Summary Row

import { t } from './i18n';
import { Radio } from 'antd';
import * as React from 'react';
import { BGrid, BGridColumn, BGridDataItem, BGridProps } from 'beautiful-grid';
import { useContainerSize } from '../hooks/useContainerSize';
import DataGridContainer from '../components/DataGridContainer';

interface SalesOrder {
  channel: string;
  orderNo: string;
  customer: string;
  quantity: number;
  supplyAmount: number;
  taxAmount: number;
  totalAmount: number;
}

const customers = [t('에이원 리테일', 'A1 Retail'), t('한빛상사', 'Hanbit Sangsa'), t('모노마켓', 'Mono Market'), t('오로라스토어', 'Aurora Store')];
const channels = [t('자사몰', 'Own Mall'), t('스마트스토어', 'Smart Store'), 'B2B'];
const data: BGridDataItem<SalesOrder>[] = Array.from({ length: 30 }, (_, index) => {
  const quantity = (index % 8) + 1;
  const supplyAmount = quantity * (48_000 + (index % 5) * 12_000);
  const taxAmount = Math.round(supplyAmount * 0.1);
  return {
    values: {
      channel: channels[index % channels.length],
      orderNo: `ORD-2026-${String(index + 1).padStart(5, '0')}`,
      customer: customers[index % customers.length],
      quantity,
      supplyAmount,
      taxAmount,
      totalAmount: supplyAmount + taxAmount,
    },
  };
});

const formatWon = (value: number) => `${value.toLocaleString()}${t('원', 'KRW')}`;
const sumBy = (rows: BGridDataItem<SalesOrder>[], key: 'quantity' | 'supplyAmount' | 'taxAmount' | 'totalAmount') =>
  rows.reduce((total, item) => total + item.values[key], 0);

const createSummary = (position: 'top' | 'bottom'): BGridProps<SalesOrder>['summary'] => ({
  position,
  rows: [
    {
      columns: [
        {
          columnIndex: 0,
          colSpan: 3,
          align: 'center',
          itemRender: ({ data }) => <strong>{position === 'top' ? t('상단', 'Top') : t('하단', 'Bottom')} {t('매출 합계 ·', 'Total Sales ·')} {data.length}{t('건', 'cases')}</strong>,
        },
        { columnIndex: 3, align: 'right', itemRender: ({ data }) => <strong>{sumBy(data, 'quantity')}{t('개', 'ea')}</strong> },
        { columnIndex: 4, align: 'right', itemRender: ({ data }) => <strong>{formatWon(sumBy(data, 'supplyAmount'))}</strong> },
        { columnIndex: 5, align: 'right', itemRender: ({ data }) => <strong>{formatWon(sumBy(data, 'taxAmount'))}</strong> },
        { columnIndex: 6, align: 'right', itemRender: ({ data }) => <strong>{formatWon(sumBy(data, 'totalAmount'))}</strong> },
      ],
    },
  ],
});

const createMultiSummary = (position: 'top' | 'bottom'): BGridProps<SalesOrder>['summary'] => ({
  position,
  rows: [
    {
      style: { backgroundColor: '#fffbeb', fontWeight: 600 },
      columns: [
        {
          columnIndex: 0,
          colSpan: 3,
          align: 'center',
          itemRender: ({ data }) => (
            <span>
              {position === 'top' ? t('상단', 'Top') : t('하단', 'Bottom')} {t('평균', 'Average')} ({data.length}{t('건', 'cases')})
            </span>
          ),
        },
        {
          columnIndex: 3,
          align: 'right',
          itemRender: ({ data }) => <span>{(sumBy(data, 'quantity') / data.length).toFixed(1)}{t('개', 'ea')}</span>,
        },
        {
          columnIndex: 4,
          align: 'right',
          itemRender: ({ data }) => <span>{formatWon(Math.round(sumBy(data, 'supplyAmount') / data.length))}</span>,
        },
        {
          columnIndex: 5,
          align: 'right',
          itemRender: ({ data }) => <span>{formatWon(Math.round(sumBy(data, 'taxAmount') / data.length))}</span>,
        },
        {
          columnIndex: 6,
          align: 'right',
          itemRender: ({ data }) => <span>{formatWon(Math.round(sumBy(data, 'totalAmount') / data.length))}</span>,
        },
      ],
    },
    {
      style: { backgroundColor: '#f1f5f9', fontWeight: 700 },
      columns: [
        {
          columnIndex: 0,
          colSpan: 3,
          align: 'center',
          itemRender: ({ data }) => (
            <strong>
              {position === 'top' ? t('상단', 'Top') : t('하단', 'Bottom')} {t('합계', 'Total')} ({data.length}{t('건', 'cases')})
            </strong>
          ),
        },
        { columnIndex: 3, align: 'right', itemRender: ({ data }) => <strong>{sumBy(data, 'quantity')}{t('개', 'ea')}</strong> },
        { columnIndex: 4, align: 'right', itemRender: ({ data }) => <strong>{formatWon(sumBy(data, 'supplyAmount'))}</strong> },
        { columnIndex: 5, align: 'right', itemRender: ({ data }) => <strong>{formatWon(sumBy(data, 'taxAmount'))}</strong> },
        { columnIndex: 6, align: 'right', itemRender: ({ data }) => <strong>{formatWon(sumBy(data, 'totalAmount'))}</strong> },
      ],
    },
  ],
});

function SummaryExample() {
  const [position, setPosition] = React.useState<'top' | 'bottom'>('top');
  const [summaryMode, setSummaryMode] = React.useState<'single' | 'multi'>('single');
  const [columns, setColumns] = React.useState<BGridColumn<SalesOrder>[]>([
    { key: 'channel', label: t('주문채널', 'Order Channel'), width: 100, align: 'center' },
    { key: 'orderNo', label: t('주문번호', 'Order Number'), width: 140 },
    { key: 'customer', label: t('고객사', 'Client'), width: 150 },
    { key: 'quantity', label: t('수량', 'Quantity'), width: 80, align: 'right' },
    { key: 'supplyAmount', label: t('공급가액', 'Supply Amount'), width: 130, align: 'right', itemRender: ({ values }) => <>{formatWon(values.supplyAmount)}</> },
    { key: 'taxAmount', label: t('부가세', 'VAT'), width: 110, align: 'right', itemRender: ({ values }) => <>{formatWon(values.taxAmount)}</> },
    { key: 'totalAmount', label: t('결제금액', 'Payment Amount'), width: 140, align: 'right', itemRender: ({ values }) => <strong>{formatWon(values.totalAmount)}</strong> },
  ]);
  const containerRef = React.useRef<HTMLDivElement>(null);
  const { width, height } = useContainerSize(containerRef);

  return (
    <>
      <div style={{ display: 'flex', gap: 16, marginBottom: 10, flexWrap: 'wrap' }}>
        <Radio.Group
          options={[{ label: t('다중 행 요약 (평균+합계)', 'Multi-row (Avg+Sum)'), value: 'multi' }, { label: t('단일 행 요약', 'Single Row'), value: 'single' }]}
          value={summaryMode}
          onChange={event => setSummaryMode(event.target.value)}
        />
        <Radio.Group
          options={[{ label: t('상단 요약', 'Top Summary'), value: 'top' }, { label: t('하단 요약', 'Bottom Summary'), value: 'bottom' }]}
          value={position}
          onChange={event => setPosition(event.target.value)}
        />
      </div>
      <DataGridContainer ref={containerRef}>
        <BGrid<SalesOrder>
          showLineNumber
          frozenColumnIndex={1}
          width={width}
          height={height}
          data={data}
          columns={columns}
          rowKey='orderNo'
          onChangeColumns={(_columnIndex, { columns }) => setColumns(columns)}
          variant='vertical-bordered'
          summary={summaryMode === 'multi' ? createMultiSummary(position) : createSummary(position)}
        />
      </DataGridContainer>
    </>
  );
}

export default SummaryExample;

import * as React from 'react';
import './DataGridContainer.css';

interface DataGridContainerProps extends React.HTMLAttributes<HTMLDivElement> {
  children?: React.ReactNode;
}

/**
 * Keeps a DataGrid in a measured, fixed layout box.
 *
 * BGrid's rendered root is absolutely positioned within this relative
 * container. This makes a ResizeObserver measurement authoritative when a
 * surrounding flex or grid layout shrinks as well as when it expands.
 */
const DataGridContainer = React.forwardRef<HTMLDivElement, DataGridContainerProps>(
  ({ className, ...rest }, ref) => (
    <div ref={ref} className={`data-grid-container ${className ?? ''}`.trim()} {...rest} />
  ),
);

DataGridContainer.displayName = 'DataGridContainer';

export default DataGridContainer;

.data-grid-container {
  position: relative;
  width: 100%;
  height: 400px;
  overflow: hidden;
  font-size: 13px;
}

.data-grid-container > .bgrid-root {
  position: absolute;
  inset: 0;
}

import * as React from 'react';

export function useContainerSize(ref: React.MutableRefObject<HTMLElement | null>, additionalDeps: unknown[] = []) {
  const [width, setWidth] = React.useState(0);
  const [height, setHeight] = React.useState(0);

  const resizeObserver = React.useRef(
    new ResizeObserver(entries => {
      if (entries.length !== 1) {
        throw new Error('Invalid Container length');
      }

      const [entry] = entries;

      const { width, height } = entry.contentRect;

      setWidth(width);
      setHeight(height);
    }),
  );

  React.useEffect(() => {
    if (!ref.current) return;

    const observer = resizeObserver.current;
    const element = ref.current;

    setWidth(element.clientWidth);
    setHeight(element.clientHeight);
    observer.observe(element);

    return () => {
      observer.unobserve(element);
    };
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [...additionalDeps, ref]);

  return {
    width,
    height,
  };
}