feat(topup): add payment_type field and update AdminTopupCreateView to handle payment type ✨

billing/views.py

@@ -624,14 +624,16 @@ class AdminTopupCreateView(StaffEditorPermissionMixin, generics.CreateAPIView):
                 {"message": "User not found."},
                 status=status.HTTP_404_NOT_FOUND,
             )
-        topup = Topup.objects.create(amount=amount, user=user)
-        description = f"Topup of {amount} MVR (Cash)"
-        WalletTransaction.objects.create(
-            user=user,
+        topup = Topup.objects.create(
             amount=amount,
-            transaction_type="TOPUP",
-            description=description,
+            user=user,
+            paid=True,
+            paid_at=timezone.now(),
+            payment_type="CASH",
+            status="PAID",
         )
+        description = f"Topup of {amount} MVR (Cash)"
+        user.add_wallet_funds(amount, description, topup.id)
         serializer = TopupSerializer(topup)
         return Response(serializer.data, status=status.HTTP_201_CREATED)