From 7674eb1713c7f348cd7fc8b8bc3c7643b49a3638 Mon Sep 17 00:00:00 2001
From: Artem Klimov <art.klimoff@gmail.com>
Date: Sat, 30 Jun 2018 17:46:48 +0300
Subject: [PATCH] 87 Fetch attribute values and labels for
 customAttributeMetadata

---
 .../Model/Resolver/AttributeOptions.php       | 88 +++++++++++++++++++
 .../Magento/EavGraphQl/etc/schema.graphqls    |  6 ++
 2 files changed, 94 insertions(+)
 create mode 100644 app/code/Magento/EavGraphQl/Model/Resolver/AttributeOptions.php

diff --git a/app/code/Magento/EavGraphQl/Model/Resolver/AttributeOptions.php b/app/code/Magento/EavGraphQl/Model/Resolver/AttributeOptions.php
new file mode 100644
index 0000000000000..1c341012083b9
--- /dev/null
+++ b/app/code/Magento/EavGraphQl/Model/Resolver/AttributeOptions.php
@@ -0,0 +1,88 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\EavGraphQl\Model\Resolver;
+
+use Magento\Eav\Api\AttributeOptionManagementInterface;
+use Magento\Framework\GraphQl\Config\Element\Field;
+use Magento\Framework\GraphQl\Query\Resolver\Value;
+use Magento\Framework\GraphQl\Query\Resolver\ValueFactory;
+use Magento\Framework\GraphQl\Query\ResolverInterface;
+use Magento\Framework\GraphQl\Schema\Type\ResolveInfo;
+
+/**
+ * Resolve attribute options data for custom attribute.
+ */
+class AttributeOptions implements ResolverInterface
+{
+    /**
+     * @var AttributeOptionManagementInterface
+     */
+    protected $optionManager;
+
+    /**
+     * @var ValueFactory
+     */
+    protected $valueFactory;
+
+    /**
+     * AttributeOptions constructor.
+     *
+     * @param AttributeOptionManagementInterface $optionManager
+     * @param ValueFactory $valueFactory
+     */
+    public function __construct(
+        AttributeOptionManagementInterface $optionManager,
+        ValueFactory $valueFactory
+    ) {
+        $this->optionManager = $optionManager;
+        $this->valueFactory = $valueFactory;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function resolve(
+        Field $field,
+        $context,
+        ResolveInfo $info,
+        array $value = null,
+        array $args = null
+    ) : Value {
+        $options = [];
+
+        $entityType = !empty($value['entity_type']) ? $value['entity_type'] : '';
+        $attributeCode = !empty($value['attribute_code']) ? $value['attribute_code'] : '';
+
+        try {
+            /** @var \Magento\Eav\Api\Data\AttributeOptionInterface[] $attributeOptions */
+            $attributeOptions = $this->optionManager->getItems($entityType, $attributeCode);
+        } catch (\Exception $e) {
+            $attributeOptions = [];
+        }
+
+        if (is_array($attributeOptions)) {
+            /** @var \Magento\Eav\Api\Data\AttributeOptionInterface $option */
+            foreach ($attributeOptions as $option) {
+                if (!$option->getValue()) {
+                    continue;
+                }
+
+                $options[] = [
+                    'label' => $option->getLabel(),
+                    'value' => $option->getValue()
+                ];
+            }
+        }
+
+        $result = function () use ($options) {
+            return $options;
+        };
+
+        return $this->valueFactory->create($result);
+    }
+}
diff --git a/app/code/Magento/EavGraphQl/etc/schema.graphqls b/app/code/Magento/EavGraphQl/etc/schema.graphqls
index 7799498c40409..adada3030f501 100644
--- a/app/code/Magento/EavGraphQl/etc/schema.graphqls
+++ b/app/code/Magento/EavGraphQl/etc/schema.graphqls
@@ -13,6 +13,12 @@ type Attribute @doc(description: "Attribute contains the attribute_type of the s
     attribute_code: String @doc(description: "The unique identifier for an attribute code. This value should be in lowercase letters without spaces.")
     entity_type: String @doc(description: "The type of entity that defines the attribute")
     attribute_type: String @doc(description: "The data type of the attribute")
+    attribute_options: [AttributeOption] @resolver(class: "Magento\\EavGraphQl\\Model\\Resolver\\AttributeOptions") @doc(description: "Attribute options list.")
+}
+
+type AttributeOption @doc(description: "Attribute option.") {
+    label: String @doc(description: "Attribute option label.")
+    value: String @doc(description: "Attribute option value.")
 }
 
 input AttributeInput @doc(description: "AttributeInput specifies the attribute_code and entity_type to search") {