caimei-applets-store/common/storage.js

import { encrypt, decrypt } from '@/common/crypto.js'

// 在开发环境下不需要加密数据
const encryptFlag = false

// 预设字段头
const prefix = 'HEHE_'

// 缓存有效期 默认有效期为15天
const expiredTime = 15 * 24 * 60 * 60 * 1000


// 从缓存中读取数据（期限）
export function setStorage(key, value, options = {}) {
    if (!options.expiredTime) {
        options.expiredTime = expiredTime
    }
    const nowTime = Date.now()
    // 加密
    if (encryptFlag) {
        value = encrypt(value)
    }
    const payload = {
        expiredTime: nowTime + options.expiredTime,
        data: value
    }
    key = prefix + key
    uni.setStorageSync(key, payload)
}

// 将数据添加到缓存中（期限）
export function getStorage(key) {
    key = prefix + key
    const nowTime = Date.now()
    const payload = uni.getStorageSync(key)
    if (nowTime > payload.expiredTime) {
        uni.removeStorageSync(key)
        return null
    }

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

    return payload.data
}

const install = Vue => {
    Vue.prototype.$setStorage = setStorage
    Vue.prototype.$getStorage = getStorage
}

export default install