<?php
/**
 * @author      Alex Bilbie <hello@alexbilbie.com>
 * @copyright   Copyright (c) Alex Bilbie
 * @license     http://mit-license.org/
 *
 * @link        https://github.com/thephpleague/oauth2-server
 */

namespace League\OAuth2\Server;

use DateInterval;
use Defuse\Crypto\Key;
use League\Event\EmitterAwareInterface;
use League\Event\EmitterAwareTrait;
use League\OAuth2\Server\Exception\OAuthServerException;
use League\OAuth2\Server\Grant\GrantTypeInterface;
use League\OAuth2\Server\Repositories\AccessTokenRepositoryInterface;
use League\OAuth2\Server\Repositories\ClientRepositoryInterface;
use League\OAuth2\Server\Repositories\ScopeRepositoryInterface;
use League\OAuth2\Server\RequestTypes\AuthorizationRequest;
use League\OAuth2\Server\ResponseTypes\AbstractResponseType;
use League\OAuth2\Server\ResponseTypes\BearerTokenResponse;
use League\OAuth2\Server\ResponseTypes\ResponseTypeInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;

class AuthorizationServer implements EmitterAwareInterface
{
    use EmitterAwareTrait;

    /**
     * @var GrantTypeInterface[]
     */
    protected $enabledGrantTypes = [];

    /**
     * @var DateInterval[]
     */
    protected $grantTypeAccessTokenTTL = [];

    /**
     * @var CryptKey
     */
    protected $privateKey;

    /**
     * @var CryptKey
     */
    protected $publicKey;

    /**
     * @var ResponseTypeInterface
     */
    protected $responseType;

    /**
     * @var ClientRepositoryInterface
     */
    private $clientRepository;

    /**
     * @var AccessTokenRepositoryInterface
     */
    private $accessTokenRepository;

    /**
     * @var ScopeRepositoryInterface
     */
    private $scopeRepository;

    /**
     * @var string|Key
     */
    private $encryptionKey;

    /**
     * @var string
     */
    private $defaultScope = '';

    /**
     * @var bool
     */
    private $revokeRefreshTokens = true;

    /**
     * New server instance.
     *
     * @param ClientRepositoryInterface      $clientRepository
     * @param AccessTokenRepositoryInterface $accessTokenRepository
     * @param ScopeRepositoryInterface       $scopeRepository
     * @param CryptKey|string                $privateKey
     * @param string|Key                     $encryptionKey
     * @param null|ResponseTypeInterface     $responseType
     */
    public function __construct(
        ClientRepositoryInterface $clientRepository,
        AccessTokenRepositoryInterface $accessTokenRepository,
        ScopeRepositoryInterface $scopeRepository,
        $privateKey,
        $encryptionKey,
        ResponseTypeInterface $responseType = null
    ) {
        $this->clientRepository = $clientRepository;
        $this->accessTokenRepository = $accessTokenRepository;
        $this->scopeRepository = $scopeRepository;

        if ($privateKey instanceof CryptKey === false) {
            $privateKey = new CryptKey($privateKey);
        }

        $this->privateKey = $privateKey;
        $this->encryptionKey = $encryptionKey;

        if ($responseType === null) {
            $responseType = new BearerTokenResponse();
        } else {
            $responseType = clone $responseType;
        }

        $this->responseType = $responseType;
    }

    /**
     * Enable a grant type on the server.
     *
     * @param GrantTypeInterface $grantType
     * @param null|DateInterval  $accessTokenTTL
     */
    public function enableGrantType(GrantTypeInterface $grantType, DateInterval $accessTokenTTL = null)
    {
        if ($accessTokenTTL === null) {
            $accessTokenTTL = new DateInterval('PT1H');
        }

        $grantType->setAccessTokenRepository($this->accessTokenRepository);
        $grantType->setClientRepository($this->clientRepository);
        $grantType->setScopeRepository($this->scopeRepository);
        $grantType->setDefaultScope($this->defaultScope);
        $grantType->setPrivateKey($this->privateKey);
        $grantType->setEmitter($this->getEmitter());
        $grantType->setEncryptionKey($this->encryptionKey);
        $grantType->revokeRefreshTokens($this->revokeRefreshTokens);

        $this->enabledGrantTypes[$grantType->getIdentifier()] = $grantType;
        $this->grantTypeAccessTokenTTL[$grantType->getIdentifier()] = $accessTokenTTL;
    }

    /**
     * Validate an authorization request
     *
     * @param ServerRequestInterface $request
     *
     * @throws OAuthServerException
     *
     * @return AuthorizationRequest
     */
    public function validateAuthorizationRequest(ServerRequestInterface $request)
    {
        foreach ($this->enabledGrantTypes as $grantType) {
            if ($grantType->canRespondToAuthorizationRequest($request)) {
                return $grantType->validateAuthorizationRequest($request);
            }
        }

        throw OAuthServerException::unsupportedGrantType();
    }

    /**
     * Complete an authorization request
     *
     * @param AuthorizationRequest $authRequest
     * @param ResponseInterface    $response
     *
     * @return ResponseInterface
     */
    public function completeAuthorizationRequest(AuthorizationRequest $authRequest, ResponseInterface $response)
    {
        return $this->enabledGrantTypes[$authRequest->getGrantTypeId()]
            ->completeAuthorizationRequest($authRequest)
            ->generateHttpResponse($response);
    }

    /**
     * Return an access token response.
     *
     * @param ServerRequestInterface $request
     * @param ResponseInterface      $response
     *
     * @throws OAuthServerException
     *
     * @return ResponseInterface
     */
    public function respondToAccessTokenRequest(ServerRequestInterface $request, ResponseInterface $response)
    {
        foreach ($this->enabledGrantTypes as $grantType) {
            if (!$grantType->canRespondToAccessTokenRequest($request)) {
                continue;
            }
            $tokenResponse = $grantType->respondToAccessTokenRequest(
                $request,
                $this->getResponseType(),
                $this->grantTypeAccessTokenTTL[$grantType->getIdentifier()]
            );

            if ($tokenResponse instanceof ResponseTypeInterface) {
                return $tokenResponse->generateHttpResponse($response);
            }
        }

        throw OAuthServerException::unsupportedGrantType();
    }

    /**
     * Get the token type that grants will return in the HTTP response.
     *
     * @return ResponseTypeInterface
     */
    protected function getResponseType()
    {
        $responseType = clone $this->responseType;

        if ($responseType instanceof AbstractResponseType) {
            $responseType->setPrivateKey($this->privateKey);
        }

        $responseType->setEncryptionKey($this->encryptionKey);

        return $responseType;
    }

    /**
     * Set the default scope for the authorization server.
     *
     * @param string $defaultScope
     */
    public function setDefaultScope($defaultScope)
    {
        $this->defaultScope = $defaultScope;
    }

    /**
     * Sets whether to revoke refresh tokens or not (for all grant types).
     *
     * @param bool $revokeRefreshTokens
     */
    public function revokeRefreshTokens(bool $revokeRefreshTokens): void
    {
        $this->revokeRefreshTokens = $revokeRefreshTokens;
    }
}

• [D] AuthorizationValidators
• [D] CodeChallengeVerifiers
• [D] Entities
• [D] Exception
• [D] Grant
• [D] Middleware
• [D] RedirectUriValidators
• [D] Repositories
• [D] RequestTypes
• [D] ResponseTypes
• [F] AuthorizationServer.php
  Delete
• [F] CryptKey.php
  Delete
• [F] CryptTrait.php
  Delete
• [F] RequestAccessTokenEvent.php
  Delete
• [F] RequestEvent.php
  Delete
• [F] RequestRefreshTokenEvent.php
  Delete
• [F] ResourceServer.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?

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Can I add multiple cards to my NFC Pay wallet?

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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?

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