/***********************************************************************
                            content.js
************************************************************************
Main blackbox function

*****Note: This document should only have changes made to it that don't
*****break any previous e-learning functions.

The majority of the functions here send data to the client-specific
template file for parsing after finding the data required.
************************************************************************/
var navLoaded = false;
var swipeLoaded = false;
var timer, soundtimer;

/*
Content-object
*/
function Content(){
	this.toc;
	this.page;
	this.paceimgs;
	this.pageDelays = new Array();
	this.pageTemplate = "Page";
	this.swipeCarousel;
	this.currentPageItem;
	this.tocdiv;
	this.courseTitle;
	this.totalChapNr = 0;
	this.totalPageNr = 0;
	this.courseLanguage;
	
	this.containsTest = false; //Used to determine if scorm complete should be set on last page or not
	
	this.chapterArray = new Array(); //Used to hold chapter links for the chapter indicator
	
	this.pageArray = new Array(); //Used to hold the contents of the pages
};

Content.prototype.init = function(){
	try{
		document.documentElement.requestFullScreen();
		/*screen.orientation.lock('landscape').catch(function() {
			//Prevents Chrome errors.
		});*/
		screen.orientation.lock('landscape');
		screen.msLockOrientation('landscape');
		screen.mozLockOrientation('landscape');
		window.scrollTo(0,1);
	}catch(err){
		
	}

	// Find matches
	try{
		var isMobile = window.matchMedia("screen");
		
		if (isMobile.matches) {
			//Conditional script here
			var mql = window.matchMedia("(orientation: portrait)");
			// If there are matches, we're in portrait
			if(mql.matches) {  
				// Portrait orientation
				alert('This e-learning is best viewed in landscape mode.');
			} else {  
				// Landscape orientation
	}	
		}
	}catch(err){
		
	}

	
	var c = this;
	//Hide the body container until everything is loaded.
	$("#at_body_container").hide();
	c.paceimgs = paceImages; //Hämtas från settings-filen
	
	/*c.toc = new Toc();
	c.toc.loadToc();*/
	
			//Om cookien redan är satt
			if(getCookie("thepace") != null){
				var cookieok = false;
				//Kolla om cookien innehåller ett giltigt värde
				for(var i=0;i<paces.length;i++){
					if(getCookie("thepace") == paces[i]){
						cookieok = true;
						break;
					}
				}
				if(!cookieok){
					//Om inget överensstämmande värde hittat, sätt till default
					setCookie("at_thepace",1,360);
				}

				/*globalTime = getCookie("at_thepace")*1000;*/
				globalTime = 1000;
			}else{
				setCookie("at_thepace",1,360);
				/*globalTime = getCookie("at_thepace")*1000;*/
				globalTime = 1000;
			};
			c.loadContent2();
			//setSoundImages();
			
	
	/* Check whether course/module is run within an lms
	** If so, hide logo
	*/
	if(lmsConnected == true){
		$("#logo").hide();
	}
	
	//Set keypresses
	$(document).keydown(function(e) {
		switch(e.which) {
			case 37: // left
				c.leftArrowFunction();
				break;

			case 38: // up
				break;

			case 39: // right
				c.rightArrowFunction();
				break;

			case 40: // down
				break;

			default: return; // exit this handler for other keys
		}
		e.preventDefault(); // prevent the default action (scroll / move caret)
	});
};

/**********************************************************
Main data handling function.

Runs once per 'reload'
2015-06-20 - sfa
**********************************************************/
Content.prototype.loadContent2 = function(){
	var c = this;
	
	var curChapName;
	var curChapLink;
	var curSubName;
	var curSubLink;
	var curSubNum;

	//c.page is the information from the address bar about what page we are on currently
	var testPage = DEFAULT_PAGEDATA+"#document_wrapper";
	$.get(testPage,function(data){

		//Set document title (top of browser)
		//2015-06-24 There's a problem in some browsers of them not parsing the entire
		//document that they are sent, so in arbortext we've moved the title down
		//further in the finished publish so that we can find it even in firefox locally
		c.courseTitle = $(data).find('.document_title').text();
		c.courseLanguage = $(data).find('.document_language').text();
		
		c.template_setCourseTitle();
		
		//This section may not work in all browsers, test it before relying on it
		var productName = $(data).find("."+elements.productName).text();
		c.template_setProductName(productName);
		var productCategory = $(data).find("."+elements.productCategory).text();
		c.template_setProductCategory(productCategory);
		
		//create an array of all page sections
		var pages = $(data).find(".page_section");
		var prevPage = "";
		var nextPage = "";
		$(pages).each(function(i,v){
			var pageData = new PageItem();
			var curPage = this;
			
			//Get the page id
			var tempPageID = $(curPage).attr('id');
			pageData.pageid = tempPageID;
			
			
			if(prevPage.length){
				pageData.prevPage = prevPage;
			} else{
				pageData.prevPage = false;
			}
			//Save the page for the next element
			prevPage = tempPageID;
			
			//get the title
			pageData.pagetitle = $(curPage).find('.pageTitle:first').text();
			
			//get the template
			if($(curPage).attr('webtemplate')){
				pageData.template = $(curPage).attr('webtemplate');
			} else {
				pageData.template = "Page";
			}
			
			//Check if the page has been set specifically to not be in the TOC
			if($(curPage).attr('toc')){
				if($(curPage).attr('toc') == "hidden"){
					pageData.inToc = false;
				}
			}

			
			//Remove extra_info_sections from the content
			$(curPage).find("div.Extra_Info_section").remove();
			//get the content
			pageData.pagecontent = $(curPage);
			
			//CHAPTER STUFF
			//get the chap name
			pageData.chaptername = $(curPage).parents(".chapter_section").find(".chapterTitle").text();
			pageData.chapterlink = $(curPage).parents(".chapter_section").find(".page_section:first").attr('id');
			pageData.subchaptername = $(curPage).parents(".subchapter_section").find(".page_section:first").attr('id');
			pageData.subchapterlink = $(curPage).parents(".subchapter_section").find(".page_section:first").attr('id');
			
			//Save the chapter number in the pageData
			pageData.chapNr = $(curPage).attr('chapterNumber');
			if(pageData.chapNr !== "0"){
				c.totalPageNr++;
				pageData.pageNumber = c.totalPageNr;//First 'start' page is page 0, so page 1 is after that
				//Add code here to exclude pages as desired.
			} else {
				pageData.pageNumber = "0";
			}
			
			//Check if the current chaptername is the same as the one being used now
			if(pageData.chapterlink != curChapLink){				
				//Increase the chapter number by 1. (do this after assigning the number so that the first chapter gets the index of 0)
				c.totalChapNr++;
				
				//Swap the new data
				curChapName = pageData.chaptername;
				curChapLink = pageData.chapterlink;
				
				//Add the id of the first page in the chapter to the chapterArray for usage in the future
				var chapInformation = [pageData.pageid,pageData.chaptername]
				
				c.chapterArray.push(chapInformation);
			}
			
			var tempQuestionInfo = new QuestionInfo();
			var tempQInfo = $(curPage).attr('firstTestPage');
			var val3 = (tempQInfo === "true");
			tempQuestionInfo.isFirstQuestion = val3;
			
			
			//Check if this page includes a challenge
			if( $(curPage).attr("isChallenge") == "true" ){
				pageData.hasChallenge = true;
				
				//Check if this is a test chapter.
				//Used with the old method of determining test
				var quizType = $(curPage).parents(".chapter_section:first").attr('quizType');
				if(quizType == 'test'){
					c.containsTest = true;
					tempQuestionInfo.isTestQuestion = true;
					tempQuestionInfo.minTestGrade = $(curPage).parents(".chapter_section:first").attr('quiz_pass_limit');
				}
				//Newly named elements for Tobii
				var isTest = $(curPage).attr('isPartOfTest');
				if(isTest){
					//Converting this to a boolean
					var val = (isTest === "true");
					c.containsTest = val;
					tempQuestionInfo.isTestQuestion = val;
					tempQuestionInfo.minTestGrade = $(curPage).attr('test_pass_limit');
				}
				
				//Save the correct responses
				var correctResponses = $(curPage).find('.multiple_correct, .single_correct');
				var tempResponseArray = new Array();
				$(correctResponses).each(function(){
					var correctText = $(this).text();
					tempResponseArray.push(correctText);
				});
				
				tempQuestionInfo.correctResponses = tempResponseArray;
				
				pageData.currentQuestionInfo = tempQuestionInfo;
			}
			
			
			//get the subchap name
			pageData.subchaptername = $(curPage).parents(".subchapter_section:first").find(".subchapterTitle:first").text();
			
			c.pageArray.push(pageData);
		});
		
		c.setNextID();
		
		//TODO Check this!
		var extraInfo = $(data).find("div.Extra_Info_section");
		c.createDialogues(extraInfo);
		
		c.createTOC_div();
		
		c.loadCurrentPage(c.getPageID());
	},"html");
};

/*Do not call this until after loadcontent!*/
Content.prototype.createTOC_div = function(){
	var c = this;
	var courseTitle = "";
	var curChapTitle;
	var curChapLink;
	var curSubChapTitle;
	var curSubChapLink;
	
	var toc_html = '<div class="toc_div" id="toc_div">';
	//Add in the course title
	
	for(var i = 0;i < c.pageArray.length; i++){
		var pageID = c.pageArray[i].pageid;
		//If we haven't set the course title
		if(!(courseTitle.length)){
			courseTitle = c.courseTitle;
			/*Fixed a typo in course, update css as needed, includes both classnames atm*/
			toc_html += '<a class="TOC_couse_link TOC_course_link TOC_link" href="javascript:void(0)" onclick="content.loadCurrentPage(\''+pageID+'\');"><p class="TOC_course_text">'+courseTitle+'</p></a>';
		}
		
		if(c.pageArray[i].chaptername !== curChapTitle){
			//Create Chapter
			curChapTitle = c.pageArray[i].chaptername;
			toc_html += '<a class="TOC_chapter_link" href="javascript:void(0)" onclick="content.loadCurrentPage(\''+pageID+'\');"><p class="TOC_chapter_text">'+curChapTitle+'</p></a>';
		}
		if(c.pageArray[i].subchaptername !== curSubChapTitle){
			//Create SubChapter
			curSubChapTitle = c.pageArray[i].subchaptername;
			toc_html += '<a class="TOC_subchapter_link" href="javascript:void(0)" onclick="content.loadCurrentPage(\''+pageID+'\');"><p class="TOC_subchapter_text">'+curSubChapTitle+'</p></a>';
		}
		toc_html += '<a class="TOC_page_link" href="javascript:void(0)" onclick="content.loadCurrentPage(\''+pageID+'\');"><p class="TOC_page_text">'+c.pageArray[i].pagetitle+'</p></a>';
	}
	toc_html += '</div>';
	c.tocdiv = toc_html;
	
	$("#at_menu_inner").prepend(toc_html);
	$("#at_menu_container").wrapAll( "<div class='TOCParent' />");
}

Content.prototype.setNextID = function(){
	var c = this;
	var nextPage = "";
	var arrayLength = c.pageArray.length;
	var curIndex = "";
	var nextID = "";
	for(curIndex = arrayLength-1; curIndex >= 0;curIndex--){
		if(nextID.length){
			c.pageArray[curIndex].nextPage = nextID;
		} else {
			c.pageArray[curIndex].nextPage = false;
		}
		nextID = c.pageArray[curIndex].pageid;
	}
}

Content.prototype.gotoFirstPage = function(){
	var c = this;
	firstID = c.pageArray[0].pageid;
	
	c.loadCurrentPage(firstID);
};

/*This function is slower than the default method of
linking to the next page, use this only when it is not known
in advance what the next page is*/
Content.prototype.gotoNextPage = function(){
	var c = this;
	var id = content.getPageID();
	var tempID = id.split('#');
	var tempID2 = tempID.length;
	var shortpageID = tempID[tempID2-1];//Gets the part of the page after the #
	
	var pageIndex = c.findPageIndex(shortpageID);
	var nextPageID = c.pageArray[pageindex].nextPage;
	
	c.loadCurrentPage(nextPageID);
}

/*Called when the right arrow is clicked*/
Content.prototype.rightArrowFunction = function(){
	var btnClicked = false;
	//Check if the next button exists
	var nextBtn = $("#"+ elements.nextButton);
	if(nextBtn.length){
		//check if the button is visible (active)
		var display = $('#nextBtn_div').is(":visible");
		if(display){
			//Simulate a click on the next button
			$("#"+ elements.nextButton).trigger('click');
			btnClicked = true;
		}
	}
	if(!btnClicked){
		//Check if there is a start button
		var startBtn = $('#startBtn');
		if(startBtn.length){
			//Simulate a click on the start button
			$('#startBtn').trigger('click');
		}	
	}	
}
/*Called when the left arrow is clicked*/
Content.prototype.leftArrowFunction = function(){
	//Check if the back button exists
	var backBtn = $("#"+ elements.backButton);
	if(backBtn.length){
		var display = $('#backBtn_div').is(":visible");
		if(display){
			//Simulate a click on the back button
			$("#"+ elements.backButton).trigger('click');
		}
	}
}



function removeAudio(){
	try{
		jwplayer().remove();
	}catch(e){
		if(window.console){
			//console.log("Couldn't remove jwplayer");
		}
	}

	$(".audioPlayer").remove();
}


Content.prototype.loadCurrentPage = function(curPageID){
	var c = this;
		
	//Hide any existing dialogs.
	$(".ui-dialog-content").dialog("close");
	//Hide any quiz feedback
	$(".questionFeedbackBox").remove();
	
	//Remove audio
	removeAudio();
	
	//Hide the menu if it is out.
	if(c.menuState !== 0){
		$("#at_menu_container").hide();
		c.toggleMenu();
		c.menuState = 0;
	}
	
	var pageindex = 0;
	if(curPageID !== DEFAULT_PAGE){
		//Locate array index for current page
		pageindex = c.findPageIndex(curPageID);
	}
	var currPageItem = c.pageArray[pageindex];
	c.currentPageItem = currPageItem;
	
	//Set next and prev buttons, do this BEFORE applyTemplate in case we need to later hide something
	//This prevents it from reappearing.
	c.setNextButton(currPageItem.nextPage);
	c.setBackButton(currPageItem.prevPage);
	c.setNavigationButtons();
	
	c.template_setBodyContent(currPageItem.pagecontent);
	c.template_applyTemplate(currPageItem);
	
	//Check for any iframe div's and replace them with actual iframs.
	//<div border="0" class="inlineframe externalQuiz" frameborder="0" height="390" src="http://www.farligt.se/farligt/prov/index3.php?course=adr1-3&amp;module=1" width="1000">Laddar modulprov, vänligen vänta</div>
	//<iframe src="http://www.farligt.se/farligt/prov/index3.php?course=adr1-3&module=1" width="1000" height="390" border="0" frameborder="0" class="inlineframe externalQuiz">Din webbläsare stöder inte iframes</iframe>
	var iframeList = $( ".inlineframe" );
	if( $(iframeList).length){
		c.createIframes(iframeList);
	}
	
	//Delays
	c.scanForDelay(currPageItem.pagecontent);
	

	//Set page id in the address bar (fixes reload as well)
	c.setAddressBar(curPageID);
	
	//Set pageNumber
	var totalPages = c.pageArray.length-1;
	c.setPagination( currPageItem.pageNumber, c.totalPageNr );
		
	var dataObjLoaded = false;
	//Scanna dokument för att hitta <object>
	var dataObjectTags = $("."+elements.dataObjectTag+ ",.eObject[type='audio'],.eObject[type='video']");
	if($(dataObjectTags).length){
		var curPage = c.currentPageItem.pageid;
		//Skicka in sökväg till objectdatatype
		//om den inte ingår i en section-4setTimeout(function(e){
		setTimeout(function(){
			c.startDataObject(curPage, dataObjectTags);
		},100);
	};
	
	c.setSound();
	
	//Scanna dokument för att hitta quiz
	if($("."+elements.challenge).length > 0){
		//Anropa funktion för att skapa quizzar
		c.quiz_createChallenge();
	};
};

Content.prototype.createIframes = function(listOfIframes){
	$(listOfIframes).each(function(){
		var iframeClass = $(this).attr("class");
		var iframeFrame = $(this).attr("frameborder");
		var iframeBorder = $(this).attr("border");
		var iframeSrc = $(this).attr("src");
		var iframeWidth = $(this).attr("width");
		var iframeHeight = $(this).attr("height");
		var iframeText = $(this).text();
		
		$( this ).replaceWith( '<iframe src="' + iframeSrc + '" width="'+ iframeWidth + '" height="'+iframeHeight+'" border="'+ iframeBorder + '" frameborder="'+iframeFrame+'" class="' + iframeClass + '">'+iframeText+'</iframe>' );
	});
}



Content.prototype.startDataObject = function(pageId1, dataObjectTags){
	var c = this;
	if(pageId1 == c.currentPageItem.pageid){
		c.resolveDataObject(dataObjectTags, c.currentPageItem.template);
		c.setupAudio();
	}	
}

Content.prototype.setAddressBar = function(pageID){
	window.location.hash = "page=sect1.html,pageid="+pageID;
}

Content.prototype.findPageIndex = function(pageID){
	var c = this;
	
	var numPages = c.pageArray.length-1;
	for(var i = 0; i < c.pageArray.length;i++){
		if(pageID == c.pageArray[i].pageid)
			return i;
	}
	//Nothing found
	return false;
};

Content.prototype.scanForDelay = function(context){
	var c = this;
	
	//Scanna dokument för att hitta delay
	if($(context).find($("."+elements.delay)).length > 0 || $(context).find("."+elements.delay).length > 0){
		c.pageDelays = [];
		//Sätter upp delay för respektive delay-element i DOM
		c.makeDelay();
	};
}

/**
function loadResources
Laddar in script och css
*/
function loadCss(url, callback) {
	var css = document.createElement("link")
	css.type = "text/css";
	css.rel = 'stylesheet';

	css.media = 'screen';
 
	if (css.readyState) { //IE
		css.onreadystatechange = function () {
			if (css.readyState == "loaded" || css.readyState == "complete") {
				css.onreadystatechange = null;
				callback();
			};
		};
	} else { //Others
		css.onload = function () {
			callback();
		};
	};
	css.href = url;
	document.getElementsByTagName("head")[0].appendChild(css);
};

function loadScript(url, callback) {
	var script = document.createElement("script")
	script.type = "text/javascript";

	if (script.readyState) { //IE
		script.onreadystatechange = function () {
			if (script.readyState == "loaded" || script.readyState == "complete") {
				script.onreadystatechange = null;
				callback();
			};
		};
	} else { //Others
		script.onload = function () {
			callback();
		};
	};
 
	script.src = url;
	document.getElementsByTagName("head")[0].appendChild(script);
};

/**
function getPageID
Extraherar id från adressfältet
In
Out = pid (string)
*/
Content.prototype.getPageID = function(){
	var c = this;
	
	// Extract filename from url
	var pid = "";
	var strLocation = String(document.location);
	
	//Find last occurance of /
	var pageIndex = strLocation.lastIndexOf("pageid=");
	
	var pageID = "";
	if(pageIndex != -1){
		pageID = strLocation.substring(pageIndex+7,strLocation.length);
	} else {
		//If we don't find anything, just go to the default page. It's generally a good bet.
		pageID = c.pageArray[0].pageid;
	}
	
	return pageID;
};


/**
Initierar content-objekt och laddar in nödvändiga script
*/
var content = new Content();
$(document).ready(function(e) {
	//Init everything
    content.init();
});