usability fixes

lib/screens/pay/pay_controller.dart

@@ -35,6 +35,7 @@ abstract class PaymentProcessor with _$PaymentProcessor {
     required String accountFieldName,
     required String accountFieldLabel,
     required String label,
+    required String currency,
     required String authType,
   }) = _PaymentProcessor;
 
@@ -176,15 +177,22 @@ class PayController extends ChangeNotifier {
     }
   }
 
-  Future<ApiResponse<List<PaymentProcessor>>> getPaymentProcessors() async {
+  Future<ApiResponse<List<PaymentProcessor>>> getPaymentProcessors(
+    String currency,
+  ) async {
     try {
       model.isLoading = true;
       model.paymentProcessors = getFakePaymentProcessors();
       notifyListeners();
 
-      List<dynamic> response = await http.get('/public/payment-processors');
-      model.paymentProcessors = response
-          .map((e) => PaymentProcessor.fromJson(e))
+      final response = await http.get(
+        '/public/payment-processors?currency=$currency',
+      );
+      final List<dynamic> content = response is List
+          ? response
+          : (response['content'] ?? []);
+      model.paymentProcessors = content
+          .map((e) => PaymentProcessor.fromJson(e as Map<String, dynamic>))
           .toList();
 
       model.isLoading = false;
@@ -238,6 +246,7 @@ class PayController extends ChangeNotifier {
         accountFieldLabel: "EcoCash Phone Number",
         label: "ECOCASH",
         authType: "REMOTE",
+        currency: "USD",
       ),
     ];
   }