<?php
/**
 * Which gettext strings are worth listing: has letters, not huge, not
 * WordPress core (its language pack covers it), not editor metadata that
 * WordPress translates while rendering (theme.json color and font names,
 * template and block titles). Filters: blocklingo_strings_skip_domains, blocklingo_strings_skip_context.
 */

declare( strict_types = 1 );

namespace AddBlack\Lang\Strings;

defined( 'ABSPATH' ) || exit;

final class StringRules {

	/** @var string[]|null */
	private ?array $skip_domains = null;

	public function collectable( string $text, string $domain, string $context ): bool {
		if ( strlen( $text ) > 2000 || ! preg_match( '/\p{L}/u', $text ) ) {
			return false;
		}
		if ( null === $this->skip_domains ) {
			$this->skip_domains = (array) apply_filters( 'blocklingo_strings_skip_domains', array( 'default' ) );
		}
		if ( in_array( $domain, $this->skip_domains, true ) ) {
			return false;
		}
		$skip_context = (string) apply_filters( 'blocklingo_strings_skip_context', '/(?:\bname|^block .+|^style variation.*|^pattern .+|^template part area)$/i' );
		return '' === $context || '' === $skip_context || ! preg_match( $skip_context, $context );
	}

	/** Tests: read the filters again. */
	public function reset(): void {
		$this->skip_domains = null;
	}
}