<?php

namespace Box\Spout\Writer\ODS\Helper;

use Box\Spout\Writer\Style\BorderPart;
use Box\Spout\Writer\Style\Border;

/**
 * Class BorderHelper
 *
 * The fo:border, fo:border-top, fo:border-bottom, fo:border-left and fo:border-right attributes
 * specify border properties
 * http://docs.oasis-open.org/office/v1.2/os/OpenDocument-v1.2-os-part1.html#__RefHeading__1419780_253892949
 *
 * Example table-cell-properties
 *
 * <style:table-cell-properties
 * fo:border-bottom="0.74pt solid #ffc000" style:diagonal-bl-tr="none"
 * style:diagonal-tl-br="none" fo:border-left="none" fo:border-right="none"
 * style:rotation-align="none" fo:border-top="none"/>
 */
class BorderHelper {

	/**
	 * Width mappings
	 *
	 * @var array
	 */
	protected static $widthMap = array(
		Border::WIDTH_THIN   => '0.75pt',
		Border::WIDTH_MEDIUM => '1.75pt',
		Border::WIDTH_THICK  => '2.5pt',
	);

	/**
	 * Style mapping
	 *
	 * @var array
	 */
	protected static $styleMap = array(
		Border::STYLE_SOLID  => 'solid',
		Border::STYLE_DASHED => 'dashed',
		Border::STYLE_DOTTED => 'dotted',
		Border::STYLE_DOUBLE => 'double',
	);

	/**
	 * @param BorderPart $borderPart
	 * @return string
	 */
	public static function serializeBorderPart( BorderPart $borderPart ) {
		$definition = 'fo:border-%s="%s"';

		if ( $borderPart->getStyle() === Border::STYLE_NONE ) {
			$borderPartDefinition = sprintf( $definition, $borderPart->getName(), 'none' );
		} else {
			$attributes           = array(
				self::$widthMap[ $borderPart->getWidth() ],
				self::$styleMap[ $borderPart->getStyle() ],
				'#' . $borderPart->getColor(),
			);
			$borderPartDefinition = sprintf( $definition, $borderPart->getName(), implode( ' ', $attributes ) );
		}

		return $borderPartDefinition;
	}
}