import { SearchOutlined, ReloadOutlined } from '@ant-design/icons'
import { Button, Card, Form, Input, Select, Space, Table, Typography } from 'antd'
import type { TableColumnsType } from 'antd'
import { useQuery } from '@tanstack/react-query'
import { useMemo } from 'react'
import { useNavigate, useSearchParams } from 'react-router'

import PageHeader from '@/components/admin/PageHeader'
import StatusTag from '@/components/admin/StatusTag'
import { fetchAdminOrders } from '@/services/admin'
import type { AdminOrderListItem } from '@/types/admin'
import { adminPayStatusOptions } from '@/utils/admin-options'
import {
  ADMIN_DEFAULT_PAGE_SIZE,
  buildAdminTablePagination,
  resolveAdminPageSize,
} from '@/utils/admin-pagination'
import { formatAdminDateTime } from '@/utils/admin-time'

type OrderFilterForm = {
  platformOrderId?: string
  payStatus?: string
  skuCode?: string
}

export default function AdminOrdersPage() {
  const navigate = useNavigate()
  const [searchParams, setSearchParams] = useSearchParams()
  const page = Number(searchParams.get('page') || 1) || 1
  const pageSize = resolveAdminPageSize(searchParams.get('pageSize'), ADMIN_DEFAULT_PAGE_SIZE)
  const filters = {
    platformOrderId: searchParams.get('platformOrderId') || '',
    payStatus: searchParams.get('payStatus') || '',
    skuCode: searchParams.get('skuCode') || '',
  }

  const queryParams = useMemo(
    () => ({ page, pageSize, ...filters }),
    [filters.platformOrderId, filters.payStatus, filters.skuCode, page, pageSize],
  )
  const query = useQuery({
    queryKey: ['admin-orders', queryParams],
    queryFn: () => fetchAdminOrders(queryParams),
  })
  const data = query.data?.data

  const columns: TableColumnsType<AdminOrderListItem> = [
    {
      title: '订单信息',
      dataIndex: 'platformOrderId',
      minWidth: 220,
      render: (_, row) => (
        <div className="cell-stack">
          <Typography.Link onClick={() => navigate(`/admin/orders/${row.orderId}`)}>
            {row.platformOrderId}
          </Typography.Link>
          <span className="muted">{row.shopName || row.shopId || row.provider}</span>
        </div>
      ),
    },
    {
      title: '商品 / 任务',
      minWidth: 220,
      render: (_, row) => (
        <div className="cell-stack">
          <span>{row.itemSummary || '-'}</span>
          <span className="muted">
            商品 {row.itemCount} · 数量 {row.totalQuantity} · 任务 {row.taskCount}
          </span>
        </div>
      ),
    },
    {
      title: '状态',
      minWidth: 220,
      render: (_, row) => (
        <Space size={[0, 6]} wrap>
          <StatusTag value={row.payStatus} kind="pay" />
          <StatusTag value={row.resourceStatus} kind="resource" />
          <StatusTag value={row.customerStatus} kind="customer" />
        </Space>
      ),
    },
    {
      title: '金额 / 时间',
      minWidth: 180,
      render: (_, row) => (
        <div className="cell-stack">
          <strong>{row.totalAmount || '0.00'} {row.currency}</strong>
          <span className="muted">{formatAdminDateTime(row.createdAt)}</span>
        </div>
      ),
    },
  ]

  function applyFilters(values: OrderFilterForm) {
    setSearchParams(cleanParams({ ...values, page: 1, pageSize }))
  }

  function resetFilters() {
    setSearchParams(cleanParams({ page: 1, pageSize }))
  }

  return (
    <section className="page-stack">
      <PageHeader title="订单" description="查看订单入库、商品匹配和任务拆分情况。" />

      <Card>
        <Form<OrderFilterForm>
          layout="inline"
          initialValues={filters}
          onFinish={applyFilters}
          className="filter-form"
        >
          <Form.Item name="platformOrderId">
            <Input allowClear placeholder="平台订单号" />
          </Form.Item>
          <Form.Item name="payStatus">
            <Select
              allowClear
              placeholder="支付状态"
              options={adminPayStatusOptions}
              style={{ minWidth: 140 }}
            />
          </Form.Item>
          <Form.Item name="skuCode">
            <Input allowClear placeholder="SKU 标识" />
          </Form.Item>
          <Form.Item>
            <Space>
              <Button type="primary" icon={<SearchOutlined />} htmlType="submit">
                查询
              </Button>
              <Button icon={<ReloadOutlined />} onClick={resetFilters}>
                重置
              </Button>
            </Space>
          </Form.Item>
        </Form>
      </Card>

      <Card>
        <Table<AdminOrderListItem>
          rowKey="orderId"
          loading={query.isLoading || query.isFetching}
          columns={columns}
          dataSource={data?.items || []}
          scroll={{ x: 900 }}
          pagination={buildAdminTablePagination({
            current: data?.pagination.page || page,
            pageSize: data?.pagination.pageSize || pageSize,
            total: data?.pagination.total || 0,
            onChange: (nextPage, nextPageSize) => {
              setSearchParams(cleanParams({ ...filters, page: nextPage, pageSize: nextPageSize }))
            },
          })}
        />
      </Card>
    </section>
  )
}

function cleanParams(params: Record<string, unknown>) {
  const next = new URLSearchParams()
  Object.entries(params).forEach(([key, value]) => {
    const normalized = String(value ?? '').trim()
    if (normalized) {
      next.set(key, normalized)
    }
  })
  return next
}