Add queries for directory information

app/code/Magento/DirectoryGraphQl/Model/Resolver/Countries.php

@@ -0,0 +1,63 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\DirectoryGraphQl\Model\Resolver;
+
+use Magento\Framework\GraphQl\Schema\Type\ResolveInfo;
+use Magento\Framework\GraphQl\Config\Element\Field;
+use Magento\Framework\GraphQl\Query\ResolverInterface;
+use Magento\Framework\Reflection\DataObjectProcessor;
+use Magento\Directory\Api\CountryInformationAcquirerInterface;
+use Magento\Directory\Api\Data\CountryInformationInterface;
+
+/**
+ * Countries field resolver, used for GraphQL request processing.
+ */
+class Countries implements ResolverInterface
+{
+    /**
+     * @var DataObjectProcessor
+     */
+    private $dataProcessor;
+
+    /**
+     * @var CountryInformationAcquirerInterface
+     */
+    private $countryInformationAcquirer;
+
+    /**
+     * @param DataObjectProcessor $dataProcessor
+     * @param CountryInformationAcquirerInterface $countryInformationAcquirer
+     */
+    public function __construct(
+        DataObjectProcessor $dataProcessor,
+        CountryInformationAcquirerInterface $countryInformationAcquirer
+    ) {
+        $this->dataProcessor = $dataProcessor;
+        $this->countryInformationAcquirer = $countryInformationAcquirer;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function resolve(
+        Field $field,
+        $context,
+        ResolveInfo $info,
+        array $value = null,
+        array $args = null
+    ) {
+        $countries = $this->countryInformationAcquirer->getCountriesInfo();
+
+        $output = [];
+        foreach ($countries as $country) {
+            $output[] = $this->dataProcessor->buildOutputDataArray($country, CountryInformationInterface::class);
+        }
+
+        return $output;
+    }
+}

app/code/Magento/DirectoryGraphQl/Model/Resolver/Country.php

@@ -0,0 +1,67 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\DirectoryGraphQl\Model\Resolver;
+
+use Magento\Framework\Exception\NoSuchEntityException;
+use Magento\Framework\GraphQl\Exception\GraphQlNoSuchEntityException;
+use Magento\Framework\GraphQl\Schema\Type\ResolveInfo;
+use Magento\Framework\GraphQl\Config\Element\Field;
+use Magento\Framework\GraphQl\Query\ResolverInterface;
+use Magento\Framework\Reflection\DataObjectProcessor;
+use Magento\Directory\Api\CountryInformationAcquirerInterface;
+use Magento\Directory\Api\Data\CountryInformationInterface;
+
+/**
+ * Country field resolver, used for GraphQL request processing.
+ */
+class Country implements ResolverInterface
+{
+    /**
+     * @var DataObjectProcessor
+     */
+    private $dataProcessor;
+
+    /**
+     * @var CountryInformationAcquirerInterface
+     */
+    private $countryInformationAcquirer;
+
+    /**
+     * @param DataObjectProcessor $dataProcessor
+     * @param CountryInformationAcquirerInterface $countryInformationAcquirer
+     */
+    public function __construct(
+        DataObjectProcessor $dataProcessor,
+        CountryInformationAcquirerInterface $countryInformationAcquirer
+    ) {
+        $this->dataProcessor = $dataProcessor;
+        $this->countryInformationAcquirer = $countryInformationAcquirer;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function resolve(
+        Field $field,
+        $context,
+        ResolveInfo $info,
+        array $value = null,
+        array $args = null
+    ) {
+        try {
+            $country = $this->countryInformationAcquirer->getCountryInfo($args['id']);
+        } catch (NoSuchEntityException $exception) {
+            throw new GraphQlNoSuchEntityException(__($exception->getMessage()), $exception);
+        }
+
+        return $this->dataProcessor->buildOutputDataArray(
+            $country,
+            CountryInformationInterface::class
+        );
+    }
+}

app/code/Magento/DirectoryGraphQl/Model/Resolver/Currency.php

@@ -0,0 +1,59 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\DirectoryGraphQl\Model\Resolver;
+
+use Magento\Framework\GraphQl\Schema\Type\ResolveInfo;
+use Magento\Framework\GraphQl\Config\Element\Field;
+use Magento\Framework\GraphQl\Query\ResolverInterface;
+use Magento\Framework\Reflection\DataObjectProcessor;
+use Magento\Directory\Api\CurrencyInformationAcquirerInterface;
+use Magento\Directory\Api\Data\CurrencyInformationInterface;
+
+/**
+ * Currency field resolver, used for GraphQL request processing.
+ */
+class Currency implements ResolverInterface
+{
+    /**
+     * @var DataObjectProcessor
+     */
+    private $dataProcessor;
+
+    /**
+     * @var CurrencyInformationAcquirerInterface
+     */
+    private $currencyInformationAcquirer;
+
+    /**
+     * @param DataObjectProcessor $dataProcessor
+     * @param CurrencyInformationAcquirerInterface $currencyInformationAcquirer
+     */
+    public function __construct(
+        DataObjectProcessor $dataProcessor,
+        CurrencyInformationAcquirerInterface $currencyInformationAcquirer
+    ) {
+        $this->dataProcessor = $dataProcessor;
+        $this->currencyInformationAcquirer = $currencyInformationAcquirer;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function resolve(
+        Field $field,
+        $context,
+        ResolveInfo $info,
+        array $value = null,
+        array $args = null
+    ) {
+        return $this->dataProcessor->buildOutputDataArray(
+            $this->currencyInformationAcquirer->getCurrencyInfo(),
+            CurrencyInformationInterface::class
+        );
+    }
+}

app/code/Magento/DirectoryGraphQl/README.md

@@ -0,0 +1,4 @@
+# DirectoryGraphQl
+
+**DirectoryGraphQl** provides type and resolver information for the GraphQl module
+to generate directory information endpoints.

app/code/Magento/DirectoryGraphQl/Test/Mftf/README.md

@@ -0,0 +1,3 @@
+# Directory Graph Ql Functional Tests
+
+The Functional Test Module for **Magento Directory Graph Ql** module.

app/code/Magento/DirectoryGraphQl/composer.json

@@ -0,0 +1,25 @@
+{
+  "name": "magento/module-directory-graph-ql",
+  "description": "N/A",
+  "type": "magento2-module",
+  "require": {
+    "php": "~7.1.3||~7.2.0",
+    "magento/module-directory": "*",
+    "magento/framework": "*"
+  },
+  "suggest": {
+    "magento/module-graph-ql": "*"
+  },
+  "license": [
+    "OSL-3.0",
+    "AFL-3.0"
+  ],
+  "autoload": {
+    "files": [
+      "registration.php"
+    ],
+    "psr-4": {
+      "Magento\\DirectoryGraphQl\\": ""
+    }
+  }
+}

app/code/Magento/DirectoryGraphQl/etc/module.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
+    <module name="Magento_DirectoryGraphQl"/>
+</config>

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

@@ -0,0 +1,37 @@
+# Copyright © Magento, Inc. All rights reserved.
+# See COPYING.txt for license details.
+
+type Query {
+    currency: Currency @resolver(class: "Magento\\DirectoryGraphQl\\Model\\Resolver\\Currency") @doc(description: "The currency query returns information about store currency.")
+    countries: [Country] @resolver(class: "Magento\\DirectoryGraphQl\\Model\\Resolver\\Countries") @doc(description: "The countries query provides information for all countries.")
+    country (id: String): Country @resolver(class: "Magento\\DirectoryGraphQl\\Model\\Resolver\\Country") @doc(description: "The countries query provides information for a single country.")
+}
+
+type Currency {
+    base_currency_code: String
+    base_currency_symbol: String
+    default_display_currecy_code: String
+    default_display_currecy_symbol: String
+    available_currency_codes: [String]
+    exchange_rates: [ExchangeRate]
+}
+
+type ExchangeRate {
+    currency_to: String
+    rate: Float
+}
+
+type Country {
+    id: String
+    two_letter_abbreviation: String
+    three_letter_abbreviation: String
+    full_name_locale: String
+    full_name_english: String
+    available_regions: [Region]
+}
+
+type Region {
+    id: Int
+    code: String
+    name: String
+}

app/code/Magento/DirectoryGraphQl/registration.php

@@ -0,0 +1,9 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+use Magento\Framework\Component\ComponentRegistrar;
+
+ComponentRegistrar::register(ComponentRegistrar::MODULE, 'Magento_DirectoryGraphQl', __DIR__);

composer.json

@@ -142,6 +142,7 @@
         "magento/module-developer": "*",
         "magento/module-dhl": "*",
         "magento/module-directory": "*",
+        "magento/module-directory-graph-ql": "*",
         "magento/module-downloadable": "*",
         "magento/module-downloadable-graph-ql": "*",
         "magento/module-downloadable-import-export": "*",

dev/tests/api-functional/testsuite/Magento/GraphQl/Directory/CountriesTest.php

@@ -0,0 +1,45 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\GraphQl\Directory;
+
+use Magento\TestFramework\TestCase\GraphQlAbstract;
+
+/**
+ * Test the GraphQL endpoint's Coutries query
+ */
+class CountriesTest extends GraphQlAbstract
+{
+    public function testGetCountries()
+    {
+        $query = <<<QUERY
+query {
+    countries {
+        id
+        two_letter_abbreviation
+        three_letter_abbreviation
+        full_name_locale
+        full_name_english
+        available_regions {
+            id
+            code
+            name
+        }
+    }
+}
+QUERY;
+
+        $result = $this->graphQlQuery($query);
+        $this->assertArrayHasKey('countries', $result);
+        $this->assertArrayHasKey('id', $result['countries'][0]);
+        $this->assertArrayHasKey('two_letter_abbreviation', $result['countries'][0]);
+        $this->assertArrayHasKey('three_letter_abbreviation', $result['countries'][0]);
+        $this->assertArrayHasKey('full_name_locale', $result['countries'][0]);
+        $this->assertArrayHasKey('full_name_english', $result['countries'][0]);
+        $this->assertArrayHasKey('available_regions', $result['countries'][0]);
+    }
+}