<?php

namespace TablePress\PhpOffice\PhpSpreadsheet\Helper;

class Size
{
	const REGEXP_SIZE_VALIDATION = '/^(?P<size>\d*\.?\d+)(?P<unit>pt|px|em)?$/i';

	/**
	 * @var bool
	 */
	protected $valid;

	/**
	 * @var string
	 */
	protected $size = '';

	/**
	 * @var string
	 */
	protected $unit = '';

	public function __construct(string $size)
	{
		$this->valid = (bool) preg_match(self::REGEXP_SIZE_VALIDATION, $size, $matches);
		if ($this->valid) {
			$this->size = $matches['size'];
			$this->unit = $matches['unit'] ?? 'pt';
		}
	}

	public function valid(): bool
	{
		return $this->valid;
	}

	public function size(): string
	{
		return $this->size;
	}

	public function unit(): string
	{
		return $this->unit;
	}

	public function __toString()
	{
		return $this->size . $this->unit;
	}
}
