Sirius\Validation\Rule\Upload\ImageRatio

Complexity

Total Complexity

6

Size/Duplication

Total Lines	42
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

Test Coverage

Coverage

94.44%

Importance

Changes

0

1 Method

Rating	Name	Duplication	Size	Complexity
B	validate()	0	24	6

<?php
declare(strict_types=1);
namespace Sirius\Validation\Rule\Upload;

use Sirius\Validation\Rule\AbstractRule;
use Sirius\Validation\Util\RuleHelper;

class ImageRatio extends AbstractRule
{
    // the image width/height ration;
    // can be a number or a string like 4:3, 16:9
    const OPTION_RATIO = 'ratio';
    // how much can the image ratio diverge from the allowed ratio
    const OPTION_ERROR_MARGIN = 'error_margin';

    const MESSAGE = 'The image does must have a ratio (width/height) of {ratio})';

    const LABELED_MESSAGE = '{label} does must have a ratio (width/height) of {ratio})';

    protected $options = [
        self::OPTION_RATIO        => 0,
        self::OPTION_ERROR_MARGIN => 0,
    ];

    public function validate($value, string $valueIdentifier = null)
    {
        $this->value = $value;
        $ratio       = RuleHelper::normalizeImageRatio($this->options[self::OPTION_RATIO]);
        if (! is_array($value) || ! isset($value['tmp_name'])) {
            $this->success = false;
        } elseif (! file_exists($value['tmp_name'])) {
            $this->success = $value['error'] === UPLOAD_ERR_NO_FILE;
        } elseif ($ratio == 0) {
            $this->success = true;
        } else {
            $imageInfo     = getimagesize($value['tmp_name']);

            if (is_array($imageInfo)) {
                $actualRatio   = $imageInfo[0] / $imageInfo[1];
                $this->success = abs($actualRatio - $ratio) <= $this->options[self::OPTION_ERROR_MARGIN];
            } else {
                // no image size computed => no valid image
                return $this->success = false;
            }
        }

        return $this->success;
    }
}