/**
 * EGroupware Notifications - clientside javascript
 *
 * @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
 * @package notifications
 * @subpackage ajaxpoup
 * @link http://www.egroupware.org
 * @author Cornelius Weiss <nelius@cwtech.de>, Christian Binder <christian@jaytraxx.de>, Ralf Becker <rb@stylite.de>
 * @version $Id$
 */

/**
 * Installs app.notifications used to poll notifications from server and display them
 */
(function()
{
	var notifymessages = {};
	var EGW_BROWSER_NOTIFY_ALLOWED = 0;

	/**
	 * Constructor inits polling and installs handlers, polling frequence is passed via data-poll-interval of script tag
	 */
	function notifications() {
		var notification_script = document.getElementById('notifications_script_id');
		var popup_poll_interval = notification_script && notification_script.getAttribute('data-poll-interval');
		this.setTimeout(popup_poll_interval || 60);
		jQuery('#egwpopup_ok_button').click(jQuery.proxy(this.button_ok, this));

		jQuery('#notificationbell').click(jQuery.proxy(this.display, this));
		// query notifictions now
		this.get_notifications();
	};

	/**
	 * Poll server for new notifications
	 */
	notifications.prototype.get_notifications = function()
	{
		egw.json(
			"notifications.notifications_ajax.get_notifications",
			this.check_browser_notify()
		).sendRequest(true);
	};

	/**
	 * Poll server in given frequency via Ajax
	 * @param _i
	 */
	notifications.prototype.setTimeout = function(_i) {
		var self = this;
		window.setTimeout(function(){
			self.get_notifications();
			self.setTimeout(_i);
		}, _i*1000);
	};

	/**
	 * Check to see if browser supports / allows desktop notifications
	 */
	notifications.prototype.check_browser_notify = function() {
		return egw.checkNotification();
	};

	/**
	 * Display notifications window
	 */
	notifications.prototype.display = function() {
		var $egwpopup,$egwpopup_list,
		egwpopup_ok_button, $message,
		$close;

		$egwpopup = jQuery(document.getElementById("egwpopup"));
		$egwpopup_list = jQuery(document.getElementById("egwpopup_list"));
		egwpopup_ok_button = document.getElementById("egwpopup_ok_button");
		for(var show in notifymessages)
		{
			$message = jQuery(document.createElement('div'))
					.addClass('egwpopup_message')
					.attr('id', 'egwpopup_message_'+show);
			$message[0].innerHTML = notifymessages[show]['message'];
			$close = jQuery(document.createElement('span'))
					.addClass('egwpopup_close')
					.click(jQuery.proxy(this.button_close, this))
					.prependTo($message);
			// Activate links
			jQuery('div[data-id],div[data-url]', $message).on('click',
				function() {
					if(this.dataset.id)
					{
						egw.open(this.dataset.id,this.dataset.app);
					}
					else
					{
						egw.open_link(this.dataset.url,'_blank',this.dataset.popup);
					}
				}
			).addClass('et2_link');
			$egwpopup_list.append($message);
		}
		this.counterUpdate();
		if(window.webkitNotifications && window.webkitNotifications.checkPermission() != EGW_BROWSER_NOTIFY_ALLOWED &&
			jQuery('#desktop_perms').length == 0)
		{
			var label = 'Desktop notifications';
			try {
				if(egw) label = egw.lang(label);
			} catch(err) {}
			var desktop_button = jQuery('<button id="desktop_perms">' + label + '</button>')
				.click(function() {
					window.webkitNotifications.requestPermission();
					jQuery(this).hide();
				});
			desktop_button.appendTo(jQuery(egwpopup_ok_button).parent());
		}
	};

	/**
	 * Display or hide notifcation-bell
	 *
	 * @param {string} mode "active"
	 */
	notifications.prototype.bell = function(mode) {
		var notificationbell;
		notificationbell = document.getElementById("notificationbell");
		if(mode == "active") {
			notificationbell.style.display = "inline";
		} else {
			notificationbell.style.display = "none";
		}
	};

	/**
	 * Callback for OK button: confirms message on server and hides display
	 */
	notifications.prototype.button_ok = function() {
		var egwpopup;
		var egwpopup_message;
		egwpopup = document.getElementById("egwpopup");
		egwpopup_message = document.getElementById("egwpopup_message");
		egwpopup_message.scrollTop = 0;

		for(var confirmed in notifymessages) break;
		var request = egw.json("notifications.notifications_ajax.confirm_message", [confirmed]);
		request.sendRequest();
		delete notifymessages[confirmed];

		for(var id in notifymessages) break;
		if (id == undefined) {
			egwpopup.style.display = "none";
			egwpopup_message.innerHTML = "";
			this.bell("inactive");
		} else {
			this.display();
		}
	};

	/**
	 * Callback for close button: close and mark all as read
	 */
	notifications.prototype.button_close = function(_event) {
		var egwpopup_message = _event.target.parentNode;
		var id = egwpopup_message.id.replace(/egwpopup_message_/ig,'');
		var request = egw.json("notifications.notifications_ajax.confirm_message", [id]);
		request.sendRequest();
		delete (notifymessages[id]);
		egwpopup_message.style.display = 'none';
		this.bell("inactive");
		this.counterUpdate();
	};

	/**
	 * Add message to internal display-queue
	 *
	 * @param _id
	 * @param _message
	 * @param _browser_notify
	 */
	notifications.prototype.append = function(_id, _message, _browser_notify) {
		if(!this.check_browser_notify() || typeof notifymessages[_id] != 'undefined')
		{
			notifymessages[_id] = {message:_message};
			return;
		}

		var data = this.getData(_message);
		// Prevent the same thing popping up multiple times
		notifymessages[_id] = {message:_message, data: data};
		// Notification API
		if(_browser_notify)
		{
			egw.notification(data.title, {
				tag: data.app+":"+_id,
				body: data.message,
				icon: data.icon,
				onclose:function(e){
					// notification id
					var id = this.tag.split(":");
					// confirm the message
					var request = egw.json("notifications.notifications_ajax.confirm_message", [id[1]]);
					request.sendRequest();
				},
				onclick:function(e){
					// notification id
					var id = this.tag.split(":");

					// get the right data from messages object
					var notify = notifymessages[id[1]];

					if (!notifymessages[id[1]]) this.close();

					if (notify && notify.data && notify.data.id)
					{
						egw.open(notify.data.id, notify.data.app);
					}
					else if (notify && notify.data)
					{
						egw.open_link(notify.data.url,'_blank',notify.data.popup);
					}

					var request = egw.json("notifications.notifications_ajax.confirm_message", [id[1]]);
					request.sendRequest();
					delete notifymessages[id[1]];
					this.close();
				}
			});
		}
	};

	/**
	 * Extract useful data out of HTML message
	 *
	 * @param {type} _message
	 * @returns {notificationajaxpopup_L15.notifications.prototype.getData.data}
	 */
	notifications.prototype.getData = function (_message) {
		var dom = jQuery(document.createElement('div')).html(_message);;
		var link = dom.find('div[data-id],div[data-url]');
		var data = {
			message: dom.text(),
			title: link.text(),
			icon: link.find('img').attr('src')
		};
		jQuery.extend(data,link.data());
		return typeof data == 'object'? data: {};
	};

	/**
	 * toggle notifications container
	 */
	notifications.prototype.toggle = function ()
	{
		var $egwpopup = jQuery('#egwpopup');
		if ($egwpopup.length>0) $egwpopup.slideToggle('fast');
	};

	/**
	 * Set new state of notifications counter
	 */
	notifications.prototype.counterUpdate = function ()
	{
		var $egwpopup_fw_notifications = jQuery('#egwpopup_fw_notifications');
		if (Object.entries(notifymessages))
		{
			$egwpopup_fw_notifications.addClass('egwpopup_notify');
			$egwpopup_fw_notifications.text(Object.entries(notifymessages).length);
		}
		else
		{
			$egwpopup_fw_notifications.text(0);
			$egwpopup_fw_notifications.removeClass('egwpopup_notify');
		}
	};

	var lab = egw_LAB || $LAB;
	var self = notifications;
	lab.wait(function(){
		if (typeof window.app == 'undefined') window.app = {};
		window.app.notifications = new self();
		// toggle notifications bar
		jQuery('.egwpopup_toggle').click(function(){window.app.notifications.toggle();});
		jQuery('#egwpopup_fw_notifications').click(function(){window.app.notifications.toggle();});
	});
})();