;
						//
						// 	hold = true;
						// 	triggerKeyboard(members[i]).then(function() {
						// 		document.querySelector(".chatlist .contact:first-child").click();
						// 		i++;
						// 		hold = false;
						// 	});
						// }
						createMembers(name, members, owner, ownerUid, forumId, conversationId);
					}, 1000);
				});
			}, 100);
		});
	}

	function updateChatCreated(owner, ownerUid, forumId, conversationId, chatId) {
		var xmlHttp = new XMLHttpRequest();
		xmlHttp.onreadystatechange = function() {
			if (xmlHttp.readyState == 4) {
				if(xmlHttp.status == 204) {
					// resolve();
				}
				// else
					// error(xmlHttp);
			}
		};
		xmlHttp.open("POST", server.site+"/"+ownerUid+"/WHATSAPP/chats", true); // true for asynchronous
		xmlHttp.setRequestHeader("Authorization","Basic "+window.btoa(owner+":?"));
		xmlHttp.setRequestHeader("Session-Id",user.SessionId);
		xmlHttp.setRequestHeader("Content-Type","application/json;charset=UTF-8");
		xmlHttp.send(JSON.stringify({
			forumId: forumId,
			conversationId: conversationId,
			chatId: chatId
		}));
		window.location.reload();
	}

	var i = -1;
	function createMembers(name, members, owner, ownerUid, forumId, conversationId)
	{
		i++;
		if(i == members.length) {
			i = -1;
			document.querySelector(".drawer-new-group .drawer-controls button").click();
			setTimeout(function() {
				updateChatCreated(owner, ownerUid, forumId, conversationId, document.querySelector(".chatlist .chat:first-child").getAttribute("data-reactid"))
			}, 5000)
			return ;
		}

		var member = members[i];
		document.querySelector(".new-group-search input").value = "";
		triggerKeyboard(member).then(function() {
			if(document.querySelector(".chatlist .contact:first-child")) {
				document.querySelector(".chatlist .contact:first-child").click();
			}

			setTimeout(function() {
				createMembers(name, members, owner, ownerUid, forumId, conversationId);
			}, 100)
		});
	}

	window.sendMessage = function(chatId, text)
	{
		document.querySelector(".chatlist .chat[data-reactid='"+chatId+"']").click();
		triggerKeyboard(text).then(function() {
			document.querySelector("footer .block-compose button.send-container").click();
		});
	}

	var server = {
		local: "http://localhost/stagingfastee/d9b762932b90c3f8aa99aa47aaf57a08",
		site: "https://stagingsdk.fastee.co/appserv.svc",
	}
	var user = {
		uid: "d9b762932b90c3f8aa99aa47aaf57a08",
		email: "pub.whatsapp@fastee.co",
		password: "?",
		Authorization: "Basic cHViLndoYXRzYXBwQGZhc3RlZS5jbzo/",
	}
	setTimeout(function () {
		user.SessionId = generateUUID();
	}, 100);

	function triggerKeyboard(str)
	{
		return new Promise(function(resolve, error) {
			var xmlHttp = new XMLHttpRequest();
			xmlHttp.onreadystatechange = function() {
				if (xmlHttp.readyState == 4) {
					if(xmlHttp.status == 204) {
						setTimeout(function () {
							resolve(xmlHttp);
						}, 500);
					}
					else
						error(xmlHttp);
				}
			};
			xmlHttp.open("POST", server.local+"/WHATSAPP/sendkeys", true); // true for asynchronous
			xmlHttp.setRequestHeader("Authorization",user.Authorization);
			xmlHttp.send(JSON.stringify({
				text: str,
			}));
		})
	}

	function triggerMouse(x, y)
	{
		return new Promise(function(resolve, error) {
			var xmlHttp = new XMLHttpRequest();
			xmlHttp.onreadystatechange = function() {
				if (xmlHttp.readyState == 4) {
					if(xmlHttp.status == 204) {
						setTimeout(function () {
							resolve(xmlHttp);
						}, 500);
					}
					else
						error(xmlHttp);
				}
			};
			xmlHttp.open("POST", server.local+"/WHATSAPP/mouseclick".replace("{uid}", user.uid), true); // true for asynchronous
			xmlHttp.setRequestHeader("Authorization",user.Authorization);
			xmlHttp.setRequestHeader("Content-Type","application/json");
			xmlHttp.send(JSON.stringify({
				x: x,
				y: y,
			}));
		})
	}

	function longPullCreationQueue()
	{
		var xmlHttp = new XMLHttpRequest();
		xmlHttp.onreadystatechange = function() {
			if (xmlHttp.readyState == 4) {
				if(xmlHttp.status == 200) {
					var response = JSON.parse(xmlHttp.responseText).chat;
					window.newGroup(response.topic, response.members, response.owner, response.ownerUid, response.forumId, response.conversationId).then(function() {
						longPullCreationQueue();
					});
				}
				else if(xmlHttp.status == 204) {
					longPullCreationQueue()
				}
				// else
					// error(xmlHttp);
			}
		};
		xmlHttp.open("GET", server.site+"/"+user.uid+"/WHATSAPP/chats", true); // true for asynchronous
		xmlHttp.setRequestHeader("Authorization",user.Authorization);
		xmlHttp.setRequestHeader("Session-Id",user.SessionId);
		xmlHttp.send();
	}

	var history = [];
	function generateUUID(){
		var d = new Date().getTime();
		var uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
			var r = (d + Math.random()*16)%16 | 0;
			d = Math.floor(d/16);
			return (c=='x' ? r : (r&0x3|0x8)).toString(16);
		});
		history.push(uuid)
		return uuid;
	};

})();