"""Apply the project ground manager integration to the existing application."""
from pathlib import Path

root = Path(__file__).resolve().parents[1]
p = root / 'src/main.ts'
s = p.read_text()
s = "import { createProjectGroundManager } from './view/project-ground';\nimport { applyProjectGround, groundInputChanged } from './core/project-ground';\nimport { registerGroundImporter } from '../pierzainer_ground/ground-link';\n" + s
s = s.replace('let groundModel: GroundModelFile | null = null;', 'let groundModel: GroundModelFile | null = null;\nlet groundProjectVersion = 0;\nlet groundImportSerial = 0;')
marker = 'function el<K extends keyof HTMLElementTagNameMap>'
insert = '''async function importProjectGround(text: string, name: string): Promise<void> {
  const version = groundProjectVersion, serial = ++groundImportSerial;
  const imported = parseGroundModel(text);
  await Promise.all((imported.mapLayers ?? []).map(decodeGroundMapImage));
  if (version !== groundProjectVersion || serial !== groundImportSerial) throw new Error('프로젝트 또는 불러올 모델이 변경되어 이전 결과를 적용하지 않았습니다.');
  groundModel = imported;
  groundMapMode = imported.mapLayers?.length ? 'satellite' : 'none';
  setGroundMapMode(groundMapMode);
  state.visible.ground = true;
  setupScene(); renderAll();
  setStatus(`${name} 지반모델을 프로젝트 공통으로 불러왔습니다. 설계 입력은 비교 후 적용하세요.`);
}
registerGroundImporter(importProjectGround);
const projectGround = createProjectGroundManager({
  snapshot: () => ({ model: groundModel, piers: state.piers }),
  importModel: importProjectGround,
  apply: (names, fields) => {
    if (!groundModel) return;
    for (const p of state.piers) if (names.has(p.input.name)) p.draft = applyProjectGround(p.draft, groundModel, fields);
    renderAll();
  },
  regenerate: () => {
    state.piers = state.piers.map(p => groundInputChanged(p.input, p.draft) ? regenerateEntry(p) : p);
    setupScene(); renderAll();
    setStatus('지반 입력이 변경된 교각을 다시 생성했습니다. 생성 상태와 알림을 확인하세요.');
  },
});
function resetProjectGround(): void {
  groundProjectVersion++; groundImportSerial++;
  projectGround.reset();
  window.dispatchEvent(new Event('pierzainer:project-changed'));
}

'''
assert marker in s
s = s.replace(marker, insert + marker, 1)
s = s.replace('  updatePartToggles();\n  $<HTMLButtonElement>', '  updatePartToggles();\n  projectGround.refresh();\n  $<HTMLButtonElement>', 1)
start = s.index('  // ② 지반 모델 (승인 2026-10-23):')
end = s.index('  if (!groundModel) {', start)
s = s[:start] + "  wrap.appendChild(el('p', '프로젝트 공통 지반모델은 ① 형상의 [프로젝트 지반모델]에서 생성·불러오기·선택 적용합니다.', 'muted small'));\n\n" + s[end:]
s = s.replace(' * The ground model import and the 지반고 apply stay at the bottom, as before.', ' * Project model generation/import is managed from ①; this card retains local inputs.')
s = s.replace('  state.project = { ...parsed.project };', '  resetProjectGround();\n  state.project = { ...parsed.project };', 1)
marker = "  state.project = { ...state.project, name, bridge: $<HTMLInputElement>('bridge-name').value.trim() };"
assert marker in s
s = s.replace(marker, "  resetProjectGround();\n  groundModel = null;\n  groundMapMode = 'none';\n  setGroundMapMode(groundMapMode);\n" + marker, 1)
p.write_text(s)