Merge pull request #89 from mh7777777/bfLocalStorageImplementation

Changing from indexeddb to BF's local storage.

Author: mustafa-hamza

package-lock.json

@@ -1,49 +1,12 @@
 var cache = {
-  db: null,
-  dbName: '',
-  indexName: '',
-  objectStoreName: '',
-  perm: 'readwrite',
-  init: function (options, callback) {
-    if (!options || !callback) return;
-    console.warn(options);
-
-    options.dbName ? this.dbName = options.dbName : callback('DB Name required', null);
-    options.indexName ? this.indexName = options.indexName : callback('Index Name required', null);
-    options.objectStoreName ? this.objectStoreName = options.objectStoreName : callback('Object Store Name required', null);
-    this.perm = options.perm ? options.perm : 'readwrite';
-    console.warn('cacheInit');
-    var _this = this;
-    var request = window.indexedDB.open(this.dbName, 3);
-    request.onerror = function (event) {
-      console.error(event);
-    };
-    // runs on init or version update
-    request.onupgradeneeded = function (event) {
-      _this.db = event.target.result;
-      var objectStore = _this.db.createObjectStore(_this.objectStoreName);
-      objectStore.createIndex(_this.indexName, _this.indexName, {
-        unique: false
-      });
-    };
-    request.onsuccess = function () {
-      _this.db = request.result;
-      callback(null);
-    }
+  storeName: 'cacheStore',
+  saveCache: function(object) {
+    window.buildfire.localStorage.setItem(`${this.storeName}_${window.buildfire.getContext().instanceId}`, JSON.stringify(object), () => {});
   },
-  saveCache: function (object) {
-    if (!this.db) throw new Error('Error saving cache: db ref not found');
-    var cacheTransaction = this.db.transaction(this.objectStoreName, this.perm);
-    var cacheObjStore = cacheTransaction.objectStore(this.objectStoreName);
-    cacheObjStore.put(object, this.indexName);
-  },
-  getCache: function (callback) {
-    if (!this.db) throw new Error('Error getting cache: db ref not found');
-    var cacheTransaction = this.db.transaction(this.objectStoreName, this.perm);
-    var cacheObjStore = cacheTransaction.objectStore(this.objectStoreName);
-    var request = cacheObjStore.get(this.indexName);
-    request.onsuccess = function (event) {
-      callback(null, event.target.result);
-    }
+  getCache: function(callback) {
+    window.buildfire.localStorage.getItem(`${this.storeName}_${window.buildfire.getContext().instanceId}`, (error, value) => {
+      if (error) return callback(error, null);
+      callback(null, JSON.parse(value));
+    });
   }
 };

widget/cache.js

@@ -291,16 +291,10 @@
                     viewedItems.init();
 
                     var success = function (result) {
-                        cache.init({
-                            dbName: 'rss.cache',
-                            indexName: 'feed',
-                            objectStoreName: 'feed.cache'
-                        }, function () {
-                            cache.getCache(function (err, data) {
-                                // if the rss feed url has changed, ignore the cache and update when fetched 
-                                if (err || !data || !WidgetHome.data.content || data.rssUrl != WidgetHome.data.content.rssUrl) return;
-                                getFeedDataSuccess(data);
-                            });
+                        cache.getCache(function (err, data) {
+                          // if the rss feed url has changed, ignore the cache and update when fetched 
+                          if (err || !data || !WidgetHome.data.content || data.rssUrl != WidgetHome.data.content.rssUrl) return;
+                          getFeedDataSuccess(data);
                         });
 
                         if (Object.keys(result.data).length > 0) {