wo-thirds';
				break;

			case 'illustration':
				$layout = 'fifty-fifty';
				break;

			default:
				$layout = 'full-width';
				break;
		}

		return $layout;
	}

	/**
	 * Get a major version.
	 *
	 * @since 1.8.7.2
	 *
	 * @param string $version Version.
	 *
	 * @return string Major version.
	 */
	private function get_major_version( $version ): string {

		// Allow only digits and dots.
		$clean_version = preg_replace( '/[^0-9.]/', '.', $version );

		// Get version parts.
		$version_parts = explode( '.', $clean_version );

		// If a version has more than 3 parts - use only first 3. Get block data only for major versions.
		if ( count( $version_parts ) > 3 ) {
			$version = implode( '.', array_slice( $version_parts, 0, 3 ) );
		}

		return $version;
	}

	/**
	 * Get the WPForms plugin previous version.
	 *
	 * @since 1.8.8
	 *
	 * @return string Previous WPForms version.
	 */
	private function get_previous_plugin_version(): string {

		$previous_version = get_option( MigrationsBase::PREVIOUS_CORE_VERSION_OPTION_NAME, '' );

		if ( ! empty( $previous_version ) ) {
			return $previous_version;
		}

		return '1.8.6'; // The last version before the "What's New?" feature.
	}
}