Simple Example

1. Initialize WDClient instance

   - (void)makeCardPayment
   {
       // it is better to keep client as property to keep reference
       WDClient *client = [[WDClient alloc] initWithEnvironment:WDEnvironmentTEST];

2. Initialize WDCardPayment instance

   WDCardPayment *payment = [[WDCardPayment alloc] initWithAmount:[NSDecimalNumber decimalNumberWithMantissa:1275 exponent:-2 isNegative:NO]
                                                   amountCurrency:WDCurrencyEUR
                                                  transactionType:WDTransactionTypePurchase];

3. Generate requestID, requestTimestamp and requestSignature on your server and assign them to WDCardPayment object

   payment.merchantAccountID = merchantAccountID;   // provided by support
   payment.requestID = [[NSUUID UUID] UUIDString];  // generated on server unique to merchant
   payment.requestTimestamp = [NSDate date];        // generated on server
   payment.requestSignature = signature;            // generated on server

4. Create WDCompletionBlock to handle response

   WDCompletionBlock completionBlock = ^(WDPaymentResponse *_Nullable response, NSError *_Nullable error) {
       if (error) {
           IPLogError(@"error: %@", error);
           UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Error"
                                                               message:error.localizedDescription
                                                              delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
           [alertView show];
           return;
       }
       // handle successful response
   };

5. Trigger the payment

       [client makePayment:payment withCompletion:completionBlock];
   }