/*!
 * Tectum
 * Copyright © 2026 Machiel Heinen.
 * Alle rechten voorbehouden. Gebruik uitsluitend met schriftelijke toestemming.
 * Zie LICENTIE.md.
 */
const APP_VERSION = '0.7.3';
// 0.0.X per kleine iteratie, 0.X.0 per mijlpaal, X.0.0 bij live-gang.

let tabs = [];
let activeTabId = null;
let tabIdCounter = 1;
let kindCounters = {};
let currentEditor = null;

function editorModuleFor(kind) {
  if (kind === 'muur') return window.WallEditor;
  if (kind === 'vloer') return window.FloorEditor;
  if (kind === 'woning') return window.HouseEditor;
  return null;
}

function defaultNameFor(kind) {
  kindCounters[kind] = (kindCounters[kind] || 0) + 1;
  return `${kind} ${String(kindCounters[kind]).padStart(2, '0')}`;
}

function setWorkspaceEmpty() {
  document.getElementById('workspace').innerHTML = `<div id="workspace-empty">
    <div>Geen ontwerp geopend.</div>
    <div style="font-size:12px;">Bestand &rsaquo; Nieuw (Ctrl+N)</div>
  </div>`;
}

const editorHas = (fn) => !!(currentEditor && typeof currentEditor[fn] === 'function' && (!currentEditor.can || currentEditor.can(fn)));
const editorCall = (fn, ...args) => { if (editorHas(fn)) return currentEditor[fn](...args); };
const viewState = () => editorCall('viewState') || {};

// Menu met de sneltoets per item; KEY_HELP hieronder is het overzicht (Help › Sneltoetsen). Editor-acties werken alleen als de editor ze kent.
const MENUS = [
  { label: 'Bestand', items: [
    { label: 'Nieuw…', icon: 'file-earmark-plus', keys: 'Ctrl+N', run: openNewModal },
    { label: 'Openen…', icon: 'folder2-open', keys: 'Ctrl+O', run: () => editorCall('triggerImport'), enabled: () => editorHas('triggerImport') },
    { label: 'Opslaan (JSON + PDF)', icon: 'save', keys: 'Ctrl+S', run: () => editorCall('exportDesign'), enabled: () => editorHas('exportDesign') },
    { sep: true }, { head: 'Exporteren' },
    { label: 'CAD (DXF)', icon: 'vector-pen', run: () => editorCall('exportDxf'), enabled: () => editorHas('exportDxf') },
    { label: 'BIM (IFC)', icon: 'boxes', run: () => editorCall('exportIfc'), enabled: () => editorHas('exportIfc') },
    { label: 'Render (OBJ)', icon: 'badge-3d', run: () => editorCall('exportObj'), enabled: () => editorHas('exportObj') },
    { sep: true },
    { label: 'Projectgegevens…', icon: 'card-text', run: () => editorCall('openProjectProperties'), enabled: () => editorHas('openProjectProperties') },
    { label: 'Kosten & tijden…', icon: 'calculator', run: () => CostSettings.open() },
    { sep: true },
    { label: 'Ontwerp sluiten', icon: 'x-lg', run: () => activeTabId !== null && closeTab(activeTabId), enabled: () => activeTabId !== null }
  ] },
  { label: 'Beeld', items: [
    ...UI.VIEWS.map(v => ({ label: v.label, icon: v.icon, keys: v.key1, run: () => editorCall('setView', v.key),
      enabled: () => editorHas('setView'), checked: () => viewState().view === v.key })),
    { label: 'Rapport', icon: 'clipboard-data', keys: '4', run: () => editorCall('toggleReport'), enabled: () => editorHas('toggleReport'), checked: () => !!viewState().report },
    { sep: true },
    { label: 'Doorsnede', icon: 'scissors', keys: 'X', run: () => editorCall('toggleSection'), enabled: () => editorHas('toggleSection'), checked: () => !!viewState().section },
    { label: 'Plattegrond passend', icon: 'aspect-ratio', keys: 'F', run: () => editorCall('fitView'), enabled: () => editorHas('fitView') },
    { label: 'Lopen', icon: 'person-walking', keys: 'L', run: () => editorCall('toggleWalk'), enabled: () => editorHas('toggleWalk'), checked: () => !!viewState().walk },
    { sep: true },
    { label: 'Panelen verbergen', icon: 'layout-sidebar-inset', keys: 'Ctrl+\\', run: togglePanels, checked: () => document.body.classList.contains('panels-hidden') },
    { label: 'Volledig scherm', icon: 'fullscreen', keys: 'F11', run: toggleBrowserFullscreen, checked: () => !!document.fullscreenElement }
  ] },
  { label: 'Help', items: [
    { label: 'Sneltoetsen en bediening', icon: 'keyboard', keys: '?', run: openKeys },
    { label: 'Over Tectum', icon: 'info-circle', run: () => document.getElementById('about-overlay').classList.add('open') }
  ] }
];

const KEY_HELP = [
  ['Bestand', [['Ctrl+N', 'Nieuw ontwerp'], ['Ctrl+O', 'Openen'], ['Ctrl+S', 'Opslaan (JSON + PDF)']]],
  ['Gereedschap (woning)', [['V', 'Selecteren'], ['W', 'Binnenwand tekenen'], ['R', 'Ruimte vullen'], ['I', 'Inrichting plaatsen'],
    ['Esc', 'Gereedschap stoppen, daarna selectie opheffen'], ['Del', 'Selectie verwijderen'], ['D / Shift+D', 'Inrichting draaien'], ['Dubbelklik', 'Onderdeel bewerken (wand, vloer)']]],
  ['Beeld', [['1 / 2 / 3', '2D + 3D, alleen 2D, alleen 3D'], ['4', 'Rapport aan/uit'], ['X', 'Doorsnede aan/uit'], ['F', 'Plattegrond passend'],
    ['L', 'Lopen aan/uit'], ['Ctrl+\\', 'Panelen verbergen'], ['F11', 'Volledig scherm']]],
  ['Wand-editor', [['Shift+H', 'Horizontaal spiegelen']]],
  ['3D rondkijken', [['Slepen', 'Draaien'], ['Rechts slepen', 'Verschuiven'], ['Scrollwiel', 'Zoomen']], true],
  ['Plattegrond', [['Scrollwiel', 'Zoomen'], ['Slepen op lege plek', 'Verschuiven'], ['Middelste muisknop', 'Verschuiven']], true],
  ['Lopen', [['W / S', 'Vooruit / achteruit (ook pijl op/neer)'], ['A / D', 'Opzij'], ['← / →', 'Draaien'], ['Shift', 'Rennen'], ['E', 'Deur of schakelaar bedienen'], ['L / Esc', 'Stoppen met lopen']]],
  ['Rondkijken tijdens lopen', [['Slepen', 'Rondkijken']], true]
];

function openKeys() {
  // Muisacties als tekst, toetsen als <kbd>.
  document.getElementById('keys-body').innerHTML = KEY_HELP.map(([title, rows, mouse]) =>
    `<section><h3>${title}</h3>${rows.map(([k, d]) => `<div class="keys-row"><span>${mouse ? `<span class="keys-mouse">${k}</span>`
      : k.split(' / ').map(x => `<kbd>${x}</kbd>`).join(' / ')}</span><span>${d}</span></div>`).join('')}</section>`).join('');
  document.getElementById('keys-overlay').classList.add('open');
}

function togglePanels() {
  document.body.classList.toggle('panels-hidden');
  window.dispatchEvent(new Event('resize'));
}

function renderTabBar() {
  const bar = document.getElementById('doc-tabs');
  bar.innerHTML = tabs.map(tab => `
    <div class="doc-tab ${tab.id === activeTabId ? 'active' : ''}" data-tab-id="${tab.id}" role="tab" aria-selected="${tab.id === activeTabId}" title="${UI.esc(tab.name)}">
      <span class="doc-name">${UI.esc(tab.name)}</span>
      <button type="button" class="doc-close" data-close-id="${tab.id}" title="Sluiten" aria-label="Sluiten">&times;</button>
    </div>
  `).join('');
  document.getElementById('top-save').disabled = !editorHas('exportDesign');
}

function onTabSaved(tab, filenameWithExt) {
  const base = filenameWithExt.replace(/\.json$/i, '');
  tab.name = base;
  tab.savedName = base;
  renderTabBar();
}

function mountEditorForTab(tab) {
  const ws = document.getElementById('workspace');
  ws.innerHTML = '';
  currentEditor = editorModuleFor(tab.kind).mount(ws, { onSaved: (filename) => onTabSaved(tab, filename), template: tab.template, cameraKey: 'tab' + tab.id });
  if (tab.stateJson && typeof currentEditor.loadStateJson === 'function') {
    currentEditor.loadStateJson(tab.stateJson);
  }
}

function switchToTab(tabId) {
  if (activeTabId === tabId) return;
  const oldTab = tabs.find(t => t.id === activeTabId);
  if (oldTab && currentEditor && typeof currentEditor.getStateJson === 'function') {
    oldTab.stateJson = currentEditor.getStateJson();
  }
  if (currentEditor && typeof currentEditor.unmount === 'function') currentEditor.unmount();
  currentEditor = null;

  activeTabId = tabId;
  mountEditorForTab(tabs.find(t => t.id === tabId));
  renderTabBar();
}

function openNew(kind, template) {
  if (!editorModuleFor(kind)) return;

  const oldTab = tabs.find(t => t.id === activeTabId);
  if (oldTab && currentEditor && typeof currentEditor.getStateJson === 'function') {
    oldTab.stateJson = currentEditor.getStateJson();
  }
  if (currentEditor && typeof currentEditor.unmount === 'function') currentEditor.unmount();
  currentEditor = null;

  const tab = { id: tabIdCounter++, kind, template: template || null, name: defaultNameFor(kind), savedName: null, stateJson: null };
  tabs.push(tab);
  activeTabId = tab.id;
  mountEditorForTab(tab);
  renderTabBar();
}

function isTabDirty(tab) {
  const module = editorModuleFor(tab.kind);
  if (!module || typeof module.getDefaultState !== 'function') return false;
  const state = (tab.id === activeTabId && currentEditor && typeof currentEditor.getStateJson === 'function')
    ? currentEditor.getStateJson()
    : tab.stateJson;
  if (!state) return false;
  return JSON.stringify(state) !== JSON.stringify(module.getDefaultState(tab.template));
}

function closeTab(tabId) {
  const tab = tabs.find(t => t.id === tabId);
  if (!tab) return;

  if (tab.id !== activeTabId) {
    if (!isTabDirty(tab)) {
      tabs = tabs.filter(t => t.id !== tabId);
      renderTabBar();
      return;
    }
    switchToTab(tabId);
  }

  if (isTabDirty(tab) && currentEditor && typeof currentEditor.exportDesign === 'function') {
    const saved = currentEditor.exportDesign();
    if (!saved) return;
  }

  tabs = tabs.filter(t => t.id !== tabId);
  if (currentEditor && typeof currentEditor.unmount === 'function') currentEditor.unmount();
  currentEditor = null;
  activeTabId = null;

  if (tabs.length > 0) {
    switchToTab(tabs[tabs.length - 1].id);
  } else {
    setWorkspaceEmpty();
    renderTabBar();
  }
}

function wireTabBar() {
  document.getElementById('doc-tabs').addEventListener('click', (e) => {
    const closeBtn = e.target.closest('.doc-close');
    if (closeBtn) { closeTab(parseInt(closeBtn.dataset.closeId, 10)); return; }
    const item = e.target.closest('.doc-tab');
    if (item) switchToTab(parseInt(item.dataset.tabId, 10));
  });
}

function renderLicenseHtml(md) {
  const esc = (t) => t.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
  return md.trim().split(/\n\s*\n/).map(block => {
    const b = block.trim();
    if (b.startsWith('## ')) return `<h4>${esc(b.slice(3))}</h4>`;
    if (b.startsWith('# ')) return `<h3>${esc(b.slice(2))}</h3>`;
    return `<p>${esc(b.replace(/\s*\n\s*/g, ' '))}</p>`;
  }).join('');
}

function wireAbout() {
  const overlay = document.getElementById('about-overlay');
  document.getElementById('about-license').innerHTML = renderLicenseHtml(window.TECTUM_LICENSE_MD || '');
  document.getElementById('about-close').addEventListener('click', () => overlay.classList.remove('open'));
  overlay.addEventListener('click', (e) => { if (e.target === overlay) overlay.classList.remove('open'); });
}

function wireNewModal() {
  const overlay = document.getElementById('new-overlay');
  overlay.querySelector('.new-options').insertAdjacentHTML('afterbegin', Object.entries(HouseModel.MODELS).map(([key, m]) =>
    `<button class="new-option" data-kind="woning" data-template="${key}"><i class="bi bi-${m.icon}"></i><span>${m.label}</span></button>`).join(''));
  overlay.addEventListener('click', (e) => { if (e.target === overlay) overlay.classList.remove('open'); });
  document.querySelectorAll('.new-option:not(.disabled)').forEach(opt => {
    opt.addEventListener('click', () => {
      openNew(opt.dataset.kind, opt.dataset.template);
      overlay.classList.remove('open');
    });
  });
}

function openNewModal() {
  document.getElementById('new-overlay').classList.add('open');
}

function toggleBrowserFullscreen() {
  if (document.fullscreenElement) document.exitFullscreen();
  else document.documentElement.requestFullscreen();
}

// Alle dialogen; Esc gebruikt hun Annuleren-knop (data-esc), zodat bijv. projectgegevens worden teruggezet.
const OVERLAYS = '.dlg-overlay.open, #about-overlay.open, #new-overlay.open, #house-project-overlay.open, #wall-project-overlay.open, #cost-settings-overlay.open';
function closeOverlays() {
  const open = document.querySelector(OVERLAYS);
  if (open) {
    const cancel = open.querySelector('[data-esc]');
    if (cancel) cancel.click(); else open.classList.remove('open');
    return true;
  }
  return Menubar.close() || UI.closePopovers();
}

function wireHotkeys() {
  document.addEventListener('keydown', (e) => {
    const inField = ['INPUT', 'SELECT', 'TEXTAREA'].includes(document.activeElement.tagName);
    const k = e.key.toLowerCase();
    // Dialoog open: alleen Esc (sluiten); geen sneltoetsen naar de editor erachter. Typen in de dialoog blijft werken.
    if (document.querySelector(OVERLAYS)) {
      if (e.key === 'Escape') closeOverlays();
      e.stopImmediatePropagation();
      return;
    }
    if (e.ctrlKey || e.metaKey) {
      const act = { s: () => editorCall('exportDesign'), n: openNewModal, o: () => editorCall('triggerImport'), '\\': togglePanels }[k];
      if (act && !e.altKey && !e.shiftKey) { e.preventDefault(); act(); }
      return;
    }
    if (e.key === 'Escape' && closeOverlays()) { e.stopImmediatePropagation(); return; }
    if (inField || e.altKey || viewState().walk && !['l', 'escape'].includes(k)) return;
    const view = UI.VIEWS.find(v => v.key1 === e.key);
    if (view) editorCall('setView', view.key);
    else if (e.key === '4') editorCall('toggleReport');
    else if (k === 'x') editorCall('toggleSection');
    else if (k === 'f') editorCall('fitView');
    else if (k === 'l') editorCall('toggleWalk');
    else if (k === 'h' && e.shiftKey) editorCall('mirrorHorizontal');
    else if (e.key === '?') openKeys();
  }, true);
}

document.addEventListener('DOMContentLoaded', () => {
  document.querySelectorAll('.app-version-slot').forEach(el => { el.textContent = 'v' + APP_VERSION; });
  document.querySelectorAll('.app-version-number').forEach(el => { el.textContent = APP_VERSION; });
  Menubar.init(document.getElementById('menubar'), MENUS);
  document.getElementById('top-save').addEventListener('click', () => editorCall('exportDesign'));
  document.getElementById('keys-overlay').addEventListener('click', (e) => {
    if (e.target.id === 'keys-overlay' || e.target.closest('[data-close]')) document.getElementById('keys-overlay').classList.remove('open');
  });
  wireAbout();
  wireNewModal();
  wireHotkeys();
  wireTabBar();
  if (location.protocol === 'file:') {
    const note = document.createElement('div');
    note.className = 'ui-warn file-protocol-warning';
    note.innerHTML = '<i class="bi bi-exclamation-triangle"></i><span>Tectum is geopend als bestand. Start het via een webserver: <code>./start.sh</code> of <code>python3 -m http.server</code>, en open <code>http://localhost:8000</code>. De omgeving (Dag/Nacht) werkt anders niet.</span>';
    document.body.appendChild(note);
  }
  openNew('woning', 'amstel');

  setTimeout(() => {
    const splash = document.getElementById('splash-screen');
    if (splash) splash.remove();
  }, 4300);
});