/* Viewer voor een woningontwerp (house-design-JSON uit de configurator), alleen bekijken.
 *
 * Draait op de engine van de configurator (static/configurator/, bijwerken met tools/configurator-sync.sh):
 * dezelfde HouseModel.computeParts als de configurator en de light-versie, afgewerkte woning in een
 * dag-omgeving. Weergaven 3D, Doorsnede en Plattegrond zoals de light-versie (js/light/light.js); de
 * plattegrond is daaruit overgenomen, dus wijzigingen daar hier meenemen.
 * Kerncijfers (maten, m², inhoud, gewicht, indicatieve prijs) rekent de engine; de prijs komt uit kosten/*.csv.
 * Lagen: afgewerkt (zoals de light-versie) of per bouwfase / laag (ViewLayers, zoals Lagen in de configurator),
 * zodat de ploeg bijv. regelwerk of elektra kan bekijken. PDF: werktekening = HousePdf.generate (alle tekenbladen),
 * klant = LightPdf.generate zoals de light-configurator (voorblad met beeld, kerncijfers, keuzes, prijs en QR-code,
 * aanzichten en plattegrond, werkwijze); bewaard bij het contact (POST naar de CRM); ontbreekt er een, dan maakt de
 * viewer hem vanzelf aan.
 */
(() => {
  const root = document.getElementById('viewer');
  const $ = (sel) => root.querySelector(sel);
  const nl = (n, d = 0) => n.toLocaleString('nl-NL', { minimumFractionDigits: d, maximumFractionDigits: d });
  const meters = (mm) => `${nl(mm / 1000, 2)} m`;
  const SECTION = { start: 1500, min: 300, max: 3000 };
  const HINTS = {
    '3d': 'Slepen = draaien · rechts of Shift+slepen = schuiven · klik en scroll = zoomen',
    cut: 'Slepen = draaien · rechts of Shift+slepen = schuiven · klik en scroll = zoomen',
    plan: 'Noord boven · maten in mm'
  };

  let st;
  try {
    st = HouseModel.normalize(HouseModel.clone(JSON.parse(document.getElementById('design').textContent)));
  } catch (err) {
    console.error(err);
    root.classList.add('is-error');
    $('.vw-msg').textContent = `Dit ontwerp kan niet worden getoond: ${err.message}`;
    return;
  }

  // 3D: afgewerkte woning, dag-omgeving (zoals de light-versie).
  const stage = $('.vw-3d');
  const scene = new THREE.Scene();
  scene.background = new THREE.Color(0xdfe6ec);
  const camera = new THREE.PerspectiveCamera(40, 1, 0.1, 400);
  const renderer = new THREE.WebGLRenderer({ antialias: true, preserveDrawingBuffer: true });
  renderer.setPixelRatio(Math.min(2, window.devicePixelRatio || 1));
  renderer.shadowMap.enabled = true;
  renderer.localClippingEnabled = true;
  stage.appendChild(renderer.domElement);
  const controls = new THREE.OrbitControls(camera, renderer.domElement);
  const ambient = new THREE.AmbientLight(0xffffff, 0.6);
  const sun = new THREE.DirectionalLight(0xffffff, 0.8);
  sun.position.set(5, 8, 5);
  scene.add(ambient, sun);
  const sky = Skybox.createEnvironment(scene);
  const mats = {
    wallMaterials: WallModel.createMaterials(), floorMaterials: FloorModel.createMaterials(), roofMaterials: RoofModel.createMaterials(),
    lightingMaterials: LightingModel.createMaterials(), sandwichMaterials: SandwichModel.createMaterials(), postMaterials: PostModel.createMaterials(),
    chimneyMaterials: ChimneyModel.createMaterials(), elektraMaterials: ElektraModel.createMaterials()
  };
  const S = st.settings;
  if (S.interiorPaint) mats.wallMaterials.spaanplaatMaterial.color.set(S.interiorColor);
  mats.roofMaterials.ceilingMaterial.color.set(S.ceilingColor || '#f4f3ef');

  const cfg = JSON.parse((document.getElementById('viewer-cfg') || {}).textContent || '{}');
  const disposeGeo = (g) => g && g.traverse(x => { if (x.geometry) x.geometry.dispose(); });

  // Lagen: 'af' = afgewerkte woning (finishedOnly, zoals de light-versie); anders de gekozen lagen (bouwfase of los).
  let layers = ViewLayers.all(), finished = true, parts = null, group = null;
  function build() {
    const next = HouseModel.computeParts(st, Object.assign({ layers, finishedOnly: finished }, mats));
    HouseModel.placeGroups(next);
    if (group) { scene.remove(group); disposeGeo(group); caps = null; }
    parts = next;
    group = new THREE.Group();
    HouseModel.rootGroups(parts).forEach(g => group.add(g));
    scene.add(group);
  }
  let caps = null;
  build();

  const toM = 0.001, rs = parts.rects;
  const bx0 = Math.min(...rs.map(r => r.x0)), bx1 = Math.max(...rs.map(r => r.x1));
  const bz0 = Math.min(...rs.map(r => r.z0)), bz1 = Math.max(...rs.map(r => r.z1));
  const center = { x: (bx0 + bx1) / 2 * toM, z: (bz0 + bz1) / 2 * toM, size: Math.max(bx1 - bx0, bz1 - bz0) * toM };
  const floorTop = Math.max(...parts.units.map(u => u.layout.floorTop));
  sky.fitTo(group, (floorTop - S.groundLevel - 2) * toM);
  Skybox.apply('day', { env: sky, controls, sun, ambient, base: { ambient: 0.6, sun: 0.8 }, shadowRoot: group });
  controls.target.set(center.x, 1.2, center.z);
  camera.position.set(center.x - center.size * 0.9, center.size * 0.7, center.z - center.size * 1.3);
  controls.update();

  // Weergave: 3D, doorsnede (dak en lampen weg, wanden afgesneden, snede wit afgedekt) of plattegrond.
  let view = '3d', sectionMM = SECTION.start;
  const poses = {};
  const cutPlane = new THREE.Plane(new THREE.Vector3(0, -1, 0), 0);
  const capMaterial = new THREE.MeshBasicMaterial({ color: 0xffffff });
  function clip(g, planes) {
    if (g) g.traverse(x => (Array.isArray(x.material) ? x.material : x.material ? [x.material] : []).forEach(m => {
      if ((m.clippingPlanes || []).length === planes.length) return;
      m.clippingPlanes = planes;
      m.needsUpdate = true;
    }));
  }
  function placeCut() {
    cutPlane.constant = (floorTop + sectionMM) * toM;
    if (caps) { group.remove(caps); disposeGeo(caps); caps = null; }
    if (view === 'cut') { caps = HouseModel.sectionCaps(parts, floorTop + sectionMM, capMaterial, ViewLayers.all()); group.add(caps); }
  }
  function applyView() {
    const cut = view === 'cut', roof = !cut && layers.dak !== false;
    parts.units.forEach(u => { if (u.roof.group) u.roof.group.visible = roof; });
    [parts.roofEdgeGroup, parts.postsGroup].forEach(g => { if (g) g.visible = roof; });
    if (parts.roomsGroup && parts.roomsGroup.userData.ceilings) parts.roomsGroup.userData.ceilings.visible = roof;
    const planes = cut ? [cutPlane] : [];
    HouseModel.allWallPieces(parts).forEach(x => clip(x.group, planes));
    [parts.elektraGroup, parts.chimneysGroup, parts.roomsGroup, parts.fixturesGroup, parts.lightingGroup].forEach(g => clip(g, planes));
    placeCut();
    if (view === 'plan') drawPlan();
  }
  // Snijhoogte niet hoger dan de laagste goot (plat dak: de dakhoogte), zodat de snede door alle gevels gaat.
  const cutInput = $('.vw-cutbar input');
  const lows = st.settings.roof.house && st.settings.roof.house.enabled && st.settings.roof.house.form
    ? [st.settings.roof.house.form.low] : st.units.map(u => UnitModel.roofForm(u.unit).low);
  cutInput.max = Math.max(SECTION.min, Math.floor(Math.min(...lows.filter(Number.isFinite), SECTION.max) / 50) * 50);
  sectionMM = Math.min(sectionMM, Number(cutInput.max));
  cutInput.value = sectionMM;
  $('.vw-cutbar output').textContent = meters(sectionMM);
  cutInput.addEventListener('input', () => {
    sectionMM = Number(cutInput.value);
    $('.vw-cutbar output').textContent = meters(sectionMM);
    placeCut();
  });
  function setView(v) {
    if (v === view) return;
    if (view !== 'plan') poses[view] = { pos: camera.position.clone(), target: controls.target.clone() };
    view = v;
    if (v !== 'plan') {
      const pose = poses[v];
      if (pose) { camera.position.copy(pose.pos); controls.target.copy(pose.target); }
      else {
        controls.target.set(center.x, 0.6, center.z);
        camera.position.set(center.x - center.size * 0.45, center.size * 1.05 + 2, center.z + center.size * 0.75);
      }
      controls.update();
    }
    root.classList.toggle('view-plan', v === 'plan');
    root.classList.toggle('view-cut', v === 'cut');
    root.querySelectorAll('[data-view]').forEach(b => b.classList.toggle('on', b.dataset.view === v));
    $('.vw-hint').textContent = HINTS[v];
    applyView();
  }
  $('.vw-hint').textContent = HINTS['3d'];
  $('.vw-viewbar').addEventListener('click', (e) => { const b = e.target.closest('[data-view]'); if (b) setView(b.dataset.view); });

  // Plattegrond (noord boven), overgenomen uit js/light/light.js (drawPlan).
  function drawPlan() {
    const cv = $('.vw-plan'), W = cv.clientWidth, H = cv.clientHeight;
    if (!W || !H) return;
    const dpr = Math.min(2, window.devicePixelRatio || 1);
    cv.width = Math.round(W * dpr); cv.height = Math.round(H * dpr);
    const ctx = cv.getContext('2d');
    ctx.setTransform(dpr, 0, 0, dpr, 0, 0);
    ctx.fillStyle = '#ffffff';
    ctx.fillRect(0, 0, W, H);
    const p = parts;
    const ext = rs.concat(p.units.map(u => u.roof.rect));
    const ex0 = Math.min(...ext.map(r => r.x0)), ex1 = Math.max(...ext.map(r => r.x1));
    const ez0 = Math.min(...ext.map(r => r.z0)), ez1 = Math.max(...ext.map(r => r.z1));
    const top = 64, side = 56;
    const scale = Math.min((W - 2 * side) / (ex1 - ex0), (H - top - side) / (ez1 - ez0));
    const ox = W / 2 - (ex0 + ex1) / 2 * scale, oy = top + (H - top - side) / 2 - (ez0 + ez1) / 2 * scale;
    const P = (x, z) => [ox + x * scale, oy + z * scale];
    const path = (pts, closed) => { ctx.beginPath(); pts.forEach((q, i) => ctx[i ? 'lineTo' : 'moveTo'](...P(q.x, q.z))); if (closed) ctx.closePath(); };
    const corners = (pl, lx0, lx1) => { const t = pl.thickness / 2; return [[lx0, -t], [lx1, -t], [lx1, t], [lx0, t]].map(([a, b]) => UnitModel.localToWorld(pl, a, b)); };
    const rgba = (hex, a) => `rgba(${parseInt(hex.slice(1, 3), 16)}, ${parseInt(hex.slice(3, 5), 16)}, ${parseInt(hex.slice(5, 7), 16)}, ${a})`;
    ctx.lineJoin = 'round';

    // Dakrand
    ctx.setLineDash([5, 4]); ctx.strokeStyle = '#9aa3ad'; ctx.lineWidth = 1;
    if (p.roofEdge) p.roofEdge.segments.forEach(sg => { path([sg.outerA, sg.outerB]); ctx.stroke(); });
    else p.units.forEach(u => { const [x, y] = P(u.roof.rect.x0, u.roof.rect.z0); ctx.strokeRect(x, y, u.roof.rect.W * scale, u.roof.rect.D * scale); });
    ctx.setLineDash([]);

    // Ruimtes
    const R = p.rooms;
    R.rooms.forEach(r => { ctx.fillStyle = rgba(r.color, 0.22); r.rects.forEach(c => { const [x, y] = P(c.x0, c.z0); ctx.fillRect(x, y, (c.x1 - c.x0) * scale, (c.z1 - c.z0) * scale); }); });

    // Inrichting
    (p.fixtures || []).forEach(it => FixtureModel.planShapes(it).forEach(sh => {
      ctx.strokeStyle = '#8b939b';
      ctx.lineWidth = sh.kind === 'thin' ? 0.6 : 1;
      ctx.setLineDash(sh.kind === 'dash' ? [3, 3] : []);
      if (sh.circle) { ctx.beginPath(); ctx.arc(...P(sh.circle.x, sh.circle.z), Math.max(1, sh.circle.r * scale), 0, Math.PI * 2); ctx.stroke(); return; }
      if (sh.text) return;
      path(sh.pts, sh.closed);
      if (sh.fill) { ctx.fillStyle = 'rgba(139, 147, 155, 0.18)'; ctx.fill(); }
      ctx.stroke();
    }));
    ctx.setLineDash([]);

    // Wanden met openingen en kozijnsymbolen
    const piece = (x, fill) => {
      const pl = x.place, Wp = pl.width;
      path(corners(pl, -Wp / 2, Wp / 2), true);
      ctx.fillStyle = fill; ctx.fill();
      x.config.openings.filter(op => op.type !== 'schoorsteen').forEach(op => {
        path(corners(pl, -Wp / 2 + op.x, -Wp / 2 + op.x + op.w), true);
        ctx.fillStyle = '#ffffff'; ctx.fill();
        ctx.strokeStyle = '#33383d'; ctx.lineWidth = 0.8; ctx.stroke();
        if (!op.fill) return;
        KozijnModel.planSymbol(op, op.fill, { zIn: -pl.thickness / 2, zOut: pl.thickness / 2 }).forEach(sh => {
          ctx.lineWidth = sh.kind === 'leaf' ? 1.3 : 0.8;
          ctx.setLineDash(sh.kind === 'arc' || sh.kind === 'rail' ? [3, 3] : []);
          path(sh.pts.map(q => UnitModel.localToWorld(pl, -Wp / 2 + op.x + q.x, q.z)), !!sh.closed);
          ctx.stroke();
        });
        ctx.setLineDash([]);
      });
    };
    p.units.forEach(u => u.walls.forEach(w => w.pieces.forEach(x => piece(x, '#3d4247'))));
    p.interior.forEach(x => piece(x, '#7a828a'));
    ctx.fillStyle = '#a07c54';
    p.posts.posts.forEach(pp => { const [x, y] = P(pp.x - pp.size / 2, pp.z - pp.size / 2); ctx.fillRect(x, y, pp.size * scale, pp.size * scale); });
    p.posts.walls.forEach(w => { const [x, y] = P(w.x0, w.z0); ctx.fillStyle = '#3d4247'; ctx.fillRect(x, y, (w.x1 - w.x0) * scale, (w.z1 - w.z0) * scale); });
    (p.chimneys || []).forEach(c => { path(c.footprint, true); ctx.fillStyle = '#8b8f93'; ctx.fill(); });
    // Binnenspots
    ctx.fillStyle = '#ffd36b'; ctx.strokeStyle = '#a07a1e'; ctx.lineWidth = 0.8;
    (p.lighting.indoor || []).forEach(sp => { ctx.beginPath(); ctx.arc(...P(sp.x, sp.z), Math.max(2.5, 90 * scale), 0, Math.PI * 2); ctx.fill(); ctx.stroke(); });

    // Ruimtenamen
    ctx.textAlign = 'center'; ctx.textBaseline = 'middle';
    const fs = Math.max(9, Math.min(13, scale * 260));
    R.rooms.forEach(r => {
      const [x, y] = P(r.label.x, r.label.z);
      ctx.fillStyle = '#212121'; ctx.font = `600 ${fs}px sans-serif`;
      ctx.fillText(r.name, x, y - fs * 0.6);
      ctx.fillStyle = '#5b6673'; ctx.font = `${fs * 0.9}px sans-serif`;
      ctx.fillText(`${nl(r.areaM2, 1)} m²`, x, y + fs * 0.6);
    });

    // Buitenmaten (units) en noordpijl
    ctx.strokeStyle = '#1d5f99'; ctx.fillStyle = '#1d5f99'; ctx.lineWidth = 1; ctx.font = '12px sans-serif';
    const dim = (a, b, horiz, at) => {
      const [x0, y0] = horiz ? P(a, 0) : P(0, a), [x1, y1] = horiz ? P(b, 0) : P(0, b);
      const A = horiz ? [x0, at] : [at, y0], B = horiz ? [x1, at] : [at, y1];
      ctx.beginPath(); ctx.moveTo(...A); ctx.lineTo(...B);
      [A, B].forEach(([x, y]) => { ctx.moveTo(x - 4, y + 4); ctx.lineTo(x + 4, y - 4); ctx.moveTo(...(horiz ? [x, y - 6] : [x - 6, y])); ctx.lineTo(...(horiz ? [x, y + 6] : [x + 6, y])); });
      ctx.stroke();
      ctx.save();
      ctx.translate((A[0] + B[0]) / 2, (A[1] + B[1]) / 2);
      if (!horiz) ctx.rotate(-Math.PI / 2);
      ctx.fillText(nl(Math.round(b - a)), 0, -9);
      ctx.restore();
    };
    dim(bx0, bx1, true, P(0, ez0)[1] - 22);
    dim(bz0, bz1, false, P(ex0, 0)[0] - 22);
    const nx = W - 28, ny = top + 6;
    ctx.beginPath(); ctx.moveTo(nx, ny); ctx.lineTo(nx - 7, ny + 18); ctx.lineTo(nx + 7, ny + 18); ctx.closePath(); ctx.fill();
    ctx.fillText('N', nx, ny + 30);
  }

  // Kerncijfers; de prijs volgt zodra de kosten-CSV's geladen zijn.
  function facts() {
    const totals = HouseModel.computeTotals(parts);
    const d = HouseModel.computeDimensions(parts, S.groundLevel);
    let price = null;
    try { price = CostModel.compute(parts, totals).summary.inclBtw; } catch (err) { console.warn(err); }
    const rows = [
      ['Buitenmaten', `${nl(d.lengthX / 1000, 2)} × ${nl(d.lengthZ / 1000, 2)} m`],
      ['Bouwhoogte', meters(d.height)],
      ['Bruto / leefbaar', `${nl(d.brutoM2, 1)} / ${nl(d.leefbaarM2, 1)} m²`],
      ['Inhoud', `${nl(d.inhoudM3, 0)} m³`],
      ['Units', String(st.units.length)],
      ['Gewicht', `${nl(totals.totalKg / 1000, 1)} t`]
    ];
    if (price) rows.push(['Indicatief incl. btw', `€ ${nl(Math.round(price / 100) * 100)}`]);
    $('.vw-facts').innerHTML = rows.map(([k, v]) => `<div><span>${k}</span><b>${v}</b></div>`).join('');
  }
  facts();
  CostModel.onChange(facts);

  // Scrollwiel: in de CRM-pagina scrolt het de pagina, tenzij je in de 3D hebt geklikt of Ctrl/⌘ ingedrukt houdt.
  const stageEl = $('.vw-stage');
  let engaged = false, toastTimer = null;
  const fsEl = () => document.fullscreenElement || document.webkitFullscreenElement;
  function toast(msg) {
    const t = $('.vw-toast');
    t.textContent = msg;
    t.classList.add('on');
    clearTimeout(toastTimer);
    toastTimer = setTimeout(() => t.classList.remove('on'), 3000);
  }
  stageEl.addEventListener('pointerdown', () => { engaged = true; });
  stageEl.addEventListener('pointerleave', () => { engaged = false; });
  stageEl.addEventListener('wheel', (e) => {
    if (engaged || e.ctrlKey || e.metaKey || view === 'plan' || fsEl() || window.parent === window) return;
    e.stopPropagation();
    toast('Klik eerst in de weergave (of houd Ctrl ingedrukt) om te zoomen.');
  }, { capture: true });

  // Schermvullend
  const fullBtn = $('.vw-full');
  if (root.requestFullscreen || root.webkitRequestFullscreen) {
    fullBtn.hidden = false;
    fullBtn.addEventListener('click', () => {
      const r = fsEl() ? (document.exitFullscreen || document.webkitExitFullscreen).call(document)
        : (root.requestFullscreen || root.webkitRequestFullscreen).call(root);
      if (r && r.catch) r.catch(() => toast('Schermvullend lukt hier niet.'));
    });
    const onFull = () => { root.classList.toggle('is-full', !!fsEl()); fullBtn.title = fsEl() ? 'Schermvullend uit (Esc)' : 'Schermvullend'; };
    document.addEventListener('fullscreenchange', onFull);
    document.addEventListener('webkitfullscreenchange', onFull);
  }

  // Afbeelding van de huidige 3D-weergave
  $('.vw-shot').addEventListener('click', () => {
    if (view === 'plan') { const a = document.createElement('a'); a.href = $('.vw-plan').toDataURL('image/png'); a.download = 'plattegrond.png'; a.click(); return; }
    renderer.render(scene, camera);
    const a = document.createElement('a');
    a.href = renderer.domElement.toDataURL('image/png');
    a.download = `${(st.project && st.project.naam) || 'ontwerp'}.png`;
    a.click();
  });

  // Lagenmenu: bouwfase (alles tot en met) of losse lagen; elke wijziging bouwt de woning opnieuw op.
  const layerPop = $('.vw-pop-layers'), phaseSel = layerPop.querySelector('select');
  phaseSel.innerHTML = `<option value="" hidden>Eigen keuze</option><option value="af">Afgewerkte woning</option>` +
    ViewLayers.PHASES.slice(0, -1).map((p, i) => `<option value="${i}">${i + 1}. t/m ${p.toLowerCase()}</option>`).join('');
  const LAYER_KEYS = ViewLayers.LIST.filter(l => l.key !== 'maten');
  layerPop.querySelector('.vw-checks').innerHTML = LAYER_KEYS.map(l =>
    `<label title="${l.hint || ''}"><input type="checkbox" data-layer="${l.key}" checked> ${l.label}</label>`).join('');
  const syncChecks = () => layerPop.querySelectorAll('[data-layer]').forEach(c => { c.checked = layers[c.dataset.layer] !== false; });
  function relayer(next, fin) {
    layers = next; finished = fin;
    root.classList.add('is-busy');
    $('.vw-layers-btn').classList.toggle('on', !fin);
    setTimeout(() => {
      try { build(); Skybox.apply('day', { env: sky, controls, sun, ambient, base: { ambient: 0.6, sun: 0.8 }, shadowRoot: group }); applyView(); }
      catch (err) { console.error(err); toast('Deze lagen konden niet worden opgebouwd.'); }
      root.classList.remove('is-busy');
    }, 20);
  }
  phaseSel.addEventListener('change', () => {
    const v = phaseSel.value;
    // Bij een bouwfase het dak eraf, zodat je in de woning kijkt (aanzetten kan met de laag Dak).
    relayer(v === 'af' ? ViewLayers.all() : Object.assign(ViewLayers.upTo(Number(v)), { dak: false, maten: true }), v === 'af');
    syncChecks();
  });
  layerPop.addEventListener('change', (e) => {
    const c = e.target.closest('[data-layer]');
    if (!c) return;
    const next = Object.assign({}, layers, { [c.dataset.layer]: c.checked });
    const phase = ViewLayers.phaseOf(next);
    phaseSel.value = LAYER_KEYS.every(l => next[l.key] !== false) ? 'af' : phase >= 0 && phase < ViewLayers.PHASES.length - 1 ? String(phase) : '';
    relayer(next, phaseSel.value === 'af');
  });
  // Uitklappanelen (lagen, PDF): één open; klik ernaast sluit.
  root.querySelectorAll('[data-pop]').forEach(btn => btn.addEventListener('click', (e) => {
    e.stopPropagation();
    const pop = $(btn.dataset.pop), open = pop.hidden;
    root.querySelectorAll('.vw-pop').forEach(x => { x.hidden = true; });
    pop.hidden = !open;
  }));
  root.querySelectorAll('.vw-pop').forEach(p => p.addEventListener('click', (e) => e.stopPropagation()));
  document.addEventListener('click', () => root.querySelectorAll('.vw-pop').forEach(x => { x.hidden = true; }));

  // PDF (werktekening / klant): de PDF-modules van de configurator pas laden als ze nodig zijn.
  const PDF_SCRIPTS = ['js/vendor/jspdf.umd.min.js', 'js/core/logo-data.js', 'js/core/pdf-sheet.js', 'js/wall/wall-pdf.js',
    'js/floor/floor-pdf.js', 'js/elektra/elektra-pdf.js', 'js/house/house-pdf.js', 'js/vendor/qrcode.js', 'js/light/light-pdf.js'];
  let pdfLoading = null;
  const loadScript = (src) => new Promise((ok, fail) => {
    const sc = document.createElement('script');
    sc.src = src; sc.onload = ok; sc.onerror = () => fail(new Error(`${src} niet geladen`));
    document.head.appendChild(sc);
  });
  const loadPdf = () => pdfLoading || (pdfLoading = PDF_SCRIPTS.reduce((p, src) => p.then(() => loadScript(src)), Promise.resolve())
    .then(() => Promise.all(HousePdf.materialThumbUrls(st).map(url => new Promise(ok => {
      PdfSheet.preloadImage(url);
      const img = new Image(); img.onload = img.onerror = ok; img.src = url;
    })))).then(() => new Promise(ok => setTimeout(ok, 100))));
  const costsReady = new Promise(ok => {
    if (CostCsv.status('intern').loadedAt) ok();
    else { CostCsv.onChange(ok); setTimeout(ok, 6000); }
  });
  const PDF_LABEL = { werk: 'Werktekening', klant: 'Klant-PDF' };
  const pdfs = cfg.pdfs || {};
  function renderPdfs() {
    $('.vw-pop-pdf .vw-pdfs').innerHTML = ['werk', 'klant'].map(k => {
      const f = pdfs[k];
      return `<div class="vw-pdf"><div><b>${PDF_LABEL[k]}</b><span>${k === 'werk' ? 'Alle tekenbladen, elektra, zaaglijst en kosten (intern)' : 'Zoals de configurator: voorblad, aanzichten, plattegrond en werkwijze (ook in het klantportaal)'}</span>
        ${f ? `<span>Gemaakt ${f.date}</span>` : ''}</div>
        <div>${f ? `<a href="${f.url}" target="_blank" rel="noopener">Openen</a>` : ''}
        ${cfg.pdfUrl ? `<button type="button" data-make="${k}">${f ? 'Opnieuw' : 'Maken'}</button>` : ''}</div></div>`;
    }).join('');
  }

  // Klant-PDF zoals de light-configurator (js/light/light.js savePdf): LightPdf met beeld, kerncijfers en keuzes.
  // De keuzes leest de CRM uit het ontwerp zelf (de light-keuzes komen niet mee in de house-design-JSON);
  // zelfde onderwerpen en woorden als LightModel.describe.
  const ROOF_NAMES = { plat: 'plat dak', lessenaar: 'lessenaardak', zadel: 'zadeldak', wolf: 'wolfsdak' };
  const SIDE_NAMES = { voor: 'noord', achter: 'zuid', links: 'west', rechts: 'oost' };
  const FACADES = { rabat: 'Hout', fels: 'Felsplaten', stuc: 'Stucwerk', steen: 'Steenstrips' };
  const LIGHTING = { geen: 'Geen', spots: 'Spots in de dakrand', gevel: 'Gevellampen' };
  const cap = (t) => t ? t.charAt(0).toUpperCase() + t.slice(1) : t;
  const label = (list, key) => (list && list[key] && list[key].label) || '';
  function choices() {
    const R = S.roof, F = S.facade, rows = [];
    const way = (f) => f.type === 'lessenaar' ? ` (hoog aan de ${SIDE_NAMES[f.dir] || f.dir}kant)`
      : UnitModel.hasRidge(f.type) && UnitModel.RIDGES[f.ridge] ? ` (nok ${UnitModel.RIDGES[f.ridge].toLowerCase()})` : '';
    const nok = (f) => f.type === 'plat' ? '' : `, ${f.type === 'lessenaar' ? 'hoge kant' : 'nok'} ${nl(f.high / 1000, 2)} m`;
    const house = R.house && R.house.enabled && R.house.form;
    const forms = house ? [R.house.form] : st.units.map(u => UnitModel.roofForm(u.unit));
    const per = (fn) => { const v = forms.map(fn); return v.every(x => x === v[0]) ? v[0] : v.map((x, i) => `unit ${st.units[i].id}: ${x}`).join(', '); };
    rows.push(['Dakvorm', cap(per(f => (ROOF_NAMES[f.type] || f.type) + way(f)) + (house ? ' over de hele woning' : ''))]);
    rows.push(['Hoogte', cap(per(f => `goot ${nl(f.low / 1000, 2)} m${nok(f)}`))]);
    const covers = [...new Set(st.units.map(u => label(RoofModel.COVERINGS, u.roof.covering) || label(RoofModel.COVERINGS, 'dakleer')))];
    rows.push(['Dakbedekking', covers.join(', ')]);
    const color = F.type === 'steen' ? `steen ${F.stone}` : F.type === 'rabat' ? label(WallModel.RABAT_COLORS, F.rabatColor)
      : F.type === 'stuc' ? label(WallModel.STUC_COLORS, F.stucColor) : label(WallModel.FELS.COLORS, F.felsColor);
    rows.push(['Gevel', cap([(FACADES[F.type] || F.type || '').toLowerCase(), F.type === 'rabat' ? S.cladding : null, color.toLowerCase()].filter(Boolean).join(', '))]);
    const tr = S.trasraam || {};
    rows.push(['Trasraam', tr.enabled ? `Steen ${tr.finish}, ${nl(tr.height / 1000, 2)} m hoog` : 'Geen']);
    const fascia = st.units.some(u => u.roof.fascia !== false);
    rows.push(['Dakrand', fascia ? `Boeidelen ${label(RoofModel.FASCIA_COLORS, R.fasciaColor).toLowerCase()}`.trim() : 'Daktrim']);
    const L = S.lighting || {};
    rows.push(['Buitenverlichting', (LIGHTING[L.mode] || 'Geen') + (L.mode === 'gevel' && LightingModel.DIRECTIONS[L.direction] ? ` (${LightingModel.DIRECTIONS[L.direction].toLowerCase()})` : '')]);
    rows.push(['Binnenverlichting', L.indoor ? 'Inbouwspots in het plafond' : 'Geen']);
    return rows;
  }
  // Beeld voor het voorblad: de afgewerkte woning in 3D (ook vanuit doorsnede, plattegrond of een laag), vaste resolutie.
  function snapshot() {
    const W = 1600, H = 1500, pr = renderer.getPixelRatio();
    const keep = { view, layers, finished, pos: camera.position.clone(), target: controls.target.clone() };
    const rebuild = () => { build(); Skybox.apply('day', { env: sky, controls, sun, ambient, base: { ambient: 0.6, sun: 0.8 }, shadowRoot: group }); };
    if (!finished) { layers = ViewLayers.all(); finished = true; rebuild(); }
    if (view !== '3d') {
      view = '3d'; applyView();
      if (poses['3d']) { camera.position.copy(poses['3d'].pos); controls.target.copy(poses['3d'].target); }
    }
    renderer.setPixelRatio(1);
    renderer.setSize(W, H, false);
    camera.aspect = W / H;
    camera.updateProjectionMatrix();
    controls.update();
    renderer.render(scene, camera);
    const url = renderer.domElement.toDataURL('image/jpeg', 0.88);
    renderer.setPixelRatio(pr);
    if (!keep.finished) { layers = keep.layers; finished = false; rebuild(); }
    view = keep.view;
    applyView();
    camera.position.copy(keep.pos);
    controls.target.copy(keep.target);
    controls.update();
    resize();
    return { url, width: W, height: H };
  }
  function customerPdf() {
    const raw = JSON.parse(document.getElementById('design').textContent);
    const key = raw.model || '', model = (HouseModel.MODELS || {})[key];
    const name = (st.project && st.project.naam) || (model && model.label) || 'Uw woning';
    // Afgewerkte woning met 3D, zoals light.js: met skip3D hebben de wandstukken geen specs (gewicht) en faalt computeTotals.
    const full = HouseModel.computeParts(st, Object.assign({ layers: ViewLayers.all(), finishedOnly: true }, mats));
    HouseModel.rootGroups(full).forEach(disposeGeo);
    const totals = HouseModel.computeTotals(full), d = HouseModel.computeDimensions(full, S.groundLevel);
    const info = {
      price: CostModel.compute(full, totals).summary.inclBtw, kg: totals.totalKg, units: st.units.length,
      lengthX: d.lengthX, lengthZ: d.lengthZ, height: d.height, brutoM2: d.brutoM2, leefbaarM2: d.leefbaarM2, inhoudM3: d.inhoudM3
    };
    let image = null;
    try { image = snapshot(); } catch (err) { console.warn(err); }
    const pdfSt = HouseModel.clone(st);
    pdfSt.project = Object.assign({}, pdfSt.project, { naam: name, opmerking: (pdfSt.project && pdfSt.project.opmerking) || 'Indicatief ontwerp' });
    return LightPdf.generate({ st: pdfSt, label: name, info, choices: choices(), url: LightPdf.modelUrl(key), image });
  }

  let making = Promise.resolve();
  function makePdf(kind) {
    making = making.then(() => {
      toast(`${PDF_LABEL[kind]} wordt gemaakt…`);
      return Promise.all([loadPdf(), costsReady]);
    }).then(() => new Promise(ok => setTimeout(ok, 30))).then(() => {
      const doc = kind === 'klant' ? customerPdf() : HousePdf.generate(st);
      const body = new FormData();
      body.append('kind', kind);
      body.append('pdf', doc.output('blob'), `${kind}.pdf`);
      return fetch(cfg.pdfUrl, { method: 'POST', body, credentials: 'same-origin' }).then(r => r.ok ? r.json() : Promise.reject(new Error(`HTTP ${r.status}`)));
    }).then(res => {
      pdfs[kind] = res;
      renderPdfs();
      toast(`${PDF_LABEL[kind]} opgeslagen bij het contact.`);
      if (window.parent !== window) window.parent.postMessage({ type: 'tectum-pdf', kind, url: res.url, date: res.date }, location.origin);
    }).catch(err => { console.error(err); toast(`${PDF_LABEL[kind]} maken lukte niet: ${err.message}`); });
    return making;
  }
  $('.vw-pop-pdf').addEventListener('click', (e) => { const b = e.target.closest('[data-make]'); if (b) makePdf(b.dataset.make); });
  renderPdfs();
  // Direct aanwezig: ontbrekende PDF's maken zodra de weergave staat.
  if (cfg.pdfUrl && cfg.auto) setTimeout(() => ['werk', 'klant'].filter(k => !pdfs[k]).forEach(makePdf), 1500);

  function resize() {
    const w = stage.clientWidth, h = stage.clientHeight;
    if (!w || !h) return;
    camera.aspect = w / h;
    camera.updateProjectionMatrix();
    renderer.setSize(w, h);
  }
  new ResizeObserver(() => { resize(); if (view === 'plan') drawPlan(); }).observe(stage);
  resize();
  applyView();
  root.classList.remove('is-busy');
  (function loop() {
    requestAnimationFrame(loop);
    if (view !== 'plan' && !document.hidden) renderer.render(scene, camera);
  })();
})();