enum'];
				}

				if ( ( ! isset( $config['required'] ) || true !== $config['required'] ) && ! in_array( $property, $required, true ) ) {
					$param['optional'] = true;
				}

				if ( isset( $config['description'] ) ) {
					$param['description'] = $config['description'];
				}

				$synopsis[] = $param;
			}
		}

		if ( ! empty( $schema['additionalProperties'] ) ) {
			$synopsis[] = [
				'type' => 'generic',
			];
		}

		return $synopsis;
	}

	/**
	 * Decode a string with URL-safe Base64.
	 *
	 * @param string $input A Base64 encoded string
	 *
	 * @return string A decoded string
	 */
	public static function url_safe_b64_decode( $input ) {
		$remainder = strlen( $input ) % 4;
		if ( $remainder ) {
			$padlen = 4 - $remainder;
			$input  .= str_repeat( '=', $padlen );
		}

		return base64_decode( strtr( $input, '-_', '+/' ) );
	}

	/**
	 * Encode a string with URL-safe Base64.
	 *
	 * @param string $input The string you want encoded
	 *
	 * @return string The base64 encode of what you passed in
	 */
	public static function url_safe_b64_encode( $input ) {
		return str_replace( '=', '', strtr( base64_encode( $input ), '+/', '-_' ) );
	}

	/**
	 * Compares the WordPress version with the given version.
	 *
	 * @param string $version   The version to compare with.
	 * @param string $operator  The operator.
	 * @param bool   $allow_dev Whether to treat dev versions as stable.
	 *
	 * @return bool
	 */
	public static function wp_version_compare( $version, $operator, $allow_dev = true ) {
		global $wp_version;

		if ( $allow_dev ) {
			list( $wp_version ) = explode( '-', $wp_version );
		}

		return version_compare( $wp_version, $version, $operator );
	}

	/**
	 * Checks if the WordPress version is at least the given version.
	 *
	 * @param string $version   The version to check WP for.
	 * @param bool   $allow_dev Whether to treat dev versions as stable.
	 *
	 * @return bool
	 */
	public static function is_wp_version_at_least( $version, $allow_dev = true ) {
		return static::wp_version_compare( $version, '>=', $allow_dev );
	}

	/**
	 * Gets the WordPress login URL.
	 *
	 * @param string $action   A particular login action to use.
	 * @param string $redirect Where to redirect the user to after login.
	 * @param string $scheme   The scheme to use. Accepts `login_post` for form submissions.
	 *
	 * @return string
	 */
	public static function get_login_url( $action = '', $redirect = '', $scheme = 'login' ) {
		if ( 'login_post' === $scheme || ( $action && 'login' !== $action ) ) {
			$url = 'wp-login.php';

			if ( $action ) {
				$url = add_query_arg( 'action', urlencode( $action ), $url );
			}

			if ( $redirect ) {
				$url = add_query_arg( 'redirect_to', urlencode( $redirect ), $url );
			}

			$url = site_url( $url, $scheme );
		} else {
			$url = wp_login_url( $redirect );

			if ( $action ) {
				$url = add_query_arg( 'action', urlencode( $action ), $url );
			}
		}

		if ( function_exists( 'is_wpe' ) && is_wpe() ) {
			$url = add_query_arg( 'wpe-login', 'true', $url );
		}

		return apply_filters( 'itsec_login_url', $url, $action, $redirect, $scheme );
	}

	/**
	 * Extends a service definition, ignoring if the service has been frozen.
	 *
	 * @param \iThemesSecurity\Strauss\Pimple\Container $c
	 * @param string                                    $id
	 * @param callable                                  $extend
	 *
	 * @return bool
	 */
	public static function extend_if_able( \iThemesSecurity\Strauss\Pimple\Container $c, string $id, callable $extend ): bool {
		try {
			$c->extend( $id, $extend );

			return true;
		} catch ( \iThemesSecurity\Strauss\Pimple\Exception\FrozenServiceException $e ) {
			return false;
		}
	}

	/**
	 * Resolve JSON Schema refs.
	 *
	 * @param array $schema
	 *
	 * @return array
	 */
	public static function resolve_schema_refs( array $schema ): array {
		if ( isset( $schema['definitions'] ) ) {
			array_walk( $schema, [ static::class, 'resolve_ref' ], $schema['definitions'] );
		}

		return $schema;
	}

	/**
	 * Resolves $ref entries at any point in the config.
	 *
	 * Currently, only a simplified form of JSON Pointers are supported where `/` is the only
	 * allowed control character.
	 *
	 * Additionally, the `$ref` keyword must start with `#/definitions`.
	 *
	 * @param mixed  $value       The incoming value.
	 * @param string $key         The array key.
	 * @param array  $definitions The shared definitions.
	 */
	private static function resolve_ref( &$value, $key, $definitions ) {
		if ( ! is_array( $value ) ) {
			return;
		}

		if ( isset( $value['$ref'] ) ) {
			$ref   = str_replace( '#/definitions/', '', $value['$ref'] );
			$value = \ITSEC_Lib::array_get( $definitions, $ref, null, '/' );

			return;
		}

		array_walk( $value, [ static::class, 'resolve_ref' ], $definitions );
	}

	/**
	 * Generates a v4 UUID using a CSPRNG.
	 *
	 * @return string
	 */
	public static function generate_uuid4(): string {
		return sprintf(
			'%04x%04x-%04x-%04x-%04x-%04x%04x%04x',
			wp_rand( 0, 0xffff ),
			wp_rand( 0, 0xffff ),
			wp_rand( 0, 0xffff ),
			wp_rand( 0, 0x0fff ) | 0x4000,
			wp_rand( 0, 0x3fff ) | 0x8000,
			wp_rand( 0, 0xffff ),
			wp_rand( 0, 0xffff ),
			wp_rand( 0, 0xffff )
		);
	}

	/**
	 * Clears the WordPress auth cookies.
	 *
	 * This function is safe to call before plugins have been loaded.
	 * But the request MUST exist after calling it.
	 *
	 * @return void
	 */
	public static function clear_auth_cookie() {
		if ( ! function_exists( 'wp_clear_auth_cookie' ) ) {
			if ( is_multisite() ) {
				ms_cookie_constants();
			}

			// Define constants after multisite is loaded.
			wp_cookie_constants();

			require_once ABSPATH . 'wp-includes/pluggable.php';
		}

		wp_clear_auth_cookie();
	}

	public static function recursively_json_serialize( $value ) {
		if ( $value instanceof JsonSerializable ) {
			return $value->jsonSerialize();
		}

		if ( is_array( $value ) ) {
			foreach ( $value as $k => $v ) {
				$value[ $k ] = self::recursively_json_serialize( $v );
			}
		}

		return $value;
	}
}