Brisa
62 lines
1.7 KiB
PHP
62 lines
1.7 KiB
PHP
<?php
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include("db.php");
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if (!isset($_SESSION['id_usuario'])) {
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header("Location: login.php?msj=debes_iniciar_sesion");
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exit();
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}
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$accion = $_GET['accion'] ?? '';
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$id = $_GET['id'] ?? '';
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$id = intval($id);
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$origen = $_GET['origen'] ?? 'menu';
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$cat_retorno = $_GET['cat'] ?? 'Todos';
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switch ($accion) {
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case 'agregar':
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if ($id > 0) {
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$sql_stock = "SELECT stock FROM productos WHERE id = ?";
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$stmt = $conexion->prepare($sql_stock);
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$stmt->bind_param("i", $id);
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$stmt->execute();
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$resultado = $stmt->get_result();
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if ($row = $resultado->fetch_assoc()) {
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$stock_disponible = (int)$row['stock'];
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$cantidad_futura = isset($_SESSION['carrito'][$id]) ? $_SESSION['carrito'][$id] + 1 : 1;
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if ($cantidad_futura <= $stock_disponible) {
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$_SESSION['carrito'][$id] = $cantidad_futura;
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}
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}
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}
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if ($origen === 'carrito') {
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header("Location: carrito.php");
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} else {
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header("Location: productos.php?cat=" . urlencode($cat_retorno) . "#prod-" . $id);
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}
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exit();
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case 'quitar':
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if (isset($_SESSION['carrito'][$id])) {
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$_SESSION['carrito'][$id]--;
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if ($_SESSION['carrito'][$id] <= 0) {
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unset($_SESSION['carrito'][$id]);
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}
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}
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header("Location: carrito.php");
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exit();
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case 'eliminar':
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unset($_SESSION['carrito'][$id]);
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header("Location: carrito.php");
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exit();
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default:
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header("Location: productos.php");
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exit();
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} |