class MediaRevisionTest

class MediaRevisionTest extends MediaFunctionalTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->createMediaType('test', [
            'id' => 'test',
            'label' => 'test',
        ]);
    }
    
    /**
     * Creates a media item.
     *
     * @param string $title
     *   Title of media item.
     *
     * @return \Drupal\media\Entity\Media
     *   A media item.
     */
    protected function createMedia(string $title) : Media {
        $media = Media::create([
            'bundle' => 'test',
            'name' => $title,
        ]);
        $media->save();
        return $media;
    }
    
    /**
     * Checks media revision operations.
     */
    public function testRevisions() {
        $assert = $this->assertSession();
        $media = $this->createMedia('Sample media');
        $originalRevisionId = $media->getRevisionId();
        // You can access the revision page when there is only 1 revision.
        $this->drupalGet($media->toUrl('revision'));
        $assert->statusCodeEquals(200);
        // Create some revisions.
        $revision_count = 3;
        for ($i = 0; $i < $revision_count; $i++) {
            $media->revision_log = $this->randomMachineName(32);
            $media = $this->createMediaRevision($media);
        }
        // Confirm that the last revision is the default revision.
        $this->assertTrue($media->isDefaultRevision(), 'Last revision is the default.');
        // Get the original revision for simple checks.
        $media = \Drupal::entityTypeManager()->getStorage('media')
            ->loadRevision($originalRevisionId);
        // Test permissions.
        $this->drupalLogin($this->nonAdminUser);
        
        /** @var \Drupal\user\RoleInterface $role */
        $role = Role::load(RoleInterface::AUTHENTICATED_ID);
        // Test 'view all media revisions' permission ('view media' permission is
        // needed as well).
        user_role_revoke_permissions($role->id(), [
            'view all media revisions',
        ]);
        $this->drupalGet($media->toUrl('revision'));
        $assert->statusCodeEquals(403);
        $this->grantPermissions($role, [
            'view any test media revisions',
        ]);
        $this->drupalGet($media->toUrl('revision'));
        $assert->statusCodeEquals(200);
        user_role_revoke_permissions($role->id(), [
            'view any test media revisions',
        ]);
        $this->grantPermissions($role, [
            'view all media revisions',
        ]);
        $this->drupalGet($media->toUrl('revision'));
        $assert->statusCodeEquals(200);
        // Confirm the revision page shows the correct title.
        $assert->pageTextContains($media->getName());
    }
    
    /**
     * Tests creating revisions of a File media item.
     */
    public function testFileMediaRevision() {
        $assert = $this->assertSession();
        $uri = 'temporary://foo.txt';
        file_put_contents($uri, $this->randomString(128));
        $this->createMediaType('file', [
            'id' => 'document',
            'new_revision' => TRUE,
        ]);
        // Create a media item.
        $this->drupalGet('/media/add/document');
        $page = $this->getSession()
            ->getPage();
        $page->fillField('Name', 'Foobar');
        $page->attachFileToField('File', $this->container
            ->get('file_system')
            ->realpath($uri));
        $page->pressButton('Save');
        $assert->addressEquals('admin/content/media');
        // The media item was just created, so it should only have one revision.
        $media = $this->container
            ->get('entity_type.manager')
            ->getStorage('media')
            ->load(1);
        $this->assertRevisionCount($media, 1);
        // If we edit the item, we should get a new revision.
        $this->drupalGet('/media/1/edit');
        $assert->checkboxChecked('Create new revision');
        $page = $this->getSession()
            ->getPage();
        $page->fillField('Name', 'Foo');
        $page->pressButton('Save');
        $this->assertRevisionCount($media, 2);
        // Confirm the correct revision title appears on "view revisions" page.
        $media = $this->container
            ->get('entity_type.manager')
            ->getStorage('media')
            ->loadUnchanged(1);
        $this->drupalGet("media/" . $media->id() . "/revisions/" . $media->getRevisionId() . "/view");
        $assert->pageTextContains('Foo');
    }
    
    /**
     * Tests creating revisions of an Image media item.
     */
    public function testImageMediaRevision() {
        $assert = $this->assertSession();
        $this->createMediaType('image', [
            'id' => 'image',
            'new_revision' => TRUE,
        ]);
        
        /** @var \Drupal\field\FieldConfigInterface $field */
        // Disable the alt text field, because this is not a JavaScript test and
        // the alt text field will therefore not appear without a full page refresh.
        $field = FieldConfig::load('media.image.field_media_image');
        $settings = $field->getSettings();
        $settings['alt_field'] = FALSE;
        $settings['alt_field_required'] = FALSE;
        $field->set('settings', $settings);
        $field->save();
        // Create a media item.
        $this->drupalGet('/media/add/image');
        $page = $this->getSession()
            ->getPage();
        $page->fillField('Name', 'Foobar');
        $page->attachFileToField('Image', $this->root . '/core/modules/media/tests/fixtures/example_1.jpeg');
        $page->pressButton('Save');
        $assert->addressEquals('admin/content/media');
        // The media item was just created, so it should only have one revision.
        $media = $this->container
            ->get('entity_type.manager')
            ->getStorage('media')
            ->load(1);
        $this->assertRevisionCount($media, 1);
        // If we edit the item, we should get a new revision.
        $this->drupalGet('/media/1/edit');
        $assert->checkboxChecked('Create new revision');
        $page = $this->getSession()
            ->getPage();
        $page->fillField('Name', 'Foo');
        $page->pressButton('Save');
        $this->assertRevisionCount($media, 2);
        // Confirm the correct revision title appears on "view revisions" page.
        $media = $this->container
            ->get('entity_type.manager')
            ->getStorage('media')
            ->loadUnchanged(1);
        $this->drupalGet("media/" . $media->id() . "/revisions/" . $media->getRevisionId() . "/view");
        $assert->pageTextContains('Foo');
    }
    
    /**
     * Creates a new revision for a given media item.
     *
     * @param \Drupal\media\MediaInterface $media
     *   A media object.
     *
     * @return \Drupal\media\MediaInterface
     *   A media object with up to date revision information.
     */
    protected function createMediaRevision(MediaInterface $media) {
        $media->setName($this->randomMachineName());
        $media->setNewRevision();
        $media->save();
        return $media;
    }
    
    /**
     * Asserts that an entity has a certain number of revisions.
     *
     * @param \Drupal\Core\Entity\EntityInterface $entity
     *   The entity in question.
     * @param int $expected_revisions
     *   The expected number of revisions.
     *
     * @internal
     */
    protected function assertRevisionCount(EntityInterface $entity, int $expected_revisions) : void {
        $entity_type = $entity->getEntityType();
        $count = $this->container
            ->get('entity_type.manager')
            ->getStorage($entity_type->id())
            ->getQuery()
            ->accessCheck(FALSE)
            ->count()
            ->allRevisions()
            ->condition($entity_type->getKey('id'), $entity->id())
            ->execute();
        $this->assertSame($expected_revisions, (int) $count);
    }
    
    /**
     * Creates a media with a revision.
     *
     * @param \Drupal\media\Entity\Media $media
     *   The media object.
     */
    private function createMediaWithRevision(Media $media) : void {
        $media->setNewRevision();
        $media->setName('1st changed title');
        $media->setRevisionLogMessage('first revision');
        // Set revision creation time to check the confirmation message while
        // deleting or reverting a revision.
        $media->setRevisionCreationTime((new \DateTimeImmutable('11 January 2009 4pm'))->getTimestamp());
        $media->save();
    }
    
    /**
     * Tests deleting a revision.
     */
    public function testRevisionDelete() : void {
        $user = $this->drupalCreateUser([
            'edit any test media',
            'view any test media revisions',
            'delete any test media revisions',
        ]);
        $this->drupalLogin($user);
        $media = $this->createMedia('Sample media');
        $this->createMediaWithRevision($media);
        $originalRevisionId = $media->getRevisionId();
        // Cannot delete latest revision.
        $this->drupalGet($media->toUrl('revision-delete-form'));
        $this->assertSession()
            ->statusCodeEquals(403);
        // Create a new revision.
        $media->setNewRevision();
        $media->setRevisionLogMessage('second revision')
            ->setRevisionCreationTime((new \DateTimeImmutable('12 March 2012 5pm'))->getTimestamp())
            ->setName('Sample media updated')
            ->save();
        $this->drupalGet($media->toUrl('version-history'));
        $this->assertSession()
            ->pageTextContains("First revision");
        $this->assertSession()
            ->pageTextContains("Second revision");
        $this->assertSession()
            ->elementsCount('css', 'table tbody tr', 3);
        // Reload the previous revision, and ensure we can delete it in the UI.
        $revision = \Drupal::entityTypeManager()->getStorage('media')
            ->loadRevision($originalRevisionId);
        $this->drupalGet($revision->toUrl('revision-delete-form'));
        $this->assertSession()
            ->pageTextContains('Are you sure you want to delete the revision from Sun, 01/11/2009 - 16:00?');
        $this->submitForm([], 'Delete');
        $this->assertSession()
            ->pageTextNotContains("First revision");
        $this->assertSession()
            ->pageTextContains("Second revision");
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->addressEquals(sprintf('media/%s/revisions', $media->id()));
        $this->assertSession()
            ->pageTextContains('Revision from Sun, 01/11/2009 - 16:00 of test 1st changed title has been deleted.');
        // Check that only two revisions exists, i.e. the original and the latest
        // revision.
        $this->assertSession()
            ->elementsCount('css', 'table tbody tr', 2);
    }
    
    /**
     * Tests reverting a revision.
     */
    public function testRevisionRevert() : void {
        
        /** @var \Drupal\user\UserInterface $user */
        $user = $this->drupalCreateUser([
            'edit any test media',
            'view any test media revisions',
            'revert any test media revisions',
        ]);
        $this->drupalLogin($user);
        $media = $this->createMedia('Initial title');
        $this->createMediaWithRevision($media);
        $originalRevisionId = $media->getRevisionId();
        $originalRevisionLabel = $media->getName();
        // Cannot revert latest revision.
        $this->drupalGet($media->toUrl('revision-revert-form'));
        $this->assertSession()
            ->statusCodeEquals(403);
        // Create a new revision.
        $media->setNewRevision();
        $media->setRevisionLogMessage('Second revision')
            ->setRevisionCreationTime((new \DateTimeImmutable('12 March 2012 5pm'))->getTimestamp())
            ->setName('Sample media updated')
            ->save();
        $this->drupalGet($media->toUrl('version-history'));
        $this->assertSession()
            ->pageTextContains("First revision");
        $this->assertSession()
            ->pageTextContains("Second revision");
        $this->assertSession()
            ->elementsCount('css', 'table tbody tr', 3);
        // Reload the previous revision, and ensure we can revert to it in the UI.
        $revision = \Drupal::entityTypeManager()->getStorage('media')
            ->loadRevision($originalRevisionId);
        $this->drupalGet($revision->toUrl('revision-revert-form'));
        $this->assertSession()
            ->pageTextContains('Are you sure you want to revert to the revision from Sun, 01/11/2009 - 16:00?');
        $this->submitForm([], 'Revert');
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->pageTextContains('Copy of the revision from Sun, 01/11/2009 - 16:00');
        $this->assertSession()
            ->addressEquals(sprintf('media/%s/revisions', $media->id()));
        $this->assertSession()
            ->pageTextContains(sprintf('test %s has been reverted to the revision from Sun, 01/11/2009 - 16:00.', $originalRevisionLabel));
        $this->assertSession()
            ->elementsCount('css', 'table tbody tr', 4);
        $this->drupalGet($media->toUrl('edit-form'));
        // Check if the title is changed to the reverted revision.
        $this->assertSession()
            ->pageTextContains('1st changed title');
    }

}