import { useState } from 'react';
import {
  Button, Descriptions, Drawer, Form, Input, Space, Table, Typography, message,
} from 'antd';
import type { ColumnsType } from 'antd/es/table';
import OrderTrackDrawer from '../components/OrderTrackDrawer';
import { request } from '../lib/api';
import { ORDER_STATUS_LABELS, fmtTime } from '../lib/constants';
import { useAdminList } from '../lib/useAdminList';

type Row = {
  id: string;
  orderId: string;
  provider: string;
  trackingNo: string | null;
  providerOrderNo: string | null;
  updatedAt: string;
  order?: {
    id: string;
    orderNo: string;
    status: string;
    receiverName: string;
    receiverPhone: string;
    deliveryType: string;
  };
};

export default function DeliveriesPage() {
  const [form] = Form.useForm();
  const [editForm] = Form.useForm();
  const [filters, setFilters] = useState<Record<string, string>>({});
  const { data, loading, page, pageSize, setPage, setPageSize, reload } = useAdminList<Row>(
    '/admin/deliveries',
    () => {
      const qs = new URLSearchParams();
      if (filters.provider) qs.set('provider', filters.provider);
      if (filters.trackingNo) qs.set('trackingNo', filters.trackingNo);
      if (filters.orderNo) qs.set('orderNo', filters.orderNo);
      return qs;
    },
    [filters],
  );
  const [detail, setDetail] = useState<Row | null>(null);
  const [drawerOpen, setDrawerOpen] = useState(false);
  const [trackOpen, setTrackOpen] = useState(false);
  const [trackOrderId, setTrackOrderId] = useState<string | null>(null);
  const [trackOrderNo, setTrackOrderNo] = useState<string | null>(null);
  const [trackOrderStatus, setTrackOrderStatus] = useState<string | null>(null);

  function openTrack(row: Row) {
    const orderId = row.orderId || row.order?.id;
    if (!orderId) {
      message.warning('缺少关联订单，无法查询路由');
      return;
    }
    setTrackOrderId(orderId);
    setTrackOrderNo(row.order?.orderNo ?? null);
    setTrackOrderStatus(row.order?.status ?? null);
    setTrackOpen(true);
  }

  const columns: ColumnsType<Row> = [
    { title: '订单号', dataIndex: ['order', 'orderNo'], width: 170 },
    { title: 'provider', dataIndex: 'provider', width: 90 },
    { title: '运单号', dataIndex: 'trackingNo', width: 140, render: (v) => v || '—' },
    { title: '第三方单号', dataIndex: 'providerOrderNo', width: 140, render: (v) => v || '—' },
    { title: '订单状态', dataIndex: ['order', 'status'], width: 100, render: (s) => ORDER_STATUS_LABELS[s] || s },
    { title: '收货人', dataIndex: ['order', 'receiverName'], width: 90 },
    { title: '更新', dataIndex: 'updatedAt', width: 160, render: fmtTime },
    {
      title: '操作', width: 140,
      render: (_, row) => (
        <Space size={0}>
          <Button type="link" size="small" onClick={() => openTrack(row)}>路由</Button>
          <Button type="link" size="small" onClick={async () => {
            const d = await request<Row>(`/admin/deliveries/${row.id}`);
            setDetail(d);
            editForm.setFieldsValue({ provider: d.provider, trackingNo: d.trackingNo, providerOrderNo: d.providerOrderNo });
            setDrawerOpen(true);
          }}>编辑</Button>
        </Space>
      ),
    },
  ];

  return (
    <div>
      <Typography.Title level={4}>快递/配送单</Typography.Title>
      <Form form={form} layout="inline" style={{ marginBottom: 16 }} onFinish={(v) => { setFilters(v); setPage(1); }}>
        <Form.Item name="orderNo" label="订单号"><Input allowClear /></Form.Item>
        <Form.Item name="provider" label="provider"><Input allowClear placeholder="MOCK" /></Form.Item>
        <Form.Item name="trackingNo" label="运单号"><Input allowClear /></Form.Item>
        <Form.Item><Button type="primary" htmlType="submit">查询</Button></Form.Item>
      </Form>
      <Table rowKey="id" loading={loading} columns={columns} dataSource={data?.items ?? []} scroll={{ x: 1100 }}
        pagination={{ current: page, pageSize, total: data?.total ?? 0, showSizeChanger: true, onChange: (p, ps) => { setPage(p); setPageSize(ps); } }} />
      <Drawer title="配送单编辑" width={480} open={drawerOpen} onClose={() => setDrawerOpen(false)}
        extra={
          <Space>
            <Button onClick={() => setDrawerOpen(false)}>取消</Button>
            <Button type="primary" onClick={async () => {
              if (!detail) return;
              const v = await editForm.validateFields();
              await request(`/admin/deliveries/${detail.id}`, { method: 'PUT', body: JSON.stringify(v) });
              message.success('已保存');
              setDrawerOpen(false);
              void reload();
            }}>保存</Button>
          </Space>
        }>
        {detail && (
          <>
            <Descriptions column={1} bordered size="small" style={{ marginBottom: 16 }}>
              <Descriptions.Item label="订单">{detail.order?.orderNo}</Descriptions.Item>
              <Descriptions.Item label="收货">{detail.order?.receiverName} {detail.order?.receiverPhone}</Descriptions.Item>
            </Descriptions>
            <Form form={editForm} layout="vertical">
              <Form.Item name="provider" label="provider" rules={[{ required: true }]}><Input /></Form.Item>
              <Form.Item name="providerOrderNo" label="第三方单号"><Input /></Form.Item>
              <Form.Item name="trackingNo" label="运单号"><Input /></Form.Item>
            </Form>
            <Button
              style={{ marginTop: 8 }}
              onClick={() => openTrack(detail)}
            >
              查看路由
            </Button>
          </>
        )}
      </Drawer>
      <OrderTrackDrawer
        open={trackOpen}
        orderId={trackOrderId}
        orderNo={trackOrderNo}
        orderStatus={trackOrderStatus}
        onClose={() => setTrackOpen(false)}
      />
    </div>
  );
}