From b058b6aee0d8d059ed8038cf32ee06d755de8a1a Mon Sep 17 00:00:00 2001
From: Siegfried Siegert <s.siegert@atb-online.eu>
Date: Thu, 25 Jan 2024 14:26:19 +0100
Subject: [PATCH] Changer: skip polling, if amount due to change is 0

---
 src/ATBAPP/ATBDeviceControllerPlugin.cpp | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/ATBAPP/ATBDeviceControllerPlugin.cpp b/src/ATBAPP/ATBDeviceControllerPlugin.cpp
index bdabaeb..706b984 100644
--- a/src/ATBAPP/ATBDeviceControllerPlugin.cpp
+++ b/src/ATBAPP/ATBDeviceControllerPlugin.cpp
@@ -1105,10 +1105,24 @@ void ATBDeviceControllerPlugin::onCashChangerState()
         amountCoinsChangedInt = amountInt - this->cashStartAmountInt;
     }
     else {
-        amountCoinsChangedInt = 0;
+        amountCoinsChangedInt = 0; 
     }
     QString amountCoinsChangedString = QString::number(amountCoinsChangedInt);
 
+    // if we do not need to give change:
+    if (amountCoinsChangedInt == 0) {
+        emit this->cashPaymentFinished(nsDeviceControllerInterface::RESULT_STATE::SUCCESS,
+                                  amountString,
+                                  amountCoinsString,        // coins
+                                  amountNotesString,        // notes
+                                  amountCoinsChangedString, // change
+                                  "",
+                                  "");
+        changerStateRequestCounter = 0;
+        lastChangerResult = 0;
+        return;
+    }
+
 
     // get changer state ------------------------------------------------
     // Note: 'returnedAmount'-parameter is missleading here!