import { ref } from 'vue'
import { getActivityListApi, getOssPresignedUrlApi } from '@/utils/api.js'

export function useBanner() {
  const bannerActivities = ref([])

  const loadBannerActivities = async () => {
    try {
      const starId = uni.getStorageSync('star_id') || null
      const res = await getActivityListApi(starId, 'active', 1, 3)
      
      if (res.code === 200 && res.data?.activities) {
        const activities = res.data.activities
        // 并行获取所有 OSS URL
        const urlPromises = activities.map(async (item) => {
          if (!item.cover_image) return { item, url: null }
          try {
            const r = await getOssPresignedUrlApi(item.cover_image, 3600, 'avatar')
            return { item, url: r?.code === 200 && r.data?.url ? r.data.url : null }
          } catch (e) {
            console.error('[useBanner] 获取 OSS URL 失败', e)
            return { item, url: null }
          }
        })
        const results = await Promise.all(urlPromises)
        bannerActivities.value = results.map(({ item, url }) =>
          url ? { ...item, cover_image: url } : item
        )
      }
    } catch (e) {
      console.error('[useBanner] 加载 banner 活动失败', e?.message ?? e)
    }
  }

  return {
    bannerActivities,
    loadBannerActivities,
  }
}