feat: Added WPP.cart.update function

src/cart/functions/update.ts

@@ -0,0 +1,44 @@
+/*!
+ * Copyright 2024 WPPConnect Team
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Update product in cart
+ *
+ * @example
+ * ```javascript
+ * const cart = WPP.cart.update('[number]@c.us', '6987301181294productId', { quantity: 12 });
+ * ```
+ *
+ * @category Cart
+ */
+
+import { WPPError } from '../../util';
+import { CartModel } from '../../whatsapp';
+import { add } from './add';
+
+export async function update(
+  chatId: string,
+  productId: string,
+  options: { quantity: number }
+): Promise<CartModel | undefined> {
+  if (!chatId || !productId || !options.quantity) {
+    throw new WPPError(
+      'send_required_params',
+      `For update item in cart send chatId, productId and options`
+    );
+  }
+  return add(chatId, [{ id: productId, qnt: options.quantity }]);
+}