From cf9bae8cad585ae42b16191123de809bc57743f7 Mon Sep 17 00:00:00 2001
From: Awawa <69086569+awawa-dev@users.noreply.github.com>
Date: Thu, 2 Jan 2025 02:02:22 +0100
Subject: [PATCH] Zigbee2mqtt: remove dynamic brightness to reduce
 communication load

---
 include/led-drivers/net/DriverNetZigbee2mqtt.h |  9 ++-------
 .../led-drivers/net/DriverNetZigbee2mqtt.cpp   | 18 ++++++++++++------
 .../schemas/schema-zigbee2mqtt.json            |  4 ++--
 3 files changed, 16 insertions(+), 15 deletions(-)

diff --git a/include/led-drivers/net/DriverNetZigbee2mqtt.h b/include/led-drivers/net/DriverNetZigbee2mqtt.h
index b2db5467..49af9700 100644
--- a/include/led-drivers/net/DriverNetZigbee2mqtt.h
+++ b/include/led-drivers/net/DriverNetZigbee2mqtt.h
@@ -7,11 +7,8 @@
 	#include <list>
 	#include <atomic>
 	#include <chrono>
-	#include <mutex>
 #endif
 
-#include <condition_variable>
-
 #include <led-drivers/LedDevice.h>
 #include <linalg.h>
 
@@ -24,7 +21,7 @@ class DriverNetZigbee2mqtt : public LedDevice
 	struct Zigbee2mqttInstance
 	{
 		int transition;
-		int constantBrightness;
+		int constantBrightness = -1;
 
 		std::list<Zigbee2mqttLamp> lamps;
 	};
@@ -35,6 +32,7 @@ class DriverNetZigbee2mqtt : public LedDevice
 
 		QString name;
 		Mode colorModel;
+		int currentBrightness;
 	};
 
 public:
@@ -63,9 +61,6 @@ public slots:
 	QString				_discoveryMessage;
 	int					_mqttId;
 
-	std::mutex				_mtx;
-	std::condition_variable	_cv;
-
 	static int mqttId;
 	static bool isRegistered;
 };
diff --git a/sources/led-drivers/net/DriverNetZigbee2mqtt.cpp b/sources/led-drivers/net/DriverNetZigbee2mqtt.cpp
index eacb1b42..d870bbe5 100644
--- a/sources/led-drivers/net/DriverNetZigbee2mqtt.cpp
+++ b/sources/led-drivers/net/DriverNetZigbee2mqtt.cpp
@@ -27,9 +27,13 @@ bool DriverNetZigbee2mqtt::init(const QJsonObject& deviceConfig)
 
 	if (LedDevice::init(deviceConfig))
 	{
+		if (_zigInstance.constantBrightness < 0)
+		{
+			QThread::msleep(750);
+		}
 
 		_zigInstance.transition = deviceConfig["transition"].toInt(0);
-		_zigInstance.constantBrightness = deviceConfig["constantBrightness"].toInt(0);
+		_zigInstance.constantBrightness = deviceConfig["constantBrightness"].toInt(1);
 		
 		Debug(_log, "Transition (ms)       : %s", (_zigInstance.transition > 0) ? QSTRING_CSTR(QString::number(_zigInstance.transition)) : "disabled" );
 		Debug(_log, "ConstantBrightness    : %s", (_zigInstance.constantBrightness > 0) ? QSTRING_CSTR(QString::number(_zigInstance.constantBrightness)) : "disabled");
@@ -117,7 +121,7 @@ int DriverNetZigbee2mqtt::write(const std::vector<ColorRgb>& ledValues)
 	auto start = InternalClock::nowPrecise();
 
 	auto rgb = ledValues.begin();
-	for (const auto& lamp : _zigInstance.lamps)
+	for (auto& lamp : _zigInstance.lamps)
 		if (rgb != ledValues.end())
 		{
 			QJsonObject row;
@@ -148,12 +152,14 @@ int DriverNetZigbee2mqtt::write(const std::vector<ColorRgb>& ledValues)
 				brightness = std::min(std::max(static_cast<int>(std::roundl(v * 255.0)), 0), 255);
 			}
 
-			if (brightness > 0 && _zigInstance.constantBrightness > 0)
+			if (lamp.currentBrightness <= 0 && brightness > 0)
 			{
-				brightness = _zigInstance.constantBrightness;
+				row["brightness"] = lamp.currentBrightness = _zigInstance.constantBrightness;
+			}
+			else if (lamp.currentBrightness > 0 && brightness == 0)
+			{
+				row["brightness"] = lamp.currentBrightness = 0;
 			}
-			
-			row["brightness"] = brightness;
 
 			doc.setObject(row);
 			emit GlobalSignals::getInstance()->SignalMqttPublish(topic, doc.toJson(QJsonDocument::Compact));
diff --git a/sources/led-drivers/schemas/schema-zigbee2mqtt.json b/sources/led-drivers/schemas/schema-zigbee2mqtt.json
index 9841edfe..022c23e8 100644
--- a/sources/led-drivers/schemas/schema-zigbee2mqtt.json
+++ b/sources/led-drivers/schemas/schema-zigbee2mqtt.json
@@ -15,8 +15,8 @@
 		"constantBrightness": {
 			"type": "integer",
 			"title": "edt_dev_spec_constantBrightness_title",
-			"default": 0,
-			"minimum": 0,
+			"default": 255,
+			"minimum": 1,
 			"maximum": 255,
 			"required": true,
 			"propertyOrder": 4