--- /dev/null
+/*
+ *
+ * Copyright 2017 RIFT.IO Inc
+ *
+ * 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.
+ *
+ */
+import appConfiguration from '../utils/appConfiguration'
+
+let versionKeyPrefix = null;
+
+const localCache = new class {
+ get(key) {
+ let valueAsString = localStorage.getItem(key);
+ return valueAsString ? JSON.parse(valueAsString) : undefined;
+ }
+ set(key, val) {
+ localStorage.setItem(key, typeof val === 'string' ? val : JSON.stringify(val));
+ }
+}();
+
+let objCache = new Map();
+
+const storeCache = new class {
+ get(key) {
+ if (objCache[key]) {
+ objCache[key].timerId && clearTimeout(objCache[key].timerId)
+ objCache[key].timerId = setTimeout((key) => delete objCache[key], 2000)
+ return objCache[key].value;
+ }
+ const obj = localCache.get(key);
+ if (obj) {
+ objCache[key] = {
+ value: obj,
+ timerId: setTimeout((key) => delete objCache[key], 2000)
+ }
+ return obj;
+ }
+ }
+ set(key, obj) {
+ setTimeout(localCache.set, 100, key, obj);
+ objCache[key] = {
+ value: obj,
+ timerId: setTimeout((key) => delete objCache[key], 2000)
+ }
+ }
+ init(version) {
+ versionKeyPrefix = 's-v-' + version;
+ const currentStoreVersion = localStorage.getItem('store-version');
+ if (currentStoreVersion !== version) {
+ let removeItems = [];
+ for (let i = 0; i < localStorage.length; ++i) {
+ let key = localStorage.key(i);
+ if (key.startsWith('s-v-')) {
+ removeItems.push(key);
+ }
+ }
+ removeItems.forEach((key) => localStorage.removeItem(key));
+ localStorage.setItem('store-version', version);
+ }
+ }
+}();
+
+class StoreCache {
+ constructor(name) {
+ this.name = 's-v-' + name;
+ }
+ get(key) {
+ return storeCache.get(this.name + key);
+ }
+ set(key, obj) {
+ storeCache.set(this.name + key, obj);
+ }
+ init() {
+ return versionKeyPrefix ? Promise.resolve() : new Promise(
+ (resolve, reject) => {
+ appConfiguration.get().then((config) => {
+ storeCache.init(config.version);
+ resolve();
+ })
+ }
+ )
+ }
+}
+
+module.exports = StoreCache;
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