fetchAppDetails example

private readonly ShopIdProvider $shopIdProvider
    ) {
    }

    #[Route('/store-api/app-system/{name}/generate-token', name: 'store-api.app-system.generate-token', methods: ['POST'])]     public function generate(string $name, SalesChannelContext $context): JsonResponse
    {
        if ($context->getCustomer() === null) {
            throw AppException::jwtGenerationRequiresCustomerLoggedIn();
        }

        ['app_secret' => $appSecret, 'privileges' => $privileges] = $this->fetchAppDetails($name);

        $key = InMemory::plainText($appSecret);

        $configuration = Configuration::forSymmetricSigner(
            new Sha256(),
            $key
        );

        $expiration = new \DateTimeImmutable('+10 minutes');
        $shopId = $this->shopIdProvider->getShopId();
        $builder = $configuration