fix: add OpenCryptoPay request handling to SendViewModel (#3105)

lib/new-ui/pages/send_page.dart

@@ -62,7 +62,6 @@ import 'package:cw_core/unspent_coin_type.dart';
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_mobx/flutter_mobx.dart';
-import 'package:flutter_svg/svg.dart';
 import 'package:mobx/mobx.dart';
 import 'package:modal_bottom_sheet/modal_bottom_sheet.dart';
 
@@ -838,7 +837,9 @@ class _NewSendPageState extends State<NewSendPage> {
 
     if (OpenCryptoPayService.isOpenCryptoPayQR(uri) &&
         widget.sendViewModel.selectedCryptoCurrency != CryptoCurrency.btcln) {
-      widget.sendViewModel.createOpenCryptoPayTransaction(uri);
+      final request = await widget.sendViewModel.getOpenCryptoPayRequest(uri);
+      if (request == null) return;
+      _applyPaymentRequest(request);
       return;
     }
 

lib/view_model/send/send_view_model.dart

@@ -529,6 +529,33 @@ abstract class SendViewModelBase extends WalletChangeListenerViewModel with Stor
     }
   }
 
+  @action
+  Future<PaymentRequest?> getOpenCryptoPayRequest(String uri) async {
+    try {
+      final originalOCPRequest = await _ocpService.getOpenCryptoPayInvoice(uri.toString());
+      final paymentUri = await _ocpService.getOpenCryptoPayAddress(
+        originalOCPRequest,
+        selectedCryptoCurrency,
+      );
+
+      ocpRequest = originalOCPRequest;
+
+      clearOutputs();
+      return PaymentRequest.fromUri(paymentUri);
+    } on OpenCryptoPayNotSupportedException catch (e) {
+      printV(e.message);
+      if (walletType == WalletType.bitcoin) {
+        state = InitialExecutionState();
+      } else {
+        state = FailureState(translateErrorMessage(e, walletType, currency));
+      }
+    } catch (e) {
+      printV(e);
+      state = FailureState(translateErrorMessage(e, walletType, currency));
+    }
+    return null;
+  }
+
   @action
   Future<PendingTransaction?> createOpenCryptoPayTransaction(String uri) async {
     state = IsExecutingState();