catalogo y carrito de compras

2026-06-30 14:57:45 -03:00
parent b960bd05d6
commit bc733c827d
5 changed files with 1965 additions and 0 deletions
@@ -0,0 +1,62 @@
+<?php
+include("db.php");
+
+if (!isset($_SESSION['id_usuario'])) {
+    header("Location: login.php?msj=debes_iniciar_sesion");
+    exit();
+}
+
+$accion = $_GET['accion'] ?? '';
+$id = $_GET['id'] ?? '';
+$id = intval($id);
+
+$origen = $_GET['origen'] ?? 'menu';
+$cat_retorno = $_GET['cat'] ?? 'Todos';
+
+switch ($accion) {
+    case 'agregar':
+        if ($id > 0) {
+            $sql_stock = "SELECT stock FROM productos WHERE id = ?";
+            $stmt = $conexion->prepare($sql_stock);
+            $stmt->bind_param("i", $id);
+            $stmt->execute();
+            $resultado = $stmt->get_result();
+            
+            if ($row = $resultado->fetch_assoc()) {
+                $stock_disponible = (int)$row['stock'];
+                
+                
+                $cantidad_futura = isset($_SESSION['carrito'][$id]) ? $_SESSION['carrito'][$id] + 1 : 1;
+                
+                if ($cantidad_futura <= $stock_disponible) {
+                    $_SESSION['carrito'][$id] = $cantidad_futura;
+                }
+            }
+        }
+        
+        if ($origen === 'carrito') {
+            header("Location: carrito.php");
+        } else {
+            header("Location: productos.php?cat=" . urlencode($cat_retorno) . "#prod-" . $id);
+        }
+        exit();
+
+    case 'quitar':
+        if (isset($_SESSION['carrito'][$id])) {
+            $_SESSION['carrito'][$id]--;
+            if ($_SESSION['carrito'][$id] <= 0) {
+                unset($_SESSION['carrito'][$id]);
+            }
+        }
+        header("Location: carrito.php");
+        exit();
+
+    case 'eliminar':
+        unset($_SESSION['carrito'][$id]);
+        header("Location: carrito.php");
+        exit();
+
+    default:
+        header("Location: productos.php");
+        exit();
+}