<?php declare(strict_types=1);
/**
 * Convertors
 *
 * @package wp-fail2ban
 * @since   4.4.0   Require PHP 7.4
 * @since   4.3.0
 */
namespace org\lecklider\charles\wordpress\wp_fail2ban;

defined( 'ABSPATH' ) or exit;

/**
 * Convert various things to various other things.
 *
 * @since 4.3.0
 */
abstract class ConvertData {

	/**
	 * @since 4.3.0
	 *
	 * @var array Map priority value to name.
	 */
	const PRIORITY2NAME = array(
		LOG_CRIT    => 'critical',
		LOG_ERR     => 'error',
		LOG_WARNING => 'warning',
		LOG_NOTICE  => 'notice',
		LOG_INFO    => 'info',
		LOG_DEBUG   => 'debug',
	);

	/**
	 * @var int[] Map syslog facility name to value.
	 */
	protected static $FacilityName2Value = array();

	/**
	 * Convert: Syslog Priority value to slug.
	 *
	 * @since  4.4.0    Add type hint, return type
	 * @since  4.3.0
	 *
	 * @param  int $val    Syslog priority value.
	 * @return string|null          Syslog priority slug.
	 */
	public static function intToSyslogPrioritySlug( int $val ): ?string {
		return array_value( $val, self::PRIORITY2NAME );
	}

	/**
	 * Convert: Syslog Priority value to name.
	 *
	 * @since  4.4.0    Add type hint, return type
	 * @since  4.3.0
	 *
	 * @param  int $val    Syslog priority value.
	 * @return string|null          Syslog priority slug.
	 */
	public static function intToSyslogPriorityName( int $val ): ?string {
		return ( is_null( $name = self::intToSyslogPrioritySlug( $val ) ) )
			? null
			: ucfirst( $name );
	}

	/**
	 * Helper: Return array of facilities => values.
	 *
	 * Makes Windows happier.
	 *
	 * @since  4.4.0    Add return type
	 * @since  4.3.0.10
	 *
	 * @return array
	 *
	 * @codeCoverageIgnore
	 */
	public static function getFacilityNames2Values(): array {
		if ( empty( self::$FacilityName2Value ) ) {
			self::$FacilityName2Value = array(
				'LOG_AUTH'     => LOG_AUTH,
				'LOG_AUTHPRIV' => LOG_AUTHPRIV,
				'LOG_CRON'     => LOG_CRON,
				'LOG_DAEMON'   => LOG_DAEMON,
				'LOG_KERN'     => LOG_KERN,
			);
			if ( defined( 'PHP_WINDOWS_VERSION_BUILD' ) ) {
				self::$FacilityName2Value += array(
					'LOG_LOCAL0' => 128,
					'LOG_LOCAL1' => 136,
					'LOG_LOCAL2' => 144,
					'LOG_LOCAL3' => 152,
					'LOG_LOCAL4' => 160,
					'LOG_LOCAL5' => 168,
					'LOG_LOCAL6' => 176,
					'LOG_LOCAL7' => 184,
				);
			} else {
				self::$FacilityName2Value += array(
					'LOG_LOCAL0' => LOG_LOCAL0,
					'LOG_LOCAL1' => LOG_LOCAL1,
					'LOG_LOCAL2' => LOG_LOCAL2,
					'LOG_LOCAL3' => LOG_LOCAL3,
					'LOG_LOCAL4' => LOG_LOCAL4,
					'LOG_LOCAL5' => LOG_LOCAL5,
					'LOG_LOCAL6' => LOG_LOCAL6,
					'LOG_LOCAL7' => LOG_LOCAL7,
				);
			}
			self::$FacilityName2Value += array(
				'LOG_LPR'    => LOG_LPR,
				'LOG_MAIL'   => LOG_MAIL,
				'LOG_NEWS'   => LOG_NEWS,
				'LOG_SYSLOG' => LOG_SYSLOG,
				'LOG_USER'   => LOG_USER,
				'LOG_UUCP'   => LOG_UUCP,
			);
		}

		return self::$FacilityName2Value;
	}
}