Editing

import { createGrid, type ColumnDef, type Row } from '@freegridjs/core';
import { makeRows } from '../data';
import { button, separator, text, tr, type DemoContext } from '../ui';

const CITIES: Record<string, string[]> = {
  'South Korea': ['Seoul', 'Busan', 'Incheon'],
  Japan: ['Tokyo', 'Osaka', 'Kyoto'],
  Germany: ['Berlin', 'Munich', 'Hamburg'],
  France: ['Paris', 'Lyon', 'Marseille'],
  Spain: ['Madrid', 'Barcelona', 'Valencia'],
  China: ['Beijing', 'Shanghai', 'Shenzhen'],
  'United States': ['New York', 'Seattle', 'Austin'],
  'United Kingdom': ['London', 'Manchester', 'Leeds'],
};

export default function mount(ctx: DemoContext) {
  const { lang } = ctx;
  const h = (en: string, ko: string) => tr(lang, { en, ko });
  const data = makeRows(300).map(r => ({ ...r, city: CITIES[r.country][r.id % 3] }));
  const columns: ColumnDef[] = [
    { field: 'id', header: 'ID', type: 'number', format: '0', width: 70, pinned: 'left' },
    // text editor + required
    { field: 'name', header: h('Name', '이름'), width: 170, editable: true, required: true },
    // select editor
    { field: 'country', header: h('Country', '국가'), width: 150, editable: true,
      editor: { type: 'select', options: Object.keys(CITIES) } },
    // dependent select: options come from the row's country
    { field: 'city', header: h('City', '도시'), width: 130, editable: true,
      editor: { type: 'select', options: (row: Row) => CITIES[row.country] ?? [] } },
    // number editor + validation
    { field: 'q1', header: h('Q1 revenue', '1분기 매출'), type: 'number', format: '#,##0', width: 130, editable: true,
      validate: v => (v == null || (typeof v === 'number' && v >= 0) ? true : h('Must be 0 or more', '0 이상이어야 합니다')) },
    { field: 'joined', header: h('Joined', '가입일'), type: 'date', width: 130, editable: true },
    { field: 'active', header: h('Active', '활성'), type: 'boolean', width: 90, editable: true }, // Space or double-click toggles
    { field: 'email', header: h('Email (read-only)', '이메일 (읽기 전용)'), width: 260 },
  ];
  const grid = createGrid(ctx.host, {
    columns, data, rowSelection: 'multiple', locale: lang,
    summary: { rows: [{ label: h('Total', '합계'), columns: { q1: 'sum', id: 'count' } }] },
  });

  grid.on('cellValueChanged', e => ctx.log(`cellValueChanged → ${e.colId}: ${String(e.oldValue)} → ${String(e.newValue)}`));
  grid.on('validationFailed', e => ctx.log(`validationFailed → ${e.colId}: ${e.message}`));
  grid.on('rowsAdded', e => ctx.log(`rowsAdded → ${e.rows.length}`));
  grid.on('rowsRemoved', e => ctx.log(`rowsRemoved → ${e.rows.length}`));

  text(ctx, h('Double-click, press Enter or just type. Enter saves, Esc cancels, Tab moves on.',
    '더블클릭하거나 Enter를 누르거나 바로 입력하세요. Enter로 저장, Esc로 취소, Tab으로 다음 칸.'));
  separator(ctx);
  button(ctx, h('Add row', '행 추가'), () => {
    const [row] = grid.addRows([{ id: 1000 + grid.getData().length, name: '', country: 'South Korea', city: 'Seoul', q1: 0, active: true }], 0);
    grid.scrollToRow(0);
    grid.startEdit(0, 'name');
    return row;
  });
  button(ctx, h('Delete selected', '선택 행 삭제'), () => grid.removeSelectedRows());
  button(ctx, h('Undo', '실행 취소'), () => grid.undo());
  button(ctx, h('Redo', '다시 실행'), () => grid.redo());
  separator(ctx);
  button(ctx, h('Show changes', '변경 내역 보기'), () => {
    const m = grid.getModifiedRows();
    ctx.log(h(`created ${m.created.length}, updated ${m.updated.length}, deleted ${m.deleted.length}`,
      `추가 ${m.created.length}, 수정 ${m.updated.length}, 삭제 ${m.deleted.length}`));
    for (const c of grid.getChanges().slice(0, 10)) ctx.log(`  #${c.row.id} ${c.colId}: ${String(c.oldValue)} → ${String(c.newValue)}`);
  });
  button(ctx, h('Save (commit)', '저장 (commit)'), () => {
    grid.commitChanges();
    ctx.log(h('changes committed — this is where you would send them to your server', '변경 확정 — 실제로는 여기서 서버로 보냅니다'));
  });
  button(ctx, h('Revert all', '모두 되돌리기'), () => grid.revertChanges());
  return grid;
}