class FileImageDimensionsConstraintValidatorTest

class FileImageDimensionsConstraintValidatorTest extends FileValidatorTestBase {
    
    /**
     * An image file.
     *
     * @var \Drupal\file\FileInterface
     */
    protected FileInterface $image;
    
    /**
     * A file which is not an image.
     *
     * @var \Drupal\file\FileInterface
     */
    protected FileInterface $nonImage;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->image = File::create();
        $this->image
            ->setFileUri('core/misc/druplicon.png');
        
        /** @var \Drupal\Core\File\FileSystemInterface $file_system */
        $file_system = \Drupal::service('file_system');
        $this->image
            ->setFilename($file_system->basename($this->image
            ->getFileUri()));
        $this->nonImage = File::create();
        $this->nonImage
            ->setFileUri('core/assets/scaffold/README.txt');
        $this->nonImage
            ->setFilename($file_system->basename($this->nonImage
            ->getFileUri()));
    }
    
    /**
     * This ensures the dimensions of a specific file is within bounds.
     *
     * The image will be resized if it's too large.
     *
     * @covers ::validate
     */
    public function testFileValidateImageResolution() : void {
        // Non-images.
        $validators = [
            'FileImageDimensions' => [],
        ];
        $violations = $this->validator
            ->validate($this->nonImage, $validators);
        $this->assertCount(0, $violations, 'Should not get any errors for a non-image file.');
        $validators = [
            'FileImageDimensions' => [
                'maxDimensions' => '50x50',
                'minDimensions' => '100x100',
            ],
        ];
        $violations = $this->validator
            ->validate($this->nonImage, $validators);
        $this->assertCount(0, $violations, 'Do not check the dimensions on non files.');
        // Minimum size.
        $validators = [
            'FileImageDimensions' => [],
        ];
        $violations = $this->validator
            ->validate($this->image, $validators);
        $this->assertCount(0, $violations, 'No errors for an image when there is no minimum or maximum resolution.');
        $validators = [
            'FileImageDimensions' => [
                'maxDimensions' => 0,
                'minDimensions' => '200x1',
            ],
        ];
        $violations = $this->validator
            ->validate($this->image, $validators);
        $this->assertCount(1, $violations);
        $this->assertEquals('The image is too small. The minimum dimensions are 200x1 pixels and the image size is 88x100 pixels.', $violations->get(0)
            ->getMessage());
        $validators = [
            'FileImageDimensions' => [
                'maxDimensions' => 0,
                'minDimensions' => '1x200',
            ],
        ];
        $violations = $this->validator
            ->validate($this->image, $validators);
        $this->assertCount(1, $violations);
        $this->assertEquals('The image is too small. The minimum dimensions are 1x200 pixels and the image size is 88x100 pixels.', $violations->get(0)
            ->getMessage());
        $validators = [
            'FileImageDimensions' => [
                'maxDimensions' => 0,
                'minDimensions' => '200x200',
            ],
        ];
        $violations = $this->validator
            ->validate($this->image, $validators);
        $this->assertCount(1, $violations);
        $this->assertEquals('The image is too small. The minimum dimensions are 200x200 pixels and the image size is 88x100 pixels.', $violations->get(0)
            ->getMessage());
        // Maximum size.
        if ($this->container
            ->get('image.factory')
            ->getToolkitId()) {
            // Copy the image so that the original doesn't get resized.
            copy('core/misc/druplicon.png', 'temporary://druplicon.png');
            $this->image
                ->setFileUri('temporary://druplicon.png');
            $validators = [
                'FileImageDimensions' => [
                    'maxDimensions' => '10x5',
                ],
            ];
            $violations = $this->validator
                ->validate($this->image, $validators);
            $this->assertCount(0, $violations, 'No errors should be reported when an oversized image can be scaled down.');
            $image = $this->container
                ->get('image.factory')
                ->get($this->image
                ->getFileUri());
            // Verify that the image was scaled to the correct width and height.
            $this->assertLessThanOrEqual(10, $image->getWidth());
            $this->assertLessThanOrEqual(5, $image->getHeight());
            // Once again, now with negative width and height to force an error.
            copy('core/misc/druplicon.png', 'temporary://druplicon.png');
            $this->image
                ->setFileUri('temporary://druplicon.png');
            $validators = [
                'FileImageDimensions' => [
                    'maxDimensions' => '-10x-5',
                ],
            ];
            $violations = $this->validator
                ->validate($this->image, $validators);
            $this->assertCount(1, $violations);
            $this->assertEquals('The image exceeds the maximum allowed dimensions and an attempt to resize it failed.', $violations->get(0)
                ->getMessage());
            \Drupal::service('file_system')->unlink('temporary://druplicon.png');
        }
        else {
            // @todo Should check that the error is returned if no toolkit is available.
            $validators = [
                'FileImageDimensions' => [
                    'maxDimensions' => '5x10',
                ],
            ];
            $violations = $this->validator
                ->validate($this->image, $validators);
            $this->assertCount(1, $violations, 'Oversize images that cannot be scaled get an error.');
            $this->assertEquals('The image exceeds the maximum allowed dimensions and an attempt to resize it failed.', $violations->get(0)
                ->getMessage());
        }
    }

}