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gaia/apps/communications/contacts/js/deferred_actions.js

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+'use strict';
+
+/* global fb */
+/* global fbLoader */
+/* global ImportStatusData */
+/* global LazyLoader */
+/* global Migrator */
+/* global utils */
+
+/* exported DeferredActions */
+
+// Methods not related with the list rendering that must be executed after
+// render to not damage performance.
+var DeferredActions = (function() {
+  var config;
+
+  var TOTAL_RETRIES = 4;
+
+  var execute = function execute() {
+    config = utils.cookie.load();
+
+    if (!fbLoader.loaded) {
+      window.addEventListener('facebookLoaded', doExecute);
+      return;
+    }
+    doExecute();
+  };
+
+  var doExecute = function doExecute() {
+    window.removeEventListener('facebookLoaded', doExecute);
+
+    checkFacebookSynchronization(config);
+    checkVersionMigration(config);
+    checkFacebookSanity(config);
+  };
+
+  // If FB Cleaning data was ongoing we finish it
+  // This avoids keeping the contacts database inconsistent. See bug 1073684
+  function checkFacebookSanity(config) {
+    if (!config || !config.fbCleaningInProgress ||
+        config.fbCleaningInProgress > TOTAL_RETRIES) {
+      return;
+    }
+
+    var req = fb.utils.clearFbData();
+    req.onsuccess = function() {
+      var cleaner = req.result;
+
+      cleaner.onsuccess = function() {
+        console.log('Finished clean Fb data');
+        fb.markFbCleaningInProgress(0);
+      };
+      cleaner.onerror = function() {
+        console.error('FB Cleaner reported an error: ',
+                      req.error && req.error.name);
+        fb.markFbCleaningInProgress(++config.fbCleaningInProgress);
+      };
+    };
+
+    req.onerror = function() {
+      console.error('Unable to start cleaning', req.error && req.error.name);
+      fb.markFbCleaningInProgress(++config.fbCleaningInProgress);
+    };
+  }
+
+  function checkFacebookSynchronization(config) {
+    // Checks if we should set a fb sync alarm when fb sync has been done in ftu
+    if (config && config.fbScheduleDone) {
+      return;
+    }
+
+    LazyLoader.load([
+      '/facebook/js/fb_sync.js',
+      '/shared/js/contacts/import/import_status_data.js'
+    ], performFbSync);
+  }
+
+  function performFbSync() {
+    var fbutils = fb.utils;
+
+    function neverExecuteAgain() {
+      ImportStatusData.remove(fbutils.SCHEDULE_SYNC_KEY);
+      utils.cookie.update({fbScheduleDone: true});
+      navigator.removeIdleObserver(idleObserver);
+      idleObserver = null;
+    }
+
+    var idleObserver = {
+      time: 3,
+      onidle: function onidle() {
+        ImportStatusData.get(fbutils.SCHEDULE_SYNC_KEY).then(function(date) {
+          if (date) {
+            fbutils.setLastUpdate(date, function() {
+              var req = fb.sync.scheduleNextSync();
+              req.onsuccess = neverExecuteAgain;
+              req.onerror = neverExecuteAgain;
+            });
+          } else {
+            neverExecuteAgain();
+          }
+        });
+      }
+    };
+
+    navigator.addIdleObserver(idleObserver);
+  }
+
+  function checkVersionMigration(config) {
+    if (!config || !config.fbMigrated || !config.accessTokenMigrated) {
+      LazyLoader.load('js/migrator.js', function() {
+        Migrator.start(config);
+      });
+    }
+  }
+
+  return {
+    'execute': execute
+  };
+})();