(function init(notifyLib) {
//(function initWebNotification(notifyLib) {
	'use strict';
	app.factory("deskNotification", function onCreateService() {
		var service = {};
		service.allowRequest = true;

		Object.defineProperty(service, 'permissionGranted', {
			get: function getPermission() {
	            var permission = notifyLib.permissionLevel();
	            var permissionGranted = false;
	            if (permission === notifyLib.PERMISSION_GRANTED) {
	                permissionGranted = true;
	            }
	            return permissionGranted;
	        }
	    });

	    var isEnabled = function () {
	        var enabled = notifyLib.isSupported;

	        if (enabled) {
	            enabled = service.permissionGranted;
	        }

	        return enabled;
	    };
		

		var createAndDisplayNotification = function (title, options) {
	        var autoClose = 0;
	        if (options && options.autoClose && (typeof options.autoClose === 'number')) {
	            autoClose = options.autoClose;
	        }
	        notifyLib.config({
	            autoClose: autoClose
	        });

	        var notification = notifyLib.createNotification(title, options);

	        //add onclick handler
	        if (options.onClick && notification && notification.webNotification) {
	        	notification.webNotification.onclick = options.onClick;
	        }

	        return function hideNotification() {
	            notification.close();
	        };
	    };


	    var parseInput = function (argumentsArray) {
	        //callback is always the last argument
	        var callback = argumentsArray.pop();

	        var title = null;
	        var options = null;
	        if (argumentsArray.length === 2) {
	            title = argumentsArray[0];
	            options = argumentsArray[1];
	        } else if (argumentsArray.length === 1) {
	            var value = argumentsArray.pop();
	            if (typeof value === 'string') {
	                title = value;
	                options = {};
	            } else {
	                title = '';
	                options = value;
	            }
	        }

	        //set defaults
	        title = title || '';
	        options = options || {};

	        return {
	            callback: callback,
	            title: title,
	            options: options
	        };
	    };

	    service.showNotification = function () {
	        //convert to array to enable modifications
	        var argumentsArray = Array.prototype.slice.call(arguments, 0);

	        if ((argumentsArray.length >= 1) && (argumentsArray.length <= 3)) {
	            var data = parseInput(argumentsArray);

	            //get values
	            var callback = data.callback;
	            var title = data.title;
	            var options = data.options;

	            var hideNotification = null;
	            if (isEnabled()) {
	                hideNotification = createAndDisplayNotification(title, options);
	                callback(null, hideNotification);
	            } else if (service.allowRequest) {
	                notifyLib.requestPermission(function onRequestDone() {
	                    if (isEnabled()) {
	                        hideNotification = createAndDisplayNotification(title, options);
	                        callback(null, hideNotification);
	                    } else {
	                        callback(new Error('Notifications are not enabled.'), null);
	                    }
	                });
	            } else {
	                callback(new Error('Notifications are not enabled.'), null);
	            }
	        }
	    };

	    return service;

	});
}(window.notify));