class FieldResolverTest

class FieldResolverTest extends JsonapiKernelTestBase {
    public static $modules = [
        'entity_test',
        'jsonapi_test_field_aliasing',
        'jsonapi_test_field_filter_access',
        'serialization',
        'field',
        'text',
        'user',
    ];
    
    /**
     * The subject under test.
     *
     * @var \Drupal\jsonapi\Context\FieldResolver
     */
    protected $sut;
    
    /**
     * The JSON:API resource type repository.
     *
     * @var \Drupal\jsonapi\ResourceType\ResourceTypeRepositoryInterface
     */
    protected $resourceTypeRepository;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() {
        parent::setUp();
        $this->installEntitySchema('entity_test_with_bundle');
        $this->sut = \Drupal::service('jsonapi.field_resolver');
        $this->makeBundle('bundle1');
        $this->makeBundle('bundle2');
        $this->makeBundle('bundle3');
        $this->makeField('string', 'field_test1', 'entity_test_with_bundle', [
            'bundle1',
        ]);
        $this->makeField('string', 'field_test2', 'entity_test_with_bundle', [
            'bundle1',
        ]);
        $this->makeField('string', 'field_test3', 'entity_test_with_bundle', [
            'bundle2',
            'bundle3',
        ]);
        // Provides entity reference fields.
        $settings = [
            'target_type' => 'entity_test_with_bundle',
        ];
        $this->makeField('entity_reference', 'field_test_ref1', 'entity_test_with_bundle', [
            'bundle1',
        ], $settings, [
            'handler_settings' => [
                'target_bundles' => [
                    'bundle2',
                    'bundle3',
                ],
            ],
        ]);
        $this->makeField('entity_reference', 'field_test_ref2', 'entity_test_with_bundle', [
            'bundle1',
        ], $settings);
        $this->makeField('entity_reference', 'field_test_ref3', 'entity_test_with_bundle', [
            'bundle2',
            'bundle3',
        ], $settings);
        // Add a field with multiple properties.
        $this->makeField('text', 'field_test_text', 'entity_test_with_bundle', [
            'bundle1',
            'bundle2',
        ]);
        // Add two fields that have different internal names but have the same
        // public name.
        $this->makeField('entity_reference', 'field_test_alias_a', 'entity_test_with_bundle', [
            'bundle2',
        ], $settings);
        $this->makeField('entity_reference', 'field_test_alias_b', 'entity_test_with_bundle', [
            'bundle3',
        ], $settings);
        $this->resourceTypeRepository = $this->container
            ->get('jsonapi.resource_type.repository');
    }
    
    /**
     * @covers ::resolveInternalEntityQueryPath
     * @dataProvider resolveInternalIncludePathProvider
     */
    public function testResolveInternalIncludePath($expect, $external_path, $entity_type_id = 'entity_test_with_bundle', $bundle = 'bundle1') {
        $path_parts = explode('.', $external_path);
        $resource_type = $this->resourceTypeRepository
            ->get($entity_type_id, $bundle);
        $this->assertEquals($expect, $this->sut
            ->resolveInternalIncludePath($resource_type, $path_parts));
    }
    
    /**
     * Provides test cases for resolveInternalEntityQueryPath.
     */
    public function resolveInternalIncludePathProvider() {
        return [
            'entity reference' => [
                [
                    [
                        'field_test_ref2',
                    ],
                ],
                'field_test_ref2',
            ],
            'entity reference with multi target bundles' => [
                [
                    [
                        'field_test_ref1',
                    ],
                ],
                'field_test_ref1',
            ],
            'entity reference then another entity reference' => [
                [
                    [
                        'field_test_ref1',
                        'field_test_ref3',
                    ],
                ],
                'field_test_ref1.field_test_ref3',
            ],
            'entity reference with multiple target bundles, each with different field, but the same public field name' => [
                [
                    [
                        'field_test_ref1',
                        'field_test_alias_a',
                    ],
                    [
                        'field_test_ref1',
                        'field_test_alias_b',
                    ],
                ],
                'field_test_ref1.field_test_alias',
            ],
        ];
    }
    
    /**
     * Expects an error when an invalid field is provided for include.
     *
     * @param string $entity_type
     *   The entity type for which to test field resolution.
     * @param string $bundle
     *   The entity bundle for which to test field resolution.
     * @param string $external_path
     *   The external field path to resolve.
     * @param string $expected_message
     *   (optional) An expected exception message.
     *
     * @covers ::resolveInternalIncludePath
     * @dataProvider resolveInternalIncludePathErrorProvider
     */
    public function testResolveInternalIncludePathError($entity_type, $bundle, $external_path, $expected_message = '') {
        $path_parts = explode('.', $external_path);
        $this->expectException(CacheableBadRequestHttpException::class);
        if (!empty($expected_message)) {
            $this->expectExceptionMessage($expected_message);
        }
        $resource_type = $this->resourceTypeRepository
            ->get($entity_type, $bundle);
        $this->sut
            ->resolveInternalIncludePath($resource_type, $path_parts);
    }
    
    /**
     * Provides test cases for ::testResolveInternalIncludePathError.
     */
    public function resolveInternalIncludePathErrorProvider() {
        return [
            // Should fail because none of these bundles have these fields.
[
                'entity_test_with_bundle',
                'bundle1',
                'host.fail!!.deep',
            ],
            [
                'entity_test_with_bundle',
                'bundle2',
                'field_test_ref2',
            ],
            [
                'entity_test_with_bundle',
                'bundle1',
                'field_test_ref3',
            ],
            // Should fail because the nested fields don't exist on the targeted
            // resource types.
[
                'entity_test_with_bundle',
                'bundle1',
                'field_test_ref1.field_test1',
            ],
            [
                'entity_test_with_bundle',
                'bundle1',
                'field_test_ref1.field_test2',
            ],
            [
                'entity_test_with_bundle',
                'bundle1',
                'field_test_ref1.field_test_ref1',
            ],
            [
                'entity_test_with_bundle',
                'bundle1',
                'field_test_ref1.field_test_ref2',
            ],
            // Should fail because the nested fields is not a valid relationship
            // field name.
[
                'entity_test_with_bundle',
                'bundle1',
                'field_test1',
                '`field_test1` is not a valid relationship field name.',
            ],
            // Should fail because the nested fields is not a valid include path.
[
                'entity_test_with_bundle',
                'bundle1',
                'field_test_ref1.field_test3',
                '`field_test_ref1.field_test3` is not a valid include path.',
            ],
        ];
    }
    
    /**
     * @covers ::resolveInternalEntityQueryPath
     * @dataProvider resolveInternalEntityQueryPathProvider
     */
    public function testResolveInternalEntityQueryPath($expect, $external_path, $entity_type_id = 'entity_test_with_bundle', $bundle = 'bundle1') {
        $resource_type = $this->resourceTypeRepository
            ->get($entity_type_id, $bundle);
        $this->assertEquals($expect, $this->sut
            ->resolveInternalEntityQueryPath($resource_type, $external_path));
    }
    
    /**
     * Provides test cases for ::testResolveInternalEntityQueryPath.
     */
    public function resolveInternalEntityQueryPathProvider() {
        return [
            'config entity as base' => [
                'uuid',
                'id',
                'entity_test_bundle',
                'entity_test_bundle',
            ],
            'config entity as target' => [
                'type.entity:entity_test_bundle.uuid',
                'type.id',
            ],
            'primitive field; variation A' => [
                'field_test1',
                'field_test1',
            ],
            'primitive field; variation B' => [
                'field_test2',
                'field_test2',
            ],
            'entity reference then a primitive field; variation A' => [
                'field_test_ref2.entity:entity_test_with_bundle.field_test1',
                'field_test_ref2.field_test1',
            ],
            'entity reference then a primitive field; variation B' => [
                'field_test_ref2.entity:entity_test_with_bundle.field_test2',
                'field_test_ref2.field_test2',
            ],
            'entity reference then a complex field with property specifier `value`' => [
                'field_test_ref2.entity:entity_test_with_bundle.field_test_text.value',
                'field_test_ref2.field_test_text.value',
            ],
            'entity reference then a complex field with property specifier `format`' => [
                'field_test_ref2.entity:entity_test_with_bundle.field_test_text.format',
                'field_test_ref2.field_test_text.format',
            ],
            'entity reference then no delta with property specifier `id`' => [
                'field_test_ref1.entity:entity_test_with_bundle.uuid',
                'field_test_ref1.id',
            ],
            'entity reference then delta 0 with property specifier `id`' => [
                'field_test_ref1.0.entity:entity_test_with_bundle.uuid',
                'field_test_ref1.0.id',
            ],
            'entity reference then delta 1 with property specifier `id`' => [
                'field_test_ref1.1.entity:entity_test_with_bundle.uuid',
                'field_test_ref1.1.id',
            ],
            'entity reference then no reference property and a complex field with property specifier `value`' => [
                'field_test_ref1.entity:entity_test_with_bundle.field_test_text.value',
                'field_test_ref1.field_test_text.value',
            ],
            'entity reference then a reference property and a complex field with property specifier `value`' => [
                'field_test_ref1.entity.field_test_text.value',
                'field_test_ref1.entity.field_test_text.value',
            ],
            'entity reference then no reference property and a complex field with property specifier `format`' => [
                'field_test_ref1.entity:entity_test_with_bundle.field_test_text.format',
                'field_test_ref1.field_test_text.format',
            ],
            'entity reference then a reference property and a complex field with property specifier `format`' => [
                'field_test_ref1.entity.field_test_text.format',
                'field_test_ref1.entity.field_test_text.format',
            ],
            'entity reference then property specifier `entity:entity_test_with_bundle` then a complex field with property specifier `value`' => [
                'field_test_ref1.entity:entity_test_with_bundle.field_test_text.value',
                'field_test_ref1.entity:entity_test_with_bundle.field_test_text.value',
            ],
            'entity reference with a delta and no reference property then a complex field and property specifier `value`' => [
                'field_test_ref1.0.entity:entity_test_with_bundle.field_test_text.value',
                'field_test_ref1.0.field_test_text.value',
            ],
            'entity reference with a delta and a reference property then a complex field and property specifier `value`' => [
                'field_test_ref1.0.entity.field_test_text.value',
                'field_test_ref1.0.entity.field_test_text.value',
            ],
            'entity reference with no reference property then another entity reference with no reference property a complex field with property specifier `value`' => [
                'field_test_ref1.entity:entity_test_with_bundle.field_test_ref3.entity:entity_test_with_bundle.field_test_text.value',
                'field_test_ref1.field_test_ref3.field_test_text.value',
            ],
            'entity reference with a reference property then another entity reference with no reference property a complex field with property specifier `value`' => [
                'field_test_ref1.entity.field_test_ref3.entity:entity_test_with_bundle.field_test_text.value',
                'field_test_ref1.entity.field_test_ref3.field_test_text.value',
            ],
            'entity reference with no reference property then another entity reference with a reference property a complex field with property specifier `value`' => [
                'field_test_ref1.entity:entity_test_with_bundle.field_test_ref3.entity.field_test_text.value',
                'field_test_ref1.field_test_ref3.entity.field_test_text.value',
            ],
            'entity reference with a reference property then another entity reference with a reference property a complex field with property specifier `value`' => [
                'field_test_ref1.entity.field_test_ref3.entity.field_test_text.value',
                'field_test_ref1.entity.field_test_ref3.entity.field_test_text.value',
            ],
            'entity reference with target bundles then property specifier `entity:entity_test_with_bundle` then a primitive field on multiple bundles' => [
                'field_test_ref1.entity:entity_test_with_bundle.field_test3',
                'field_test_ref1.entity:entity_test_with_bundle.field_test3',
            ],
            'entity reference without target bundles then property specifier `entity:entity_test_with_bundle` then a primitive field on a single bundle' => [
                'field_test_ref2.entity:entity_test_with_bundle.field_test1',
                'field_test_ref2.entity:entity_test_with_bundle.field_test1',
            ],
            'entity reference without target bundles then property specifier `entity:entity_test_with_bundle` then a primitive field on multiple bundles' => [
                'field_test_ref3.entity:entity_test_with_bundle.field_test3',
                'field_test_ref3.entity:entity_test_with_bundle.field_test3',
                'entity_test_with_bundle',
                'bundle2',
            ],
            'entity reference without target bundles then property specifier `entity:entity_test_with_bundle` then a primitive field on a single bundle starting from a different resource type' => [
                'field_test_ref3.entity:entity_test_with_bundle.field_test2',
                'field_test_ref3.entity:entity_test_with_bundle.field_test2',
                'entity_test_with_bundle',
                'bundle3',
            ],
            'entity reference then property specifier `entity:entity_test_with_bundle` then another entity reference before a primitive field' => [
                'field_test_ref1.entity:entity_test_with_bundle.field_test_ref3.entity:entity_test_with_bundle.field_test2',
                'field_test_ref1.entity:entity_test_with_bundle.field_test_ref3.field_test2',
            ],
        ];
    }
    
    /**
     * Expects an error when an invalid field is provided for filter and sort.
     *
     * @param string $entity_type
     *   The entity type for which to test field resolution.
     * @param string $bundle
     *   The entity bundle for which to test field resolution.
     * @param string $external_path
     *   The external field path to resolve.
     * @param string $expected_message
     *   (optional) An expected exception message.
     *
     * @covers ::resolveInternalEntityQueryPath
     * @dataProvider resolveInternalEntityQueryPathErrorProvider
     */
    public function testResolveInternalEntityQueryPathError($entity_type, $bundle, $external_path, $expected_message = '') {
        $this->expectException(CacheableBadRequestHttpException::class);
        if (!empty($expected_message)) {
            $this->expectExceptionMessage($expected_message);
        }
        $resource_type = $this->resourceTypeRepository
            ->get($entity_type, $bundle);
        $this->sut
            ->resolveInternalEntityQueryPath($resource_type, $external_path);
    }
    
    /**
     * Provides test cases for ::testResolveInternalEntityQueryPathError.
     */
    public function resolveInternalEntityQueryPathErrorProvider() {
        return [
            'nested fields' => [
                'entity_test_with_bundle',
                'bundle1',
                'none.of.these.exist',
            ],
            'field does not exist on bundle' => [
                'entity_test_with_bundle',
                'bundle2',
                'field_test_ref2',
            ],
            'field does not exist on different bundle' => [
                'entity_test_with_bundle',
                'bundle1',
                'field_test_ref3',
            ],
            'field does not exist on targeted bundle' => [
                'entity_test_with_bundle',
                'bundle1',
                'field_test_ref1.field_test1',
            ],
            'different field does not exist on same targeted bundle' => [
                'entity_test_with_bundle',
                'bundle1',
                'field_test_ref1.field_test2',
            ],
            'entity reference field does not exist on targeted bundle' => [
                'entity_test_with_bundle',
                'bundle1',
                'field_test_ref1.field_test_ref1',
            ],
            'different entity reference field does not exist on same targeted bundle' => [
                'entity_test_with_bundle',
                'bundle1',
                'field_test_ref1.field_test_ref2',
            ],
            'message correctly identifies missing field' => [
                'entity_test_with_bundle',
                'bundle1',
                'field_test_ref1.entity:entity_test_with_bundle.field_test1',
                'Invalid nested filtering. The field `field_test1`, given in the path `field_test_ref1.entity:entity_test_with_bundle.field_test1`, does not exist.',
            ],
            'message correctly identifies different missing field' => [
                'entity_test_with_bundle',
                'bundle1',
                'field_test_ref1.entity:entity_test_with_bundle.field_test2',
                'Invalid nested filtering. The field `field_test2`, given in the path `field_test_ref1.entity:entity_test_with_bundle.field_test2`, does not exist.',
            ],
            'message correctly identifies missing entity reference field' => [
                'entity_test_with_bundle',
                'bundle2',
                'field_test_ref1.entity:entity_test_with_bundle.field_test2',
                'Invalid nested filtering. The field `field_test_ref1`, given in the path `field_test_ref1.entity:entity_test_with_bundle.field_test2`, does not exist.',
            ],
            'entity reference then a complex field with no property specifier' => [
                'entity_test_with_bundle',
                'bundle1',
                'field_test_ref2.field_test_text',
                'Invalid nested filtering. The field `field_test_text`, given in the path `field_test_ref2.field_test_text` is incomplete, it must end with one of the following specifiers: `value`, `format`, `processed`.',
            ],
            'entity reference then no delta with property specifier `target_id`' => [
                'entity_test_with_bundle',
                'bundle1',
                'field_test_ref1.target_id',
                'Invalid nested filtering. The property `target_id`, given in the path `field_test_ref1.target_id`, does not exist. Filter by `field_test_ref1`, not `field_test_ref1.target_id` (the JSON:API module elides property names from single-property fields).',
            ],
            'entity reference then delta 0 with property specifier `target_id`' => [
                'entity_test_with_bundle',
                'bundle1',
                'field_test_ref1.0.target_id',
                'Invalid nested filtering. The property `target_id`, given in the path `field_test_ref1.0.target_id`, does not exist. Filter by `field_test_ref1.0`, not `field_test_ref1.0.target_id` (the JSON:API module elides property names from single-property fields).',
            ],
            'entity reference then delta 1 with property specifier `target_id`' => [
                'entity_test_with_bundle',
                'bundle1',
                'field_test_ref1.1.target_id',
                'Invalid nested filtering. The property `target_id`, given in the path `field_test_ref1.1.target_id`, does not exist. Filter by `field_test_ref1.1`, not `field_test_ref1.1.target_id` (the JSON:API module elides property names from single-property fields).',
            ],
            'entity reference then no reference property then a complex field' => [
                'entity_test_with_bundle',
                'bundle1',
                'field_test_ref1.field_test_text',
                'Invalid nested filtering. The field `field_test_text`, given in the path `field_test_ref1.field_test_text` is incomplete, it must end with one of the following specifiers: `value`, `format`, `processed`.',
            ],
            'entity reference then reference property then a complex field' => [
                'entity_test_with_bundle',
                'bundle1',
                'field_test_ref1.entity.field_test_text',
                'Invalid nested filtering. The field `field_test_text`, given in the path `field_test_ref1.entity.field_test_text` is incomplete, it must end with one of the following specifiers: `value`, `format`, `processed`.',
            ],
            'entity reference then property specifier `entity:entity_test_with_bundle` then a complex field' => [
                'entity_test_with_bundle',
                'bundle1',
                'field_test_ref1.entity:entity_test_with_bundle.field_test_text',
                'Invalid nested filtering. The field `field_test_text`, given in the path `field_test_ref1.entity:entity_test_with_bundle.field_test_text` is incomplete, it must end with one of the following specifiers: `value`, `format`, `processed`.',
            ],
        ];
    }
    
    /**
     * Create a simple bundle.
     *
     * @param string $name
     *   The name of the bundle to create.
     */
    protected function makeBundle($name) {
        EntityTestBundle::create([
            'id' => $name,
        ])->save();
    }
    
    /**
     * Creates a field for a specified entity type/bundle.
     *
     * @param string $type
     *   The field type.
     * @param string $name
     *   The name of the field to create.
     * @param string $entity_type
     *   The entity type to which the field will be attached.
     * @param string[] $bundles
     *   The entity bundles to which the field will be attached.
     * @param array $storage_settings
     *   Custom storage settings for the field.
     * @param array $config_settings
     *   Custom configuration settings for the field.
     */
    protected function makeField($type, $name, $entity_type, array $bundles, array $storage_settings = [], array $config_settings = []) {
        $storage_config = [
            'field_name' => $name,
            'type' => $type,
            'entity_type' => $entity_type,
            'settings' => $storage_settings,
        ];
        FieldStorageConfig::create($storage_config)->save();
        foreach ($bundles as $bundle) {
            FieldConfig::create([
                'field_name' => $name,
                'entity_type' => $entity_type,
                'bundle' => $bundle,
                'settings' => $config_settings,
            ])->save();
        }
    }

}