<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace Paysera\Scoped\Symfony\Component\Validator\Constraints;

use Paysera\Scoped\Symfony\Component\Validator\Constraint;
use Paysera\Scoped\Symfony\Component\Validator\Exception\ConstraintDefinitionException;
use Paysera\Scoped\Symfony\Component\Validator\Exception\LogicException;
use Paysera\Scoped\Symfony\Component\Validator\Exception\UnexpectedTypeException;
/**
 * Validates whether a value is a valid image file and is valid
 * against minWidth, maxWidth, minHeight and maxHeight constraints.
 *
 * @author Benjamin Dulau <benjamin.dulau@gmail.com>
 * @author Bernhard Schussek <bschussek@gmail.com>
 */
class ImageValidator extends FileValidator
{
    /**
     * {@inheritdoc}
     */
    public function validate($value, Constraint $constraint)
    {
        if (!$constraint instanceof Image) {
            throw new UnexpectedTypeException($constraint, Image::class);
        }
        $violations = \count($this->context->getViolations());
        parent::validate($value, $constraint);
        $failed = \count($this->context->getViolations()) !== $violations;
        if ($failed || null === $value || '' === $value) {
            return;
        }
        if (null === $constraint->minWidth && null === $constraint->maxWidth && null === $constraint->minHeight && null === $constraint->maxHeight && null === $constraint->minPixels && null === $constraint->maxPixels && null === $constraint->minRatio && null === $constraint->maxRatio && $constraint->allowSquare && $constraint->allowLandscape && $constraint->allowPortrait && !$constraint->detectCorrupted) {
            return;
        }
        $size = @\getimagesize($value);
        if (empty($size) || 0 === $size[0] || 0 === $size[1]) {
            $this->context->buildViolation($constraint->sizeNotDetectedMessage)->setCode(Image::SIZE_NOT_DETECTED_ERROR)->addViolation();
            return;
        }
        $width = $size[0];
        $height = $size[1];
        if ($constraint->minWidth) {
            if (!\ctype_digit((string) $constraint->minWidth)) {
                throw new ConstraintDefinitionException(\sprintf('"%s" is not a valid minimum width.', $constraint->minWidth));
            }
            if ($width < $constraint->minWidth) {
                $this->context->buildViolation($constraint->minWidthMessage)->setParameter('{{ width }}', $width)->setParameter('{{ min_width }}', $constraint->minWidth)->setCode(Image::TOO_NARROW_ERROR)->addViolation();
                return;
            }
        }
        if ($constraint->maxWidth) {
            if (!\ctype_digit((string) $constraint->maxWidth)) {
                throw new ConstraintDefinitionException(\sprintf('"%s" is not a valid maximum width.', $constraint->maxWidth));
            }
            if ($width > $constraint->maxWidth) {
                $this->context->buildViolation($constraint->maxWidthMessage)->setParameter('{{ width }}', $width)->setParameter('{{ max_width }}', $constraint->maxWidth)->setCode(Image::TOO_WIDE_ERROR)->addViolation();
                return;
            }
        }
        if ($constraint->minHeight) {
            if (!\ctype_digit((string) $constraint->minHeight)) {
                throw new ConstraintDefinitionException(\sprintf('"%s" is not a valid minimum height.', $constraint->minHeight));
            }
            if ($height < $constraint->minHeight) {
                $this->context->buildViolation($constraint->minHeightMessage)->setParameter('{{ height }}', $height)->setParameter('{{ min_height }}', $constraint->minHeight)->setCode(Image::TOO_LOW_ERROR)->addViolation();
                return;
            }
        }
        if ($constraint->maxHeight) {
            if (!\ctype_digit((string) $constraint->maxHeight)) {
                throw new ConstraintDefinitionException(\sprintf('"%s" is not a valid maximum height.', $constraint->maxHeight));
            }
            if ($height > $constraint->maxHeight) {
                $this->context->buildViolation($constraint->maxHeightMessage)->setParameter('{{ height }}', $height)->setParameter('{{ max_height }}', $constraint->maxHeight)->setCode(Image::TOO_HIGH_ERROR)->addViolation();
            }
        }
        $pixels = $width * $height;
        if (null !== $constraint->minPixels) {
            if (!\ctype_digit((string) $constraint->minPixels)) {
                throw new ConstraintDefinitionException(\sprintf('"%s" is not a valid minimum amount of pixels.', $constraint->minPixels));
            }
            if ($pixels < $constraint->minPixels) {
                $this->context->buildViolation($constraint->minPixelsMessage)->setParameter('{{ pixels }}', $pixels)->setParameter('{{ min_pixels }}', $constraint->minPixels)->setParameter('{{ height }}', $height)->setParameter('{{ width }}', $width)->setCode(Image::TOO_FEW_PIXEL_ERROR)->addViolation();
            }
        }
        if (null !== $constraint->maxPixels) {
            if (!\ctype_digit((string) $constraint->maxPixels)) {
                throw new ConstraintDefinitionException(\sprintf('"%s" is not a valid maximum amount of pixels.', $constraint->maxPixels));
            }
            if ($pixels > $constraint->maxPixels) {
                $this->context->buildViolation($constraint->maxPixelsMessage)->setParameter('{{ pixels }}', $pixels)->setParameter('{{ max_pixels }}', $constraint->maxPixels)->setParameter('{{ height }}', $height)->setParameter('{{ width }}', $width)->setCode(Image::TOO_MANY_PIXEL_ERROR)->addViolation();
            }
        }
        $ratio = \round($width / $height, 2);
        if (null !== $constraint->minRatio) {
            if (!\is_numeric((string) $constraint->minRatio)) {
                throw new ConstraintDefinitionException(\sprintf('"%s" is not a valid minimum ratio.', $constraint->minRatio));
            }
            if ($ratio < \round($constraint->minRatio, 2)) {
                $this->context->buildViolation($constraint->minRatioMessage)->setParameter('{{ ratio }}', $ratio)->setParameter('{{ min_ratio }}', \round($constraint->minRatio, 2))->setCode(Image::RATIO_TOO_SMALL_ERROR)->addViolation();
            }
        }
        if (null !== $constraint->maxRatio) {
            if (!\is_numeric((string) $constraint->maxRatio)) {
                throw new ConstraintDefinitionException(\sprintf('"%s" is not a valid maximum ratio.', $constraint->maxRatio));
            }
            if ($ratio > \round($constraint->maxRatio, 2)) {
                $this->context->buildViolation($constraint->maxRatioMessage)->setParameter('{{ ratio }}', $ratio)->setParameter('{{ max_ratio }}', \round($constraint->maxRatio, 2))->setCode(Image::RATIO_TOO_BIG_ERROR)->addViolation();
            }
        }
        if (!$constraint->allowSquare && $width == $height) {
            $this->context->buildViolation($constraint->allowSquareMessage)->setParameter('{{ width }}', $width)->setParameter('{{ height }}', $height)->setCode(Image::SQUARE_NOT_ALLOWED_ERROR)->addViolation();
        }
        if (!$constraint->allowLandscape && $width > $height) {
            $this->context->buildViolation($constraint->allowLandscapeMessage)->setParameter('{{ width }}', $width)->setParameter('{{ height }}', $height)->setCode(Image::LANDSCAPE_NOT_ALLOWED_ERROR)->addViolation();
        }
        if (!$constraint->allowPortrait && $width < $height) {
            $this->context->buildViolation($constraint->allowPortraitMessage)->setParameter('{{ width }}', $width)->setParameter('{{ height }}', $height)->setCode(Image::PORTRAIT_NOT_ALLOWED_ERROR)->addViolation();
        }
        if ($constraint->detectCorrupted) {
            if (!\function_exists('imagecreatefromstring')) {
                throw new LogicException('Corrupted images detection requires installed and enabled GD extension.');
            }
            $resource = @\imagecreatefromstring(\file_get_contents($value));
            if (\false === $resource) {
                $this->context->buildViolation($constraint->corruptedMessage)->setCode(Image::CORRUPTED_IMAGE_ERROR)->addViolation();
                return;
            }
            \imagedestroy($resource);
        }
    }
}
