import React, { useEffect, useRef, useState } from 'react';
import {
  Button,
  Descriptions,
  Drawer,
  Table,
  Tag,
  Typography,
} from 'antd';
import type { TableProps } from 'antd';
import XinTable from '@/components/XinTable';
import type {
  XinTableColumn,
  XinTableInstance,
  XinTableProps,
} from '@/components/XinTable/typings.ts';
import type IStatement from '@/domain/iStatement.ts';
import type { IStatementItem } from '@/domain/iStatement.ts';
import { STATEMENT_STATUS_MAP } from '@/domain/iStatement.ts';
import { RECONCILED_MAP } from '@/domain/iReconciliation.ts';
import { getStoreOptions } from '@/api/customer/store.ts';
import type IStore from '@/domain/iStore.ts';
import { Get } from '@/api/common/table.ts';

const { Title, Text } = Typography;

/**
 * 门店对账单（后台只读视角；生成/导出在小程序端）
 */
const StatementPage: React.FC = () => {
  const tableRef = useRef<XinTableInstance<IStatement>>(null);
  const [stores, setStores] = useState<IStore[]>([]);

  const [detailOpen, setDetailOpen] = useState(false);
  const [detail, setDetail] = useState<IStatement | null>(null);
  const [detailLoading, setDetailLoading] = useState(false);

  useEffect(() => {
    getStoreOptions().then((res) => setStores(res.data.data ?? []));
  }, []);

  const openDetail = async (id: number) => {
    setDetailOpen(true);
    setDetailLoading(true);
    try {
      const res = await Get<IStatement>('/recon/statement', id);
      setDetail(res.data.data ?? null);
    } finally {
      setDetailLoading(false);
    }
  };

  const itemColumns: TableProps<IStatementItem>['columns'] = [
    { title: '品名', dataIndex: 'product_name' },
    { title: '单价', dataIndex: 'price', align: 'right', render: (v) => `¥${v}` },
    { title: '数量', dataIndex: 'quantity', align: 'right' },
    { title: '重量', dataIndex: 'weight', align: 'right' },
    { title: '金额', dataIndex: 'amount', align: 'right', render: (v) => `¥${v}` },
    {
      title: '对账状态',
      dataIndex: 'is_reconciled',
      align: 'center',
      render: (v) => {
        const item = RECONCILED_MAP[Number(v ?? 0)];
        return <Tag color={item?.color}>{item?.text}</Tag>;
      },
    },
    { title: '备注', dataIndex: 'store_remark', render: (v) => v || '-' },
  ];

  const columns: XinTableColumn<IStatement>[] = [
    {
      title: '对账单号',
      dataIndex: 'statement_no',
      valueType: 'text',
      hideInForm: true,
      render: (_, record) => <Text copyable={{ text: record.statement_no }}>{record.statement_no}</Text>,
    },
    {
      title: '门店',
      dataIndex: 'store_id',
      valueType: 'select',
      hideInForm: true,
      fieldProps: {
        options: stores.map((s) => ({ label: s.name, value: s.id })),
        showSearch: true,
        optionFilterProp: 'label',
      },
      render: (_, record) => record.store?.name ?? '-',
    },
    {
      title: '对账周期',
      dataIndex: 'period_start',
      valueType: 'dateRange',
      hideInForm: true,
      render: (_, record) => `${record.period_start} ~ ${record.period_end}`,
    },
    {
      title: '总金额',
      dataIndex: 'total_amount',
      hideInForm: true,
      hideInSearch: true,
      align: 'right',
      render: (_, record) => <Text strong>¥{record.total_amount}</Text>,
    },
    {
      title: '回款周期',
      dataIndex: 'payment_cycle_days',
      hideInForm: true,
      hideInSearch: true,
      align: 'center',
      render: (_, record) => `${record.payment_cycle_days} 天`,
    },
    {
      title: '应结算日期',
      dataIndex: 'settlement_date',
      hideInForm: true,
      hideInSearch: true,
      align: 'center',
      render: (_, record) => {
        const overdue =
          record.status !== 2 && record.settlement_date
            ? new Date(record.settlement_date).getTime() < Date.now()
            : false;
        return (
          <Text type={overdue ? 'danger' : undefined} strong={overdue}>
            {record.settlement_date}
            {overdue ? '（逾期）' : ''}
          </Text>
        );
      },
    },
    {
      title: '状态',
      dataIndex: 'status',
      valueType: 'select',
      hideInForm: true,
      fieldProps: {
        options: Object.entries(STATEMENT_STATUS_MAP).map(([value, item]) => ({
          value: Number(value),
          label: item.text,
        })),
      },
      render: (_, record) => {
        const item = STATEMENT_STATUS_MAP[record.status ?? 0];
        return <Tag color={item?.color}>{item?.text}</Tag>;
      },
      align: 'center',
    },
  ];

  const operateRender: XinTableProps<IStatement>['operateRender'] = (record) => [
    <Button key="detail" size="small" onClick={() => openDetail(record.id!)}>
      详情
    </Button>,
  ];

  const tableProps: XinTableProps<IStatement> = {
    api: '/recon/statement',
    columns,
    rowKey: 'id',
    accessName: 'recon.statement',
    tableRef,
    operateRender,
    formProps: false,
    actionBarRender: (dom) => [dom.search, dom.keywordSearch],
  };

  return (
    <>
      <div className="mb-5">
        <Title level={3}>门店对账单</Title>
        <Text type="secondary">
          门店在小程序端自助生成；应结算日期 = 对账周期结束日 + 门店回款周期（生成时快照），逾期高亮提示。
        </Text>
      </div>
      <XinTable<IStatement> {...tableProps} />

      <Drawer
        title={detail ? `对账单 ${detail.statement_no}` : '对账单详情'}
        open={detailOpen}
        onClose={() => setDetailOpen(false)}
        width={860}
        loading={detailLoading}
      >
        {detail ? (
          <>
            <Descriptions column={2} size="small" bordered>
              <Descriptions.Item label="门店">{detail.store?.name}</Descriptions.Item>
              <Descriptions.Item label="状态">
                <Tag color={STATEMENT_STATUS_MAP[detail.status ?? 0]?.color}>
                  {STATEMENT_STATUS_MAP[detail.status ?? 0]?.text}
                </Tag>
              </Descriptions.Item>
              <Descriptions.Item label="对账周期">
                {detail.period_start} ~ {detail.period_end}
              </Descriptions.Item>
              <Descriptions.Item label="回款周期（快照）">
                {detail.payment_cycle_days} 天
              </Descriptions.Item>
              <Descriptions.Item label="应结算日期">
                {detail.settlement_date}
              </Descriptions.Item>
              <Descriptions.Item label="总金额">¥{detail.total_amount}</Descriptions.Item>
              {detail.remark ? (
                <Descriptions.Item label="备注" span={2}>
                  {detail.remark}
                </Descriptions.Item>
              ) : null}
            </Descriptions>
            <Title level={5} className="!mt-6 !mb-3">
              对账明细（{detail.items?.length ?? 0}）
            </Title>
            <Table<IStatementItem>
              rowKey="id"
              size="small"
              columns={itemColumns}
              dataSource={detail.items ?? []}
              pagination={false}
              summary={() => (
                <Table.Summary.Row>
                  <Table.Summary.Cell index={0} colSpan={4} align="right">
                    合计
                  </Table.Summary.Cell>
                  <Table.Summary.Cell index={1} align="right">
                    <Text strong>¥{detail.total_amount}</Text>
                  </Table.Summary.Cell>
                  <Table.Summary.Cell index={2} colSpan={2} />
                </Table.Summary.Row>
              )}
            />
          </>
        ) : null}
      </Drawer>
    </>
  );
};

export default StatementPage;