// versionUpdatePlugin.js
const fs = require('fs')
const path = require('path')

const writeVersion = (versionFile, content) => {
  // 寫(xiě)入文件
  fs.writeFile(versionFile, content, (err) => {
    if (err) throw err
  })
}

export default (options) => {
  let config

  return {
    name: 'version-update',

    configResolved(resolvedConfig) {
      // 存儲(chǔ)最終解析的配置
      config = resolvedConfig
    },

    buildStart() {
      // 生成版本信息文件路徑
      const file = config.publicDir + path.sep + 'version.json'
      // 這里使用編譯時(shí)間作為版本信息
      const content = JSON.stringify({ version: options.version })

      if (fs.existsSync(config.publicDir)) {
        writeVersion(file, content)
      } else {
        fs.mkdir(config.publicDir, (err) => {
          if (err) throw err
          writeVersion(file, content)
        })
      }
    },
  }
}

// vite.config.js
export default defineConfig((config) => {
  const now = new Date().getTime()
  return {
    ...
    define: {
      // 定義全局變量
      __APP_VERSION__: now,
    },
    plugins: [
      ...
      versionUpdatePlugin({
        version: now,
      }),
    ],
    ...
  }
})

const router = useRouter()
// 這里在路由全局前置守衛(wèi)中檢查版本
router.beforeEach(async () => {
  await versionCheck()
})

// 版本監(jiān)控
const versionCheck = async () => {
  if (import.meta.env === 'development') return
  const response = await axios.get('version.json')
  // eslint-disable-next-line no-undef
  if (__APP_VERSION__ !== response.data.version) {
    // eslint-disable-next-line no-undef
    ElMessage({
      message: '發(fā)現(xiàn)新內(nèi)容，自動(dòng)更新中...',
      type: 'success',
      showClose: true,
      duration: 1500,
      onClose: () => {
        window.location.reload()
      },
    })
  }
}