use Fitodac\LaravelMercadoPago\Services\PreferenceService;

class CheckoutController
{
    public function createPreference(PreferenceService $preferenceService)
    {
        $preference = $preferenceService->create([
            'items' => [
                [
                    'title' => 'Product Name',
                    'quantity' => 1,
                    'unit_price' => 100.00
                ]
            ],
            'payer' => [
                'email' => '[email protected]'
            ]
        ]);

        return response()->json([
            'id' => $preference['id'],
            'init_point' => $preference['init_point']
        ]);
    }
}