Создано приложение POS с планшетным интерфейсом терминала продаж

myproject/pos/static/pos/js/terminal.js

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+// POS Terminal JavaScript
+
+const CATEGORIES = JSON.parse(document.getElementById('categoriesData').textContent);
+const PRODUCTS = JSON.parse(document.getElementById('productsData').textContent);
+
+let currentCategoryId = null;
+const cart = new Map(); // productId -> {id, name, price, qty}
+
+function formatMoney(v) {
+  return (Number(v)).toFixed(2);
+}
+
+function renderProducts() {
+  const grid = document.getElementById('productGrid');
+  grid.innerHTML = '';
+  const searchTerm = document.getElementById('searchInput').value.toLowerCase();
+  
+  let filtered = currentCategoryId
+    ? PRODUCTS.filter(p => (p.category_ids || []).includes(currentCategoryId))
+    : PRODUCTS;
+  
+  if (searchTerm) {
+    filtered = filtered.filter(p => p.name.toLowerCase().includes(searchTerm));
+  }
+
+  filtered.forEach(p => {
+    const col = document.createElement('div');
+    col.className = 'col-6 col-sm-4 col-md-3 col-lg-2';
+    
+    const card = document.createElement('div');
+    card.className = 'card product-card';
+    card.onclick = () => addToCart(p);
+    
+    const body = document.createElement('div');
+    body.className = 'card-body';
+    
+    const name = document.createElement('div');
+    name.className = 'product-name';
+    name.textContent = p.name;
+    
+    const stock = document.createElement('div');
+    stock.className = 'product-stock';
+    stock.textContent = 'В наличии';
+    
+    body.appendChild(name);
+    body.appendChild(stock);
+    card.appendChild(body);
+    col.appendChild(card);
+    grid.appendChild(col);
+  });
+}
+
+function addToCart(p) {
+  if (!cart.has(p.id)) {
+    cart.set(p.id, { id: p.id, name: p.name, price: Number(p.price), qty: 1 });
+  } else {
+    cart.get(p.id).qty += 1;
+  }
+  renderCart();
+}
+
+function updateQty(id, delta) {
+  if (!cart.has(id)) return;
+  const item = cart.get(id);
+  item.qty += delta;
+  if (item.qty <= 0) cart.delete(id);
+  renderCart();
+}
+
+function renderCart() {
+  const list = document.getElementById('cartList');
+  list.innerHTML = '';
+  let total = 0;
+  
+  if (cart.size === 0) {
+    list.innerHTML = '<p class="text-muted text-center py-4 small">Корзина пуста</p>';
+    document.getElementById('cartTotal').textContent = '0.00';
+    return;
+  }
+  
+  cart.forEach(item => {
+    const row = document.createElement('div');
+    row.className = 'mb-2 pb-2 border-bottom';
+    
+    const nameRow = document.createElement('div');
+    nameRow.className = 'd-flex justify-content-between align-items-start mb-1';
+    nameRow.innerHTML = `
+      <div class="fw-semibold small">${item.name}</div>
+      <button class="btn btn-sm btn-link text-danger p-0 ms-2" onclick="event.stopPropagation(); removeFromCart(${item.id});">
+        <i class="bi bi-x"></i>
+      </button>
+    `;
+    
+    const controlsRow = document.createElement('div');
+    controlsRow.className = 'd-flex justify-content-between align-items-center';
+    
+    const controls = document.createElement('div');
+    controls.className = 'btn-group btn-group-sm';
+    
+    const minus = document.createElement('button');
+    minus.className = 'btn btn-outline-secondary';
+    minus.innerHTML = '<i class="bi bi-dash"></i>';
+    minus.onclick = (e) => { e.stopPropagation(); updateQty(item.id, -1); };
+    
+    const qtySpan = document.createElement('button');
+    qtySpan.className = 'btn btn-outline-secondary disabled';
+    qtySpan.textContent = item.qty;
+    
+    const plus = document.createElement('button');
+    plus.className = 'btn btn-outline-secondary';
+    plus.innerHTML = '<i class="bi bi-plus"></i>';
+    plus.onclick = (e) => { e.stopPropagation(); updateQty(item.id, +1); };
+    
+    controls.appendChild(minus);
+    controls.appendChild(qtySpan);
+    controls.appendChild(plus);
+    
+    const priceDiv = document.createElement('div');
+    priceDiv.className = 'text-end small';
+    priceDiv.innerHTML = `<strong>${formatMoney(item.price * item.qty)}</strong>`;
+    
+    controlsRow.appendChild(controls);
+    controlsRow.appendChild(priceDiv);
+    
+    row.appendChild(nameRow);
+    row.appendChild(controlsRow);
+    list.appendChild(row);
+    
+    total += item.qty * item.price;
+  });
+  
+  document.getElementById('cartTotal').textContent = formatMoney(total);
+}
+
+function removeFromCart(id) {
+  cart.delete(id);
+  renderCart();
+}
+
+function clearCart() {
+  cart.clear();
+  renderCart();
+}
+
+document.getElementById('clearCart').onclick = clearCart;
+
+// Заглушки для функционала (будет реализовано позже)
+document.getElementById('checkoutNow').onclick = async () => {
+  alert('Функционал будет подключен позже: создание заказа и списание со склада.');
+};
+
+document.getElementById('scheduleLater').onclick = async () => {
+  alert('Функционал будет подключен позже: создание заказа на доставку/самовывоз.');
+};
+
+// Categories removed from this view - can be added as filter dropdown later if needed
+
+// Search functionality
+document.getElementById('searchInput').addEventListener('input', () => {
+  renderProducts();
+});
+
+// Customer selection
+document.getElementById('customerSelectBtn').addEventListener('click', () => {
+  alert('Функция выбора клиента будет реализована позже');
+});
+
+// Инициализация
+renderProducts();
+renderCart();