import { isVoiceHubApi } from '~/utils/url'

export default defineNuxtPlugin({
  name: 'auth-client',
  enforce: 'pre',
  setup(nuxtApp) {
    // 立即设置请求拦截器，确保在任何API调用之前生效
    const originalFetch = window.fetch
    const errorHandler = useErrorHandler()
    const auth = useAuth()
    const router = useRouter()
    let passwordStateRefresh: Promise<unknown> | null = null

    const refreshPasswordState = async () => {
      if (!passwordStateRefresh) {
        passwordStateRefresh = auth.initAuth(true).finally(() => {
          passwordStateRefresh = null
        })
      }
      return passwordStateRefresh
    }

    const handlePasswordChangeRequired = async (errorData: any) => {
      const requirePasswordChange =
        errorData?.data?.requirePasswordChange === true || errorData?.requirePasswordChange === true

      if (!requirePasswordChange) return false

      // 以服务端刷新后的状态为准，仅刷新失败时回退信任 403 信号，避免过期信号把已改密用户锁在改密页
      let refreshed = true
      try {
        await refreshPasswordState()
      } catch {
        refreshed = false
      }

      if (!refreshed && auth.user.value && auth.user.value.requirePasswordChange !== true) {
        auth.user.value.requirePasswordChange = true
      }

      if (
        auth.user.value?.requirePasswordChange === true &&
        window.location.pathname !== '/change-password'
      ) {
        await router.replace('/change-password')
      }
      return true
    }

    // 拦截window.fetch
    window.fetch = async function (
      input: RequestInfo | URL,
      init?: RequestInit
    ): Promise<Response> {
      // 处理所有API请求
      if (isVoiceHubApi(input)) {
        init = init || {}
        init.headers = init.headers || {}

        // 确保cookie会被发送
        init.credentials = 'include'
      }

      const response = await originalFetch(input, init)

      if (response.status === 403 && isVoiceHubApi(input)) {
        try {
          await handlePasswordChangeRequired(await response.clone().json())
        } catch {
          // 非强制改密的 403 保持原有响应处理。
        }
      }

      // 检查是否为401错误，并且该请求属于VoiceHub API
      if (response.status === 401 && isVoiceHubApi(input)) {
        const currentPath = window.location.pathname

        // 如果在登录页面，解析错误响应体并抛出具体错误信息
        if (currentPath === '/login') {
          try {
            const errorData = await response.clone().json()
            const errorMessage = errorData.message || '登录失败，请检查账号密码'
            return Promise.reject(new Error(errorMessage))
          } catch (parseError) {
            return Promise.reject(new Error('登录失败，请检查账号密码'))
          }
        }

        // 只有在非登录页面才触发认证失效处理
        await errorHandler.handle401Error('您的登录信息已失效，请重新登录')
        return Promise.reject(new Error('Authentication expired'))
      }

      return response
    }

    // 初始化认证状态
    nuxtApp.hook('app:created', async () => {
      await auth.initAuth()

      // 拦截$fetch请求，确保cookie会被发送
      const originalUseFetch = nuxtApp.$fetch
      if (originalUseFetch) {
        nuxtApp.$fetch = async function (request: any, options: any = {}) {
          // 为所有API请求确保cookie会被发送
          if (isVoiceHubApi(request)) {
            options.headers = options.headers || {}
            // 确保cookie会被发送
            options.credentials = 'include'
          }

          try {
            return await originalUseFetch(request, options)
          } catch (error: any) {
            if ((error?.status === 403 || error?.statusCode === 403) && isVoiceHubApi(request)) {
              await handlePasswordChangeRequired(error?.data)
            }

            // 检查是否为401错误，并且该请求属于VoiceHub API
            if ((error?.status === 401 || error?.statusCode === 401) && isVoiceHubApi(request)) {
              const currentPath = window.location.pathname

              // 如果在登录页面，解析错误信息并抛出具体错误
              if (currentPath === '/login') {
                // 从error对象中提取具体错误信息，过滤掉网络请求信息
                let errorMessage =
                  error?.data?.message || error?.message || '登录失败，请检查账号密码'

                // 如果错误信息包含网络请求格式（如 [POST] "/api/auth/login": <no response>），则提取纯净的错误信息
                if (typeof errorMessage === 'string') {
                  // 匹配并移除网络请求前缀格式
                  const cleanMessage = errorMessage
                    .replace(/^\[\w+\]\s+"[^"]+":\s+(<no response>\s+)?/, '')
                    .trim()
                  errorMessage = cleanMessage || '登录失败，请检查账号密码'
                }

                const newError = new Error(errorMessage)
                throw newError
              }

              // 只有在非登录页面才触发认证失效处理
              await errorHandler.handle401Error('您的登录信息已失效，请重新登录')
              throw error
            }
            throw error
          }
        }
      }
    })

    // 全局错误处理
    nuxtApp.hook('vue:error', async (error: any) => {
      if (error?.status === 401 || error?.statusCode === 401) {
        const currentPath = window.location.pathname
        if (currentPath !== '/login') {
          await errorHandler.handle401Error('您的登录信息已失效，请重新登录')
        }
      }
    })
  }
})