From 5509d08e2c64a02b46db72986bf65540afb8912b Mon Sep 17 00:00:00 2001
From: J-N-K <J-N-K@users.noreply.github.com>
Date: Fri, 29 Jan 2021 09:59:20 +0100
Subject: [PATCH] [http] Fix duplicate commands on PlayerItemConverter (#9981)

Fixes #9957

Signed-off-by: Jan N. Klug <jan.n.klug@rub.de>
---
 .../http/internal/converter/PlayerItemConverter.java       | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/bundles/org.openhab.binding.http/src/main/java/org/openhab/binding/http/internal/converter/PlayerItemConverter.java b/bundles/org.openhab.binding.http/src/main/java/org/openhab/binding/http/internal/converter/PlayerItemConverter.java
index 6ef676257bf2c..eb2ad57b3bc8d 100644
--- a/bundles/org.openhab.binding.http/src/main/java/org/openhab/binding/http/internal/converter/PlayerItemConverter.java
+++ b/bundles/org.openhab.binding.http/src/main/java/org/openhab/binding/http/internal/converter/PlayerItemConverter.java
@@ -35,6 +35,7 @@
 @NonNullByDefault
 public class PlayerItemConverter extends AbstractTransformingItemConverter {
     private final HttpChannelConfig channelConfig;
+    private @Nullable String lastCommand; // store last command to prevent duplicate commands
 
     public PlayerItemConverter(Consumer<State> updateState, Consumer<Command> postCommand,
             @Nullable Consumer<String> sendHttpValue, ValueTransformation stateTransformations,
@@ -55,6 +56,12 @@ public String toString(Command command) {
 
     @Override
     protected @Nullable Command toCommand(String string) {
+        if (string.equals(lastCommand)) {
+            // only send commands once
+            return null;
+        }
+        lastCommand = string;
+
         if (string.equals(channelConfig.playValue)) {
             return PlayPauseType.PLAY;
         } else if (string.equals(channelConfig.pauseValue)) {