<?php
namespace Vichan\Service\Media;

use Vichan\Data\ThumbGenerationResult;


class FallbackThumbGenerator implements ThumbGenerator {
	private string $path;
	private int $width;
	private int $height;
	private string $mime;


	public function __construct(ImageMetadataReader $image_metadate_reader, string $default_thumb_path) {
		$res = $image_metadate_reader->getMetadata($default_thumb_path);
		$this->path = $default_thumb_path;
		$this->width = $res->width;
		$this->height = $res->height;
		$this->mime = $res->mime;
	}

	public function supportsMime(string $mime): bool {
		return true;
	}

	public function generateThumb(
		string $source_file_path,
		string $source_file_mime,
		string $preferred_out_file_path,
		string $preferred_out_mime,
		int $max_width,
		int $max_height
	): ThumbGenerationResult {
		$res = new ThumbGenerationResult();
		$res->thumb_file_path = $this->path;
		$res->thumb_mime = $this->mime;
		$res->is_thumb_file_temporary = false;
		$res->width = \min($this->width, $max_width);
		$res->height = \min($this->height, $max_height);
		return $res;
	}
}