/*!
 * Tectum
 * Copyright © 2026 Machiel Heinen.
 * Alle rechten voorbehouden. Gebruik uitsluitend met schriftelijke toestemming.
 * Zie LICENTIE.md.
 */
// ============================================================
// core/ui-kit.js — gedeelde UI-bouwstenen (window.UI): iconen (Bootstrap
// Icons, css/vendor), invoervelden, schakelaars, secties, tabbladen,
// specificatie-kaarten en de 3-staps weergave-cyclus (sneltoets T).
// Eén plek voor opmaak en woordgebruik, zodat alle panelen gelijk ogen.
//
// Woordgebruik labels: zelfstandig naamwoord met hoofdletter, geen dubbele
// punt, geen uitleg tussen haakjes (die gaat in een hint), eenheid rechts
// van het veld. Bijvoorbeeld "Afstand min." i.p.v. "Lampen min. h.o.h.".
// Plain script (geen ES-module).
// ============================================================

window.UI = (() => {
  const esc = (s) => String(s).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;');
  const icon = (name, cls) => `<i class="bi bi-${name}${cls ? ' ' + cls : ''}" aria-hidden="true"></i>`;
  const hint = (text) => text ? `<span class="ui-hint" title="${esc(text)}">${icon('info-circle')}</span>` : '';

  function field(id, label, control, o) {
    return `<div class="ui-field${o && o.disabled ? ' is-disabled' : ''}"><label for="${id}">${label}${hint(o && o.hint)}</label><div class="ui-control">${control}</div></div>`;
  }

  // Getal. o: { step, unit ('mm' standaard, '' = geen), hint, min, disabled }
  function num(id, label, value, o) {
    o = o || {};
    const unit = o.unit === undefined ? 'mm' : o.unit;
    return field(id, label,
      `<input type="number" id="${id}" value="${value}" step="${o.step || 50}"${o.min !== undefined ? ` min="${o.min}"` : ''}${o.disabled ? ' disabled' : ''}>` +
      `<span class="ui-unit">${unit}</span>`, o);
  }

  // Keuzelijst. options: { waarde: 'Label' }.
  function sel(id, label, options, value, o) {
    const opts = Object.entries(options).map(([k, v]) => `<option value="${k}"${k === value ? ' selected' : ''}>${v}</option>`).join('');
    return field(id, label, `<select id="${id}">${opts}</select><span class="ui-unit"></span>`, o);
  }

  // Kleurkiezer (waarde '#rrggbb'); onColor reageert pas bij loslaten.
  function color(id, label, value, o) {
    return field(id, label, `<input type="color" id="${id}" value="${value}"><span class="ui-unit"></span>`, o);
  }
  function onColor(id, fn, after) {
    const el = document.getElementById(id);
    if (el) el.addEventListener('change', (e) => { fn(e.target.value); after && after(); });
  }

  // Aan/uit-schakelaar.
  function toggle(id, label, checked, o) {
    return field(id, label,
      `<label class="ui-switch"><input type="checkbox" id="${id}"${checked ? ' checked' : ''}><span></span></label><span class="ui-unit"></span>`, o);
  }

  const section = (title, iconName, body) =>
    `<section class="ui-section"><h2>${iconName ? icon(iconName) : ''}${title}</h2>${body}</section>`;
  const info = (text) => `<div class="ui-info">${icon('info-circle')}<span>${text}</span></div>`;
  const warn = (text) => `<div class="ui-warn">${icon('exclamation-triangle')}<span>${text}</span></div>`;
  const grid = (...cols) => `<div class="ui-grid">${cols.map(c => `<div>${c}</div>`).join('')}</div>`;
  const button = (label, iconName, attrs, cls) =>
    `<button type="button" class="ui-btn${cls ? ' ' + cls : ''}" ${attrs || ''}>${iconName ? icon(iconName) : ''}<span>${label}</span></button>`;
  const actions = (...btns) => `<div class="ui-actions">${btns.join('')}</div>`;

  // Tabbladen. group = sleutel waaronder het actieve tabblad onthouden wordt
  // (bijv. 'woning', 'unit'); tabs = [{ key, label, icon, html }].
  const activeTabs = {};
  function tabs(group, list) {
    const active = list.some(t => t.key === activeTabs[group]) ? activeTabs[group] : list[0].key;
    return `<div class="ui-tabs" data-tab-group="${group}">
      <div class="ui-tab-bar">${list.map(t => `<button type="button" class="ui-tab${t.key === active ? ' active' : ''}" data-tab="${t.key}">${t.icon ? icon(t.icon) : ''}<span>${t.label}</span></button>`).join('')}</div>
      ${list.map(t => `<div class="ui-tab-page${t.key === active ? ' active' : ''}" data-tab-page="${t.key}">${t.html}</div>`).join('')}
    </div>`;
  }
  // Eenmalig per container: klik op een tab wisselt de pagina.
  function wireTabs(container) {
    if (container._uiTabsWired) return;
    container._uiTabsWired = true;
    container.addEventListener('click', (e) => {
      const btn = e.target.closest('.ui-tab');
      if (!btn) return;
      const wrap = btn.closest('.ui-tabs');
      activeTabs[wrap.dataset.tabGroup] = btn.dataset.tab;
      wrap.querySelectorAll('.ui-tab').forEach(b => b.classList.toggle('active', b === btn));
      wrap.querySelectorAll('.ui-tab-page').forEach(p => p.classList.toggle('active', p.dataset.tabPage === btn.dataset.tab));
    });
  }

  // Specificaties: kaart met regels [label, waarde, eenheid].
  function specCard(title, iconName, rows, total) {
    const row = ([label, value, unit]) =>
      `<div class="ui-spec-row"><span>${label}</span><span class="ui-spec-val">${value}${unit ? `<small>${unit}</small>` : ''}</span></div>`;
    return `<div class="ui-spec-card"><h2>${icon(iconName)}${title}</h2>${rows.map(row).join('')}${total ? `<div class="ui-spec-total">${row(total)}</div>` : ''}</div>`;
  }

  // Invoer koppelen: onNum/onSel/onToggle(root, id, fn, after).
  function onNum(id, fn, after, o) {
    const el = document.getElementById(id);
    if (!el) return;
    el.addEventListener('input', (e) => {
      const v = parseFloat(e.target.value);
      if (isFinite(v) && (!(o && o.positive) || v > 0)) { fn(v); after && after(); }
    });
  }
  function onSel(id, fn, after) {
    const el = document.getElementById(id);
    if (el) el.addEventListener('input', (e) => { fn(e.target.value); after && after(); });
  }
  function onToggle(id, fn, after) {
    const el = document.getElementById(id);
    if (el) el.addEventListener('change', (e) => { fn(e.target.checked); after && after(); });
  }

  // Weergave-cyclus 3D (sneltoets T): standaard -> 3D groot -> alleen de
  // render (ook het info-/specificatiedeel eronder weg) -> standaard.
  function cycle3D(el) {
    el.classList.remove('fullscreen-2d');
    if (!el.classList.contains('fullscreen-3d')) el.classList.add('fullscreen-3d');
    else if (!el.classList.contains('render-only')) el.classList.add('render-only');
    else el.classList.remove('fullscreen-3d', 'render-only');
  }
  function toggle2D(el) {
    el.classList.remove('fullscreen-3d', 'render-only');
    el.classList.toggle('fullscreen-2d');
  }

  return { esc, icon, hint, num, sel, toggle, color, onColor, section, info, warn, grid, button, actions, tabs, wireTabs, specCard, onNum, onSel, onToggle, cycle3D, toggle2D };
})();