graphQl-292: payment method list

Author: Vitaliy Boyko

app/code/Magento/QuoteGraphQl/Model/Cart/PaymentMethod/AvailablePaymentMethodsDataProvider.php

@@ -0,0 +1,53 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\QuoteGraphQl\Model\Cart\PaymentMethod;
+
+use Magento\Checkout\Api\PaymentInformationManagementInterface;
+use Magento\Quote\Api\Data\CartInterface;
+
+/**
+ * Get array of available payment methods.
+ */
+class AvailablePaymentMethodsDataProvider
+{
+    /**
+     * @var PaymentInformationManagementInterface
+     */
+    private $informationManagement;
+
+    /**
+     * AvailablePaymentMethodsDataProvider constructor.
+     * @param PaymentInformationManagementInterface $informationManagement
+     */
+    public function __construct(PaymentInformationManagementInterface $informationManagement)
+    {
+        $this->informationManagement = $informationManagement;
+    }
+
+    /**
+     * Collect and return information about available payment methods
+     *
+     * @param CartInterface $cart
+     * @return array
+     */
+    public function getPaymentMethods(CartInterface $cart): array
+    {
+        $paymentInformation = $this->informationManagement->getPaymentInformation($cart->getId());
+        $paymentMethods = $paymentInformation->getPaymentMethods();
+
+        $paymentMethodsNested = [];
+        foreach ($paymentMethods as $paymentMethod) {
+            $paymentMethodsNested[] = [
+                'title' => $paymentMethod->getTitle(),
+                'code' => $paymentMethod->getCode()
+            ];
+        }
+
+        return $paymentMethodsNested;
+    }
+}

app/code/Magento/QuoteGraphQl/Model/Resolver/AvailablePaymentMethodsResolver.php

@@ -0,0 +1,48 @@
+<?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\LocalizedException;
+use Magento\Framework\GraphQl\Config\Element\Field;
+use Magento\Framework\GraphQl\Query\ResolverInterface;
+use Magento\Framework\GraphQl\Schema\Type\ResolveInfo;
+use Magento\QuoteGraphQl\Model\Cart\PaymentMethod\AvailablePaymentMethodsDataProvider;
+
+/**
+ * Get list of active payment methods resolver.
+ */
+class AvailablePaymentMethodsResolver implements ResolverInterface
+{
+    /**
+     * @var AvailablePaymentMethodsDataProvider
+     */
+    private $addressDataProvider;
+
+    /**
+     * @param AvailablePaymentMethodsDataProvider $addressDataProvider
+     */
+    public function __construct(
+        AvailablePaymentMethodsDataProvider $addressDataProvider
+    ) {
+        $this->addressDataProvider = $addressDataProvider;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function resolve(Field $field, $context, ResolveInfo $info, array $value = null, array $args = null)
+    {
+        if (!isset($value['model'])) {
+            throw new LocalizedException(__('"model" value should be specified'));
+        }
+
+        $cart = $value['model'];
+
+        return $this->addressDataProvider->getPaymentMethods($cart);
+    }
+}

app/code/Magento/QuoteGraphQl/etc/schema.graphqls

@@ -98,6 +98,7 @@ type Cart {
     items: [CartItemInterface]
     applied_coupon: AppliedCoupon
     addresses: [CartAddress]! @resolver(class: "\\Magento\\QuoteGraphQl\\Model\\Resolver\\CartAddresses")
+    available_payment_methods : [CheckoutPaymentMethod]  @resolver(class: "Magento\\QuoteGraphQl\\Model\\Resolver\\AvailablePaymentMethodsResolver") @doc(description: "Available payment methods")
 }
 
 type CartAddress {
@@ -141,6 +142,11 @@ type CheckoutShippingMethod {
     # TODO: Add more complex structure for shipping rates
 }
 
+type CheckoutPaymentMethod @doc(description: "The type contains list of active payment methods") {
+    code : String @doc(description: "The payment method code")
+    title : String @doc(description: "The payment method title.")
+}
+
 enum AdressTypeEnum {
     SHIPPING
     BILLING