import { useState } from 'react';
import { Button, Drawer, Form, Input, Select, Table, Tag, Typography } from 'antd';
import type { ColumnsType } from 'antd/es/table';
import { REDEEM_CHANNEL_LABELS, type RedeemChannel } from '@dukang/shared-types';
import RedeemRecordDetailDescriptions from '../components/RedeemRecordDetailDescriptions';
import { request } from '../lib/api';
import { fmtTime } from '../lib/constants';
import { useAdminList } from '../lib/useAdminList';

type Row = {
  id: string;
  redeemNo: string;
  amount: number;
  settleAmount: number;
  channel?: RedeemChannel;
  createdAt: string;
  user?: { userNo: string; phone: string | null; nickname?: string | null };
  store?: { name: string; cityName: string };
  coupon?: { couponNo: string };
};

function maskPhone(phone: string | null | undefined) {
  if (!phone || phone.length < 7) return phone ?? '—';
  return `${phone.slice(0, 3)}****${phone.slice(-4)}`;
}

export default function RedeemRecordsPage() {
  const [form] = Form.useForm();
  const [filters, setFilters] = useState<Record<string, string>>({});
  const { data, loading, page, pageSize, setPage, setPageSize } = useAdminList<Row>(
    '/admin/redeem-records',
    () => {
      const qs = new URLSearchParams();
      if (filters.redeemNo) qs.set('redeemNo', filters.redeemNo);
      if (filters.storeId) qs.set('storeId', filters.storeId);
      if (filters.channel) qs.set('channel', filters.channel);
      return qs;
    },
    [filters],
  );
  const [detail, setDetail] = useState<Record<string, unknown> | null>(null);
  const [drawerOpen, setDrawerOpen] = useState(false);
  const [detailLoading, setDetailLoading] = useState(false);

  async function openDetail(id: string) {
    setDetailLoading(true);
    setDrawerOpen(true);
    try {
      setDetail(await request(`/admin/redeem-records/${id}`));
    } finally {
      setDetailLoading(false);
    }
  }

  const columns: ColumnsType<Row> = [
    { title: '核销号', dataIndex: 'redeemNo', width: 180 },
    {
      title: '方式',
      dataIndex: 'channel',
      width: 110,
      render: (v: RedeemChannel | undefined) => {
        const channel = v === 'PHONE' ? 'PHONE' : 'SCAN';
        return (
          <Tag color={channel === 'PHONE' ? 'purple' : 'blue'}>
            {REDEEM_CHANNEL_LABELS[channel]}
          </Tag>
        );
      },
    },
    { title: '用户编号', dataIndex: ['user', 'userNo'], width: 110 },
    {
      title: '用户昵称',
      dataIndex: ['user', 'nickname'],
      width: 100,
      render: (v: string | null | undefined) => v || '—',
    },
    {
      title: '用户手机',
      dataIndex: ['user', 'phone'],
      width: 120,
      render: (v: string | null | undefined) => maskPhone(v),
    },
    { title: '门店', dataIndex: ['store', 'name'] },
    { title: '核销额', dataIndex: 'amount', width: 90, render: (v) => `¥${v}` },
    { title: '结算额', dataIndex: 'settleAmount', width: 90, render: (v) => `¥${v}` },
    { title: '券号', dataIndex: ['coupon', 'couponNo'], width: 160 },
    { title: '时间', dataIndex: 'createdAt', width: 160, render: fmtTime },
    {
      title: '操作',
      width: 80,
      render: (_, row) => (
        <Button type="link" size="small" onClick={() => void openDetail(row.id)}>
          详情
        </Button>
      ),
    },
  ];

  return (
    <div>
      <Typography.Title level={4}>核销记录</Typography.Title>
      <Form
        form={form}
        layout="inline"
        style={{ marginBottom: 16 }}
        onFinish={(v) => {
          setFilters(v);
          setPage(1);
        }}
      >
        <Form.Item name="redeemNo" label="核销号">
          <Input allowClear />
        </Form.Item>
        <Form.Item name="storeId" label="门店ID">
          <Input allowClear />
        </Form.Item>
        <Form.Item name="channel" label="方式">
          <Select
            allowClear
            style={{ width: 140 }}
            options={[
              { value: 'SCAN', label: '扫码核销' },
              { value: 'PHONE', label: '手机号核销' },
            ]}
          />
        </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: 1300 }}
        pagination={{
          current: page,
          pageSize,
          total: data?.total ?? 0,
          showSizeChanger: true,
          onChange: (p, ps) => {
            setPage(p);
            setPageSize(ps);
          },
        }}
      />
      <Drawer
        title="核销详情"
        width={640}
        open={drawerOpen}
        onClose={() => {
          setDrawerOpen(false);
          setDetail(null);
        }}
        destroyOnClose
      >
        {detailLoading ? (
          <Typography.Text type="secondary">加载中…</Typography.Text>
        ) : detail ? (
          <RedeemRecordDetailDescriptions detail={detail} />
        ) : null}
      </Drawer>
    </div>
  );
}