/**
 * Language
 */
var Language = {
	en: {
		trackingCookies: {
			request: "This website uses <a href='/en/Cookies'>cookies</a> for statistical-purposes. Do you agree?",
			moreInformation: "More about the cookie law.",
			allow: "Yes",
			deny: "No"
		}
	},
	nl: {
		trackingCookies: {
			request: "Deze website maakt gebruik van <a href='/Cookies'>cookies</a> voor statistiek-doeleinden. Gaat u hiermee akkoord?",
			moreInformation: "Meer over de cookiewet",
			allow: "Ja",
			deny: "Nee"
		}
	}
};

/**
 * Cookie checker
 * Checks if the user allows tracking cookies by asking it using an information bar.
 * Usage:
 *   var cc = new CookieCheck({ infoPage: 'http://www.example.com/about-cookies' });
 * To know when a user accepts or denies these cookies you can add a callback:
 *   cc.addCallback(Function myFunction[, boolean allwaysCall]);
 * The callback function receives one argument:
 * - true when the user accepts it
 * - false when the user denies it
 * - null when we don't know yet (only in combination with the allwaysCall boolean)
 * If you also want to know if we don't know yet if the user allows it you can pass a boolean true
 * to the addCallback method else the callback function is only called when the user actually clicks
 * the bar (accepts or denies) or when the user already had accepted or denied.
 */
var CookieCheck = Class.create({
	cookieName: 'allow-tracking-cookies',
	cookieValue: null,
	checkValue: null,
	callbacks: [],
	options: {
		infoPage: null // page to link to for more information
	},
	initialize: function (options) {
		if (typeof options === 'object') {
			Object.extend(this.options, options);
		}
		this.cookieValue = Cookie.get(this.cookieName);
		if (!(!!~['true','false'].indexOf(this.cookieValue))) {
			document.observe('dom:loaded', function() {
				cc.ask();
			});
		} else {
			this.checkValue = this.cookieValue === 'true' ? true : false;
		}
	},
	// adds a callback function
	addCallback: function (callback, allwaysCall) {
		if (typeof callback === 'function') {
			if (allwaysCall || this.checkValue !== null) {
				callback(this.checkValue);
			}
			this.callbacks.push(callback);
		} else {
			throw "CookieCheck::addCallback(): callback is not a function";
		}
	},
	// sets the new value, saves it and calls callbacks
	setValue: function (value) {
		var sValue, bValue;
		if (typeof value === 'boolean') {
			bValue = value;
			sValue = value ? 'true' : 'false';
		} else {
			if (value === 'true') {
				bValue = true;
				sValue = value;
			} else {
				bValue = false;
				sValue = 'false';
			}
		}
		this.checkValue = bValue;
		Cookie.set(this.cookieName, sValue);
		$A(this.callbacks).each(function (cb) { cb(bValue); });
	},
	// creates an information bar with clickable links
	ask: function () {
		var barClick = function (event, value) {
			event.stop();
			var el = Event.element(event);

			this.setValue(value);
			bar.select('a').invoke('stopObserving');
			bar.remove();
			$('centerbox').removeClassName('cookiebarmargin');

			if (value === 'false') {
				window.open(el.href);
			}
		}, bar = new Element('div', {
			'class': 'information-bar',
			id: 'tracking-cookies'
		}), request, links;

		bar.addClassName('information-bar');
		request = new Element('p', { 'class': 'text' }).update(Language.trackingCookies.request);
		if (this.options.infoPage) {
			request.insert('&nbsp;').insert(
				new Element('a', {
					href: this.options.infoPage
				}).update(Language.trackingCookies.moreInformation)
			);
		}
		bar.insert(request);

		links = new Element('ul', {
			'class': 'links'
		}).insert(
			new Element('li').update(
				new Element('a', { 'class': 'allow', href: '#allow' })
					.update(Language.trackingCookies.allow)
					.observe('click', barClick.bindAsEventListener(this, 'true'))
			)
		).insert(
			new Element('li').update(
				new Element('a', { 'class': 'extern external', href: 'http://sitestat.com/privacy/cookie-opt-out.php?lang=nl_NL'})
					.update(Language.trackingCookies.deny)
					.observe('click', barClick.bindAsEventListener(this, 'false'))
			)
		);
		links.addClassName('links');
		bar.insert(links);
		if($('pagename')){
			$('pagename').insert({
				after: bar
			});
		} else {
			$('centerbox').insert({
				before: bar
			});
		}
		$('centerbox').addClassName('cookiebarmargin');
	}
});

/**
 * Static Cookie functions
 */
var Cookie = {
	// default values
	days: 365 * 30, path: '/',
	// set a cookie, returns its value
	set: function setCookie(name, value, days, path) {
		days = days ? days : Cookie.days;
		path = path ? path : Cookie.path;
		if(typeof name != 'undefined' && typeof value != 'undefined') {
			document.cookie = name+'='+value+'; expires='+
				Cookie.getTimeFromDays(days)+'; path='+path;
			return value;
		}
		return null;
	},
	// get the value of a cookie
	get: function getCookie(name) {
		if(( result = $A(document.cookie.split('; ')).find(function(cookie) {
				return cookie.startsWith(name);
			}) )) {
			return result.replace(result.split('=').first()+'=', '');
		}
		return null;
	},
	// unset/remove a cookie
	unset: function unsetCookie(name) { Cookie.set(name,'', -1); },
	// get correctly formatted timestamp relative to now with the specified days:
	getTimeFromDays: function getTimeFromDays(days) {
		var date = new Date();
		date.setTime(date.getTime()+(60*60*24*days*1000));
		return date.toGMTString();
	}
};


try {
	var lang = 'en';
	Language = lang ? (Language[lang] || Language.en) : Language.en;
	var cc = new CookieCheck({
		infoPage: typeof cookiePolicyPage != 'undefined' ? cookiePolicyPage : null
	})
} catch(e) {
	console.dir(e);
}

document.observe('dom:loaded', function() {
	// Doorklik links voorzien van anoniem attribuut
	if(cc.checkValue === null) {	// either we don't know (null);
		$$('a[href^="http://nl.sitestat.com/rivm/rivm-nl/"]').each(function(a) {
			a.href = a.href + "&ns_nc=1";
	    });
    }

	// Statistics
	cc.addCallback(function (trackingCookiesAllowed) {
		if (trackingCookiesAllowed !== false) { // either we don't know (null) or it's allowed
			var script = document.createElement("script");
			script.type = "text/javascript";
			script.async = true;
			script.src = '/js/sitestat.js?_v=-1344436226';
			document.getElementsByTagName("body")[0].appendChild(script);
		}
	}, true);
});