import config from '../config'

const DEFAULT_CACHE_TIME = config.storageExpire[config.env]

export const createStorage = ({ prefixKey = '' } = {}) => {
  return {
    prefixKey: prefixKey,
    getKey(key: string) {
      return `${this.prefixKey}${key}`.toUpperCase()
    },
    set(key: string, value: IAnyObject | string | number | boolean, expire: number | null = DEFAULT_CACHE_TIME) {
      const stringData = JSON.stringify({
        value,
        expire: expire !== null ? new Date().getTime() + expire * 1000 : null,
      })
      wx.setStorageSync(this.getKey(key), stringData)
    },
    get<T>(key: string, def = null) {
      const item = wx.getStorageSync(this.getKey(key))
      if (item) {
        try {
          const data = JSON.parse(item)
          const { value, expire } = data
          // 在有效期内直接返回
          if (expire === null || expire >= Date.now()) {
            return value as T
          }
          this.remove(this.getKey(key))
        } catch (e) {
          return def
        }
      }
      return def
    },
    remove(key: string) {
      try {
        wx.removeStorageSync(this.getKey(key))
      } catch (e) {
        return
      }
    },
    clear() {
      wx.clearStorage()
    },
  }
}

export const storage = createStorage()

export default storage