reactNativeAsyncStorageCache.ts

/**
 * Copyright 2020, 2022, 2024, Optimizely
 *
 * 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
 *
 * https://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 PersistentKeyValueCache from './persistentKeyValueCache';
import { getDefaultAsyncStorage } from '../../utils/import.react_native/@react-native-async-storage/async-storage';

export default class ReactNativeAsyncStorageCache implements PersistentKeyValueCache {
  private asyncStorage = getDefaultAsyncStorage();

  async contains(key: string): Promise<boolean> {
    return (await this.asyncStorage.getItem(key)) !== null;
  }

  async get(key: string): Promise<string | undefined> {
    return (await this.asyncStorage.getItem(key)) || undefined;
  }

  async remove(key: string): Promise<boolean> {
    if (await this.contains(key)) {
      await this.asyncStorage.removeItem(key);
      return true;
    }
    return false;
  }

  set(key: string, val: string): Promise<void> {
    return this.asyncStorage.setItem(key, val);
  }
}