payment button connected

frontend/pshared/lib/service/payment/service.dart

@@ -0,0 +1,36 @@
+import 'package:logging/logging.dart';
+
+import 'package:uuid/uuid.dart';
+
+import 'package:pshared/api/requests/payment/initiate.dart';
+import 'package:pshared/api/responses/payment/payment.dart';
+import 'package:pshared/data/mapper/payment/payment_response.dart';
+import 'package:pshared/models/payment/payment.dart';
+import 'package:pshared/service/authorization/service.dart';
+import 'package:pshared/service/services.dart';
+
+
+class PaymentService {
+  static final _logger = Logger('service.payment');
+  static const String _objectType = Services.payments;
+
+  static Future<Payment> pay(
+    String organizationRef,
+    String quotationRef, {
+    String? idempotencyKey,
+    Map<String, String>? metadata,
+  }) async {
+    _logger.fine('Executing payment for quotation $quotationRef in $organizationRef');
+    final request = InitiatePaymentRequest(
+      idempotencyKey: idempotencyKey ?? Uuid().v4(),
+      quoteRef: quotationRef,
+      metadata: metadata,
+    );
+    final response = await AuthorizationService.getPOSTResponse(
+      _objectType, 
+      '/by-quote/$organizationRef', 
+      request.toJson(),
+    );
+    return PaymentResponse.fromJson(response).payment.toDomain();
+  }  
+}