/*
 * Copyright 2014 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the 'License');
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an 'AS IS' BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
'use strict';

module.exports = function () {
    var granted = false;
    if ('Notification' in window) {
        granted = (window.Notification.permission === 'granted');

        if (!granted && window.Notification.permission !== 'denied') {
            window.Notification.requestPermission(function (permission) {
                granted = (permission === 'granted');
            });
        }
    }

    this.notify = function(title, options) {
        if (granted) {
            var note = new window.Notification(title, options);
            if (options.url !== null) {
                note.onclick = function() {
                    window.focus();
                    window.open(options.url, '_self');
                };
            }
            if (options.timeout > 0) {
                note.onshow = function() {
                    setTimeout(function() {
                        note.close();
                    }, options.timeout);
                };
            }
        }
    };
};