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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace CMPayments\PaymentSdk;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use CMPayments\GuzzlePSPAuthenticationMiddleware\AuthenticationMiddleware;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use CMPayments\PaymentSdk\Requests\RequestInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use GuzzleHttp\Client as HttpClient;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use GuzzleHttp\HandlerStack;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Gateway to the payments API.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @package CMPayments\PaymentSdk  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Jory Geerts <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class Gateway  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const API_URL = 'https://api.cmpayments.com/';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const REQUEST_METHOD_POST = 'POST';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    const REQUEST_METHOD_GET = 'GET';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var HttpClient  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $httpClient;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Gateway constructor.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param Credentials $credentials  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param HttpClient|null $httpClient  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function __construct(Credentials $credentials, HttpClient $httpClient = null)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        if (!$httpClient) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $httpClient = new HttpClient([  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                'base_uri' => static::API_URL  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            ]);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->httpClient = $httpClient;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        /** @var HandlerStack $handlerStack */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $handlerStack = $httpClient->getConfig('handler'); | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $handlerStack->push(  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            new AuthenticationMiddleware(  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                $credentials->getMerchantKey(),  | 
            
            
                                                                        
                            
            
                                    
            
            
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                                $credentials->getMerchantSecret()  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            )  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Execute a request against the Payments API.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param RequestInterface $request  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function execute(RequestInterface $request)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $guzzleResponse = $this->httpClient->request(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $request->getRequestMethod(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $request->getEndpoint(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'json' => $request->getPayload()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return \GuzzleHttp\json_decode($guzzleResponse->getBody()->getContents());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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