// ===== Données exemple (contexte terrain / chantier) =====
let products = [
  { id: 1,  name: "Gants de manutention",           unit: "paire",  qty: 3 },
  { id: 2,  name: "Vis autoperceuse 4.8×38",          unit: "boîte",  qty: 2 },
  { id: 3,  name: "Marteau de coffreur 700g",         unit: "pièce",  qty: 1 },
  { id: 4,  name: "Chaussures de sécurité S3",        unit: "paire",  qty: 1 },
  { id: 5,  name: "Niveau à bulle 40 cm",             unit: "pièce",  qty: 1 },
  { id: 6,  name: "Ruban de mesure 5 m",              unit: "pièce",  qty: 2 },
  { id: 7,  name: "Bobine de fil de tension",         unit: "pièce",  qty: 1 },
  { id: 8,  name: "Serre-joints 80 cm",               unit: "pièce",  qty: 2 },
  { id: 9,  name: "Cutter lame 18 mm",                unit: "pièce",  qty: 3 },
  { id: 10, name: "Lunettes de protection",           unit: "pièce",  qty: 5 },
  { id: 11, name: "Coffret forets béton SDS",         unit: "boîte",  qty: 1 },
  { id: 12, name: "Gilet haute visibilité Classe 2",  unit: "pièce",  qty: 4 },
];

let activeId = null;
const listEl = document.getElementById('product-list');
const headerCountEl = document.getElementById('header-count');
const totalQtyEl = document.getElementById('total-qty');

// ===== Rendu initial =====
function init() {
  renderList();
  updateSummary();
  lucide.createIcons();
}

function renderList() {
  listEl.innerHTML = products.map(p => `
    <div class="product-row" data-id="${p.id}">
      <div class="row-main">
        <div class="product-meta">
          <div class="product-name">${escapeHtml(p.name)}</div>
          <div class="product-unit">${escapeHtml(p.unit)}</div>
        </div>
        <span class="qty-badge" data-qty-id="${p.id}">${p.qty}</span>
      </div>
      <div class="row-actions">
        <button class="btn-action btn-minus" data-action="minus" aria-label="Diminuer la quantité">
          <i data-lucide="minus" class="w-5 h-5"></i>
        </button>
        <button class="btn-action btn-plus" data-action="plus" aria-label="Augmenter la quantité">
          <i data-lucide="plus" class="w-5 h-5"></i>
        </button>
        <button class="btn-action btn-delete" data-action="delete" aria-label="Supprimer le produit">
          <i data-lucide="trash-2" class="w-5 h-5"></i>
        </button>
      </div>
    </div>
  `).join('');
  lucide.createIcons();
}

function escapeHtml(str) {
  const div = document.createElement('div');
  div.textContent = str;
  return div.innerHTML;
}

// ===== Mise à jour du résumé =====
function updateSummary() {
  const total = products.reduce((sum, p) => sum + p.qty, 0);
  const count = products.length;
  headerCountEl.textContent = `${count} article${count > 1 ? 's' : ''}`;
  totalQtyEl.textContent = total;
}

// ===== Gestion du focus / activation =====
function setActiveId(id) {
  // Désactiver l’ancien
  if (activeId !== null) {
    const oldRow = document.querySelector(`.product-row[data-id="${activeId}"]`);
    if (oldRow) oldRow.classList.remove('active');
  }

  activeId = id;

  // Activer le nouveau
  if (activeId !== null) {
    const newRow = document.querySelector(`.product-row[data-id="${activeId}"]`);
    if (newRow) newRow.classList.add('active');
  }
}

// ===== Actions quantité / suppression =====
function updateQty(id, delta) {
  const product = products.find(p => p.id === id);
  if (!product) return;

  const newQty = product.qty + delta;
  if (newQty < 1) return; // empêche de descendre sous 1 (utiliser la poubelle)

  product.qty = newQty;

  // Mise à jour DOM ciblée (pas de re-render complet pour garder l’état visuel)
  const badge = document.querySelector(`.qty-badge[data-qty-id="${id}"]`);
  if (badge) badge.textContent = product.qty;
  updateSummary();
}

function deleteProduct(id) {
  const row = document.querySelector(`.product-row[data-id="${id}"]`);
  if (row) {
    // Animation rapide de sortie
    row.style.transition = "opacity 0.2s ease, transform 0.2s ease, max-height 0.25s ease";
    row.style.opacity = "0";
    row.style.transform = "translateX(-1rem)";
    row.style.maxHeight = row.offsetHeight + "px";
    requestAnimationFrame(() => {
      row.style.maxHeight = "0px";
      row.style.padding = "0px";
      row.style.margin = "0px";
      row.style.overflow = "hidden";
    });
  }

  setTimeout(() => {
    products = products.filter(p => p.id !== id);
    if (activeId === id) activeId = null;
    renderList();
    updateSummary();
    // Ré-applique l’état actif si un autre était déjà sélectionné (théoriquement impossible ici car 1 seul actif)
    if (activeId !== null) {
      const remain = document.querySelector(`.product-row[data-id="${activeId}"]`);
      if (remain) remain.classList.add('active');
    }
  }, 220);
}

// ===== Écouteurs d’événements =====

// Clics sur les lignes et boutons (délégation)
listEl.addEventListener('click', (e) => {
  const btn = e.target.closest('[data-action]');

  // 1. Bouton d’action (+, –, poubelle)
  if (btn) {
    e.stopPropagation();
    const row = btn.closest('.product-row');
    const id = parseInt(row.dataset.id, 10);
    const action = btn.dataset.action;

    if (action === 'plus') updateQty(id, 1);
    else if (action === 'minus') updateQty(id, -1);
    else if (action === 'delete') deleteProduct(id);
    return;
  }

  // 2. Ligne produit (hors bouton)
  const row = e.target.closest('.product-row');
  if (row) {
    const id = parseInt(row.dataset.id, 10);
    // Si on tape la ligne déjà active → on la referme
    // Sinon on active la nouvelle
    setActiveId(activeId === id ? null : id);
  }
});

// Clic en dehors des lignes (zone vide, header, footer…) → désactive tout
document.getElementById('app').addEventListener('click', (e) => {
  const row = e.target.closest('.product-row');
  const btn = e.target.closest('[data-action]');
  if (!row && !btn) {
    setActiveId(null);
  }
});

// Démarrage
init();