<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\HttpKernel;

use Symfony\Component\HttpFoundation\Exception\RequestExceptionInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\RequestStack;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Controller\ArgumentResolver;
use Symfony\Component\HttpKernel\Controller\ArgumentResolverInterface;
use Symfony\Component\HttpKernel\Controller\ControllerResolverInterface;
use Symfony\Component\HttpKernel\Event\ControllerArgumentsEvent;
use Symfony\Component\HttpKernel\Event\ControllerEvent;
use Symfony\Component\HttpKernel\Event\ExceptionEvent;
use Symfony\Component\HttpKernel\Event\FinishRequestEvent;
use Symfony\Component\HttpKernel\Event\RequestEvent;
use Symfony\Component\HttpKernel\Event\ResponseEvent;
use Symfony\Component\HttpKernel\Event\TerminateEvent;
use Symfony\Component\HttpKernel\Event\ViewEvent;
use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
use Symfony\Component\HttpKernel\Exception\ControllerDoesNotReturnResponseException;
use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;

// Help opcache.preload discover always-needed symbols
class_exists(ControllerArgumentsEvent::class);
class_exists(ControllerEvent::class);
class_exists(ExceptionEvent::class);
class_exists(FinishRequestEvent::class);
class_exists(RequestEvent::class);
class_exists(ResponseEvent::class);
class_exists(TerminateEvent::class);
class_exists(ViewEvent::class);
class_exists(KernelEvents::class);

/**
 * HttpKernel notifies events to convert a Request object to a Response one.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class HttpKernel implements HttpKernelInterface, TerminableInterface
{
    protected $dispatcher;
    protected $resolver;
    protected $requestStack;
    private $argumentResolver;

    public function __construct(EventDispatcherInterface $dispatcher, ControllerResolverInterface $resolver, RequestStack $requestStack = null, ArgumentResolverInterface $argumentResolver = null)
    {
        $this->dispatcher = $dispatcher;
        $this->resolver = $resolver;
        $this->requestStack = $requestStack ?? new RequestStack();
        $this->argumentResolver = $argumentResolver ?? new ArgumentResolver();
    }

    /**
     * {@inheritdoc}
     */
    public function handle(Request $request, int $type = HttpKernelInterface::MAIN_REQUEST, bool $catch = true): Response
    {
        $request->headers->set('X-Php-Ob-Level', (string) ob_get_level());

        $this->requestStack->push($request);
        try {
            return $this->handleRaw($request, $type);
        } catch (\Exception $e) {
            if ($e instanceof RequestExceptionInterface) {
                $e = new BadRequestHttpException($e->getMessage(), $e);
            }
            if (false === $catch) {
                $this->finishRequest($request, $type);

                throw $e;
            }

            return $this->handleThrowable($e, $request, $type);
        } finally {
            $this->requestStack->pop();
        }
    }

    /**
     * {@inheritdoc}
     */
    public function terminate(Request $request, Response $response)
    {
        $this->dispatcher->dispatch(new TerminateEvent($this, $request, $response), KernelEvents::TERMINATE);
    }

    /**
     * @internal
     */
    public function terminateWithException(\Throwable $exception, Request $request = null)
    {
        if (!$request = $request ?: $this->requestStack->getMainRequest()) {
            throw $exception;
        }

        if ($pop = $request !== $this->requestStack->getMainRequest()) {
            $this->requestStack->push($request);
        }

        try {
            $response = $this->handleThrowable($exception, $request, self::MAIN_REQUEST);
        } finally {
            if ($pop) {
                $this->requestStack->pop();
            }
        }

        $response->sendHeaders();
        $response->sendContent();

        $this->terminate($request, $response);
    }

    /**
     * Handles a request to convert it to a response.
     *
     * Exceptions are not caught.
     *
     * @throws \LogicException       If one of the listener does not behave as expected
     * @throws NotFoundHttpException When controller cannot be found
     */
    private function handleRaw(Request $request, int $type = self::MAIN_REQUEST): Response
    {
        // request
        $event = new RequestEvent($this, $request, $type);
        $this->dispatcher->dispatch($event, KernelEvents::REQUEST);

        if ($event->hasResponse()) {
            return $this->filterResponse($event->getResponse(), $request, $type);
        }

        // load controller
        if (false === $controller = $this->resolver->getController($request)) {
            throw new NotFoundHttpException(sprintf('Unable to find the controller for path "%s". The route is wrongly configured.', $request->getPathInfo()));
        }

        $event = new ControllerEvent($this, $controller, $request, $type);
        $this->dispatcher->dispatch($event, KernelEvents::CONTROLLER);
        $controller = $event->getController();

        // controller arguments
        $arguments = $this->argumentResolver->getArguments($request, $controller);

        $event = new ControllerArgumentsEvent($this, $controller, $arguments, $request, $type);
        $this->dispatcher->dispatch($event, KernelEvents::CONTROLLER_ARGUMENTS);
        $controller = $event->getController();
        $arguments = $event->getArguments();

        // call controller
        $response = $controller(...$arguments);

        // view
        if (!$response instanceof Response) {
            $event = new ViewEvent($this, $request, $type, $response);
            $this->dispatcher->dispatch($event, KernelEvents::VIEW);

            if ($event->hasResponse()) {
                $response = $event->getResponse();
            } else {
                $msg = sprintf('The controller must return a "Symfony\Component\HttpFoundation\Response" object but it returned %s.', $this->varToString($response));

                // the user may have forgotten to return something
                if (null === $response) {
                    $msg .= ' Did you forget to add a return statement somewhere in your controller?';
                }

                throw new ControllerDoesNotReturnResponseException($msg, $controller, __FILE__, __LINE__ - 17);
            }
        }

        return $this->filterResponse($response, $request, $type);
    }

    /**
     * Filters a response object.
     *
     * @throws \RuntimeException if the passed object is not a Response instance
     */
    private function filterResponse(Response $response, Request $request, int $type): Response
    {
        $event = new ResponseEvent($this, $request, $type, $response);

        $this->dispatcher->dispatch($event, KernelEvents::RESPONSE);

        $this->finishRequest($request, $type);

        return $event->getResponse();
    }

    /**
     * Publishes the finish request event, then pop the request from the stack.
     *
     * Note that the order of the operations is important here, otherwise
     * operations such as {@link RequestStack::getParentRequest()} can lead to
     * weird results.
     */
    private function finishRequest(Request $request, int $type)
    {
        $this->dispatcher->dispatch(new FinishRequestEvent($this, $request, $type), KernelEvents::FINISH_REQUEST);
    }

    /**
     * Handles a throwable by trying to convert it to a Response.
     *
     * @throws \Exception
     */
    private function handleThrowable(\Throwable $e, Request $request, int $type): Response
    {
        $event = new ExceptionEvent($this, $request, $type, $e);
        $this->dispatcher->dispatch($event, KernelEvents::EXCEPTION);

        // a listener might have replaced the exception
        $e = $event->getThrowable();

        if (!$event->hasResponse()) {
            $this->finishRequest($request, $type);

            throw $e;
        }

        $response = $event->getResponse();

        // the developer asked for a specific status code
        if (!$event->isAllowingCustomResponseCode() && !$response->isClientError() && !$response->isServerError() && !$response->isRedirect()) {
            // ensure that we actually have an error response
            if ($e instanceof HttpExceptionInterface) {
                // keep the HTTP status code and headers
                $response->setStatusCode($e->getStatusCode());
                $response->headers->add($e->getHeaders());
            } else {
                $response->setStatusCode(500);
            }
        }

        try {
            return $this->filterResponse($response, $request, $type);
        } catch (\Exception $e) {
            return $response;
        }
    }

    /**
     * Returns a human-readable string for the specified variable.
     */
    private function varToString(mixed $var): string
    {
        if (\is_object($var)) {
            return sprintf('an object of type %s', \get_class($var));
        }

        if (\is_array($var)) {
            $a = [];
            foreach ($var as $k => $v) {
                $a[] = sprintf('%s => ...', $k);
            }

            return sprintf('an array ([%s])', mb_substr(implode(', ', $a), 0, 255));
        }

        if (\is_resource($var)) {
            return sprintf('a resource (%s)', get_resource_type($var));
        }

        if (null === $var) {
            return 'null';
        }

        if (false === $var) {
            return 'a boolean value (false)';
        }

        if (true === $var) {
            return 'a boolean value (true)';
        }

        if (\is_string($var)) {
            return sprintf('a string ("%s%s")', mb_substr($var, 0, 255), mb_strlen($var) > 255 ? '...' : '');
        }

        if (is_numeric($var)) {
            return sprintf('a number (%s)', (string) $var);
        }

        return (string) $var;
    }
}

• [D] Attribute
• [D] Bundle
• [D] CacheClearer
• [D] CacheWarmer
• [D] Config
• [D] Controller
• [D] ControllerMetadata
• [D] DataCollector
• [D] Debug
• [D] DependencyInjection
• [D] Event
• [D] EventListener
• [D] Exception
• [D] Fragment
• [D] HttpCache
• [D] Log
• [D] Profiler
• [D] Resources
• [F] CHANGELOG.md
  Delete
• [F] composer.json
  Delete
• [F] HttpClientKernel.php
  Delete
• [F] HttpKernel.php
  Delete
• [F] HttpKernelBrowser.php
  Delete
• [F] HttpKernelInterface.php
  Delete
• [F] Kernel.php
  Delete
• [F] KernelEvents.php
  Delete
• [F] KernelInterface.php
  Delete
• [F] LICENSE
  Delete
• [F] README.md
  Delete
• [F] RebootableInterface.php
  Delete
• [F] TerminableInterface.php
  Delete
• [F] UriSigner.php
  Delete

About Section

About NFC Pay: Our Story and Mission

NFC Pay was founded with a vision to transform the way people handle transactions. Our journey is defined by a commitment to innovation, security, and convenience. We strive to deliver seamless, user-friendly payment solutions that make everyday transactions effortless and secure. Our mission is to empower you to pay with ease and confidence, anytime, anywhere.

• Simplifying Payments, One Tap at a Time.
• Reinventing Your Wallet for Modern Convenience.
• Smart Payments for a Effortless Lifestyle.
• Experience the Ease of Tap and Pay.
• Innovative Solutions for Your Daily Transactions.

FAQ Section

Frequently Asked Questions About NFC Pay

Here are answers to some common questions about NFC Pay. We aim to provide clear and concise information to help you understand how our platform works and how it can benefit you. If you have any further inquiries, please don’t hesitate to contact our support team.

How do I register for NFC Pay?

Download the app and sign up using your email or phone number, then complete the verification process.

Is my payment information secure?

Yes, we use advanced encryption and security protocols to protect your payment details.

Can I add multiple cards to my NFC Pay wallet?

Absolutely, you can link multiple debit or credit cards to your wallet.

How do I transfer money to another user?

Go to the transfer section, select the recipient, enter the amount, and authorize the transfer.

What should I do if I forget my PIN?

Use the “Forgot PIN” feature in the app to reset it following the provided instructions.

How can I activate my merchant account?

Sign up for a merchant account through the app and follow the setup instructions to start accepting payments.

Can I track my payment status?

Yes, you can view and track your payment status in the account dashboard