import type { SubscriptionStatus } from '~/types'

/**
 * 订阅状态校验
 * 通过 /api/subscription/status 查询当前租户应用的订阅状态
 */
export function useSubscription() {
  const status = useState<SubscriptionStatus | null>('subscription-status', () => null)
  const loading = useState<boolean>('subscription-loading', () => false)
  const expired = computed(() => {
    if (!status.value) return false
    return status.value.expired === true || status.value.status === 'expired'
  })

  async function fetchStatus() {
    loading.value = true
    try {
      const res = await $fetch<SubscriptionStatus>('/api/subscription/status')
      status.value = res
      return res
    } catch {
      // 接口异常时默认允许访问
      status.value = { subscribed: true, status: 'active', expired: false }
      return status.value
    } finally {
      loading.value = false
    }
  }

  /** 检查是否过期，过期则跳转续费页 */
  async function checkAndRedirect() {
    await fetchStatus()
    if (expired.value) {
      await navigateTo('/renewal')
    }
  }

  return {
    status,
    loading,
    expired,
    fetchStatus,
    checkAndRedirect
  }
}