FIX: [hue] proper save state

CHANGELOG.md

@@ -31,6 +31,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Change links from http to https (#1067)
 
 ### Fixed
+- Properly save Hue light state between sessions (#1014)
 - AVAHI included in Webserver (#996)
 - Also allow an 8-LED configuration when using Karatelight (#1037)
 - Fix #1007 - LED's retain last state after clearing a source (#1008) 
@@ -42,6 +43,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fix typos (#1051)
 - Fix Python reset thread state
 
+
 ### Removed
 - Replace Multi-Lightpack by multi-instance Lightpack configuration (#1049)
 

libsrc/leddevice/dev_net/LedDevicePhilipsHue.cpp

@@ -419,13 +419,7 @@ void LedDevicePhilipsHueBridge::log(const char* msg, const char* type, ...) cons
 
 QJsonDocument LedDevicePhilipsHueBridge::getAllBridgeInfos()
 {
-	// Read Groups/ Lights and Light-Ids
-	_restApi->setPath(API_ROOT);
-
-	httpResponse response = _restApi->get();
-	checkApiError(response.getBody());
-
-	return response.getBody();
+	return get(API_ROOT);
 }
 
 bool LedDevicePhilipsHueBridge::initMaps()
@@ -628,6 +622,15 @@ bool LedDevicePhilipsHueBridge::checkApiError(const QJsonDocument &response)
 	return apiError;
 }
 
+QJsonDocument LedDevicePhilipsHueBridge::get(const QString& route)
+{
+	_restApi->setPath(route);
+
+	httpResponse response = _restApi->get();
+	checkApiError(response.getBody());
+	return response.getBody();
+}
+
 QJsonDocument LedDevicePhilipsHueBridge::post(const QString& route, const QString& content)
 {
 	_restApi->setPath(route);
@@ -637,6 +640,12 @@ QJsonDocument LedDevicePhilipsHueBridge::post(const QString& route, const QStrin
 	return response.getBody();
 }
 
+QJsonDocument LedDevicePhilipsHueBridge::getLightState(unsigned int lightId)
+{
+	DebugIf( verbose, _log, "GetLightState [%u]", lightId );
+	return get( QString("%1/%2").arg( API_LIGHTS ).arg( lightId ) );
+}
+
 void LedDevicePhilipsHueBridge::setLightState(unsigned int lightId, const QString &state)
 {
 	DebugIf( verbose, _log, "SetLightState [%u]: %s", lightId, QSTRING_CSTR(state) );
@@ -645,10 +654,8 @@ void LedDevicePhilipsHueBridge::setLightState(unsigned int lightId, const QStrin
 
 QJsonDocument LedDevicePhilipsHueBridge::getGroupState(unsigned int groupId)
 {
-	_restApi->setPath( QString("%1/%2").arg( API_GROUPS ).arg( groupId ) );
-	httpResponse response = _restApi->get();
-	checkApiError(response.getBody());
-	return response.getBody();
+	DebugIf( verbose, _log, "GetGroupState [%u]", groupId );
+	return get( QString("%1/%2").arg( API_GROUPS ).arg( groupId ) );
 }
 
 QJsonDocument LedDevicePhilipsHueBridge::setGroupState(unsigned int groupId, bool state)
@@ -712,8 +719,6 @@ PhilipsHueLight::PhilipsHueLight(Logger* log, unsigned int id, QJsonObject value
 		_colorBlack 		= {0.0, 0.0, 0.0};
 	}
 
-	saveOriginalState(values);
-
 	_lightname = values["name"].toString().trimmed().replace("\"", "");
 	Info(_log, "Light ID %d (\"%s\", LED index \"%d\") created", id, QSTRING_CSTR(_lightname), ledidx );
 }
@@ -806,7 +811,6 @@ LedDevicePhilipsHue::LedDevicePhilipsHue(const QJsonObject& deviceConfig)
 	  , _switchOffOnBlack(false)
 	  , _brightnessFactor(1.0)
 	  , _transitionTime(1)
-	  , _lightStatesRestored(false)
 	  , _isInitLeds(false)
 	  , _lightsCount(0)
 	  , _groupId(0)
@@ -1277,42 +1281,54 @@ void LedDevicePhilipsHue::stop()
 }
 
 int LedDevicePhilipsHue::open()
+{
+	int retval = 0;
+	_isDeviceReady = true;
+
+	return retval;
+}
+
+int LedDevicePhilipsHue::close()
 {
 	int retval = -1;
-	_isDeviceReady = false;
 
-	if( _useHueEntertainmentAPI )
+	retval = LedDevicePhilipsHueBridge::close();
+
+	return retval;
+}
+
+bool LedDevicePhilipsHue::switchOn()
 	{
-		if ( openStream() )
+	Debug(_log, "");
+
+	bool rc = false;
+
+	if ( _isOn )
 		{
-			// Everything is OK, device is ready
-			_isDeviceReady = true;
-			retval = 0;
+		rc = true;
 		}
 		else
 		{
-			// TODO: Stop device (or fallback to classic mode) - suggest to stop device to meet user expectation
-			//_useHueEntertainmentAPI = false; -to be removed, if 1
-			// Everything is OK, device is ready
+		if ( _isEnabled && _isDeviceInitialised )
+		{
+			storeState();
+
+			if ( _useHueEntertainmentAPI)
+			{
+				if ( openStream() )
+				{
+					_isOn = true;
+					rc = true;
 		}
 	}
-	else
+			else if ( powerOn() )
 	{
-		// Classic mode, everything is OK, device is ready
-		_isDeviceReady = true;
-		retval = 0;
+				_isOn = true;
+				rc = true;
+			}
 	}
-
-	return retval;
 }
-
-int LedDevicePhilipsHue::close()
-{
-	int retval = -1;
-
-	retval = LedDevicePhilipsHueBridge::close();
-
-	return retval;
+	return rc;
 }
 
 bool LedDevicePhilipsHue::switchOff()
@@ -1322,7 +1338,10 @@ bool LedDevicePhilipsHue::switchOff()
 	this->stopBlackTimeoutTimer();
 
 	stop_retry_left = 3;
+	if (_useHueEntertainmentAPI)
+	{
 	stopStream();
+	}
 
 	return LedDevicePhilipsHueBridge::switchOff();
 }
@@ -1563,11 +1582,14 @@ bool LedDevicePhilipsHue::storeState()
 
 	if ( _isRestoreOrigState )
 	{
-		// Save device's original state
-		//_orignalStateValues = get device's state;
-
-		// TODO: Move saveOriginalState out of the HueLight constructor,
-		// as the light state may have change since last close and needs to be stored again before reopen
+		if( !_lightIds.empty() )
+		{
+			for ( PhilipsHueLight& light : _lights )
+			{
+				QJsonObject values = getLightState(light.getId()).object();
+				light.saveOriginalState(values);
+			}
+		}
 	}
 
 	return rc;
@@ -1577,11 +1599,9 @@ bool LedDevicePhilipsHue::restoreState()
 {
 	bool rc = true;
 
-	if ( _isRestoreOrigState && !_lightStatesRestored )
+	if ( _isRestoreOrigState )
 	{
 		// Restore device's original state
-		_lightStatesRestored = true;
-
 		if( !_lightIds.empty() )
 		{
 			for ( PhilipsHueLight& light : _lights )

libsrc/leddevice/dev_net/LedDevicePhilipsHue.h

@@ -152,12 +152,11 @@ class PhilipsHueLight
 	/// @return the color space of the light determined by the model id reported by the bridge.
 	CiColorTriangle getColorSpace() const;
 
+	void saveOriginalState(const QJsonObject& values);
 	QString getOriginalState() const;
 
 private:
 
-	void saveOriginalState(const QJsonObject& values);
-
 	Logger* _log;
 	/// light id
 	unsigned int _id;
@@ -200,12 +199,23 @@ class LedDevicePhilipsHueBridge : public ProviderUdpSSL
 	bool initRestAPI(const QString &hostname, int port, const QString &token );
 
 	///
-	/// @param route the route of the POST request.
+	/// @brief Perform a REST-API GET
+	///
+	/// @param route the route of the GET request.
 	///
+	/// @return the content of the GET request.
+	///
+	QJsonDocument get(const QString& route);
+
+	///
+	/// @brief Perform a REST-API POST
+	///
+	/// @param route the route of the POST request.
 	/// @param content the content of the POST request.
 	///
 	QJsonDocument post(const QString& route, const QString& content);
 
+	QJsonDocument getLightState(unsigned int lightId);
 	void setLightState(unsigned int lightId = 0, const QString &state = "");
 
 	QMap<quint16,QJsonObject> getLightMap() const;
@@ -421,7 +431,7 @@ public slots:
 	///
 	/// @return True if success
 	///
-	//bool switchOn() override;
+	bool switchOn() override;
 
 	///
 	/// @brief Switch the LEDs off.
@@ -525,7 +535,6 @@ private slots:
 	/// The default of the Hue lights is 400 ms, but we may want it snappier.
 	int _transitionTime;
 
-	bool _lightStatesRestored;
 	bool _isInitLeds;
 
 	/// Array of the light ids.