/**
 * 点数获取（任务）配置
 *
 * 后端 /point/earnconfig 一次返回签到、邀请与看广告任务的开关、额度与今日进度，
 * entry_enabled 为 false 表示全部任务都关闭，此时所有入口都不渲染。
 *
 * 结果放在 useState 里共享，避免 header、充值页、账单页各请求一次。
 */
export function useEarnPoints() {
  const { post } = useApi()
  const config = useState('earn-points-config', () => null)
  const loading = useState('earn-points-loading', () => false)

  const entryEnabled = computed(() => Boolean(config.value?.entry_enabled))
  const adTask = computed(() => config.value?.ad || { enabled: false })
  const inviteTask = computed(() => config.value?.invite || { enabled: false })
  const checkinTask = computed(() => config.value?.checkin || { enabled: false })
  const balancePoints = computed(() => Number(config.value?.balance?.points || 0))

  /**
   * @param {boolean} force 忽略已有缓存重新拉取（领取到账后刷新用）
   */
  async function load(force = false) {
    if (loading.value) return config.value
    if (config.value && !force) return config.value
    loading.value = true
    try {
      const res = await post('/point/earnconfig', {})
      config.value = res.data || {}
    } catch (e) {
      // 拉取失败按未开启处理，宁可不显示入口，也不给一个点进去报错的入口
      config.value = {
        entry_enabled: false,
        ad: { enabled: false },
        invite: { enabled: false },
        checkin: { enabled: false },
      }
    } finally {
      loading.value = false
    }
    return config.value
  }

  return { config, loading, entryEnabled, adTask, inviteTask, checkinTask, balancePoints, load }
}