<script setup lang="ts">
import dayjs from 'dayjs'
import { api } from '@/utils/request'
import {
  useOrderStore,
  type OrderRecord,
  type OrderDetail,
  type RawOrderDetail,
} from '@/stores/order'
import CascadeFilter from '@/components/CascadeFilter.vue'
import {
  SearchOutlined,
  ReloadOutlined,
  EyeOutlined,
  CopyOutlined,
} from '@ant-design/icons-vue'

const store = useOrderStore()

// Detail drawer
const drawerVisible = ref(false)
const drawerLoading = ref(false)
const orderDetail = ref<OrderDetail | null>(null)
const rawDetail = ref<RawOrderDetail | null>(null)
let detailRequestId = 0

const orderStatusMap: Record<number, { text: string; color: string }> = {
  1: { text: '待付款', color: 'orange' },
  2: { text: '支付失败', color: 'red' },
  3: { text: '已支付', color: 'blue' },
  4: { text: '待发货', color: 'cyan' },
  5: { text: '已发货', color: 'geekblue' },
  6: { text: '取消申请中', color: 'volcano' },
  7: { text: '已取消', color: 'default' },
  8: { text: '已完成', color: 'green' },
  9: { text: '发货前取消', color: 'default' },
}

const columns = [
  { title: 'ID', dataIndex: 'id', width: 80, fixed: 'left' as const },
  { title: '公司', key: 'company', width: 120 },
  { title: '平台', key: 'platform', width: 100 },
  { title: '店铺', key: 'store', width: 140 },
  { title: '平台订单ID', key: 'platform_order_id', width: 180, ellipsis: true },
  { title: '订单金额', key: 'total_amount', width: 120 },
  { title: '已支付', key: 'total_paid', width: 120 },
  { title: '总折扣', key: 'total_discount', width: 120 },
  { title: '状态', key: 'status', width: 110 },
  { title: '创建时间', key: 'created_date', width: 160 },
  { title: '付款时间', key: 'paid_date', width: 160 },
  { title: '操作', key: 'action', width: 100, fixed: 'right' as const },
]

const orderItemColumns = [
  { title: 'SKU', dataIndex: 'product_sku', width: 140, ellipsis: true },
  { title: '平台商品ID', dataIndex: 'platform_product_id', width: 160, ellipsis: true },
  { title: '数量', dataIndex: 'quantity', width: 70 },
  { title: '单价', key: 'unit_price', width: 100 },
  { title: '优惠', key: 'item_discount', width: 100 },
  { title: '小计', key: 'item_total', width: 100 },
]

// RangePicker dayjs 桥接（undefined 替代 null，匹配 antdv 类型要求）
const createdDateRange = computed({
  get: () => {
    if (!store.filters.created_date_range) return undefined
    return store.filters.created_date_range.map((d) => dayjs(d)) as [
      dayjs.Dayjs,
      dayjs.Dayjs,
    ]
  },
  set: (val) => {
    store.filters.created_date_range = val
      ? [val[0].format('YYYY-MM-DD'), val[1].format('YYYY-MM-DD')]
      : null
  },
})

const paidDateRange = computed({
  get: () => {
    if (!store.filters.paid_date_range) return undefined
    return store.filters.paid_date_range.map((d) => dayjs(d)) as [
      dayjs.Dayjs,
      dayjs.Dayjs,
    ]
  },
  set: (val) => {
    store.filters.paid_date_range = val
      ? [val[0].format('YYYY-MM-DD'), val[1].format('YYYY-MM-DD')]
      : null
  },
})

onMounted(() => {
  store.loadLookups()
  store.fetchOrders()
})

function handleSearch() {
  store.pagination.page = 1
  store.fetchOrders()
}

function handleReset() {
  store.resetFilters()
  store.fetchOrders()
}

function handlePageChange(page: number, pageSize: number) {
  store.pagination.page = page
  store.pagination.per_page = pageSize
  store.fetchOrders()
}

function formatAmount(val: string | null | undefined) {
  if (!val || val === '0' || val === '0.00') return '-'
  return val
}

function formatTime(time: string | null) {
  if (!time) return '-'
  return time.replace('T', ' ').substring(0, 16)
}

async function handleCopyOrderId(platformOrderId: string) {
  try {
    await navigator.clipboard.writeText(platformOrderId)
    message.success('已复制平台订单ID')
  } catch {
    message.error('复制失败')
  }
}

async function handleViewDetail(record: { id: number }) {
  const currentRequestId = ++detailRequestId
  drawerVisible.value = true
  drawerLoading.value = true
  orderDetail.value = null
  rawDetail.value = null

  const [normalResult, rawResult] = await Promise.allSettled([
    api.get<OrderDetail>(`/api/v1/orders/${record.id}`),
    api.get<RawOrderDetail>(`/api/v1/raw/orders/${record.id}`),
  ])

  // 竞态保护：若用户已切换到另一订单详情，丢弃过期响应
  if (currentRequestId !== detailRequestId) return

  if (normalResult.status === 'fulfilled') {
    orderDetail.value = normalResult.value
  } else {
    message.error('获取订单详情失败')
  }

  if (rawResult.status === 'fulfilled') {
    rawDetail.value = rawResult.value
  } else {
    console.warn('加载原始数据(raw)失败', rawResult.reason)
  }

  drawerLoading.value = false
}
</script>

<template>
  <div>
    <h2 class="text-xl font-semibold mb-4">订单管理</h2>

    <!-- Filter area -->
    <a-card class="mb-6">
      <a-form layout="inline" @submit.prevent="handleSearch">
        <a-form-item>
          <CascadeFilter v-model="store.cascadeValue" />
        </a-form-item>
        <a-form-item label="订单状态">
          <a-select
            v-model:value="store.filters.order_status_id"
            placeholder="全部"
            allow-clear
            style="width: 130px"
          >
            <a-select-option
              v-for="(item, key) in orderStatusMap"
              :key="key"
              :value="Number(key)"
            >
              {{ item.text }}
            </a-select-option>
          </a-select>
        </a-form-item>
        <a-form-item label="平台订单ID">
          <a-input
            v-model:value="store.filters.platform_order_id"
            placeholder="精确搜索"
            allow-clear
            @press-enter="handleSearch"
          />
        </a-form-item>
        <a-form-item label="创建时间">
          <a-range-picker
            v-model:value="createdDateRange"
            format="YYYY-MM-DD"
          />
        </a-form-item>
        <a-form-item label="付款时间">
          <a-range-picker
            v-model:value="paidDateRange"
            format="YYYY-MM-DD"
          />
        </a-form-item>
        <a-form-item>
          <a-space>
            <a-button type="primary" html-type="submit">
              <template #icon><SearchOutlined /></template>
              搜索
            </a-button>
            <a-button @click="handleReset">
              <template #icon><ReloadOutlined /></template>
              重置
            </a-button>
          </a-space>
        </a-form-item>
      </a-form>
    </a-card>

    <!-- Table -->
    <a-card>
      <a-table
        :columns="columns"
        :data-source="store.orders"
        :loading="store.loading"
        :pagination="false"
        :scroll="{ x: 1360 }"
        row-key="id"
      >
        <template #bodyCell="{ column, record }">
          <template v-if="column.key === 'company'">
            {{ store.companyMap.get(record.company_id) || record.company_id }}
          </template>
          <template v-else-if="column.key === 'platform'">
            {{ store.platformMap.get(record.platform_id) || record.platform_id }}
          </template>
          <template v-else-if="column.key === 'store'">
            {{ store.storeMap.get(record.store_id) || record.store_id }}
          </template>
          <template v-else-if="column.key === 'platform_order_id'">
            {{ record.platform_order_id }}
          </template>
          <template v-else-if="column.key === 'total_amount'">
            {{ formatAmount(record.total_amount) }}
          </template>
          <template v-else-if="column.key === 'total_paid'">
            {{ formatAmount(record.total_paid) }}
          </template>
          <template v-else-if="column.key === 'total_discount'">
            {{ formatAmount(record.total_discount) }}
          </template>
          <template v-else-if="column.key === 'status'">
            <a-tag :color="orderStatusMap[record.order_status_id]?.color || 'default'">
              {{ orderStatusMap[record.order_status_id]?.text || `状态 ${record.order_status_id}` }}
            </a-tag>
          </template>
          <template v-else-if="column.key === 'created_date'">
            {{ formatTime(record.created_date) }}
          </template>
          <template v-else-if="column.key === 'paid_date'">
            {{ formatTime(record.paid_date) }}
          </template>
          <template v-else-if="column.key === 'action'">
            <a-button
              type="link"
              size="small"
              @click="handleViewDetail(record as OrderRecord)"
            >
              <template #icon><EyeOutlined /></template>
              查看
            </a-button>
          </template>
        </template>
      </a-table>

      <div class="mt-4 flex justify-end">
        <a-pagination
          :current="store.pagination.page"
          :page-size="store.pagination.per_page"
          :total="store.pagination.total"
          show-size-changer
          show-quick-jumper
          :show-total="(total: number) => `共 ${total} 条`"
          @change="handlePageChange"
        />
      </div>
    </a-card>

    <!-- Detail drawer -->
    <a-drawer
      title="订单详情"
      :open="drawerVisible"
      :width="720"
      @close="drawerVisible = false"
    >
      <a-spin :spinning="drawerLoading">
        <template v-if="orderDetail">
          <!-- 基本信息 -->
          <a-descriptions title="基本信息" :column="2" bordered class="mb-4">
            <a-descriptions-item label="ID">{{ orderDetail.id }}</a-descriptions-item>
            <a-descriptions-item label="状态">
              <a-tag
                :color="orderStatusMap[orderDetail.order_status_id]?.color || 'default'"
              >
                {{
                  orderStatusMap[orderDetail.order_status_id]?.text
                    || `状态 ${orderDetail.order_status_id}`
                }}
              </a-tag>
            </a-descriptions-item>
            <a-descriptions-item label="平台订单ID" :span="2">
              {{ orderDetail.platform_order_id }}
              <CopyOutlined
                class="ml-2 cursor-pointer text-blue-500"
                @click="handleCopyOrderId(orderDetail.platform_order_id)"
              />
            </a-descriptions-item>
            <a-descriptions-item label="公司">
              {{
                store.companyMap.get(orderDetail.company_id) || orderDetail.company_id
              }}
            </a-descriptions-item>
            <a-descriptions-item label="平台">
              {{
                store.platformMap.get(orderDetail.platform_id)
                  || orderDetail.platform_id
              }}
            </a-descriptions-item>
            <a-descriptions-item label="店铺">
              {{
                store.storeMap.get(orderDetail.store_id) || orderDetail.store_id
              }}
            </a-descriptions-item>
            <a-descriptions-item label="买家ID">
              {{ orderDetail.buyer_user_id || '-' }}
            </a-descriptions-item>
            <a-descriptions-item label="支付方式">
              {{ orderDetail.payment_method_id }}
            </a-descriptions-item>
            <a-descriptions-item label="预售">
              {{ orderDetail.presale ? '是' : '否' }}
            </a-descriptions-item>
          </a-descriptions>

          <!-- 金额信息 -->
          <a-descriptions title="金额信息" :column="2" bordered class="mb-4">
            <a-descriptions-item label="订单总金额">
              {{ formatAmount(orderDetail.total_amount) }}
            </a-descriptions-item>
            <a-descriptions-item label="已支付金额">
              {{ formatAmount(orderDetail.total_paid) }}
            </a-descriptions-item>
            <a-descriptions-item label="总折扣">
              {{ formatAmount(orderDetail.total_discount) }}
            </a-descriptions-item>
            <a-descriptions-item label="实收金额">
              {{ formatAmount(orderDetail.total_received) }}
            </a-descriptions-item>
            <a-descriptions-item label="运费">
              {{ formatAmount(orderDetail.freight_fee) }}
            </a-descriptions-item>
            <a-descriptions-item label="税费">
              {{ formatAmount(orderDetail.tax_fee) }}
            </a-descriptions-item>
            <a-descriptions-item label="优惠金额">
              {{ formatAmount(orderDetail.discount_fee) }}
            </a-descriptions-item>
            <a-descriptions-item label="佣金">
              {{ formatAmount(orderDetail.commission_fee) }}
            </a-descriptions-item>
            <a-descriptions-item label="优惠券金额">
              {{ formatAmount(orderDetail.coupon_amount) }}
            </a-descriptions-item>
            <a-descriptions-item label="代金券金额">
              {{ formatAmount(orderDetail.voucher_amount) }}
            </a-descriptions-item>
          </a-descriptions>

          <!-- 时间与地址 -->
          <a-descriptions title="时间与地址" :column="2" bordered class="mb-4">
            <a-descriptions-item label="创建时间">
              {{ formatTime(orderDetail.created_date) }}
            </a-descriptions-item>
            <a-descriptions-item label="更新时间">
              {{ formatTime(orderDetail.updated_date) }}
            </a-descriptions-item>
            <a-descriptions-item label="付款时间">
              {{ formatTime(orderDetail.paid_date) }}
            </a-descriptions-item>
            <a-descriptions-item label="发货时间">
              {{ formatTime(orderDetail.shipping_date) }}
            </a-descriptions-item>
            <a-descriptions-item label="国家">
              {{ orderDetail.country || '-' }}
            </a-descriptions-item>
            <a-descriptions-item label="省份">
              {{ orderDetail.province || '-' }}
            </a-descriptions-item>
            <a-descriptions-item label="城市">
              {{ orderDetail.city || '-' }}
            </a-descriptions-item>
            <a-descriptions-item label="邮编">
              {{ orderDetail.zipcode || '-' }}
            </a-descriptions-item>
          </a-descriptions>

          <!-- 订单子项 -->
          <h4 class="text-base font-medium mb-2">订单子项</h4>
          <a-table
            :columns="orderItemColumns"
            :data-source="orderDetail.order_items"
            :pagination="false"
            size="small"
            row-key="id"
            class="mb-4"
          >
            <template #bodyCell="{ column, record }">
              <template v-if="column.key === 'unit_price'">
                {{ formatAmount(record.unit_price) }}
              </template>
              <template v-else-if="column.key === 'item_discount'">
                {{ formatAmount(record.discount) }}
              </template>
              <template v-else-if="column.key === 'item_total'">
                {{ formatAmount(record.total) }}
              </template>
            </template>
          </a-table>

          <!-- ext JSON -->
          <a-descriptions title="扩展数据 (ext)" :column="1" bordered class="mb-4">
            <a-descriptions-item>
              <pre v-if="orderDetail.ext" class="m-0 text-xs max-h-80 overflow-auto">{{
                JSON.stringify(orderDetail.ext, null, 2)
              }}</pre>
              <span v-else class="text-gray-400">暂无数据</span>
            </a-descriptions-item>
          </a-descriptions>

          <!-- raw JSON -->
          <a-descriptions title="原始数据 (raw)" :column="1" bordered>
            <a-descriptions-item>
              <pre
                v-if="rawDetail?.raw"
                class="m-0 text-xs max-h-80 overflow-auto"
              >{{ JSON.stringify(rawDetail.raw, null, 2) }}</pre>
              <span v-else class="text-gray-400">暂无数据</span>
            </a-descriptions-item>
          </a-descriptions>
        </template>
      </a-spin>
    </a-drawer>
  </div>
</template>
