import { ref } from 'vue'

/**
 * T040: APS 排产进度 Hook
 *
 * 使用场景：详情页中查询排产进度数据，超时 5s 降级展示"排产进度暂不可用"
 * 不阻塞详情页整体渲染
 */
export interface ApsScheduleResult {
  scheduleStatus: string
  scheduleProgress: number
  scheduleDate: string | null
  message: string | null
}

export function useApsSchedule() {
  const scheduleData = ref<ApsScheduleResult | null>(null)
  const loading = ref(false)
  const timeout = ref(false)

  let timer: ReturnType<typeof setTimeout> | null = null

  /**
   * 查询排产进度
   * @param forecastOrderId 预测单ID
   * @param timeoutMs 超时时间（毫秒），默认 5000ms
   */
  async function fetchSchedule(forecastOrderId: number, timeoutMs = 5000) {
    loading.value = true
    timeout.value = false
    scheduleData.value = null

    // 模拟 API 调用 + 超时降级
    const fetchPromise = new Promise<ApsScheduleResult>((resolve, reject) => {
      // 模拟 APS 排产进度查询
      timer = setTimeout(() => {
        // 模拟返回数据
        resolve({
          scheduleStatus: 'SCHEDULED',
          scheduleProgress: 75,
          scheduleDate: '2026-07-20',
          message: null,
        })
      }, 1500)
    })

    const timeoutPromise = new Promise<never>((_, reject) => {
      setTimeout(() => {
        reject(new Error('TIMEOUT'))
      }, timeoutMs)
    })

    try {
      const result = await Promise.race([fetchPromise, timeoutPromise])
      scheduleData.value = result
    } catch {
      timeout.value = true
      scheduleData.value = null
    } finally {
      loading.value = false
      if (timer) clearTimeout(timer)
    }
  }

  /**
   * 手动重试
   */
  function retry(forecastOrderId: number) {
    return fetchSchedule(forecastOrderId)
  }

  return {
    scheduleData,
    loading,
    timeout,
    fetchSchedule,
    retry,
  }
}