<?php

declare(strict_types=1);

namespace App\Enum;

use App\Model\Isbn;

enum LabelType: string {
	case TEXT = 'text';
	case ISBN = 'isbn';
	case ISSN = 'issn';

	/**
	 * Brings a value to its stored form; an ISBN-10 becomes an ISBN-13. A value that cannot be
	 * normalized is returned as it is, and isValid() then rejects it.
	 */
	public function normalize(string $value): string {
		$compact = strtoupper(str_replace(['-', ' '], '', $value));

		return match ($this) {
			self::TEXT => trim($value),
			self::ISBN => Isbn::toIsbn13($compact) ?? $compact,
			self::ISSN => $compact,
		};
	}

	public function isValid(string $normalizedValue): bool {
		return match ($this) {
			self::TEXT => $normalizedValue !== '',
			self::ISBN => $normalizedValue === Isbn::toIsbn13($normalizedValue) && \strlen($normalizedValue) === 13,
			self::ISSN => preg_match('/^(\d{7}[\dX]|\d{13})$/', $normalizedValue) === 1,
		};
	}
}