From 75573a9e28cd3a893582572d08846b2d06437c47 Mon Sep 17 00:00:00 2001
From: Patrick McLain <pat@pmclain.com>
Date: Wed, 13 Feb 2019 23:19:41 -0500
Subject: [PATCH] [Cart Operations] Remove item mutation

Partial #37
---
 .../Resolver/RemoveItemFromCartOutput.php     |  73 ++++++
 .../Magento/QuoteGraphQl/etc/schema.graphqls  |  10 +
 .../GraphQl/Quote/RemoveItemFromCartTest.php  | 227 ++++++++++++++++++
 3 files changed, 310 insertions(+)
 create mode 100644 app/code/Magento/QuoteGraphQl/Model/Resolver/RemoveItemFromCartOutput.php
 create mode 100644 dev/tests/api-functional/testsuite/Magento/GraphQl/Quote/RemoveItemFromCartTest.php

diff --git a/app/code/Magento/QuoteGraphQl/Model/Resolver/RemoveItemFromCartOutput.php b/app/code/Magento/QuoteGraphQl/Model/Resolver/RemoveItemFromCartOutput.php
new file mode 100644
index 0000000000000..658f670fd6825
--- /dev/null
+++ b/app/code/Magento/QuoteGraphQl/Model/Resolver/RemoveItemFromCartOutput.php
@@ -0,0 +1,73 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\QuoteGraphQl\Model\Resolver;
+
+use Magento\Framework\Exception\NoSuchEntityException;
+use Magento\Framework\GraphQl\Config\Element\Field;
+use Magento\Framework\GraphQl\Exception\GraphQlInputException;
+use Magento\Framework\GraphQl\Exception\GraphQlNoSuchEntityException;
+use Magento\Framework\GraphQl\Query\ResolverInterface;
+use Magento\Framework\GraphQl\Schema\Type\ResolveInfo;
+use Magento\Quote\Api\GuestCartItemRepositoryInterface;
+use Magento\Quote\Api\GuestCartRepositoryInterface;
+use Magento\QuoteGraphQl\Model\Cart\ExtractDataFromCart;
+
+/**
+ * @inheritdoc
+ */
+class RemoveItemFromCartOutput implements ResolverInterface
+{
+    /**
+     * @var GuestCartItemRepositoryInterface
+     */
+    private $guestCartItemRepository;
+
+    /**
+     * @var GuestCartRepositoryInterface
+     */
+    private $guestCartRepository;
+
+    /**
+     * @var ExtractDataFromCart
+     */
+    private $extractDataFromCart;
+
+    public function __construct(
+        GuestCartItemRepositoryInterface $guestCartItemRepository,
+        GuestCartRepositoryInterface $guestCartRepository,
+        ExtractDataFromCart $extractDataFromCart
+    ) {
+        $this->guestCartItemRepository = $guestCartItemRepository;
+        $this->guestCartRepository = $guestCartRepository;
+        $this->extractDataFromCart = $extractDataFromCart;
+    }
+
+    public function resolve(Field $field, $context, ResolveInfo $info, array $value = null, array $args = null)
+    {
+        if (!isset($args['input']['cart_id'])) {
+            throw new GraphQlInputException(__('Required parameter "cart_id" is missing'));
+        }
+        if (!isset($args['input']['cart_item_id'])) {
+            throw new GraphQlInputException(__('Required parameter "cart_item_id" is missing'));
+        }
+        $maskedCartId = $args['input']['cart_id'];
+        $itemId = $args['input']['cart_item_id'];
+
+        try {
+            $this->guestCartItemRepository->deleteById($maskedCartId, $itemId);
+        } catch (NoSuchEntityException $e) {
+            throw new GraphQlNoSuchEntityException(__($e->getMessage()));
+        }
+
+        $cart = $this->guestCartRepository->get($maskedCartId);
+
+        $cartData = $this->extractDataFromCart->execute($cart);
+
+        return ['cart' => array_merge(['cart_id' => $maskedCartId], $cartData)];
+    }
+}
diff --git a/app/code/Magento/QuoteGraphQl/etc/schema.graphqls b/app/code/Magento/QuoteGraphQl/etc/schema.graphqls
index 2050a2d3ca790..b2e338bf4edf5 100644
--- a/app/code/Magento/QuoteGraphQl/etc/schema.graphqls
+++ b/app/code/Magento/QuoteGraphQl/etc/schema.graphqls
@@ -14,6 +14,7 @@ type Mutation {
     setShippingAddressesOnCart(input: SetShippingAddressesOnCartInput): SetShippingAddressesOnCartOutput @resolver(class: "\\Magento\\QuoteGraphQl\\Model\\Resolver\\SetShippingAddressesOnCart")
     setBillingAddressOnCart(input: SetBillingAddressOnCartInput): SetBillingAddressOnCartOutput @resolver(class: "\\Magento\\QuoteGraphQl\\Model\\Resolver\\SetBillingAddressOnCart")
     setShippingMethodsOnCart(input: SetShippingMethodsOnCartInput): SetShippingMethodsOnCartOutput @resolver(class: "\\Magento\\QuoteGraphQl\\Model\\Resolver\\SetShippingMethodsOnCart")
+    removeItemFromCart(input: RemoveItemFromCartInput): RemoveItemFromCartOutput @resolver(class: "Magento\\QuoteGraphQl\\Model\\Resolver\\RemoveItemFromCartOutput")
 }
 
 input AddSimpleProductsToCartInput {
@@ -206,6 +207,15 @@ type AddVirtualProductsToCartOutput {
     cart: Cart!
 }
 
+input RemoveItemFromCartInput {
+    cart_id: String!
+    cart_item_id: String!
+}
+
+type RemoveItemFromCartOutput {
+    cart: Cart!
+}
+
 type SimpleCartItem implements CartItemInterface @doc(description: "Simple Cart Item") {
     customizable_options: [SelectedCustomizableOption] @resolver(class: "Magento\\QuoteGraphQl\\Model\\Resolver\\CustomizableOptions")
 }
diff --git a/dev/tests/api-functional/testsuite/Magento/GraphQl/Quote/RemoveItemFromCartTest.php b/dev/tests/api-functional/testsuite/Magento/GraphQl/Quote/RemoveItemFromCartTest.php
new file mode 100644
index 0000000000000..9a949af5bc1e1
--- /dev/null
+++ b/dev/tests/api-functional/testsuite/Magento/GraphQl/Quote/RemoveItemFromCartTest.php
@@ -0,0 +1,227 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\GraphQl\Quote;
+
+use Magento\Catalog\Api\ProductRepositoryInterface;
+use Magento\Integration\Api\CustomerTokenServiceInterface;
+use Magento\Quote\Api\Data\CartInterface;
+use Magento\Quote\Api\GuestCartRepositoryInterface;
+use Magento\Quote\Model\Quote;
+use Magento\Quote\Model\QuoteIdToMaskedQuoteIdInterface;
+use Magento\Quote\Model\ResourceModel\Quote as QuoteResource;
+use Magento\TestFramework\Helper\Bootstrap;
+use Magento\TestFramework\TestCase\GraphQlAbstract;
+use Magento\TestFramework\ObjectManager;
+
+/**
+ * Test for empty cart creation mutation
+ */
+class RemoveItemFromCartTest extends GraphQlAbstract
+{
+    /**
+     * @var QuoteResource
+     */
+    private $quoteResource;
+
+    /**
+     * @var Quote
+     */
+    private $quote;
+
+    /**
+     * @var QuoteIdToMaskedQuoteIdInterface
+     */
+    private $quoteIdToMaskedId;
+
+    /**
+     * @var ProductRepositoryInterface
+     */
+    private $productRepository;
+
+    /**
+     * @var GuestCartRepositoryInterface
+     */
+    private $guestCartRepository;
+
+    protected function setUp()
+    {
+        $objectManager = Bootstrap::getObjectManager();
+        $this->quoteResource = $objectManager->create(QuoteResource::class);
+        $this->quote = $objectManager->create(Quote::class);
+        $this->quoteIdToMaskedId = $objectManager->create(QuoteIdToMaskedQuoteIdInterface::class);
+        $this->productRepository = $objectManager->create(ProductRepositoryInterface::class);
+        $this->guestCartRepository = $objectManager->create(GuestCartRepositoryInterface::class);
+    }
+
+    /**
+     * @magentoApiDataFixture Magento/Checkout/_files/quote_with_simple_product_saved.php
+     */
+    public function testGuestRemoveItemFromCart()
+    {
+        $this->quoteResource->load(
+            $this->quote,
+            'test_order_with_simple_product_without_address',
+            'reserved_order_id'
+        );
+        $maskedQuoteId = $this->quoteIdToMaskedId->execute((int)$this->quote->getId());
+        $itemId = $this->quote->getItemByProduct($this->productRepository->get('simple'))->getId();
+
+        $query = <<<QUERY
+mutation {
+  removeItemFromCart(
+    input: {
+      cart_id: "$maskedQuoteId"
+      cart_item_id: "$itemId"
+    }
+  ) {
+    cart {
+      cart_id
+      items {
+        id
+        qty
+      }
+    }
+  }
+}
+QUERY;
+        $response = $this->graphQlQuery($query);
+
+        $this->assertArrayHasKey('removeItemFromCart', $response);
+        $this->assertArrayHasKey('cart', $response['removeItemFromCart']);
+
+        $responseCart = $response['removeItemFromCart']['cart'];
+
+        $this->assertCount(0, $responseCart['items']);
+    }
+
+    /**
+     * @magentoApiDataFixture Magento/Checkout/_files/quote_with_simple_product_saved.php
+     * @magentoApiDataFixture Magento/Customer/_files/customer.php
+     */
+    public function testRemoveItemFromCart()
+    {
+        $this->quoteResource->load(
+            $this->quote,
+            'test_order_with_simple_product_without_address',
+            'reserved_order_id'
+        );
+        $maskedQuoteId = $this->quoteIdToMaskedId->execute((int)$this->quote->getId());
+        $itemId = $this->quote->getItemByProduct($this->productRepository->get('simple'))->getId();
+
+        $this->quote->setCustomerId(1);
+        $this->quoteResource->save($this->quote);
+
+        $headerMap = $this->getHeaderMap();
+
+        $query = <<<QUERY
+mutation {
+  removeItemFromCart(
+    input: {
+      cart_id: "$maskedQuoteId"
+      cart_item_id: "$itemId"
+    }
+  ) {
+    cart {
+      cart_id
+      items {
+        id
+        qty
+      }
+    }
+  }
+}
+QUERY;
+
+        $response = $this->graphQlQuery($query, [], '', $headerMap);
+
+        $this->assertArrayHasKey('removeItemFromCart', $response);
+        $this->assertArrayHasKey('cart', $response['removeItemFromCart']);
+
+        $responseCart = $response['removeItemFromCart']['cart'];
+
+        $this->assertCount(0, $responseCart['items']);
+    }
+
+    public function testRemoveItemFromCartNoSuchCartIdException()
+    {
+        $maskedCartId = 'nada';
+
+        $this->expectExceptionMessage('No such entity with cartId');
+
+        $query = <<<QUERY
+mutation {
+  removeItemFromCart(
+    input: {
+      cart_id: "$maskedCartId"
+      cart_item_id: "nononono"
+    }
+  ) {
+    cart {
+      cart_id
+      items {
+        id
+        qty
+      }
+    }
+  }
+}
+QUERY;
+        $this->graphQlQuery($query);
+    }
+
+    /**
+     * @magentoApiDataFixture Magento/Checkout/_files/quote_with_simple_product_saved.php
+     */
+    public function testRemoveItemFromCartNoSuchCartItem()
+    {
+        $this->quoteResource->load(
+            $this->quote,
+            'test_order_with_simple_product_without_address',
+            'reserved_order_id'
+        );
+        $maskedQuoteId = $this->quoteIdToMaskedId->execute((int)$this->quote->getId());
+        $itemId = 'nononono';
+
+        $this->expectExceptionMessage(sprintf('Cart doesn\'t contain the %s item.', $itemId));
+
+        $query = <<<QUERY
+mutation {
+  removeItemFromCart(
+    input: {
+      cart_id: "$maskedQuoteId"
+      cart_item_id: "$itemId"
+    }
+  ) {
+    cart {
+      cart_id
+      items {
+        id
+        qty
+      }
+    }
+  }
+}
+QUERY;
+        $this->graphQlQuery($query);
+    }
+
+    /**
+     * @param string $username
+     * @return array
+     */
+    private function getHeaderMap(string $username = 'customer@example.com'): array
+    {
+        $password = 'password';
+        /** @var CustomerTokenServiceInterface $customerTokenService */
+        $customerTokenService = ObjectManager::getInstance()
+            ->get(CustomerTokenServiceInterface::class);
+        $customerToken = $customerTokenService->createCustomerAccessToken($username, $password);
+        $headerMap = ['Authorization' => 'Bearer ' . $customerToken];
+        return $headerMap;
+    }
+}