class EntityAccessControlHandlerTest

class EntityAccessControlHandlerTest extends EntityLanguageTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->installEntitySchema('entity_test_no_uuid');
        $this->installEntitySchema('entity_test_rev');
        $this->installEntitySchema('entity_test_string_id');
    }
    
    /**
     * Asserts entity access correctly grants or denies access.
     *
     * @internal
     */
    public function assertEntityAccess(array $ops, AccessibleInterface $object, ?AccountInterface $account = NULL) : void {
        foreach ($ops as $op => $result) {
            $message = new FormattableMarkup("Entity access returns @result with operation '@op'.", [
                '@result' => !isset($result) ? 'null' : ($result ? 'true' : 'false'),
                '@op' => $op,
            ]);
            $this->assertEquals($object->access($op, $account), $result, (string) $message);
        }
    }
    
    /**
     * Ensures user labels are accessible for everyone.
     */
    public function testUserLabelAccess() : void {
        // Set up a non-admin user.
        \Drupal::currentUser()->setAccount($this->createUser([], NULL, FALSE, [
            'uid' => 2,
        ]));
        $anonymous_user = User::getAnonymousUser();
        $user = $this->createUser();
        // The current user is allowed to view the anonymous user label.
        $this->assertEntityAccess([
            'create' => FALSE,
            'update' => FALSE,
            'delete' => FALSE,
            'view' => FALSE,
            'view label' => TRUE,
        ], $anonymous_user);
        // The current user is allowed to view user labels.
        $this->assertEntityAccess([
            'create' => FALSE,
            'update' => FALSE,
            'delete' => FALSE,
            'view' => FALSE,
            'view label' => TRUE,
        ], $user);
        // Switch to an anonymous user account.
        $account_switcher = \Drupal::service('account_switcher');
        $account_switcher->switchTo(new AnonymousUserSession());
        // The anonymous user is allowed to view the anonymous user label.
        $this->assertEntityAccess([
            'create' => FALSE,
            'update' => FALSE,
            'delete' => FALSE,
            'view' => FALSE,
            'view label' => TRUE,
        ], $anonymous_user);
        // The anonymous user is allowed to view user labels.
        $this->assertEntityAccess([
            'create' => FALSE,
            'update' => FALSE,
            'delete' => FALSE,
            'view' => FALSE,
            'view label' => TRUE,
        ], $user);
        // Restore user account.
        $account_switcher->switchBack();
    }
    
    /**
     * Ensures entity access is properly working.
     */
    public function testEntityAccess() : void {
        // Set up a non-admin user that is allowed to view test entities.
        \Drupal::currentUser()->setAccount($this->createUser([
            'view test entity',
        ], NULL, FALSE, [
            'uid' => 2,
        ]));
        // Use the 'entity_test_label' entity type in order to test the 'view label'
        // access operation.
        $entity = EntityTestLabel::create([
            'name' => 'test',
        ]);
        // The current user is allowed to view entities.
        $this->assertEntityAccess([
            'create' => FALSE,
            'update' => FALSE,
            'delete' => FALSE,
            'view' => TRUE,
            'view label' => TRUE,
        ], $entity);
        // The custom user is not allowed to perform any operation on test entities,
        // except for viewing their label.
        $custom_user = $this->createUser();
        $this->assertEntityAccess([
            'create' => FALSE,
            'update' => FALSE,
            'delete' => FALSE,
            'view' => FALSE,
            'view label' => TRUE,
        ], $entity, $custom_user);
    }
    
    /**
     * Ensures default entity access is checked when necessary.
     *
     * This ensures that the default checkAccess() implementation of the
     * entity access control handler is considered if hook_entity_access() has not
     * explicitly forbidden access. Therefore the default checkAccess()
     * implementation can forbid access, even after access was already explicitly
     * allowed by hook_entity_access().
     *
     * @see \Drupal\entity_test\EntityTestAccessControlHandler::checkAccess()
     * @see entity_test_entity_access()
     */
    public function testDefaultEntityAccess() : void {
        // Set up a non-admin user that is allowed to view test entities.
        \Drupal::currentUser()->setAccount($this->createUser([
            'view test entity',
        ], NULL, FALSE, [
            'uid' => 2,
        ]));
        $entity = EntityTest::create([
            'name' => 'forbid_access',
        ]);
        // The user is denied access to the entity.
        $this->assertEntityAccess([
            'create' => FALSE,
            'update' => FALSE,
            'delete' => FALSE,
            'view' => FALSE,
        ], $entity);
    }
    
    /**
     * Ensures that the default handler is used as a fallback.
     */
    public function testEntityAccessDefaultController() : void {
        // The implementation requires that the global user id can be loaded.
        \Drupal::currentUser()->setAccount($this->createUser([], NULL, FALSE, [
            'uid' => 2,
        ]));
        // Check that the default access control handler is used for entities that don't
        // have a specific access control handler defined.
        $handler = $this->container
            ->get('entity_type.manager')
            ->getAccessControlHandler('entity_test_default_access');
        $this->assertInstanceOf(EntityAccessControlHandler::class, $handler);
        $entity = EntityTestDefaultAccess::create();
        $this->assertEntityAccess([
            'create' => FALSE,
            'update' => FALSE,
            'delete' => FALSE,
            'view' => FALSE,
        ], $entity);
    }
    
    /**
     * Ensures entity access for entity translations is properly working.
     */
    public function testEntityTranslationAccess() : void {
        // Set up a non-admin user that is allowed to view test entity translations.
        \Drupal::currentUser()->setAccount($this->createUser([
            'view test entity translations',
        ], NULL, FALSE, [
            'uid' => 2,
        ]));
        // Create two test languages.
        foreach ([
            'foo',
            'bar',
        ] as $langcode) {
            ConfigurableLanguage::create([
                'id' => $langcode,
                'label' => $this->randomString(),
            ])
                ->save();
        }
        $entity = EntityTest::create([
            'name' => 'test',
            'langcode' => 'foo',
        ]);
        $entity->save();
        $translation = $entity->addTranslation('bar');
        $this->assertEntityAccess([
            'view' => TRUE,
        ], $translation);
    }
    
    /**
     * Ensures the static access cache works correctly in the absence of a UUID.
     *
     * @see entity_test_entity_access()
     */
    public function testEntityWithoutUuidAccessCache() : void {
        $account = $this->createUser();
        $entity1 = EntityTestNoUuid::create([
            'name' => 'Accessible',
        ]);
        $entity1->save();
        $entity2 = EntityTestNoUuid::create([
            'name' => 'Inaccessible',
        ]);
        $entity2->save();
        $this->assertTrue($entity1->access('delete', $account), 'Entity 1 can be deleted.');
        $this->assertFalse($entity2->access('delete', $account), 'Entity 2 CANNOT be deleted.');
        $entity1->setName('Inaccessible')
            ->setNewRevision();
        $entity1->save();
        $this->assertFalse($entity1->access('delete', $account), 'Entity 1 revision 2 CANNOT be deleted.');
    }
    
    /**
     * Ensures the static access cache works correctly with a UUID and revisions.
     *
     * @see entity_test_entity_access()
     */
    public function testEntityWithUuidAccessCache() : void {
        $account = $this->createUser();
        $entity1 = EntityTestRev::create([
            'name' => 'Accessible',
        ]);
        $entity1->save();
        $entity2 = EntityTestRev::create([
            'name' => 'Inaccessible',
        ]);
        $entity2->save();
        $this->assertTrue($entity1->access('delete', $account), 'Entity 1 can be deleted.');
        $this->assertFalse($entity2->access('delete', $account), 'Entity 2 CANNOT be deleted.');
        $entity1->setName('Inaccessible')
            ->setNewRevision();
        $entity1->save();
        $this->assertFalse($entity1->access('delete', $account), 'Entity 1 revision 2 CANNOT be deleted.');
    }
    
    /**
     * Tests hook invocations.
     */
    public function testHooks() : void {
        $state = $this->container
            ->get('state');
        $entity = EntityTest::create([
            'name' => 'test',
        ]);
        // Test hook_entity_create_access() and hook_ENTITY_TYPE_create_access().
        $entity->access('create');
        $this->assertTrue($state->get('entity_test_entity_create_access'));
        $this->assertSame([
            'entity_type_id' => 'entity_test',
            'langcode' => LanguageInterface::LANGCODE_DEFAULT,
        ], $state->get('entity_test_entity_create_access_context'));
        $this->assertEquals(TRUE, $state->get('entity_test_entity_test_create_access'));
        // Test hook_entity_access() and hook_ENTITY_TYPE_access().
        $entity->access('view');
        $this->assertTrue($state->get('entity_test_entity_access'));
        $this->assertTrue($state->get('entity_test_entity_test_access'));
    }
    
    /**
     * Tests the default access handling for the ID and UUID fields.
     *
     * @covers ::fieldAccess
     * @dataProvider providerTestFieldAccess
     */
    public function testFieldAccess($entity_class, array $entity_create_values, $expected_id_create_access) : void {
        // Set up a non-admin user that is allowed to create and update test
        // entities.
        \Drupal::currentUser()->setAccount($this->createUser([
            'administer entity_test content',
        ], NULL, FALSE, [
            'uid' => 2,
        ]));
        // Create the entity to test field access with.
        $entity = $entity_class::create($entity_create_values);
        // On newly-created entities, field access must allow setting the UUID
        // field.
        $this->assertTrue($entity->get('uuid')
            ->access('edit'));
        $this->assertTrue($entity->get('uuid')
            ->access('edit', NULL, TRUE)
            ->isAllowed());
        // On newly-created entities, field access will not allow setting the ID
        // field if the ID is of type serial. It will allow access if it is of type
        // string.
        $this->assertEquals($expected_id_create_access, $entity->get('id')
            ->access('edit'));
        $this->assertEquals($expected_id_create_access, $entity->get('id')
            ->access('edit', NULL, TRUE)
            ->isAllowed());
        // Save the entity and check that we can not update the ID or UUID fields
        // anymore.
        $entity->save();
        // If the ID has been set as part of the create ensure it has been set
        // correctly.
        if (isset($entity_create_values['id'])) {
            $this->assertSame($entity_create_values['id'], $entity->id());
        }
        // The UUID is hard-coded by the data provider.
        $this->assertSame('60e3a179-79ed-4653-ad52-5e614c8e8fbe', $entity->uuid());
        $this->assertFalse($entity->get('uuid')
            ->access('edit'));
        $access_result = $entity->get('uuid')
            ->access('edit', NULL, TRUE);
        $this->assertTrue($access_result->isForbidden());
        $this->assertEquals('The entity UUID cannot be changed.', $access_result->getReason());
        // Ensure the ID is still not allowed to be edited.
        $this->assertFalse($entity->get('id')
            ->access('edit'));
        $access_result = $entity->get('id')
            ->access('edit', NULL, TRUE);
        $this->assertTrue($access_result->isForbidden());
        $this->assertEquals('The entity ID cannot be changed.', $access_result->getReason());
    }
    public static function providerTestFieldAccess() {
        return [
            'serial ID entity' => [
                EntityTest::class,
                [
                    'name' => 'A test entity',
                    'uuid' => '60e3a179-79ed-4653-ad52-5e614c8e8fbe',
                ],
                FALSE,
            ],
            'string ID entity' => [
                EntityTestStringId::class,
                [
                    'id' => 'a_test_entity',
                    'name' => 'A test entity',
                    'uuid' => '60e3a179-79ed-4653-ad52-5e614c8e8fbe',
                ],
                TRUE,
            ],
        ];
    }

}