/**
* @param string $string
*
* @return Grid
*
* @throws \Exception
*/
public static function fromString($string)
{
$letters = str_split($string, count(static::numbers()));
$grid = new self();
foreach ($letters as $y => $letter) {
$numbers = str_split($letter);
foreach ($numbers as $x => $number) {
$number = (int) $number;
if ($number === 0) {
continue;
}
$ship = ShipFactory::build($number);
$direction = isset($numbers[$x + 1]) && $numbers[$x + 1] === $numbers[$x] ? Position::fromHorizontal() : Position::fromVertical();
try {
$grid = $grid->placeShip($ship, new Hole(Hole::numberToLetter($y + 1), $x + 1), $direction);
} catch (\Exception $e) {
}
}
}
if (!$grid->areAllShipsPlaced()) {
throw new \InvalidArgumentException('Invalid format: All ships are not placed');
}
if ($string !== $grid->render()) {
throw new \InvalidArgumentException('Invalid format');
}
return $grid;
}
