GoPay module for Drupal 8 - example

my_module.routing.yaml

my_module.gopay.test:
  path: '/my-module/gopay/test'
  defaults:
    _controller: '\Drupal\my_module\Controller\MyPurchaseController::testCallback'
    _title: 'GoPay Test'

my_module.gopay.test.result:
  path: '/my-module/test/result'
  defaults:
    _controller: '\Drupal\my_module\Controller\MyPurchaseController::testCallbackResult'
    _title: 'GoPay Test Result'

MyPurchaseCompleteController.php

<?php

namespace Drupal\my_module\Controller;

use Drupal\Core\Controller\ControllerBase;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Drupal\gopay\GoPayFactoryInterface;
use Drupal\Core\Url;
use Drupal\gopay\GoPayState;
use GoPay\Definition\Payment\Currency;
use Symfony\Component\HttpFoundation\Request;
use Drupal\gopay\Response\PaymentResponseInterface;

class MyPurchaseController extends ControllerBase {
  /**
   * GoPay Factory.
   *
   * @var \Drupal\gopay\GoPayFactoryInterface
   */
  protected $goPayFactory;

  public function __construct(GoPayFactoryInterface $go_pay_factory) {
    $this->goPayFactory = $go_pay_factory;
  }
  public static function create(ContainerInterface $container) {
    return new static(
      $container->get('gopay.factory')
    );
  }
  
  /**
   * Test callback page for GoPay.
   */
  public function testCallback() {
    $pay_it = $this->goPayFactory->createStandardPayment()
      ->setCurrency(Currency::EUROS)
      ->setDefaultPaymentInstrument(PaymentInstrument::PAYMENT_CARD)
      ->setAllowedPaymentInstruments([PaymentInstrument::PAYMENT_CARD, PaymentInstrument::BANK_ACCOUNT])
      ->setContact($this->goPayFactory->createContact()
        ->setFirstName('John')
        ->setLastName('Smith')
        ->setEmail('jsmith@gmail.com')
        ->setCity('City')
        ->setPhoneNumber(123456)
        ->setStreet('Main 1')
        ->setPostalCode(13)
        ->setCountryCode('USA')
      )
      ->addItem($this->goPayFactory->createItem()
        ->setName('laptop')
        ->setAmount(900, FALSE)
      )
      ->addItem($this->goPayFactory->createItem()
        ->setName('beer')
        ->setAmount(150)
      )
      ->setAmount(20150)
      ->setOrderNumber(123)
      ->setOrderDescription('description')
      ->setReturnUrl(Url::fromRoute(
        'my_module.gopay.test.result',
        [],
        [
          'absolute' => TRUE,
        ]
      )->toString()
      );

    return $pay_it->buildInlineForm();
  }
  
  /**
   * Test callback page to return from GoPay.
   */
  public function testCallbackResult(Request $request) {
    // GoPay return payment id in URL.
    $payment_id = $request->get('id');
    // Load payment status from GoPay.
    $payment_response = $this->goPayFactory->createResponseStatus($payment_id);
    if ($payment_response->isPaid()) {
      // Payment ok.
      drupal_set_message('Payment paid.');
    }
    else {
      // Payment error or canceled.
      $state = $payment_response->getState();
      drupal_set_message('Payment error: ' . GoPayState::getStateDescription($state), 'error');
    }
    return [
      '#markup' => 'Test payment callback result.',
    ];
  }
}

MyPurchaseController.php

<?php

namespace Drupal\my_module\Controller;

use Drupal\Core\Controller\ControllerBase;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Drupal\gopay\GoPayFactoryInterface;
use Drupal\Core\Url;
use Drupal\gopay\GoPayState;
use GoPay\Definition\Payment\Currency;
use Symfony\Component\HttpFoundation\Request;
use Drupal\gopay\Response\PaymentResponseInterface;


class MyPurchaseController extends ControllerBase {
  /**
   * GoPay Factory.
   *
   * @var \Drupal\gopay\GoPayFactoryInterface
   */
  protected $goPayFactory;

  public function __construct(GoPayFactoryInterface $go_pay_factory) {
    $this->goPayFactory = $go_pay_factory;
  }

  public static function create(ContainerInterface $container) {
    return new static(
      $container->get('gopay.factory')
    );
  }
  
  // Method testCallback goes here.
  
  // Method testCallbackResult goes here.
}

testCallback.php

<?php

/**
 * Test callback page for GoPay.
 */
public function testCallback() {
  $pay_it = $this->goPayFactory->createStandardPayment()
    ->setCurrency(Currency::EUROS)
    ->setDefaultPaymentInstrument(PaymentInstrument::PAYMENT_CARD)
    ->setAllowedPaymentInstruments([PaymentInstrument::PAYMENT_CARD, PaymentInstrument::BANK_ACCOUNT])
    ->setContact($this->goPayFactory->createContact()
      ->setFirstName('John')
      ->setLastName('Smith')
      ->setEmail('jsmith@gmail.com')
      ->setCity('City')
      ->setPhoneNumber(123456)
      ->setStreet('Main 1')
      ->setPostalCode(13)
      ->setCountryCode('USA')
    )
    ->addItem($this->goPayFactory->createItem()
      ->setName('laptop')
      ->setAmount(900, FALSE)
    )
    ->addItem($this->goPayFactory->createItem()
      ->setName('beer')
      ->setAmount(150)
    )
    ->setAmount(20150)
    ->setOrderNumber(123)
    ->setOrderDescription('description')
    ->setReturnUrl(Url::fromRoute(
      'my_module.gopay.test.result',
      [],
      [
        'absolute' => TRUE,
      ]
    )->toString()
    );

  return $pay_it->buildInlineForm();
}

testCallbackResult.php

<?php  

/**
 * Test callback page to return from GoPay.
 */
public function testCallbackResult(Request $request) {
  // GoPay return payment id in URL.
  $payment_id = $request->get('id');

  // Load payment status from GoPay.
  $payment_response = $this->goPayFactory->createResponseStatus($payment_id);

  if ($payment_response->isPaid()) {
    // Payment ok.
    drupal_set_message('Payment paid.');
  }
  else {
    // Payment error or canceled.
    $state = $payment_response->getState();
    drupal_set_message('Payment error: ' . GoPayState::getStateDescription($state), 'error');
  }

  return [
    '#markup' => 'Test payment callback result.',
  ];
}