Create custom URL that builds a cart and redirects to checkout (#765)

Author: ajello-meta

app/code/Meta/Sales/Controller/Checkout/Index.php

@@ -0,0 +1,262 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * 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.
+ */
+
+namespace Meta\Sales\Controller\Checkout;
+
+use Magento\Checkout\Model\Session as CheckoutSession;
+use Magento\Framework\App\Action\HttpGetActionInterface;
+use Magento\Framework\App\Request\Http;
+use Magento\Framework\Controller\Result\Redirect;
+use Magento\Framework\Controller\Result\RedirectFactory;
+use Magento\Framework\Exception\CouldNotSaveException;
+use Magento\Framework\Exception\LocalizedException;
+use Magento\Quote\Api\CartRepositoryInterface;
+use Magento\Quote\Api\Data\CartItemInterfaceFactory;
+use Magento\Quote\Model\GuestCart\GuestCartItemRepository;
+use Magento\Quote\Model\Quote\AddressFactory;
+use Magento\Quote\Model\Quote;
+use Magento\Quote\Model\QuoteFactory;
+use Magento\Quote\Model\QuoteIdMask;
+use Magento\Quote\Model\QuoteIdMaskFactory;
+use Meta\BusinessExtension\Model\Api\CustomApiKey\Authenticator;
+use Meta\BusinessExtension\Helper\FBEHelper;
+use Meta\Sales\Helper\OrderHelper;
+
+/**
+ * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
+ * @SuppressWarnings(PHPMD.ExcessiveParameterList)
+ * @SuppressWarnings(PHPMD.ExcessiveMethodLength)
+ */
+class Index implements HttpGetActionInterface
+{
+    /**
+     * @var Authenticator
+     */
+    private Authenticator $authenticator;
+
+    /**
+     * @var FBEHelper
+     */
+    private FBEHelper $fbeHelper;
+
+    /**
+     * @var OrderHelper
+     */
+    private OrderHelper $orderHelper;
+
+    /**
+     * @var QuoteFactory
+     */
+    private QuoteFactory $quoteFactory;
+
+    /**
+     * @var QuoteIdMaskFactory
+     */
+    private QuoteIdMaskFactory $quoteIdMaskFactory;
+
+    /**
+     * @var AddressFactory
+     */
+    private AddressFactory $quoteAddressFactory;
+
+    /**
+     * @var CartRepositoryInterface
+     */
+    private CartRepositoryInterface $quoteRepository;
+
+    /**
+     * @var GuestCartItemRepository
+     */
+    private GuestCartItemRepository $guestCartItemRepository;
+
+    /**
+     * @var CartItemInterfaceFactory
+     */
+    private CartItemInterfaceFactory $cartItemInterfaceFactory;
+
+    /**
+     * @var CheckoutSession
+     */
+    private CheckoutSession $checkoutSession;
+
+    /**
+     * @var Http
+     */
+    private Http $httpRequest;
+
+    /**
+     * @var RedirectFactory
+     */
+    private RedirectFactory $resultRedirectFactory;
+
+
+    /**
+     * @param QuoteFactory $quoteFactory
+     * @param QuoteIdMaskFactory $quoteIdMaskFactory
+     * @param AddressFactory $quoteAddressFactory
+     * @param CartRepositoryInterface $quoteRepository
+     * @param GuestCartItemRepository $guestCartItemRepository
+     * @param CartItemInterfaceFactory $cartItemInterfaceFactory
+     * @param CheckoutSession $checkoutSession
+     * @param Http $httpRequest
+     * @param RedirectFactory $resultRedirectFactory
+     * @param Authenticator $authenticator
+     * @param OrderHelper $orderHelper
+     * @param FBEHelper $fbeHelper
+     */
+    public function __construct(
+        QuoteFactory             $quoteFactory,
+        QuoteIdMaskFactory       $quoteIdMaskFactory,
+        AddressFactory           $quoteAddressFactory,
+        CartRepositoryInterface  $quoteRepository,
+        GuestCartitemRepository  $guestCartItemRepository,
+        CartItemInterfaceFactory $cartItemInterfaceFactory,
+        FBEHelper                $fbeHelper,
+        CheckoutSession          $checkoutSession,
+        Http                     $httpRequest,
+        RedirectFactory          $resultRedirectFactory,
+        Authenticator            $authenticator,
+        OrderHelper              $orderHelper
+    )
+    {
+        $this->quoteFactory = $quoteFactory;
+        $this->quoteIdMaskFactory = $quoteIdMaskFactory;
+        $this->quoteAddressFactory = $quoteAddressFactory;
+        $this->quoteRepository = $quoteRepository;
+        $this->guestCartItemRepository = $guestCartItemRepository;
+        $this->cartItemInterfaceFactory = $cartItemInterfaceFactory;
+        $this->fbeHelper = $fbeHelper;
+        $this->checkoutSession = $checkoutSession;
+        $this->httpRequest = $httpRequest;
+        $this->resultRedirectFactory = $resultRedirectFactory;
+        $this->authenticator = $authenticator;
+        $this->orderHelper = $orderHelper;
+    }
+
+    /**
+     * Execute action based on httpRequest.
+     *
+     * IMPORTANT: Signatures must be URL-Encoded after being Base64 Encoded, or verification will fail.
+     *
+     * @return Redirect
+     * @throws LocalizedException
+     */
+    public function execute()
+    {
+        $externalBusinessId = $this->httpRequest->getParam('external_business_id');
+        $products = explode(',', $this->httpRequest->getParam('products'));
+        $signature = $this->httpRequest->getParam('signature');
+
+        $storeId = $this->orderHelper->getStoreIdByExternalBusinessId($externalBusinessId);
+
+        // Verify signature
+        $uri = $this->httpRequest->getRequestUri();
+        $query_string = parse_url($uri, PHP_URL_QUERY);
+        $params = [];
+        parse_str($query_string, $params);
+        unset($params['signature']);
+        $new_query_string = http_build_query($params);
+        $validation_uri = str_replace($query_string, $new_query_string, $uri);
+
+        if (!$this->authenticator->verifySignature(urldecode($validation_uri), $signature)) {
+            $e = new LocalizedException(__('RSA Signature Validation Failed'));
+            $this->fbeHelper->logExceptionImmediatelyToMeta(
+                $e,
+                [
+                    'store_id' => $storeId,
+                    'event' => 'meta_checkout_url',
+                    'event_type' => 'rsa_signature_validation_error',
+                    'extra_data' => [
+                        'request_uri' => $uri,
+                        'request_signature' => $signature
+                    ]
+                ]
+            );
+            throw $e;
+        }
+
+        // Create cart
+        /**
+         * @var QuoteIdMask $quoteIdMask
+         */
+        $quoteIdMask = $this->quoteIdMaskFactory->create();
+        /**
+         * @var Quote $quote
+         */
+        $quote = $this->quoteFactory->create();
+        $quote->setStoreId($storeId);
+        $quote->setBillingAddress($this->quoteAddressFactory->create());
+        $quote->setShippingAddress($this->quoteAddressFactory->create());
+        $quote->setCustomerIsGuest(1);
+
+        try {
+            $quote->getShippingAddress()->setCollectShippingRates(true);
+            $this->quoteRepository->save($quote);
+        } catch (\Exception $e) {
+            $this->fbeHelper->logExceptionImmediatelyToMeta(
+                $e,
+                [
+                    'store_id' => $storeId,
+                    'event' => 'meta_checkout_url',
+                    'event_type' => 'quote_save_exception'
+                ]
+            );
+            throw new CouldNotSaveException(__("The quote can't be created."));
+        }
+
+        $quoteIdMask->setQuoteId($quote->getId())->save();
+        $quoteIdMaskID = $quoteIdMask->getMaskedId();
+
+        // Add items to cart
+        foreach ($products as $product) {
+            try {
+                list($sku, $quantity) = explode(':', $product);
+                $quantity = (int)$quantity;
+
+                $cartItem = $this->cartItemInterfaceFactory->create();
+                $cartItem->setSku($sku);
+                $cartItem->setQty($quantity);
+                $cartItem->setQuoteId($quoteIdMaskID);
+
+                $this->guestCartItemRepository->save($cartItem);
+            } catch (\Exception $e) {
+                $this->fbeHelper->logExceptionImmediatelyToMeta(
+                    $e,
+                    [
+                        'store_id' => $storeId,
+                        'event' => 'meta_checkout_url',
+                        'event_type' => 'error_adding_item',
+                        'extra_data' => [
+                            'cart_id' => $quote->getId(),
+                            'sku' => $sku
+                        ]
+                    ]
+                );
+            }
+        }
+
+        // Redirect to checkout
+        $this->checkoutSession->replaceQuote($quote);
+        $resultRedirect = $this->resultRedirectFactory->create();
+        $resultRedirect->setPath('checkout/cart');
+
+        return $resultRedirect;
+    }
+}