<?php

namespace DbCopy\Transform;

class Group extends Transform
{
	private $_transforms;

	public function __construct(array $transforms)
	{
		$this->_transforms = $transforms;
	}

	public static function create(array $transforms): Group
	{
		return new Group($transforms);
	}

	public function __invoke($record): ?array
	{
		foreach ($this->_transforms as $transform)
		{
			$record = $transform($record);
			if (!isset($record))
				return null;
		}
		return $record;
	}
}