datatrans-payments-api-intergration.php

<?php

/**
 * Datatrans class for payments.
 *
 * https://docs.datatrans.ch/docs
 * https://admin.sandbox.datatrans.com/
 * https://testaccount.datatrans.com/testaccounts
 *
 * Class PE_Datatrans
 */
class PE_Datatrans {
    
	public function __construct() {
	      $this->merchantId =  'use-your-merchantId'; // get_option('_pe_dt_merchantId');
	      $this->password = 'use-your-password'; // get_option('_pe_dt_password');
	      $this->refno = rand(5, 10);
	}

	// Use this endpoint, if you want ot use the Redirect and the Lightbox integration
	public function initializeTransaction($amount) {

	      $url = 'https://api.sandbox.datatrans.com/v1/transactions';

	      $postFields = json_encode( array(
		  'amount' => $amount,
		  'currency'  => "CHF",
		  'refno' => $this->refno,
		  'redirect' => [
		    'successUrl' => 'once-the-user-pays-and-it-is-a-success',
		    "cancelUrl" => "canceled-payment",
		    "errorUrl" => "transaction-error"
		  ],
		  // if you have a registration form you can use these fields as well
		  'cusotmer' => [
		      'title' => 'Mr.' // string,
		      'firstName' => 'Projects' // string 
		      'lastName' => 'Engine', // string etc.
		  ],
	      ) );

	      $ch = curl_init();
	      curl_setopt($ch, CURLOPT_URL, $url);
	      curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	      curl_setopt($ch, CURLOPT_POST, 1);
	      curl_setopt($ch, CURLOPT_POSTFIELDS, $postFields);
	      curl_setopt($ch, CURLOPT_USERPWD, $this->merchantId . ':' . $this->password);
	      curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/json; charset=UTF-8']);

	      $data = json_decode(curl_exec($ch));
	      $result = $data->transactionId;

	      if (curl_errno($ch)) {
		$result = 'Error: ' . curl_error($ch);
	      }

	      curl_close($ch);

	      return $result;
	}

	// If you are using the SecureFields integration, use this endpoint to get the transactionId
	public function initializeTransactionWithSecureFields($amount) {
	      $url = 'https://api.sandbox.datatrans.com/v1/transactions/secureFields';

	      $postFields = json_encode( array(
		  'amount' => $amount,
		  'currency'  => "CHF",
		  'returnUrl' => '/datatrans-payment/',
	      ) );

	      $ch = curl_init();
	      curl_setopt($ch, CURLOPT_URL, $url);
	      curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	      curl_setopt($ch, CURLOPT_POST, 1);
	      curl_setopt($ch, CURLOPT_POSTFIELDS, $postFields);
	      curl_setopt($ch, CURLOPT_USERPWD, $this->merchantId . ':' . $this->password);
	      curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/json; charset=UTF-8']);

	      $data = json_decode(curl_exec($ch));
	      $result = $data->transactionId;

	      if (curl_errno($ch)) {
		$result = 'Error: ' . curl_error($ch);
	      }

	      curl_close($ch);

	      return $result;
	}

	// If you are using the SecureFields integrration you need to authorize the transaction
	// Use this API endpoint to do that
	// Use the same amount and refno
	// The amount should be decimal number without the comma
	// for example 60.00 should be 6000

	public function authorizeAuthenticatedTransaction($amount, $transactionId) {
	      $url = 'https://api.sandbox.datatrans.com/v1/transactions/' . $transactionId . '/authorize';

	      $postFields = json_encode( array(
		  'refno' => $this->refno,
		  'amount' => $amount,
		  'autoSettle' => true
	      ) );

	      $ch = curl_init();
	      curl_setopt($ch, CURLOPT_URL, $url);
	      curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	      curl_setopt($ch, CURLOPT_POST, 1);
	      curl_setopt($ch, CURLOPT_USERPWD, $this->merchantId . ':' . $this->password);
	      curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/json; charset=UTF-8']);
	      curl_setopt($ch, CURLOPT_POSTFIELDS, $postFields);

	      $data = json_decode(curl_exec($ch));
	      curl_close($ch);

	      return $data;
	}
	
	/**
	 * Check the status of the transaction.
	 *
	 * @param $transactionId
	 * @return mixed
	 */
   	 public function checkingTheStatusOfATransaction($transactionId) {
	    $ch = curl_init();
	    curl_setopt($ch, CURLOPT_URL, 'https://api.sandbox.datatrans.com/v1/transactions/' . $transactionId);
	    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
	    curl_setopt($ch, CURLOPT_USERPWD, $this->merchantId . ':' . $this->password);

	    $result = curl_exec($ch);
	    $data = json_decode( $result );

	    if (curl_errno($ch)) {
		    echo 'Error:' . curl_error($ch);
	    }

	    curl_close($ch);

	    return $data;
	}
	
	// Remove the sandbox. once you are done with testing and your sure your code is good.
	
}

new PE_Datatrans;