Update app.py

app.py

@@ -394,30 +394,38 @@ def catalog():
             function openQuantityModal(index) {
                 selectedProductIndex = index;
                 document.getElementById('quantityModal').style.display = 'block';
-                document.getElementById('quantityInput').value = 1;
+                document.getElementById('quantityInput').value = 1; // Сбрасываем значение на 1
             }
 
             function confirmAddToCart() {
-                if (selectedProductIndex === null) return;
-                
-                const quantity = parseInt(document.getElementById('quantityInput').value);
-                if (quantity < 1) return;
+                if (selectedProductIndex === null) {
+                    console.error("Товар не выбран!");
+                    return;
+                }
+
+                const quantityInput = document.getElementById('quantityInput').value;
+                const quantity = parseInt(quantityInput) || 0; // Если не число, то 0
                 
+                if (quantity <= 0) {
+                    alert("Пожалуйста, укажите количество больше 0");
+                    return;
+                }
+
                 let cart = JSON.parse(localStorage.getItem('cart') || '[]');
                 const product = products[selectedProductIndex];
                 const existingItem = cart.find(item => item.name === product.name);
-                
+
                 if (existingItem) {
                     existingItem.quantity += quantity;
                 } else {
                     cart.push({
                         name: product.name,
                         price: product.price,
-                        photo: product.photos?.[0] || '',
+                        photo: product.photos && product.photos.length > 0 ? product.photos[0] : '',
                         quantity: quantity
                     });
                 }
-                
+
                 localStorage.setItem('cart', JSON.stringify(cart));
                 closeModal('quantityModal');
                 updateCartButton();
@@ -433,7 +441,7 @@ def catalog():
                 const cart = JSON.parse(localStorage.getItem('cart') || '[]');
                 const cartContent = document.getElementById('cartContent');
                 let total = 0;
-                
+
                 if (cart.length === 0) {
                     cartContent.innerHTML = '<p>Корзина пуста</p>';
                 } else {
@@ -457,7 +465,7 @@ def catalog():
                         `;
                     }).join('');
                 }
-                
+
                 document.getElementById('cartTotal').textContent = total;
                 document.getElementById('cartModal').style.display = 'block';
             }