class InternalEntitiesTest

class InternalEntitiesTest extends BrowserTestBase {
    use EntityReferenceFieldCreationTrait;
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'jsonapi',
        'entity_test',
        'serialization',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * A test user.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $testUser;
    
    /**
     * An entity of an internal entity type.
     *
     * @var \Drupal\Core\Entity\EntityInterface
     */
    protected $internalEntity;
    
    /**
     * An entity referencing an internal entity.
     *
     * @var \Drupal\Core\Entity\EntityInterface
     */
    protected $referencingEntity;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->testUser = $this->drupalCreateUser([
            'view test entity',
            'administer entity_test_with_bundle content',
        ], $this->randomString(), TRUE);
        EntityTestBundle::create([
            'id' => 'internal_referencer',
            'label' => 'Entity Test Internal Referencer',
        ])->save();
        $this->createEntityReferenceField('entity_test_with_bundle', 'internal_referencer', 'field_internal', 'Internal Entities', 'entity_test_no_label');
        $this->internalEntity = EntityTestNoLabel::create([]);
        $this->internalEntity
            ->save();
        $this->referencingEntity = EntityTestWithBundle::create([
            'type' => 'internal_referencer',
            'field_internal' => $this->internalEntity
                ->id(),
        ]);
        $this->referencingEntity
            ->save();
        \Drupal::service('router.builder')->rebuild();
    }
    
    /**
     * Ensures that internal resources types aren't present in the entry point.
     */
    public function testEntryPoint() : void {
        $document = $this->jsonapiGet('/jsonapi');
        $this->assertArrayNotHasKey("{$this->internalEntity->getEntityTypeId()}--{$this->internalEntity->bundle()}", $document['links'], 'The entry point should not contain links to internal resource type routes.');
    }
    
    /**
     * Ensures that internal resources types aren't present in the routes.
     */
    public function testRoutes() : void {
        // This cannot be in a data provider because it needs values created by the
        // setUp method.
        $paths = [
            'individual' => "/jsonapi/entity_test_no_label/entity_test_no_label/{$this->internalEntity->uuid()}",
            'collection' => "/jsonapi/entity_test_no_label/entity_test_no_label",
            'related' => "/jsonapi/entity_test_no_label/entity_test_no_label/{$this->internalEntity->uuid()}/field_internal",
        ];
        $this->drupalLogin($this->testUser);
        foreach ($paths as $type => $path) {
            $this->drupalGet($path, [
                'Accept' => 'application/vnd.api+json',
            ]);
            $this->assertSame(404, $this->getSession()
                ->getStatusCode());
        }
    }
    
    /**
     * Asserts that internal entities are not included in compound documents.
     */
    public function testIncludes() : void {
        $document = $this->getIndividual($this->referencingEntity, [
            'query' => [
                'include' => 'field_internal',
            ],
        ]);
        $this->assertArrayNotHasKey('included', $document, 'Internal entities should not be included in compound documents.');
    }
    
    /**
     * Asserts that links to internal relationships aren't generated.
     */
    public function testLinks() : void {
        $document = $this->getIndividual($this->referencingEntity);
        $this->assertArrayNotHasKey('related', $document['data']['relationships']['field_internal']['links'], 'Links to internal-only related routes should not be in the document.');
    }
    
    /**
     * Returns the decoded JSON:API document for the for the given entity.
     *
     * @param \Drupal\Core\Entity\EntityInterface $entity
     *   The entity to request.
     * @param array $options
     *   URL options.
     *
     * @return array
     *   The decoded response document.
     */
    protected function getIndividual(EntityInterface $entity, array $options = []) {
        $entity_type_id = $entity->getEntityTypeId();
        $bundle = $entity->bundle();
        $path = "/jsonapi/{$entity_type_id}/{$bundle}/{$entity->uuid()}";
        return $this->jsonapiGet($path, $options);
    }
    
    /**
     * Performs an authenticated request and returns the decoded document.
     *
     * @param \Drupal\Core\Entity\EntityInterface $entity
     *   The entity to request.
     * @param string $relationship
     *   The field name of the relationship to request.
     * @param array $options
     *   URL options.
     *
     * @return array
     *   The decoded response document.
     */
    protected function getRelated(EntityInterface $entity, $relationship, array $options = []) {
        $entity_type_id = $entity->getEntityTypeId();
        $bundle = $entity->bundle();
        $path = "/jsonapi/{$entity_type_id}/{$bundle}/{$entity->uuid()}/{$relationship}";
        return $this->jsonapiGet($path, $options);
    }
    
    /**
     * Performs an authenticated request and returns the decoded document.
     */
    protected function jsonapiGet($path, array $options = []) {
        $this->drupalLogin($this->testUser);
        $response = $this->drupalGet($path, $options, [
            'Accept' => 'application/vnd.api+json',
        ]);
        return Json::decode($response);
    }

}