Liferay.Session = {
	autoExtend: false,
	sessionTimeout: 0,
	sessionTimeoutWarning: 0,
	redirectOnExpire: false,

	init: function(params) {
		var instance = this;

		params = params || {};
		instance.autoExtend = params.autoExtend || instance.autoExtend;

		instance._timeout = params.timeout || instance.sessionTimeout;
		instance._warning = params.timeoutWarning || instance.sessionTimeoutWarning;

		instance.sessionTimeout = instance._timeout * 60000;
		instance.sessionTimeoutWarning = instance._warning * 60000;
		instance._timeoutDiff = instance.sessionTimeout - instance.sessionTimeoutWarning;

		instance._currentTime = instance.sessionTimeoutWarning;

		instance.redirectOnExpire = params.redirectOnExpire || instance.redirectOnExpire;

		instance._cookieKey = 'LFR_SESSION_STATE_' + themeDisplay.getUserId();

		instance.banner = new jQuery;

		var urlBase = themeDisplay.getPathMain() + '/portal/';

		instance._sessionUrls = {
			expire: urlBase + 'expire_session',
			extend: urlBase + 'extend_session'
		};

		instance._stateCheck = setTimeout(
			function() {
				instance.checkState();
			},
			instance._timeoutDiff);

		var timeoutMinutes = instance._timeout;
		var timeLeft = instance._warning;

		instance._warningText = Liferay.Language.get('warning-your-session-will-expire', ['[$SPAN$]', timeoutMinutes]);
		instance._warningText = instance._warningText.replace(/\[\$SPAN\$\]/, '<span class="countdown-timer"></span>');

		instance._toggleText = {
			hide: Liferay.Language.get('hide'),
			show: Liferay.Language.get('show')
		};

		instance._expiredText = Liferay.Language.get('warning-your-session-has-expired');
		instance._extendText = Liferay.Language.get('extend');

		instance.setCookie();
	},

	checkState: function() {
		var instance = this;

		var currentTime = new Date().getTime();
		var sessionState = instance.getCookie();
		var newWaitTime = instance.sessionTimeoutWarning;
		var timeDiff = 0;

		clearTimeout(instance._stateCheck);

		if (sessionState == 'expired') {
			instance.expire();
		}
		else {
			timeDiff = currentTime - sessionState;

			if (!instance.autoExtend) {
				if ((timeDiff + 100) >= instance.sessionTimeoutWarning) {
						instance.warn();
				}
				else {
					newWaitTime = (instance.sessionTimeoutWarning - timeDiff) + 10000;

					instance._stateCheck = setTimeout(
						function() {
							instance.checkState();
						},
					newWaitTime);
				}
			}
			else {
				instance.extend();
			}
		}
	},

	getCookie: function() {
		var instance = this;

		return jQuery.cookie(instance._cookieKey) || 0;
	},

	expire: function() {
		var instance = this;

		document.title = instance._originalTitle;

		jQuery.ajax(
			{
				url: instance._sessionUrls.expire,
				success: function() {
					if (instance.redirectOnExpire) {
						location.href = themeDisplay.getURLHome();
					}
				}
			}
		);

		instance.setCookie('expired');
	},

	extend: function() {
		var instance = this;

		if (instance._countdownTimer) {
			clearInterval(instance._countdownTimer);
		}

		jQuery.ajax(
			{
				url: instance._sessionUrls.extend
			}
		);

		document.title = instance._originalTitle;

		instance._currentTime = instance.sessionTimeoutWarning;

		clearTimeout(instance._sessionExpired);

		if (instance._sessionWarning) {
			clearTimeout(instance._sessionWarning);
		}

		instance._sessionWarning = setTimeout(
			function() {
				if (!instance.autoExtend) {
					instance.warn();
				}
				else {
					instance.extend();
				}
			},
			instance._timeoutDiff
		);

		instance.setCookie();
	},

	setCookie: function(status) {
		var instance = this;

		var currentTime = new Date().getTime();

		var options = {
			secure : (window.location.protocol.indexOf('https') > -1)
		};

		jQuery.cookie(instance._cookieKey, status || currentTime, options);
	},

	warn: function() {
		var instance = this;

		instance.banner = new Liferay.Notice(
			{
				content: instance._warningText,
				closeText: instance._extendText,
				onClose: function() {
					instance.extend();
				},
				toggleText: false
			}
		);

		instance._counter();

		instance._sessionExpired = setTimeout(
			function() {
				instance.expire();
			},
			instance.sessionTimeoutWarning);
	},

	_counter: function() {
		var instance = this;

		var banner = instance.banner;
		if (banner.length) {
			instance._counterText = banner.find('.countdown-timer');
			instance._originalTitle = document.title;
			var interval = 1000;

			instance._counterText.text(instance._setTime());
			document.title = instance.banner.text();

			instance._countdownTimer = setInterval(
				function() {
					var time = instance._setTime();

					instance._currentTime = instance._currentTime - interval;

					if (instance._currentTime > 0) {
						instance._counterText.text(time);
						document.title = instance.banner.text();
					}
					else {
						instance.banner.html(instance._expiredText);
						instance.banner.toggleClass('popup-alert-notice').toggleClass('popup-alert-warning');

						if (instance._countdownTimer) {
							clearInterval(instance._countdownTimer);
						}
					}
				},
			interval
			);
		}
	},

	_formatNumber: function(num) {
		var instance = this;

		if (!Liferay.Util.isArray(num)) {
			if (num <= 9) {
				num = '0' + num;
			}
		}
		else {
			num = jQuery.map(num, instance._formatNumber);
		}
		return num;
	},

	_setTime: function() {
		var instance = this;

		var amount = instance._currentTime;

		if (amount <= 0) {

		}
		else {
			var days=0, hours=0, minutes=0, seconds=0, output='';

			// Remove the milliseconds
			amount = Math.floor(amount/1000);

			hours = Math.floor(amount/3600);
			amount = amount%3600;

			minutes = Math.floor(amount/60);
			amount = amount%60;

			seconds = Math.floor(amount);

			return instance._formatNumber([hours, minutes, seconds]).join(':');
		}
	},

	_banner: [],
	_currentTime: 0,
	_originalTitle: '',
	_sessionUrls: {},
	_timeout: 0,
	_timeoutDiff: 0,
	_warning: 0
};