if (!window.bt) window.bt = {};

window.bt.tool = "events";
window.bt.render = function(postrender,data,id=''){
	id = (id=='')?'btContainer':id;
	document.getElementById(id).innerHTML = data.html;
	if (postrender) postrender();
};
window.bt.load = function(args={}){
	var url = window.location.href;    
	if (url.indexOf('?') > -1) url = url.substr(0,url.indexOf('?'));

	if (!args) args = {};

	const urlParams = new URLSearchParams(window.location.search);
	if (urlParams.get('t') && !args.hasOwnProperty('t')) args.t = urlParams.get('t');
	if (urlParams.get('s') && !args.hasOwnProperty('s')) args.s = urlParams.get('s');

	var query = Object.keys(args)
		.map(function(k) {return encodeURIComponent(k) + '=' + encodeURIComponent(args[k]);})
		.join('&');

	window.location.href = url+'?'+query;
};
window.bt.action = function(e,action,args){
	if (e) e.preventDefault();

	if (!args) args = {};
	args.a = action;
	const urlParams = new URLSearchParams(window.location.search);
	if (urlParams.get('t') && !args.hasOwnProperty('t')) args.t = urlParams.get('t');
	if (urlParams.get('s') && !args.hasOwnProperty('s')) args.s = urlParams.get('s');

	window.bt.lastAction = action;
	window.bt.load(args);
	return false;
};
window.bt.actionOnElem = function(e,action,elem,args){
	if (e) e.preventDefault();

	if (!args) args = {};
	args.a = action;
	args.el = elem;
	window.bt.lastAction = action;
	
	var query = Object.keys(args)
		.map(function(k) {return encodeURIComponent(k) + '=' + encodeURIComponent(args[k]);})
		.join('&');
		
	var s = document.createElement("script");
	s.type = "text/javascript";
	s.src = "https://boom-production.azurewebsites.net/tools/"+window.bt.tool+"/?"+query;
	document.head.appendChild(s);

	return false;
}
window.bt.initNavigation = function(){
	window.bt.prevHash = window.location.hash;
	if ('onhashchange' in window) {
        window.onhashchange = function () {
            if (window.bt.onNavigate) window.bt.onNavigate( window.bt.prevHash );
			window.bt.prevHash = window.location.hash;
        }
    }
    else {
		window.setInterval(function () {
			if (window.location.hash != window.bt.prevHash) {
				if (window.bt.onNavigate) window.bt.onNavigate( window.bt.prevHash );
				window.bt.prevHash = window.location.hash;
			}
		}, 100);
    }
};
window.bt.navigate = function( hash ){
	if(history.pushState) {
		history.pushState(null, null, '#'+hash);
	}
	else {
		location.hash = '#'+hash;
	}
};
window.bt.setCookie = function( name, jsonData, exp=60 ) {
    var d = new Date();
    d.setTime(d.getTime() + (exp*24*60*60*1000));
    var expires = "expires="+ d.toUTCString();
	if (jsonData!='') jsonData = JSON.stringify(jsonData);
    document.cookie = name + "=" + jsonData + ";" + expires + ";path=/";
};
window.bt.getCookie = function(name, defaultCookie={}) {
    name = name + "=";
    var decodedCookie = decodeURIComponent(document.cookie);
    var ca = decodedCookie.split(';');
    for(var i = 0; i <ca.length; i++) {
        var c = ca[i];
        while (c.charAt(0) == ' ') c = c.substring(1); // LTrim
        if (c.indexOf(name) == 0) {
        	try{
              return JSON.parse( c.substring(name.length, c.length) );
			}catch(err) {
			  return defaultCookie;
			}
        }
    }
    return defaultCookie;
};
window.bt.deleteCookie = function( name ) {
	window.bt.setCookie(name,'',-1);
};
if (!document.getElementsByClassName) {
    document.getElementsByClassName = function(classname) {
        var elArray = [];
        var tmp = document.getElementsByTagName("*");
        var regex = new RegExp("(^|\\s)" + classname + "(\\s|$)");
        for (var i = 0; i < tmp.length; i++) {

            if (regex.test(tmp[i].className)) {
                elArray.push(tmp[i]);
            }
        }

        return elArray;
    };
}
if (!Array.prototype.indexOf){
	Array.prototype.indexOf = function(obj, start) {
		for (var i = (start || 0), j = this.length; i < j; i++) {
			if (this[i] === obj) { return i; }
		}
		return -1;
	};
}
if (!window.bt) window.bt = {};
window.bt.dataCookieName = 'ev-data';
window.bt.admin = function(e,action,args){
	if (!args) args = {};
	args.s = 'admin';
	if (!action) action = 'search';

	window.bt.action(event,action,args);
}
window.bt.search = function( e ){
	var v = document.getElementById('btSearch').value;

	// Save search
	var data = window.bt.getCookie(window.bt.dataCookieName);
	if (data.search!=v){
		data.search = v;
		window.bt.setCookie(window.bt.dataCookieName,data);
	}

	window.bt.action(e,'search',{search:v});
};
window.bt.searchKeyDown = function( e ){
	if ((e.keyCode || e.which || e.charCode || 0) == 13){
		e.preventDefault();
		window.bt.search( e );
		return false;
	}
};
window.bt.backToSearch = function( e ){
	if (e) e.preventDefault();
	
	// Get cookie data
	var data = window.bt.getCookie(window.bt.dataCookieName);

	// Search
	if (data.search && (data.search!='')){
		window.bt.action(e,'search',{search:data.search});
		return;
	}

	window.bt.load();
}
window.bt.toggleFilterCat = function( e, id ){
	if (e) e.preventDefault();
	
	var data = window.bt.getCookie(window.bt.dataCookieName);
	var filterCats = data.filterCats?data.filterCats:[];
	
	var elem = document.getElementById(id);
	if (window.bt.hasClass(elem,'closed')){
		window.bt.removeClass(elem,'closed');
		if (filterCats.indexOf(id)<0) filterCats.push(id);
	}
	else{
		window.bt.addClass(elem,'closed');
		if (filterCats.indexOf(id)>=0) filterCats.splice(filterCats.indexOf(id),1);
	}
	data.filterCats = filterCats;
	window.bt.setCookie(window.bt.dataCookieName,data);
};
window.bt.checkPresetFilters = function(){
	// Get set filters
	var filters = [];
	var cbs = document.getElementsByClassName('bt-filter-checkbox');
	for (var i=0; i<cbs.length; i++){
		if (cbs[i].checked && (filters.indexOf(cbs[i].id)<0)) filters.push( cbs[i].id );
	}
	// Replace filters in cookie if there are any set
	if (filters.length > 0) {
		var data = window.bt.getCookie(window.bt.dataCookieName);
		data.filters = filters;
		window.bt.setCookie(window.bt.dataCookieName,data);
	}
};
window.bt.changeFilter = function( e ){
	var target = (e.currentTarget)?e.currentTarget:e.srcElement;
	var id = target.id;
	if (id){
		var data = window.bt.getCookie(window.bt.dataCookieName);
		filters = data.filters?data.filters:[];

		if (target.checked){
			if (filters.indexOf(id)<0) filters.push(id);
		}
		else{
			if (filters.indexOf(id)>=0) filters.splice(filters.indexOf(id),1);
		}
		
		data.filters = filters;
		window.bt.setCookie(window.bt.dataCookieName,data);
		
		window.bt.applyFilters();
	}
};
window.bt.applyFilters = function(){
	// Get results
	var results = document.getElementsByClassName('bt-result');
	if (results.length==0) return;
	
	// Get filters
	var data = window.bt.getCookie(window.bt.dataCookieName);
	var filtersAll = data.filters?data.filters:['btActive'];

	// Filter map
	// OR within group, AND between groups
	var filterMap = [
		{
			btAuckland: 'campus-auckland',
			btManawatu: 'campus-manawatu',
			btWellington: 'campus-wellington',
			btNonCampus: 'campus-none'
		},
		{
			btAudienceFutureStudents: 'audience-future-student',
			btAudienceStudent: 'audience-student',
			btAudienceStaff: 'audience-staff',
			btAudiencePublic: 'audience-public'
		},
		{
			btStatusPublished: 'published',
			btStatusReview: 'review',
			btStatusDraft: 'draft'
		},
		{
			btActive: 'active',
			btExpired: 'expired'
		}
	];
	
	// Step each result
	var resultCount = results.length;
	var visibleCount = resultCount;
	for (var i=0; i<resultCount; i++){
	
		var showResult = true;
		results[i].style.display = 'block';
		var tags = results[i].getAttribute('data-tags').split(',');
			
		// Step filter groups
		for (var g=0; g<filterMap.length; g++){
		
			var affectedByFilters = false;
			var anyGroupFilterSet = false;
			var filterGroup = filterMap[g];
		
			// Step user-selected filters
			for (var j=0; j<filtersAll.length; j++){
				if (filterGroup.hasOwnProperty(filtersAll[j])){
					affectedByFilters = true;
					if (tags.indexOf(filterGroup[filtersAll[j]])>=0) anyGroupFilterSet = true;
				}
			}
			
			if (affectedByFilters && !anyGroupFilterSet) showResult = false;
		}
		
		if (!showResult){
			results[i].style.display = 'none';
			visibleCount--;
		}
	}
	// Show or hide 'no results'
	document.getElementById('btResult-none').style.display = (visibleCount>0)?'none':'block';
}
window.bt.changeOrder = function( e ){
	// Determine selected order
	var target = (e.currentTarget)?e.currentTarget:e.srcElement;
	s = target.value;
	
	// Save cookie value
	var data = window.bt.getCookie(window.bt.dataCookieName);
	if (data.order!=s){
		data.order = s;
		window.bt.setCookie(window.bt.dataCookieName,data);
	}
	
	window.bt.applyOrder();
}
window.bt.applyOrder = function(){
	// Determine selected order
	var data = window.bt.getCookie(window.bt.dataCookieName);
	var s = data.order?data.order:'date-';

	// Change the select box
	document.getElementById('btOrder').value=s;
	
	// Grab results
	var p = document.getElementById('btResults');
	var r = p.childNodes;
	var ra = [];
	for (var i in r) if (r[i].nodeType == 1) ra.push(r[i]); // Ignore text nodes
	
	// Order results
	if (s=='date'){
		ra.sort(function(a,b){
			var av = parseInt(a.getAttribute('data-date'));
			var bv = parseInt(b.getAttribute('data-date'));
			if (av == bv) return 0;
			return (av < bv)?-1:1; // Reverse
		});
	}
	else if (s=='date-'){
		ra.sort(function(a,b){
			var av = parseInt(a.getAttribute('data-date'));
			var bv = parseInt(b.getAttribute('data-date'));
			if (av == bv) return 0;
			return (av > bv)?-1:1;
		});
	}
	else if (s=='name'){
		ra.sort(function(a,b){
			var av = a.getAttribute('data-name');
			var bv = b.getAttribute('data-name');
			return av.localeCompare(bv);
		});
	}
	else if (s=='name-'){
		ra.sort(function(a,b){
			var av = a.getAttribute('data-name');
			var bv = b.getAttribute('data-name');
			return -av.localeCompare(bv);
		});
	}
	else if (s=='status'){
		ra.sort(function(a,b){
			var av = a.getAttribute('data-status');
			var bv = b.getAttribute('data-status');
			return -av.localeCompare(bv);
		});
	}
	
	// Order DOM
	for (i = 0; i < ra.length; ++i) p.appendChild(ra[i]);
};
window.bt.view = function (e,id){
	window.bt.action(event,'view',{id:id});
}
window.bt.hasClass = function( elem, name ){
	var arr = elem.className.split(' ');
    if (arr.indexOf(name) > -1) return true;
	return false;
};
window.bt.addClass = function( elem, name ){
	var arr = elem.className.split(' ');
    if (arr.indexOf(name) == -1) elem.className += ' '+name;
};
window.bt.removeClass = function( elem, name ){
	var arr = elem.className.split(' ');
    if (arr.indexOf(name) > -1){
		arr.splice( arr.indexOf(name), 1 );
		elem.className = arr.join(' ');
	}
};

window.bt.shortlist = function(e,id){
	var target = (e.currentTarget)?e.currentTarget:e.srcElement;
	
	var data = window.bt.getCookie(window.bt.dataCookieName);
	var sl = data.saved?data.saved:[];
	
	if (window.bt.hasClass(target, 'bt-saved')){
		window.bt.removeClass( target, 'bt-saved' );
		if (sl.indexOf(id)>=0) sl.splice(sl.indexOf(id),1);
	}
	else{
		window.bt.addClass( target, 'bt-saved' );
		if (sl.indexOf(id)<0) sl.push(id);
	}
	
	data.saved = sl;
	window.bt.setCookie(window.bt.dataCookieName,data);
	
	window.bt.applyShortlist();
};

window.bt.shortlistRemove = function(e,id){
	if (e) e.preventDefault();

	var elem = document.getElementById('btSave-'+id);
	if (elem) window.bt.removeClass( elem, 'bt-saved' );

	var data = window.bt.getCookie(window.bt.dataCookieName);
	var sl = data.saved?data.saved:[];
	if (sl.indexOf(id)>=0) sl.splice(sl.indexOf(id),1);
	data.saved = sl;
	window.bt.setCookie(window.bt.dataCookieName,data);

	window.bt.applyShortlist();
};

window.bt.applyShortlist = function(){
	var data = window.bt.getCookie(window.bt.dataCookieName);
	var saved = data.saved?data.saved:[];
	
	// Color shortlist buttons
	for (var i=0; i<saved.length; i++){
		var elem = document.getElementById('btSave-'+saved[i]);
		if (elem) window.bt.addClass( elem, 'bt-saved' );
	}
	
	// Load shortlist
	if (document.getElementById('btShortlist')){
		var saved = data.saved?data.saved:[];
console.log('About to load shortlist');
		window.bt.actionOnElem(null,'shortlist','btShortlist',{ids:saved.join(',')});
	}
}
window.bt.onNavigate = function( prevHash ){
	if(window.location.hash) window.bt.load({hash:window.location.hash});
	else window.bt.load();
};

window.bt.postRenderSearch = function(){

	// Check if filters have been preset
	window.bt.checkPresetFilters();

	// Get cookie data
	var data = window.bt.getCookie(window.bt.dataCookieName);

	// Set filters
	if (data.filters){
		// Checkboxes
		for (var i=0; i<data.filters.length; i++){
			var cb = document.getElementById(data.filters[i]);
			if (cb && !cb.checked) cb.checked = true;
		}
	}
	else{
		data.filters = [];
	}

	// Apply filters
	window.bt.applyFilters();
	
	// Set order
	window.bt.applyOrder();
	
	// Apply shortlist
	window.bt.applyShortlist();

};
window.bt.postRenderView = function(){
	// Shortlist
	window.bt.applyShortlist();
};