// Modal Visitor Poll 2.0.6
var ModalVisitorPoll = function(id) {
	var settings = {
		displayFrequency: 100,
		cookieExpireDays: 30,
		currentForm: null,
		forms: [],
		loaded: false,
		userParticipate: true,
		formPreviouslyDisplayed: false,
		precedingForm: true,
		noPrecedingForm: true,
		closeRedirectUrl:  null,
		formIsVisible: false,
		answered: false
	};
	
	var sla = [];
	
	function init() {
		jQuery(function() {
			jQuery.get("/ModalVisitorPoll/config.xml", load);
		});
	}
	
	function settingsLoaded(func) {
		if(typeof(func) == "undefined" && settings.loaded) {
			for(var i = 0; i < sla.length; i++) {
				sla[i]();
			}
		}
		else
		{
			sla.push(func);
		}
	}
	
	function load(data) {
		// block safari for now
		if(jQuery.browser.safari) {
			return;
		}
		
		var displayFrequency = jQuery(data).find("poll").attr("displayFrequency");
		var cookieExpireDays = jQuery(data).find("poll").attr("cookieExpireDays");
		if(displayFrequency != "") {
			settings.displayFrequency = displayFrequency;
		}
		if(cookieExpireDays != "") {
			settings.cookieExpireDays = cookieExpireDays;
		}
		
		// Check if the visitor should participate in the poll
		settings.userParticipate = participateCheck();
		if(!settings.userParticipate) {
			return;
		}
		
		// Load all qustionnaires
		loadForms(data);
		
		// Check that the form hasn't been displayed before
		settings.formPreviouslyDisplayed = formPreviouslyDisplayed();
		// Check preceding questionnarie
		settings.precedingForm = precedingFormCheck();
		// Check reversed preceding questionnaire
		settings.noPrecedingForm = noPrecedingFormCheck();
		
		// All settings are loaded
		settings.loaded = true;
		settingsLoaded();
		
		// Initalize Coookie
		var cookie = new Cookie(settings.currentForm.id, settings.cookieExpireDays);
		if(!cookie.load()) {
			cookie.setVal("state", "init");
			cookie.save();
		}
		
		// Display the form now or later
		if(settings.currentForm.displayEvent == "load") {
			showForm();
		}
		else if(settings.currentForm.displayEvent == "timer") {
			setTimeout(function() { showForm(); }, getDisplayDelay());
		}
		else if(settings.currentForm.displayEvent == "leave") {
			attachLinkEvent();
		}
	}
	
	function showForm() {
		if(!precedingFormCheck() || !noPrecedingFormCheck() || settings.formPreviouslyDisplayed) {
			return;
		}
		
		if(!self._mvcFormVisible) {
			jQuery(document).ready(function() {
				jQuery('<div id="MVPjqm" class="jqmWindow" />').prependTo('body')
					.jqm({ ajax: settings.currentForm.src, 
						ajaxText: 'Laddar enk&auml;t...', 
						modal: false, 
						onLoad: initForm, 
						onHide: closeForm })
					.jqmShow();
				self._mvcFormVisible = true;
			});
		}
	}
	
	// Event to run when the window is initialized
	function initForm() {
		// The form should never be displayed more than once
		// TODO: Custom var ska sättas - användare exponerad
		updateCookieState("displayed");
		settings.formPreviouslyDisplayed = true;
		
		jQuery("form#MVPVisitorPollForm").submit(function() { return false; });
		jQuery("#MVPjqm").jqmAddClose("#MVPClose"); 
		jQuery("input[type=radio]", "form#MVPVisitorPollForm").click(function() {
			if (jQuery(this).attr("class") == "MVPFreeTextChoice")
				jQuery("#" + jQuery(this).attr("name") + "FreeText").removeAttr("disabled").focus();
			else
				jQuery("#" + jQuery(this).attr("name") + "FreeText").attr("disabled", "disabled");
			jQuery("input[name=" + jQuery(this).attr("name") + "]", "form#MVPVisitorPollForm").each(function() { jQuery(this).attr("clicked", "true"); });
			if (isCompleted()) { 
				jQuery("#MVPSubmitButton").removeAttr("disabled").attr("src", "/ModalVisitorPoll/Images/submit.gif").attr("class", "MVPActiveButton").attr("title", "Skicka dina svar och stäng enkäten")
				  .mousedown(function() { 
					jQuery("#MVPSubmitButton").attr("src", "/ModalVisitorPoll/Images/submit_down.gif");  
				  })
				  .mouseover(function() {  
					jQuery("#MVPSubmitButton").attr("src", "/ModalVisitorPoll/Images/submit_over.gif");  
				  })
				  .mouseout(function() { 
					jQuery("#MVPSubmitButton").attr("src", "/ModalVisitorPoll/Images/submit.gif"); 
				  });
			}
		});
		jQuery("#MVPSubmitButton").click(function() { 
			if(!isCompleted()) { 
				alert("Du måste svara på alla frågor innan du kan skicka in enkäten!");
			} else {
				saveVisitorPoll();
			}			
		});
	}
	
	// Event to run when the window is closed
	function closeForm(jqm) {
		if(!settings.answered) {
			try {
				updateCookieState("denied");
				pageTracker._trackPageview( ["/action/user-poll/", settings.currentForm.id ,"/denied" ].join("") );
			} catch(ex) { }
		}
		jqm.w.hide();
		jqm.o.hide();
		self._mvcFormVisible = false;
		
		if(settings.closeRedirectUrl !== null) {
			location.href = settings.closeRedirectUrl;
		}
	}
	
	// Check if all form fields are filled out
	function isCompleted() {
		return (jQuery("input[type=radio][clicked!=true]", "form#MVPVisitorPollForm").length === 0);
	}
	
	// Event that occurs when the save button is clicked
	function saveVisitorPoll() {
		if(isCompleted()) {
			var pageViewVal = "";
			for(var i = 0; i < settings.currentForm.questions.length; i++) {
				var q = settings.currentForm.questions[i];
				
				switch(jQuery(q).attr("registerMethod")) {
					case "customVar" :
						var val = getSelectedValue(q);
						pageTracker._setCustomVar( 
							jQuery(q).attr("slot"), 
							jQuery(q).attr("customVarName"), 
							settings.currentForm.trackerValue + val,
							jQuery(q).attr("scope") );
							//console.log("customvar: ", jQuery(q).attr("slot"), " ", jQuery(q).attr("customVarName"), " ", settings.currentForm.trackerValue + val, " ", jQuery(q).attr("scope"));
						break;
					case "trackPageView" :
						pageViewVal = getSelectedValue(q);
						pageTracker._trackPageview(settings.currentForm.trackerValue + pageViewVal);
						//console.log("trackpage: ", settings.currentForm.trackerValue + pageViewVal);
						break;
				}
			}
			updateCookieState("completed");
			settings.answered = true;
			jQuery("#MVPjqm").jqmHide();
		}
		return false;
	}
	
	// Get's the selected value for a question
	function getSelectedValue(q) {
		// Look for checkbox or radiobutton
		var selectedElement = jQuery("#MVPVisitorPollForm input[name=" + jQuery(q).attr("id")  + "]:checked");
		// Look for a stand alone text-filed if not checkbox or radiobutton was found
		if(selectedElement.length === 0) {
			selectedElement = jQuery("#MVPVisitorPollForm :text[name=" + jQuery(q).attr("id")  + "]");
		}
		if (selectedElement.val().toLowerCase() == "annat") {
			val = "annat/" + selectedElement.nextAll(":text").val();
		}
		else {
			val = selectedElement.val();
		}
		return val;
	}
	
	function loadForms(data) {
		// TODO: possible to rewrite to load only the current form? - that's all we need
		jQuery(data).find("form").each(function() {
			settings.forms.push({
				id: getAttrSafe(jQuery(this).attr("id")),
				src: getAttrSafe(jQuery(this).attr("src")),
				trackerValue: getAttrSafe(jQuery(this).attr("trackerValue")),
				displayEvent: getAttrSafe(jQuery(this).attr("displayEvent")),
				displayDelay: getAttrSafe(jQuery(this).attr("displayDelay")),
				precedingForm: getAttrSafe(jQuery(this).attr("precedingForm")),
				noPrecedingForm: getAttrSafe(jQuery(this).attr("noPrecedingForm")),
				urlRestriction: getAttrSafe(jQuery(this).attr("urlRestriction")),
				questions : null
			});
		});
		settings.currentForm = getForm(id);
		settings.currentForm.questions = loadQuestions(data);
	}
	
	// Gets all questions for the current form
	function loadQuestions(data) {
		var selector = [ "#", settings.currentForm.id, " > question" ].join("");
		var questions = [];
		jQuery(data).find(selector).each(function() {
			questions.push({
				"id" : getAttrSafe(jQuery(this).attr("id")),
				"customVarName" : getAttrSafe(jQuery(this).attr("customVarName")),
				"registerMethod" : getAttrSafe(jQuery(this).attr("registerMethod")),
				"slot" : getAttrSafe(jQuery(this).attr("slot")),
				"scope" : getAttrSafe(jQuery(this).attr("scope"))
			});
		});
		return questions;
	}
	
	// Attaches click event to external links to dipslay the poll when leaving the site
	function attachLinkEvent() {
		var pattern = /^[a-zA-Z]+:\/\/([^\/]+)\/.*?$/;
		var match = pattern.exec(location.href);
		jQuery("a[href]").click(function() {
			if(this.href.indexOf(match[1]) == -1) {
				settings.closeRedirectUrl = this.href;
				showForm();
				return false;
			}
		});
	}
	
	// Sets the state of the cookie to keep track of if the form has been displayed, denied, completed
	function updateCookieState(state) {
		var cookie = new Cookie(settings.currentForm.id, settings.cookieExpireDays);
		if(cookie.load()) {
			cookie.setVal("state", state);
			cookie.save();
		}
	}
	
	// Returns the remaining time to display the form. Looks for a date value in cookie or creates a new date value in cookie
	function getDisplayDelay() {
		var cookie = new Cookie(settings.currentForm.id, settings.cookieExpireDays);
		var delay = 0;
		if(settings.currentForm.displayEvent == "timer") {
			if(cookie.load() && cookie.getVal("displayTime") !== null) {
				var displayTime = cookie.getVal("displayTime");
				if(displayTime !== null) {
					var diff = new Date(displayTime).getTime() - new Date().getTime();
					delay = diff > 0 ? diff : 0;
				}
			}
			else {
				delay = Number(settings.currentForm.displayDelay);
				var date = new Date();
				date.setMinutes(date.getMinutes() + delay);
				cookie.setVal("displayTime", date.toUTCString());
				cookie.save();
				delay = delay * 60000;
			}
		}
		return delay;
	}
	
	// Checks if the form has been previously displayed
	function formPreviouslyDisplayed() {
		var cookie = new Cookie(settings.currentForm.id);
		var exists = cookie.load();
		var cookieState = cookie.getVal("state");
		return exists && (cookieState == "completed" || cookieState == "denied" || cookieState == "displayed");
	}

	// Check if the poll should be displayed to this visitor
	function participateCheck() {
		var cookie = new Cookie("modalVisitorPoll", settings.cookieExpireDays);
		
		if(cookie.load()) {
			return cookie.getVal("participate") == 1;
		}
		else {
			var val = "0";
			if(settings.displayFrequency == 100 || Math.random()*100 < settings.displayFrequency) {
				val = "1";
			}
			cookie.setVal("participate", val);
			cookie.save();
			return val == "1";
		}
	}
	
	// Checks if a preceding form has been answered
	function noPrecedingFormCheck() {
		var precedingOk = true;
		if(settings.currentForm.noPrecedingForm !== null) {
			var cookie = new Cookie(settings.currentForm.noPrecedingForm);
			precedingOk = !cookie.load() || cookie.getVal("state") == "init";
		}
		return precedingOk;
	}
	
	// Checks if a preceding form has been answered
	function precedingFormCheck() {
		var precedingOk = true;
		if(settings.currentForm.precedingForm !== null) {
			var cookie = new Cookie(settings.currentForm.precedingForm);
			var exists = cookie.load();
			precedingOk = exists && cookie.getVal("state") == "completed"; 
		}
		return precedingOk;
	}
	
	// Returns the value as null if it's undefined, null or empty
	function getAttrSafe(val) {
		if(typeof(val) == "undefined" || val === null || val == "") {
			return null;
		}
		return val;
	}
	
	// Get a form by ID
	function getForm(id) {
		if(typeof(id) == "undefined") {
			return getFormByUrl(location.href);
		}
		
		for(var i = 0; i < settings.forms.length; i++) {
			if(settings.forms[i].id == id) {
				return settings.forms[i];
			}
		}
		
		return null;
	}
	
	// Get a form by url
	function getFormByUrl(url) {	
		var matches = [];
		var exactmatch;

		// Check if there are any form that matches this url
		for(var i = 0; i < settings.forms.length; i++) {
			if(settings.forms[i].urlRestriction.indexOf("!") === -1 && url.indexOf(settings.forms[i].urlRestriction) != -1) {
				matches.push(settings.forms[i]);
			}
		}
		
		// If no matches were found. Check if there are any reversed matches for this url
		//if(matches.length === 0) {
			for(var i = 0; i < settings.forms.length; i++) {
				if(settings.forms[i].urlRestriction.indexOf("!") === 0 && url.indexOf(settings.forms[i].urlRestriction.substring(1)) == -1) {
					matches.push(settings.forms[i]);
				}
			}
		//}
		
		if(matches.length === 0) {
			return null;
		}

		// matches.sort(function(a, b) {
			// return a.urlRestriction.length < b.urlRestriction.length;
		// });

		// plocka url som matchar exakt
		if(matches[0].urlRestriction == url) {
			return matches[0];
		}

		// plocka den längsta url som är relativ och matchar
		for(var i = 0; i < matches.length; i++) {
			if(matches[i].urlRestriction.indexOf("http://") == -1) {
				return matches[i];
			}
		}

		// plocka url som innehåller, startar med och är längst
		return matches[0];
	}
	
	// Cookie handlig class
	var Cookie = function(_id, _expDays) {
		var values = [];
		var id, expires;
		
		// Adds a key/value pair to the value array
		function setVal(k,v) {
			values.push( {"k" :k , "v" : v } );
		}
		
		// Gets the value for the specified key or index
		function getVal(k) {
			if(typeof(k) == "string") {
				var index = indexOf(k);
				return index !== null ? values[indexOf(k)].v : null;
			}
			else if(typeof(k) == "number") {
				return k < values.length ? values[k].v : null;
			}
			return null;
		}
		
		// Returns the index of the specified key
		function indexOf(k) {
			for(var i = 0; i < values.length; i++) {
				if(values[i].k == k) {
					return i;
				}
			}
			return null;
		}
		
		// Initialize the cookie object
		function init() {
			id = _id;
			expires = new Date();
			expires.setDate(expires.getDate()+_expDays);
			expires = expires.toUTCString();
		}
		
		// Try load cookie data. Returns true if data was loaded and false if no cookie data was found
		function load() {
			var cookies = document.cookie.split("; ");
			for(var i = 0; i < cookies.length; i++) {
				var cookie = cookies[i].split("=");
				if (cookie[0] == id) {
					loadValues(cookie[1]);
					return true;
				}
			}
			return false;
		}
		
		// Removes the key/value pair at the specified key or index
		function removeVal(k) {
			if(typeof(k) == "string") {
				var index = indexOf(k);
				if(index < values.length) {
					values.splice(index, 1);
				}
			}
			else if(typeof(k) == "number") {
				if(k < values.length) {
					values.splice(k, 1);
				}
			}
		}
		
		// Loads the cookies key/value pairs and adds them to the value array
		function loadValues(_vals) {
			var vals = _vals.split("|");
			for(var j = 0; j < vals.length; j++) {
				var kv = vals[j].split("$");
				if(kv[0] != "") {
					setVal( kv[0], kv[1] );
				}
			}
		}
		
		// Initialize the cookie object
		init();
		
		// Public members
		return {
			// Call the private setVal function
			setVal : function (k,v) {
				if(getVal(k) !== null) {
					removeVal(k);
				}
				setVal(k,v);
			},
			// Clears the value of the cookie
			clear : function(k) {
				document.cookie = [ id, "=" ].join("");
			},
			// calls the private getVal function
			getVal : function(k) {
				return getVal(k);
			},
			// Calls the private indexOf function
			indexOf : function(k) {
				return indexOf(k);
			},
			// Call the private load function
			load : function() {
				return load();
			},
			// Save the cookie. Separates keys and values with $ and key/value pairs with |
			save : function () {
				var vals = "";
				for(var i = 0; i < values.length; i++) {
					vals += [values[i].k, "$", values[i].v, "|"].join("");
				}
				document.cookie = [ id, "=", vals, "; expires=", expires, "; path=/;" ].join("");
			},
			// Calls the private removeVal function
			removeVal : function(k) {
				removeVal(k);
			}
		};
	};
	
	init();
	
	return {
		show: function() {
			if(settings.userParticipate && !settings.formPreviouslyDisplayed && precedingFormCheck() && noPrecedingFormCheck()) {
				if(!settings.loaded) {
					settingsLoaded(showForm);
				}
				else {
					showForm();
				}
			}
		}
	};
};