import {createExcelPreview} from './excel-preview';
import {quantityPlanSvg,planPng} from './plan-preview';
import {openProjectInputs,projectRecords,type QuantitySnapshot} from './project-inputs';
import {createInputPanel} from './input-panel';
import {createResultsPanel} from './results-panel';
import {createReviewPanel} from './review-panel';
import {node as e,icon,rawSelection,type DashboardState,type Selection} from './dashboard-types';
import type {QuantityInputs} from './model';
import {templateHash} from './template-data';
import {exportRecords,finishQuantityExport,type ExportScope} from './export-state';
import './workspace.css';
type Snapshot=QuantitySnapshot;
const blank=():QuantityInputs=>({values:{},reviewed:false});
export function createTakeoffWorkspace(host:HTMLElement,snapshot:()=>Snapshot,select:(name:string)=>void,save:(name:string,data:QuantityInputs)=>void){
 let mode='materials';const fullState={sheet:'__all__',zoom:1.1},miniState={sheet:'표지및목차',zoom:0};
 let exportBusy=false;
 const state:DashboardState={query:'',view:'member',selected:'W6',closed:new Set(),openInputs:new Set(['basic','ground','material','conditions']),inputScroll:0};
 const calculated=new Map<string,Map<string,number|null>>();let changed=new Set<string>(),changedUntil=0,lastPier='';
 const legacy=[...host.children] as HTMLElement[],nav=e('nav');nav.className='takeoff-menu';nav.setAttribute('aria-label','재료표 및 수량산출');
 const area=e('section');area.className='takeoff-workspace';area.hidden=true;
 for(const [id,label]of [['materials','철근재료표'],['takeoff','공종별 수량산출']]){const b=e('button',label);b.type='button';b.dataset.takeoffMode=id;b.onclick=()=>{mode=id;refresh();};nav.append(b);}host.prepend(nav);host.append(area);
 async function exportProject(scope:ExportScope='all'){
  if(exportBusy)throw new Error('Excel을 생성 중입니다. 완료 후 다시 출력하세요.');
  exportBusy=true;
  try{
  const snap=snapshot(),records=exportRecords(snap,scope),problems:string[]=[];
  for(const r of records){const reasons=r.pier.dirty?['형상 재생성 필요']:!r.result?['형상 없음']:[...r.result.missing,...r.result.issues,...(!r.stored.reviewed?['원본 기준 확인 필요']:[]),...(r.stored.lastSignature!==r.result.signature?['재계산 필요']:[])];if(reasons.length)problems.push(r.pier.input.name+': '+reasons.join(', '));}
  if(!records.length||problems.length)throw new Error(problems.length?problems.join('\n'):'출력할 교각이 없습니다.');
  const models=records.flatMap(r=>r.pier.model?[r.pier.model]:[]),image=await planPng(quantityPlanSvg(models[0],models));
  const piers=records.map((r,i)=>({project:snap.project,pier:r.pier.input.name,overrides:r.result!.overrides,specs:r.stored.values,reviewed:r.stored.reviewed,copingMode:r.result!.copingMode,solplateMode:r.result!.solplateMode,templateHash,...(i===0?{planPng:image}:{})}));
  const response=await fetch('/__pierzainer/quantity/export',{method:'POST',headers:{'Content-Type':'application/json','X-Pierzainer-Action':'quantity'},body:JSON.stringify({piers})});
  if(!response.ok){const error=await response.json();throw new Error(error.error??'전체 교각 Excel 출력 실패');}
  const blob=await response.blob();
  const changed=finishQuantityExport(snap,scope,snapshot(),save);
  const target=scope==='all'?'전체교각':records[0].pier.input.name;
  const url=URL.createObjectURL(blob),link=e('a');link.href=url;link.download=`${snap.project.bridge||'교량'}_${target}_수량산출서.xlsx`.replace(/[\\/:*?"<>|]/g,'_');link.click();setTimeout(()=>URL.revokeObjectURL(url),1000);
  if(changed.length)throw new Error(`Excel은 생성 시작 시점 기준으로 저장했습니다. 생성 중 변경된 ${changed.join(', ')} 입력은 보존했습니다. 재계산 후 다시 출력하세요.`);
  }finally{exportBusy=false;}
 }
 function refresh(){
  document.querySelectorAll<HTMLDialogElement>('[data-quantity-preview-dialog]').forEach(d=>{d.close();d.remove();});
  legacy.forEach(n=>n.hidden=mode!=='materials');area.hidden=mode==='materials';for(const b of nav.querySelectorAll('button'))b.setAttribute('aria-pressed',String(b.dataset.takeoffMode===mode));if(mode==='materials')return;
  const snap=snapshot(),pier=snap.piers.find(p=>p.input.name===snap.selected)??snap.piers[0];area.replaceChildren();area.classList.toggle('is-full-preview',mode==='preview');
  const toolbar=e('header',undefined,'takeoff-toolbar tq-toolbar'),selector=e('select');selector.setAttribute('aria-label','수량산출 대상 교각');for(const p of snap.piers){const opt=e('option',p.input.name+' · '+p.input.type);opt.value=p.input.name;opt.selected=p.input.name===pier?.input.name;selector.append(opt);}selector.onchange=()=>select(selector.value);toolbar.append(selector);area.append(toolbar);
  if(!pier?.model){area.append(e('p','형상 생성에서 교각을 먼저 생성하세요.'));return;}
  if(lastPier!==pier.input.name){lastPier=pier.input.name;miniState.sheet='표지및목차';state.selected='W6';state.inputScroll=0;changed=new Set();}
  const records=projectRecords(snap);
  const projectRows=records.flatMap(r=>r.result?[{name:r.pier.input.name,result:r.result}]:[]);
  const plan={selected:pier.model,models:snap.piers.flatMap(p=>p.model?[p.model]:[])};
  const record=records.find(r=>r.pier===pier)!;
  const stored=record.stored,result=record.result!,stale=stored.lastSignature!==result.signature||pier.dirty;
  const status=e('p',pier.dirty?'형상 재생성 필요':result.issues.length?'적용 범위 검토 필요':result.missing.length?`누락 ${result.missing.length}개`:stale?'재계산 필요':result.complete?'계산 완료':'원본 기준 확인 필요','takeoff-status');status.dataset.state=!stale&&result.complete?'done':'pending';status.setAttribute('role','status');toolbar.append(status);
  const persist=(next:QuantityInputs)=>{save(pier.input.name,next);refresh();};
  const actions=e('div',undefined,'takeoff-actions'),calc=e('button','↻ 재계산'),exporter=e('button','Excel 출력'),openPreview=e('button',mode==='preview'?'대시보드로 돌아가기':'미리보기 열기');calc.type=exporter.type=openPreview.type='button';calc.setAttribute('aria-label','수량산출 재계산');
  calc.onclick=()=>{const before=calculated.get(pier.input.name);changed=new Set(result.results.filter(r=>before?.has(r.cell)&&before.get(r.cell)!==r.value).map(r=>r.cell));changedUntil=Date.now()+2500;calculated.set(pier.input.name,new Map(result.results.map(r=>[r.cell,r.value])));persist({...stored,lastSignature:result.signature});};
  exporter.textContent='선택 교각 Excel';exporter.disabled=exportBusy;exporter.title='선택한 교각만 출력합니다.';exporter.dataset.takeoffExport='selected';
  const allExporter=e('button','전체 교각 Excel');allExporter.type='button';allExporter.disabled=exportBusy;allExporter.dataset.takeoffExport='all';
  const notice=(message:string)=>{const current=area.querySelector<HTMLElement>('[role="status"]')??status;current.textContent=message;current.title=message;};
  const runExport=async(scope:ExportScope)=>{exporter.disabled=allExporter.disabled=true;notice((scope==='all'?'전체 교각':'선택 교각')+' Excel 생성 중…');try{await exportProject(scope);notice('Excel 출력 완료');}catch(error){notice((error as Error).message);}finally{host.querySelectorAll<HTMLButtonElement>('[data-takeoff-export]').forEach(b=>{b.disabled=exportBusy;});}};
  exporter.onclick=()=>runExport('selected');allExporter.onclick=()=>runExport('all');
  openPreview.onclick=()=>{mode=mode==='preview'?'takeoff':'preview';refresh();};const allInputs=e('button','전체 교각 입력');allInputs.type='button';allInputs.onclick=()=>openProjectInputs(snapshot,save,refresh,()=>exportProject('all'));actions.append(allInputs,calc,exporter,allExporter,openPreview);toolbar.append(actions);
  if(mode==='preview'){
   const full=e('section',undefined,'tq-full-preview');const detail=e('section',undefined,'takeoff-trace tq-full-trace');
   const paper=createExcelPreview({result,stored,pier:pier.input.name,project:snap.project,plan,projectRows,state:fullState,onCell:cell=>{const row=result.results.find(r=>r.cell===cell);if(!row)return;detail.replaceChildren(e('h3',row.name),e('pre',String(row.formula)),e('pre',result.book.substitution('3.3 수량산출_P1',String(row.formula))),e('p',String(row.value??'미산정')+' '+row.unit));detail.scrollIntoView({block:'nearest'});}});full.append(paper,detail);area.append(full);return;
  }
  const inputs=createInputPanel({result,stored,pier,project:snap.project,state,onChange:persist});
  const review=createReviewPanel({result,stored,pier:pier.input.name,project:snap.project,plan,projectRows,stale,miniState,onCell:cell=>{const row=result.results.find(r=>r.cell===cell);if(row){state.selected=cell;results.paint();review.select(rawSelection(row,result.book));}}});
  const results=createResultsPanel({result,stale,reviewed:stored.reviewed,state,changed:Date.now()<changedUntil?changed:new Set(),onSelect:s=>review.select(s),onReview:()=>{}});
  const progress=e('span',`필수입력 ${inputs.done}/${inputs.total}`,'tq-header-progress');toolbar.insertBefore(progress,status);
  const flow=e('div',undefined,'tq-flow');flow.setAttribute('aria-label','수량산출 작업 단계');
  for(const [i,title,description,type]of [[1,'입력','교각 정보 및 계산 조건 입력','input'],[2,'검토','입력값 및 누락 항목 확인','review'],[3,'수량 결과','항목별 수량 산출 및 확인','result'],[4,'산출서 미리보기','최종 검토 및 출력','preview']] as [number,string,string,string][]){const b=e('button');b.type='button';b.dataset.workflowStep=String(i);b.append(icon(type));const text=e('span');text.append(e('b',title),e('small',description));if(i===2&&result.missing.length)text.append(e('em',`누락 ${result.missing.length}개`));b.append(text);b.onclick=()=>{if(i===1)inputs.focusMissing();else if(i===2)results.review();else if(i===3)results.focusTable();else review.focusPreview();};flow.append(b);}
  const grid=e('div',undefined,'tq-dashboard-grid');grid.append(inputs.panel,results.panel,review.panel);area.append(flow,grid);
  const footer=e('div',undefined,'tq-input-reset');const reset=e('button','직접 입력 초기화');reset.type='button';reset.onclick=()=>persist(blank());footer.append(reset);inputs.panel.append(footer);
  openPreview.onclick=()=>review.open();
  results.paint();
 }
 return {refresh};
}