ManipulateThumbnailsInChoiceQuestionsTrait.php

Go to the documentation of this file.

<?php

declare(strict_types=1);

namespace ILIAS\TestQuestionPool;

trait ManipulateThumbnailsInChoiceQuestionsTrait
{
    public function rebuildThumbnails(
        bool $is_single_line,
        int $thumbnail_size,
        string $image_path,
        array $answers
    ): array {
        if (!$is_single_line || $thumbnail_size === 0) {
            return $answers;
        }

        foreach ($answers as $answer) {
            if ($answer->getImage() === '') {
                continue;
            }

            $thumb_path = $image_path . $this->getThumbPrefix() . $answer->getImage();
            if (file_exists($thumb_path)) {
                unlink($thumb_path);
            }

            $current_file_path = $image_path . $answer->getImage();
            if (!file_exists($current_file_path)) {
                continue;
            }
            $new_file_name = $this->buildHashedImageFilename($answer->getImage(), true);
            $new_file_path = $image_path . $new_file_name;
            rename($current_file_path, $new_file_path);
            $answer->setImage($new_file_name);

            $this->generateThumbForFile(
                $new_file_name,
                $image_path,
                $thumbnail_size
            );
        }

        return $answers;
    }

    public function getThumbPrefix(): string
    {
        return "thumb.";
    }

    public function generateThumbForFile(
        string $file_name,
        string $image_path,
        int $thumbnail_size,
    ): void {
        $file_path = $image_path . $file_name;
        if (!file_exists($file_path)) {
            return;
        }

        $thumb_path = $image_path . $this->getThumbPrefix() . $file_name;
        $path_info = pathinfo($file_path);
        $ext = "";
        switch (strtoupper($path_info['extension'])) {
            case 'PNG':
                $ext = 'PNG';
                break;
            case 'GIF':
                $ext = 'GIF';
                break;
            default:
                $ext = 'JPEG';
                break;
        }
        \ilShellUtil::convertImage($file_path, $thumb_path, $ext, (string) $thumbnail_size, );
    }
}