<?php

namespace TablePress\PhpOffice\PhpSpreadsheet\Reader\Xml\Style;

use TablePress\PhpOffice\PhpSpreadsheet\Style\Border as BorderStyle;
use TablePress\PhpOffice\PhpSpreadsheet\Style\Borders;
use SimpleXMLElement;

class Border extends StyleBase
{
	protected const BORDER_POSITIONS = [
		'top',
		'left',
		'bottom',
		'right',
	];

	/**
	 * @var array
	 */
	public const BORDER_MAPPINGS = [
		'borderStyle' => [
			'1continuous' => BorderStyle::BORDER_THIN,
			'1dash' => BorderStyle::BORDER_DASHED,
			'1dashdot' => BorderStyle::BORDER_DASHDOT,
			'1dashdotdot' => BorderStyle::BORDER_DASHDOTDOT,
			'1dot' => BorderStyle::BORDER_DOTTED,
			'1double' => BorderStyle::BORDER_DOUBLE,
			'2continuous' => BorderStyle::BORDER_MEDIUM,
			'2dash' => BorderStyle::BORDER_MEDIUMDASHED,
			'2dashdot' => BorderStyle::BORDER_MEDIUMDASHDOT,
			'2dashdotdot' => BorderStyle::BORDER_MEDIUMDASHDOTDOT,
			'2dot' => BorderStyle::BORDER_DOTTED,
			'2double' => BorderStyle::BORDER_DOUBLE,
			'3continuous' => BorderStyle::BORDER_THICK,
			'3dash' => BorderStyle::BORDER_MEDIUMDASHED,
			'3dashdot' => BorderStyle::BORDER_MEDIUMDASHDOT,
			'3dashdotdot' => BorderStyle::BORDER_MEDIUMDASHDOTDOT,
			'3dot' => BorderStyle::BORDER_DOTTED,
			'3double' => BorderStyle::BORDER_DOUBLE,
		],
	];

	public function parseStyle(SimpleXMLElement $styleData, array $namespaces): array
	{
		$style = [];

		$diagonalDirection = '';
		$borderPosition = '';
		foreach ($styleData->Border as $borderStyle) {
			$borderAttributes = self::getAttributes($borderStyle, $namespaces['ss']);
			$thisBorder = [];
			$styleType = (string) $borderAttributes->Weight;
			$styleType .= strtolower((string) $borderAttributes->LineStyle);
			$thisBorder['borderStyle'] = self::BORDER_MAPPINGS['borderStyle'][$styleType] ?? BorderStyle::BORDER_NONE;

			foreach ($borderAttributes as $borderStyleKey => $borderStyleValuex) {
				$borderStyleValue = (string) $borderStyleValuex;
				switch ($borderStyleKey) {
					case 'Position':
						[$borderPosition, $diagonalDirection] =
							$this->parsePosition($borderStyleValue, $diagonalDirection);

						break;
					case 'Color':
						$borderColour = substr($borderStyleValue, 1);
						$thisBorder['color']['rgb'] = $borderColour;

						break;
				}
			}

			if ($borderPosition) {
				$style['borders'][$borderPosition] = $thisBorder;
			} elseif ($diagonalDirection) {
				$style['borders']['diagonalDirection'] = $diagonalDirection;
				$style['borders']['diagonal'] = $thisBorder;
			}
		}

		return $style;
	}

	protected function parsePosition(string $borderStyleValue, string $diagonalDirection): array
	{
		$borderStyleValue = strtolower($borderStyleValue);

		if (in_array($borderStyleValue, self::BORDER_POSITIONS)) {
			$borderPosition = $borderStyleValue;
		} elseif ($borderStyleValue === 'diagonalleft') {
			$diagonalDirection = $diagonalDirection ? Borders::DIAGONAL_BOTH : Borders::DIAGONAL_DOWN;
		} elseif ($borderStyleValue === 'diagonalright') {
			$diagonalDirection = $diagonalDirection ? Borders::DIAGONAL_BOTH : Borders::DIAGONAL_UP;
		}

		return [$borderPosition ?? null, $diagonalDirection];
	}
}
