/**
 * 购买记录管理 Composable
 */
import { ref } from 'vue'
import { getIssueDrawLogs } from '@/api/appUser'

/**
 * 购买记录管理
 */
export function useRecords() {
    const winRecords = ref([])
    const loading = ref(false)

    /**
     * 获取购买记录
     * @param {string} activityId - 活动ID
     * @param {string} issueId - 期ID
     */
    async function fetchWinRecords(activityId, issueId) {
        if (!activityId || !issueId) return

        loading.value = true
        try {
            const res = await getIssueDrawLogs(activityId, issueId)
            const list = (res && res.list) || (Array.isArray(res) ? res : [])

            // 聚合同一奖品的记录
            const aggregate = {}
            list.forEach(it => {
                const key = it.reward_id || it.id
                if (!aggregate[key]) {
                    aggregate[key] = {
                        id: key,
                        title: it.reward_name || it.title || it.name || '-',
                        image: it.reward_image || it.image || '',
                        count: 0
                    }
                }
                aggregate[key].count += 1
            })

            // const total = list.length || 1
            winRecords.value = Object.values(aggregate).map(it => ({
                ...it,
                // percent: ((it.count / total) * 100).toFixed(1)
            }))
        } catch (e) {
            console.error('fetchWinRecords error', e)
            winRecords.value = []
        } finally {
            loading.value = false
        }
    }

    function clearRecords() {
        winRecords.value = []
    }

    return {
        winRecords,
        loading,
        fetchWinRecords,
        clearRecords
    }
}