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<?php declare(strict_types=1);
namespace Stratadox\PuzzleSolver\Puzzle\NetworkNavigation;
use Stratadox\PuzzleSolver\InvalidFormat;
use Stratadox\PuzzleSolver\Puzzle;
use Stratadox\PuzzleSolver\PuzzleFactory;
use function json_decode;
use function json_last_error;
use function json_last_error_msg;
use const JSON_ERROR_NONE;
final class NetworkPuzzleFactory implements PuzzleFactory
{
public static function make(): PuzzleFactory
return new self();
}
public function fromString(string $puzzle): Puzzle
$network = [];
$data = json_decode($puzzle, true);
if (json_last_error() !== JSON_ERROR_NONE) {
throw InvalidFormat::couldNotLoad('network', $puzzle, json_last_error_msg());
foreach ($data['edges'] as $edge) {
$network[$edge['from']][$edge['to']] = $edge['cost'];
return NetworkNavigationPuzzle::fromArrayAndStartAndGoal(
$network,
$data['start'],
$data['goal']
);
Stratadox /
PuzzleSolver
