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gaia/tv_apps/browser/js/sync/bookmarks.js

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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+'use strict';
+
+/* exported SyncBookmark */
+/* global SyncBrowserDB */
+/* global SyncDsHelper */
+
+var SyncBookmark = (function () {
+  var syncDataStore;
+
+  function updateWrapper(data) {
+    return new Promise(resolve => {
+      if (data.deleted) {
+        SyncBrowserDB.removeBookmark(data.id, () => {
+          resolve();
+        });
+      } else {
+        SyncBrowserDB.updateRawBookmark(data, () => {
+          resolve();
+        });
+      }
+    });
+  }
+
+  function handleTask(task) {
+    return new Promise((resolve, reject) => {
+      var data = [];
+      if (task.data && task.data.fxsyncRecords) {
+        for (var key in task.data.fxsyncRecords) {
+          data.push(task.data.fxsyncRecords[key]);
+        }
+      }
+      switch(task.operation) {
+      case 'update':
+      case 'add':
+        Promise.all(data.map(updateWrapper)).then(resolve);
+        break;
+      case 'clear':
+        // Ignore clear operation.
+        resolve();
+        break;
+      case 'remove':
+        getBookmarkByDsId(task.id, bookmark => {
+          if (bookmark) {
+            SyncBrowserDB.removeBookmark(bookmark.id, () => {
+              resolve();
+            });
+          }
+        });
+        break;
+      case 'done':
+        resolve();
+        break;
+      }
+    });
+  }
+
+  function getBookmarkByDsId(dsid, callback) {
+    SyncBrowserDB.getBookmark({bmkUri: dsid}, bookmark => {
+      if (bookmark) {
+        callback(bookmark);
+      } else {
+        var specialType =
+          ['query', 'microsummary', 'folder', 'livemark', 'separator'];
+        var isSpecialType = specialType.some(value => {
+          return dsid.indexOf(value + '|') === 0;
+        });
+        var tmp = dsid.split('|');
+        if (isSpecialType && tmp.length === 2) {
+          var fxsyncId = tmp[1];
+          SyncBrowserDB.getBookmark(fxsyncId, callback);
+        } else {
+          console.warn('trying to delete a unknown type?', dsid);
+          callback(null);
+        }
+      }
+    });
+  }
+
+  function start() {
+    if (syncDataStore) {
+      return Promise.resolve();
+    }
+    syncDataStore = new SyncDsHelper('bookmarks_store');
+    return syncDataStore.init().then(() => {
+      return syncDataStore.start(handleTask);
+    });
+  }
+
+  function stop() {
+    if (!syncDataStore) {
+      return Promise.reject('Uninitialized DataStore');
+    }
+    return syncDataStore.stop().then(() => {
+      syncDataStore = null;
+      return SyncBrowserDB.clearBookmarks();
+    });
+  }
+
+  return {
+    start: start,
+    stop: stop
+  };
+})();