caimei-authentic-www/utils/storage.js

import { encrypt, decrypt } from '@/utils/crypto'
const encryptFlag = false

// 将数据添加到缓存中（期限）
export function setStorage(key, value, options = {}) {
  if (!options.expiredTime) {
    // 默认有效期为45天
    options.expiredTime = 45 * 24 * 60 * 60 * 1000
  }
  const nowTime = Date.now()
  // 加密
  if (encryptFlag) {
    value = encrypt(value)
  }
  const payload = {
    expiredTime: nowTime + options.expiredTime,
    data: value,
  }
  key = 'zp_' + key
  localStorage.setItem(key, JSON.stringify(payload))
}

// 从缓存中读取数据（期限）
export function getStorage(key) {
  key = 'zp_' + key
  const nowTime = Date.now()
  let payload = localStorage.getItem(key)

  if (!payload) {
    return null
  }

  payload = JSON.parse(payload)

  if (nowTime > payload.expiredTime) {
    localStorage.removeItem(key)
    return null
  }

  // 解密
  if (encryptFlag) {
    payload.data = JSON.parse(decrypt(payload.data))
  }

  return payload.data
}