<script setup lang="ts">
import dayjs from 'dayjs'
import { api } from '@/utils/request'
import { useOrderItemStore, type OrderItemRecord } from '@/stores/order-item'
import type { OrderItemDetail } from '@/types/api'
import CascadeFilter from '@/components/CascadeFilter.vue'
import {
  SearchOutlined,
  ReloadOutlined,
  EyeOutlined,
  CopyOutlined,
} from '@ant-design/icons-vue'

const router = useRouter()
const store = useOrderItemStore()

// Detail drawer
const drawerVisible = ref(false)
const drawerLoading = ref(false)
const itemDetail = ref<OrderItemDetail | 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: 100 },
  { title: '平台', key: 'platform', width: 100 },
  { title: '店铺', key: 'store', width: 120 },
  { title: '平台订单ID', key: 'platform_order_id', width: 160, ellipsis: true },
  { title: '子订单ID', key: 'sub_order_id', width: 140, ellipsis: true },
  { title: '平台商品ID', key: 'platform_product_id', width: 140, ellipsis: true },
  { title: 'SKU', key: 'product_sku', width: 120, ellipsis: true },
  { title: '单价', key: 'unit_price', width: 100 },
  { title: '数量', dataIndex: 'quantity', width: 80 },
  { title: '优惠', key: 'discount', width: 100 },
  { title: '小计', key: 'total', width: 100 },
  { title: '创建时间', key: 'created_date', width: 140 },
  { title: '操作', key: 'action', width: 100, fixed: 'right' as const },
]

// RangePicker dayjs 桥接
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
  },
})

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

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

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

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

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 handleCopy(text: string, label: string = 'ID') {
  try {
    await navigator.clipboard.writeText(text)
    message.success(`已复制${label}`)
  } catch {
    message.error('复制失败')
  }
}

function handleGoToOrder(platformOrderId: string) {
  router.push({
    path: '/orders',
    query: { platform_order_id: platformOrderId, auto_submit: '1' },
  })
}

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

  try {
    const detail = await api.get<OrderItemDetail>(`/api/v1/order-items/${record.id}`)
    // 竞态保护
    if (currentRequestId !== detailRequestId) return
    itemDetail.value = detail
  } catch {
    if (currentRequestId !== detailRequestId) return
    message.error('获取订单项详情失败')
  } finally {
    if (currentRequestId === detailRequestId) {
      drawerLoading.value = false
    }
  }
}
</script>

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

    <!-- Filter area -->
    <a-card class="mb-4">
      <a-form layout="inline" class="filter-form" @submit.prevent="handleSearch">
        <a-form-item>
          <CascadeFilter v-model="store.cascadeValue" />
        </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="平台商品ID">
          <a-input
            v-model:value="store.filters.platform_product_id"
            placeholder="精确搜索"
            allow-clear
            @press-enter="handleSearch"
          />
        </a-form-item>
        <a-form-item label="SKU">
          <a-input
            v-model:value="store.filters.product_sku"
            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>
          <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.orderItems"
        :loading="store.loading"
        :pagination="false"
        :scroll="{ x: 1680 }"
        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'">
            <span class="inline-flex items-center gap-1">
              <CopyOutlined
                class="flex-shrink-0 cursor-pointer text-gray-400 hover:text-blue-500"
                @click.stop="handleCopy(record.platform_order_id, '平台订单ID')"
              />
              <a class="truncate text-blue-500 cursor-pointer"
                 @click="handleGoToOrder(record.platform_order_id)">
                {{ record.platform_order_id }}
              </a>
            </span>
          </template>
          <template v-else-if="column.key === 'sub_order_id'">
            <span v-if="record.sub_order_id" class="inline-flex items-center gap-1">
              <CopyOutlined
                class="flex-shrink-0 cursor-pointer text-gray-400 hover:text-blue-500"
                @click.stop="handleCopy(record.sub_order_id, '子订单ID')"
              />
              <span class="truncate">{{ record.sub_order_id }}</span>
            </span>
            <span v-else>-</span>
          </template>
          <template v-else-if="column.key === 'platform_product_id'">
            <span class="inline-flex items-center gap-1">
              <CopyOutlined
                class="flex-shrink-0 cursor-pointer text-gray-400 hover:text-blue-500"
                @click.stop="handleCopy(record.platform_product_id, '平台商品ID')"
              />
              <span class="truncate">{{ record.platform_product_id }}</span>
            </span>
          </template>
          <template v-else-if="column.key === 'product_sku'">
            {{ record.product_sku || '-' }}
          </template>
          <template v-else-if="column.key === 'unit_price'">
            {{ formatAmount(record.unit_price) }}
          </template>
          <template v-else-if="column.key === 'discount'">
            {{ formatAmount(record.discount) }}
          </template>
          <template v-else-if="column.key === 'total'">
            {{ formatAmount(record.total) }}
          </template>
          <template v-else-if="column.key === 'created_date'">
            {{ formatTime(record.created_date) }}
          </template>
          <template v-else-if="column.key === 'action'">
            <a-button
              type="link"
              size="small"
              @click="handleViewDetail(record as OrderItemRecord)"
            >
              <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="订单项详情"
      :open="drawerVisible"
      :width="720"
      @close="drawerVisible = false"
    >
      <a-spin :spinning="drawerLoading">
        <template v-if="itemDetail">
          <!-- 订单项信息 -->
          <a-descriptions title="订单项信息" :column="2" bordered class="mb-4">
            <a-descriptions-item label="ID">{{ itemDetail.id }}</a-descriptions-item>
            <a-descriptions-item label="平台商品ID">
              {{ itemDetail.platform_product_id }}
            </a-descriptions-item>
            <a-descriptions-item label="SKU">
              {{ itemDetail.product_sku || '-' }}
            </a-descriptions-item>
            <a-descriptions-item label="条形码">
              {{ itemDetail.product_barcode || '-' }}
            </a-descriptions-item>
            <a-descriptions-item label="单价">
              {{ formatAmount(itemDetail.unit_price) }}
            </a-descriptions-item>
            <a-descriptions-item label="数量">
              {{ itemDetail.quantity }}
            </a-descriptions-item>
            <a-descriptions-item label="优惠">
              {{ formatAmount(itemDetail.discount) }}
            </a-descriptions-item>
            <a-descriptions-item label="小计">
              {{ formatAmount(itemDetail.total) }}
            </a-descriptions-item>
            <a-descriptions-item label="子订单ID">
              {{ itemDetail.sub_order_id || '-' }}
            </a-descriptions-item>
            <a-descriptions-item label="创建时间">
              {{ formatTime(itemDetail.created_date) }}
            </a-descriptions-item>
          </a-descriptions>

          <!-- 所属订单 -->
          <a-descriptions title="所属订单" :column="2" bordered class="mb-4">
            <template v-if="itemDetail.parent_order">
              <a-descriptions-item label="平台订单ID" :span="2">
                <a
                  class="text-blue-500 cursor-pointer"
                  @click="handleGoToOrder(itemDetail.parent_order.platform_order_id)"
                >
                  {{ itemDetail.parent_order.platform_order_id }}
                </a>
                <CopyOutlined
                  class="ml-2 cursor-pointer text-blue-500"
                  @click="handleCopy(itemDetail.parent_order.platform_order_id, '平台订单ID')"
                />
              </a-descriptions-item>
              <a-descriptions-item label="订单状态">
                <a-tag
                  :color="orderStatusMap[itemDetail.parent_order.order_status_id]?.color
                    || 'default'"
                >
                  {{
                    orderStatusMap[itemDetail.parent_order.order_status_id]?.text
                      || `状态 ${itemDetail.parent_order.order_status_id}`
                  }}
                </a-tag>
              </a-descriptions-item>
              <a-descriptions-item label="订单金额">
                {{ formatAmount(itemDetail.parent_order.total_amount) }}
              </a-descriptions-item>
              <a-descriptions-item label="已支付">
                {{ formatAmount(itemDetail.parent_order.total_paid) }}
              </a-descriptions-item>
              <a-descriptions-item label="创建时间">
                {{ formatTime(itemDetail.parent_order.created_date) }}
              </a-descriptions-item>
              <a-descriptions-item label="付款时间">
                {{ formatTime(itemDetail.parent_order.paid_date) }}
              </a-descriptions-item>
            </template>
            <template v-else>
              <a-descriptions-item :span="2">
                <span class="text-gray-400">无关联订单</span>
              </a-descriptions-item>
            </template>
          </a-descriptions>

          <!-- ext JSON -->
          <a-descriptions title="扩展数据 (ext)" :column="1" bordered>
            <a-descriptions-item>
              <pre v-if="itemDetail.ext" class="m-0 text-xs max-h-80 overflow-auto">{{
                JSON.stringify(itemDetail.ext, 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>
