/**
 * Copyright (c) 2015-present, Parse, LLC.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @flow
 */
import { isLocalDatastoreKey } from './LocalDatastoreUtils';
const LocalDatastoreController = {
  fromPinWithName(name
  /*: string*/
  )
  /*: Array<Object>*/
  {
    const values = wx.getStorageSync(name);

    if (!values) {
      return [];
    }

    return values;
  },

  pinWithName(name
  /*: string*/
  , value
  /*: any*/
  ) {
    try {
      wx.setStorageSync(name, value);
    } catch (e) {// Quota exceeded
    }
  },

  unPinWithName(name
  /*: string*/
  ) {
    wx.removeStorageSync(name);
  },

  getAllContents()
  /*: Object*/
  {
    const res = wx.getStorageInfoSync();
    const keys = res.keys;
    const LDS = {};

    for (const key of keys) {
      if (isLocalDatastoreKey(key)) {
        LDS[key] = wx.getStorageSync(key);
      }
    }

    return LDS;
  },

  getRawStorage()
  /*: Object*/
  {
    const res = wx.getStorageInfoSync();
    const keys = res.keys;
    const storage = {};

    for (const key of keys) {
      storage[key] = wx.getStorageSync(key);
    }

    return storage;
  },

  clear()
  /*: Promise*/
  {
    const res = wx.getStorageInfoSync();
    const keys = res.keys;
    const toRemove = [];

    for (const key of keys) {
      if (isLocalDatastoreKey(key)) {
        toRemove.push(key);
      }
    }

    const promises = toRemove.map(this.unPinWithName);
    return Promise.all(promises);
  }

};
module.exports = LocalDatastoreController;