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272
gaia/apps/communications/facebook/js/fb_sync_init.js
Executable file
272
gaia/apps/communications/facebook/js/fb_sync_init.js
Executable file
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/* globals NotificationHelper */
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'use strict';
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var fb = window.fb || {};
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var Sync = fb.sync || {};
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fb.sync = Sync;
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(function() {
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var Alarm = Sync.alarm = {};
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var ALARM_ID_KEY = fb.utils.ALARM_ID_KEY;
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var isSyncOngoing = false;
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// This is the amount of hours to wait to retry a sync operation
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var DEFAULT_RETRY_PERIOD = 1;
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// Retry period after timeout (15 minutes)
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var RETRY_PERIOD_TIMEOUT = 0.25;
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// Delay in closing the window
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var CLOSE_DELAY = 5000;
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var FB_TRAY_ICON = '/contacts/style/images/f_logo.png';
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var FB_SYNC_ERROR_PARAM = 'isSyncError';
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Alarm.init = function() {
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fb.init(function fb_alarm_init() {
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if (navigator.mozHasPendingMessage('alarm')) {
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fb.sync.debug('Alarm System Message Received!!!!!');
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navigator.mozSetMessageHandler('alarm', handleAlarm);
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}
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// Workaround for Gecko Bug. mozHasPendingMessage does not work
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// https://bugzilla.mozilla.org/show_bug.cgi?id=802876
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else if (parent.location === window.location) {
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fb.sync.debug('Fb Sync woke up. Alarm ok. mozHasPendingMsg failed');
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// Unfortunately this does not also work
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// navigator.mozSetMessageHandler('alarm', handleAlarm);
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window.setTimeout(function() {
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handleAlarm({
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data: {
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sync: true
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}
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});
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},0);
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}
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else {
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setNextAlarm(true, fb.syncPeriod);
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}
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}); // fb.init
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}; // Alarm.init
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function syncSuccess() {
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fb.sync.debug('Sync finished ok at ', new Date());
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isSyncOngoing = false;
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setNextAlarm(false, fb.syncPeriod, function() {
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closeApp();
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});
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} // syncSuccess function
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function syncError(error) {
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isSyncOngoing = false;
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var theError = error;
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if (!theError || theError.name === 'undefined') {
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theError = {
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name: 'defaultError'
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};
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}
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switch (theError.name) {
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case 'invalidToken':
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fb.sync.debug('Invalid token!!!. Notifying the user');
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// A new alarm is not set. It will be set once the user
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// logs in Facebook one more time
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showNotification({
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title: 'facebook',
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body: 'notificationLogin',
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iconURL: FB_TRAY_ICON + '?' + FB_SYNC_ERROR_PARAM + '=1',
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callback: handleInvalidToken
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});
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break;
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case 'timeout':
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fb.sync.debug('Timeout in sync. Next sync scheduled in 15 minutes');
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scheduleAt(RETRY_PERIOD_TIMEOUT, closeApp);
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break;
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case 'defaultError':
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window.console.error('Error reported in synchronization: ',
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JSON.stringify(theError));
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showNotification({
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title: 'facebook',
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body: 'syncError',
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iconURL: FB_TRAY_ICON + '?' + FB_SYNC_ERROR_PARAM + '=1',
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callback: function() {
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scheduleAt(fb.syncPeriod, closeApp);
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}
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});
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break;
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}
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} // syncError function
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function handleAlarm(message) {
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// First is checked if this is a sync alarm
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if (message.data && message.data.sync === true &&
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isSyncOngoing === false && navigator.onLine === true) {
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isSyncOngoing = true;
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fb.sync.debug('Starting sync at: ', new Date());
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ackAlarm(function alarm_process() {
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fb.sync.start({
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success: syncSuccess,
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error: syncError
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});
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});
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}
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else if (isSyncOngoing === true) {
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fb.sync.debug('There is an ongoing synchronization. Trying it later');
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scheduleAt(DEFAULT_RETRY_PERIOD, closeApp);
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}
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else if (navigator.onLine === false) {
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fb.sync.debug('Navigator is not online. Setting an alarm for next hour');
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scheduleAt(DEFAULT_RETRY_PERIOD, closeApp);
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}
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else {
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fb.sync.debug('Alarm message but apparently was not a sync message');
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closeApp();
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}
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}
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function alarmSetErrorCb(notifyParent, e) {
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if (notifyParent) {
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window.setTimeout(function() {
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parent.fb.sync.onAlarmError(e.target.error);
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},0);
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}
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else {
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window.console.error('<<FBSync>> Error while setting next alarm: ',
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e.target.error.name);
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}
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}
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function scheduleAt(hours, callback) {
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var nextUpdate = Date.now() + hours * 60 * 60 * 1000;
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var scheduledDate = new Date(nextUpdate);
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fb.sync.debug('Forcing scheduling an alarm at: ', scheduledDate);
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var req = addAlarm(scheduledDate);
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req.onsuccess = function() {
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fb.sync.debug('--> Next Sync forced to happen at: ', scheduledDate);
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if (typeof callback === 'function') {
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callback();
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}
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};
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req.onerror = function(e) {
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alarmSetErrorCb(false, e);
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};
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}
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function ackAlarm(callback) {
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// The next alarmid is removed
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// Continuation is enabled even if we cannot remove the id
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window.asyncStorage.removeItem(ALARM_ID_KEY, callback, callback);
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}
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// Adds an alarm at the specified datetime ensuring any existing alarm
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// it is removed and ensuring the id is stored on the asyncStorage
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function addAlarm(at) {
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var outReq = new fb.utils.Request();
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window.setTimeout(function do_add_alarm() {
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window.asyncStorage.getItem(ALARM_ID_KEY, function set_alarm(id) {
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if (id) {
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navigator.mozAlarms.remove(Number(id));
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}
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var req = navigator.mozAlarms.add(at, 'honorTimezone', {
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sync: true
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});
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// Setting the new alarm
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req.onsuccess = function() {
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window.asyncStorage.setItem(ALARM_ID_KEY, String(req.result),
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function success_store() {
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outReq.done(req.result);
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},
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function error_store(e) {
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var errorParam = {
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target: {
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error: e || {
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name: 'AsyncStorageError'
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}
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}
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};
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outReq.failed(errorParam);
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});
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};
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req.onerror = function(e) {
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outReq.failed(e);
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};
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});
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}, 0);
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return outReq;
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}
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function setNextAlarm(notifyParent, hours, callback) {
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fb.utils.getLastUpdate(function(timestamp) {
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var nextUpdate = timestamp + hours * 60 * 60 * 1000;
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var scheduledDate = new Date(nextUpdate);
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fb.sync.debug('Going to set a new alarm at: ', scheduledDate);
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var req = addAlarm(scheduledDate);
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req.onsuccess = function() {
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if (notifyParent === true) {
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window.setTimeout(function() {
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parent.fb.sync.onAlarmScheduled(scheduledDate);
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},0);
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}
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fb.sync.debug('--> Next Sync will happen at: ', scheduledDate);
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if (typeof callback === 'function') {
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callback();
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}
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};
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req.onerror = function(e) {
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alarmSetErrorCb(notifyParent, e);
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};
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}); // Get last update
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} // doSetNextAlarm
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function showNotification(params) {
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navigator.mozApps.getSelf().onsuccess = function(evt) {
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var app = evt.target.result;
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var iconURL = app.installOrigin + params.iconURL;
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var options = {
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body: params.body,
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icon: iconURL
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};
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/*jshint unused:false*/
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NotificationHelper.send(params.title, options)
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.then(notification => {
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if (typeof params.callback === 'function') {
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params.callback();
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}
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});
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};
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}
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function closeApp() {
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// Wait some seconds to avoid any kind of race condition or console error
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window.setTimeout(window.close, CLOSE_DELAY);
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}
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function handleInvalidToken() {
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// TODO: Reset token and other stuff in order to better inform the user
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closeApp();
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}
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// Everything starts
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Alarm.init();
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})();
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