import { ref, reactive } from 'vue'
import { useRouter } from 'vue-router'
import { showToast, showSuccessToast } from 'vant'
import { getStatusApi, submitInvoiceApplyApi } from '@/services/modules/invoiceInformation'
import { getFaceAuthResultApi } from '@/services/modules/faceRecognition'
import type { PushRecordIdRequest } from '@/services/modules/invoiceInformation/type'
import { useUserStore } from '@/stores/modules/user'

/* ========================== 类型定义 ========================== */

interface ToStatus {
  eventStatus?: string
  invoiceStatus?: string
  isIdImgReady?: boolean
  [key: string]: any
}

type FaceAuthRzzt = 'REQUIRED_AUTHENTICATION' | 'NO_REQUIRED_AUTHENTICATION'

interface FaceAuthResultData {
  success?: boolean
  rzzt?: FaceAuthRzzt
  msg?: string
  lowCertLevel?: boolean
}

/* ========================== 主 Hook ========================== */

export function useInvoice() {
  const userStore = useUserStore()
  const router = useRouter()

  /* ------------------ 基础状态 ------------------ */

  const isLoading = ref(false)
  const statusMap = ref<ToStatus>({})

  /**
   * 是否需要跳转人脸认证页
   * REQUIRED_AUTHENTICATION => true
   */
  const needFaceAuth = ref(false)

  /**
   * 人脸认证是否已完成 / 无需认证
   * NO_REQUIRED_AUTHENTICATION => true
   * REQUIRED_AUTHENTICATION => false
   */
  const faceAuthResult = ref(false)

  /* ------------------ 请求参数 ------------------ */

  const params = reactive<PushRecordIdRequest>({
    pushRecordId: userStore.pushRecordId,
  })

  /* ============================================================
   * 状态获取层
   * ============================================================ */

  const getStatus = async (): Promise<boolean> => {
    if (!params.pushRecordId) return false

    isLoading.value = true

    try {
      const res = await getStatusApi(params)
      if (res.code !== 0 || !res.data) return false

      statusMap.value = res.data as ToStatus
      return true
    } catch (err) {
      console.error('获取状态失败', err)
      showToast('获取开票状态失败，请稍后重试')
      return false
    } finally {
      isLoading.value = false
    }
  }

  /* ============================================================
   * 人脸认证状态层
   * ============================================================ */

  const getFaceAuthResult = async (): Promise<boolean> => {
    if (!params.pushRecordId) return false

    try {
      const res = await getFaceAuthResultApi(params)

      // data.success 表示认证任务结果；接口返回成功时仍需根据 rzzt 决定下一步
      if (res.code !== 0 || !res.data) return false

      const data = res.data as FaceAuthResultData
      const rzzt = data.rzzt

      // 需要做人脸：按钮可点，但点击后应跳人脸页
      needFaceAuth.value = rzzt === 'REQUIRED_AUTHENTICATION'

      // 无需认证：视为人脸流程已通过，可以直接提交
      faceAuthResult.value = rzzt === 'NO_REQUIRED_AUTHENTICATION'
      return true
    } catch (err: any) {
      console.error('获取认证结果失败', err)
      showToast(err?.message || '获取认证结果失败，请稍后重试')
      return false
    }
  }

  /* ============================================================
   * 核心提交逻辑
   * ============================================================ */

  const doSubmitInvoice = async (): Promise<boolean> => {
    if (!params.pushRecordId) {
      showToast('参数异常')
      return false
    }

    try {
      const res = await submitInvoiceApplyApi(params)

      if (res.code === 0 && res.data) {
        showSuccessToast('提交成功')

        setTimeout(() => {
          userStore.LogOut()
          router.replace({ path: '/success' })
        }, 800)

        return true
      }

      showToast(res.msg || '提交失败')
      return false
    } catch (err: any) {
      console.error('提交失败', err)
      showToast(err?.message || '提交失败')
      return false
    }
  }

  /* ============================================================
   * 流程场景提交
   * ============================================================ */

  const submitInvoiceForce = async () => {
    return await doSubmitInvoice()
  }

  /* ========================== 暴露 API ========================== */

  return {
    /* 状态 */
    statusMap,
    isLoading,

    /**
     * 是否需要去人脸页
     */
    needFaceAuth,

    /**
     * 人脸是否完成 / 无需认证
     */
    faceAuthResult,

    /* 状态获取 */
    getStatus,
    getFaceAuthResult,

    /* 提交 */
    submitInvoiceForce,
  }
}