<?php

namespace LeagueTests\Grant;

use League\OAuth2\Server\Entities\AccessTokenEntityInterface;
use League\OAuth2\Server\Grant\ClientCredentialsGrant;
use League\OAuth2\Server\Repositories\AccessTokenRepositoryInterface;
use League\OAuth2\Server\Repositories\ClientRepositoryInterface;
use League\OAuth2\Server\Repositories\ScopeRepositoryInterface;
use LeagueTests\Stubs\AccessTokenEntity;
use LeagueTests\Stubs\ClientEntity;
use LeagueTests\Stubs\ScopeEntity;
use LeagueTests\Stubs\StubResponseType;
use PHPUnit\Framework\TestCase;
use Zend\Diactoros\ServerRequest;

class ClientCredentialsGrantTest extends TestCase
{
    const DEFAULT_SCOPE = 'basic';

    public function testGetIdentifier()
    {
        $grant = new ClientCredentialsGrant();
        $this->assertEquals('client_credentials', $grant->getIdentifier());
    }

    public function testRespondToRequest()
    {
        $client = new ClientEntity();
        $clientRepositoryMock = $this->getMockBuilder(ClientRepositoryInterface::class)->getMock();
        $clientRepositoryMock->method('getClientEntity')->willReturn($client);

        $accessTokenRepositoryMock = $this->getMockBuilder(AccessTokenRepositoryInterface::class)->getMock();
        $accessTokenRepositoryMock->method('getNewToken')->willReturn(new AccessTokenEntity());
        $accessTokenRepositoryMock->method('persistNewAccessToken')->willReturnSelf();

        $scope = new ScopeEntity();
        $scopeRepositoryMock = $this->getMockBuilder(ScopeRepositoryInterface::class)->getMock();
        $scopeRepositoryMock->method('getScopeEntityByIdentifier')->willReturn($scope);
        $scopeRepositoryMock->method('finalizeScopes')->willReturnArgument(0);

        $grant = new ClientCredentialsGrant();
        $grant->setClientRepository($clientRepositoryMock);
        $grant->setAccessTokenRepository($accessTokenRepositoryMock);
        $grant->setScopeRepository($scopeRepositoryMock);
        $grant->setDefaultScope(self::DEFAULT_SCOPE);

        $serverRequest = new ServerRequest();
        $serverRequest = $serverRequest->withParsedBody(
            [
                'client_id'     => 'foo',
                'client_secret' => 'bar',
            ]
        );

        $responseType = new StubResponseType();
        $grant->respondToAccessTokenRequest($serverRequest, $responseType, new \DateInterval('PT5M'));

        $this->assertInstanceOf(AccessTokenEntityInterface::class, $responseType->getAccessToken());
    }

    /**
     * @expectedException     \League\OAuth2\Server\Exception\OAuthServerException
     * @expectedExceptionCode 5
     */
    public function testRespondToRequestFailsWithoutScope()
    {
        $client = new ClientEntity();
        $clientRepositoryMock = $this->getMockBuilder(ClientRepositoryInterface::class)->getMock();
        $clientRepositoryMock->method('getClientEntity')->willReturn($client);

        $accessTokenRepositoryMock = $this->getMockBuilder(AccessTokenRepositoryInterface::class)->getMock();
        $accessTokenRepositoryMock->method('getNewToken')->willReturn(new AccessTokenEntity());
        $accessTokenRepositoryMock->method('persistNewAccessToken')->willReturnSelf();

        $scope = new ScopeEntity();
        $scopeRepositoryMock = $this->getMockBuilder(ScopeRepositoryInterface::class)->getMock();
        $scopeRepositoryMock->method('getScopeEntityByIdentifier')->willReturn($scope);
        $scopeRepositoryMock->method('finalizeScopes')->willReturnArgument(0);

        $grant = new ClientCredentialsGrant();
        $grant->setClientRepository($clientRepositoryMock);
        $grant->setAccessTokenRepository($accessTokenRepositoryMock);
        $grant->setScopeRepository($scopeRepositoryMock);

        $serverRequest = new ServerRequest();
        $serverRequest = $serverRequest->withParsedBody(
            [
                'client_id'     => 'foo',
                'client_secret' => 'bar',
            ]
        );

        $responseType = new StubResponseType();
        $grant->respondToAccessTokenRequest($serverRequest, $responseType, new \DateInterval('PT5M'));
    }
}