import {
  getStorage,
  setStorage,
  removeStorage
} from '../utils/index.js'

class base {
  constructor() {
    this.storageKey = '';
    this.storageInfo = {};
    this.defaultInfo = {};
  }

  /**
   * 装载属性，只会压入配置过的属性
   * @param {*} obj 
   */
  load(obj) {
    let info = {};
    //合并，后覆盖前，所以必定有默认key
    Object.assign(info, this.defaultInfo, obj)
    for (let key in this.defaultInfo) {
      if (typeof (info[key]) !== 'undefined') {
        this.storageInfo[key] = info[key];
      }
    }
  }

  /**
   * 追加
   * @param {*} obj 
   */
  addInfo(obj) {
    let info = {};
    Object.assign(info, this.defaultInfo, this.storageInfo, obj)
    for (let key in this.defaultInfo) {
      if (typeof (info[key]) !== 'undefined') {
        this.storageInfo[key] = info[key];
      }
    }
  }

  //获取类里面的属性
  getInfo(key) {
    if (key && (key in this.storageInfo)) {
      return this.storageInfo[key]
    } else {
      return this.storageInfo
    }
  }

  //保存到缓存，传进来>默认值
  setStorage(obj) {
    if (obj) {
      this.load(obj);
    }
    if (!this.storageKey) {
      return false;
    }
    if (Object.getOwnPropertyNames(this.storageInfo).length === 0) {
      return false;
    }
    setStorage(this.storageKey, this.storageInfo);
  }

  //追加到缓存，传进来>缓存>默认值
  addStorage(obj) {
    if (!this.storageKey) {
      return false;
    }
    let info = {};
    let curStorageInfo = getStorage(this.storageKey);
    Object.assign(info, curStorageInfo, obj)
    this.load(obj);
    setStorage(this.storageKey, this.storageInfo);
  }

  //获取缓存的属性
  getStorage(key) {
    if (!this.storageKey) {
      return false;
    }
    let info = getStorage(this.storageKey);
    Object.assign(this.storageInfo, info)
    if (key && (key in this.storageInfo)) {
      return this.storageInfo[key]
    } else {
      return this.storageInfo
    }
  }

  //销毁缓存的属性
  destroyStorage() {
    if (!this.storageKey) {
      return false;
    }
    removeStorage(this.storageKey)
    this.load();
  }
}

export default base;