hyperion.ng/libsrc/leddevice/dev_net/LedDevicePhilipsHue.cpp

// Local-Hyperion includes
#include "LedDevicePhilipsHue.h"

#include <chrono>

#include <ssdp/SSDPDiscover.h>
#include <utils/QStringUtils.h>

// mDNS discover
#ifdef ENABLE_MDNS
#include <mdns/MdnsBrowser.h>
#include <mdns/MdnsServiceRegister.h>
#endif
#include <utils/NetUtils.h>

// Constants
namespace {

bool verbose = false;

// Configuration settings
const char CONFIG_HOST[] = "host";
const char CONFIG_PORT[] = "port";
const char CONFIG_USERNAME[] = "username";
const char CONFIG_CLIENTKEY[] = "clientkey";
const char CONFIG_BRIGHTNESSFACTOR[] = "brightnessFactor";
const char CONFIG_TRANSITIONTIME[] = "transitiontime";
const char CONFIG_BLACK_LIGHTS_TIMEOUT[] = "blackLightsTimeout";
const char CONFIG_ON_OFF_BLACK[] = "switchOffOnBlack";
const char CONFIG_RESTORE_STATE[] = "restoreOriginalState";
const char CONFIG_LIGHTIDS[] = "lightIds";
const char CONFIG_USE_HUE_ENTERTAINMENT_API[] = "useEntertainmentAPI";
const char CONFIG_GROUPID[] = "groupId";

const char CONFIG_VERBOSE[] = "verbose";

// Device Data elements
const char DEV_DATA_BRIDGEID[] = "bridgeid";
const char DEV_DATA_MODEL[] = "modelid";
const char DEV_DATA_NAME[] = "name";
//const char DEV_DATA_MANUFACTURER[] = "manufacturer";
const char DEV_DATA_FIRMWAREVERSION[] = "swversion";
const char DEV_DATA_APIVERSION[] = "apiversion";

// Philips Hue OpenAPI URLs
const int API_DEFAULT_PORT = -1; //Use default port per communication scheme
const char API_BASE_PATH[] = "/api/%1";
const char API_ROOT[] = "";
const char API_STATE[] = "state";
const char API_CONFIG[] = "config";
const char API_LIGHTS[] = "lights";
const char API_GROUPS[] = "groups";

// List of Group / Stream Information
const char API_GROUP_NAME[] = "name";
const char API_GROUP_TYPE[] = "type";
const char API_GROUP_TYPE_ENTERTAINMENT[] = "Entertainment";
const char API_STREAM[] = "stream";
const char API_STREAM_ACTIVE[] = "active";
const char API_STREAM_ACTIVE_VALUE_TRUE[] = "true";
const char API_STREAM_ACTIVE_VALUE_FALSE[] = "false";
const char API_STREAM_OWNER[] = "owner";
const char API_STREAM_RESPONSE_FORMAT[] = "/%1/%2/%3/%4";

// List of resources
const char API_XY_COORDINATES[] = "xy";
const char API_BRIGHTNESS[] = "bri";
//const char API_SATURATION[] = "sat";
const char API_TRANSITIONTIME[] = "transitiontime";
const char API_MODEID[] = "modelid";

// List of State Information
const char API_STATE_ON[] = "on";
const char API_STATE_VALUE_TRUE[] = "true";
const char API_STATE_VALUE_FALSE[] = "false";

// List of Error Information
const char API_ERROR[] = "error";
const char API_ERROR_ADDRESS[] = "address";
const char API_ERROR_DESCRIPTION[] = "description";
const char API_ERROR_TYPE[] = "type";

// List of Success Information
const char API_SUCCESS[] = "success";

// Phlips Hue ssdp services
const char SSDP_ID[] = "upnp:rootdevice";
const char SSDP_FILTER[] = "(.*)IpBridge(.*)";
const char SSDP_FILTER_HEADER[] = "SERVER";

// DTLS Connection / SSL / Cipher Suite
const char API_SSL_SERVER_NAME[] = "Hue";
const char API_SSL_SEED_CUSTOM[] = "dtls_client";
const int API_SSL_SERVER_PORT = 2100;
const int STREAM_CONNECTION_RETRYS = 20;
const int STREAM_SSL_HANDSHAKE_ATTEMPTS = 5;
const int SSL_CIPHERSUITES[2] = { MBEDTLS_TLS_PSK_WITH_AES_128_GCM_SHA256, 0 };

//Enable rewrites that Hue-Bridge does not close the connection ("After 10 seconds of no activity the connection is closed automatically, and status is set back to inactive.")
constexpr std::chrono::milliseconds STREAM_REWRITE_TIME{5000};

} //End of constants

bool operator ==(const CiColor& p1, const CiColor& p2)
{
	return ((p1.x == p2.x) && (p1.y == p2.y) && (p1.bri == p2.bri));
}

bool operator != (const CiColor& p1, const CiColor& p2)
{
	return !(p1 == p2);
}

CiColor CiColor::rgbToCiColor(double red, double green, double blue, const CiColorTriangle& colorSpace, bool candyGamma)
{
	double cx;
	double cy;
	double bri;

	if (red + green + blue > 0)
	{
		// Apply gamma correction.
		double r = red;
		double g = green;
		double b = blue;

		if (candyGamma)
		{
			r = (red > 0.04045) ? pow((red + 0.055) / (1.0 + 0.055), 2.4) : (red / 12.92);
			g = (green > 0.04045) ? pow((green + 0.055) / (1.0 + 0.055), 2.4) : (green / 12.92);
			b = (blue > 0.04045) ? pow((blue + 0.055) / (1.0 + 0.055), 2.4) : (blue / 12.92);
		}

		// Convert to XYZ space.
		double X = r * 0.664511 + g * 0.154324 + b * 0.162028;
		double Y = r * 0.283881 + g * 0.668433 + b * 0.047685;
		double Z = r * 0.000088 + g * 0.072310 + b * 0.986039;

		cx = X / (X + Y + Z);
		cy = Y / (X + Y + Z);

		// RGB to HSV/B Conversion before gamma correction V/B for brightness, not Y from XYZ Space.
		// bri = std::max(std::max(red, green), blue);
		// RGB to HSV/B Conversion after gamma correction V/B for brightness, not Y from XYZ Space.
		bri = std::max(r, std::max(g, b));
	}
	else
	{
		cx = 0.0;
		cy = 0.0;
		bri = 0.0;
	}

	if (std::isnan(cx))
	{
		cx = 0.0;
	}
	if (std::isnan(cy))
	{
		cy = 0.0;
	}
	if (std::isnan(bri))
	{
		bri = 0.0;
	}

	CiColor xy = { cx, cy, bri };

	if( (red + green + blue) > 0)
	{
		// Check if the given XY value is within the color reach of our lamps.
		if (!isPointInLampsReach(xy, colorSpace))
		{
			// It seems the color is out of reach let's find the closes color we can produce with our lamp and send this XY value out.
			XYColor pAB = getClosestPointToPoint(colorSpace.red, colorSpace.green, xy);
			XYColor pAC = getClosestPointToPoint(colorSpace.blue, colorSpace.red, xy);
			XYColor pBC = getClosestPointToPoint(colorSpace.green, colorSpace.blue, xy);
			// Get the distances per point and see which point is closer to our Point.
			double dAB = getDistanceBetweenTwoPoints(xy, pAB);
			double dAC = getDistanceBetweenTwoPoints(xy, pAC);
			double dBC = getDistanceBetweenTwoPoints(xy, pBC);
			double lowest = dAB;
			XYColor closestPoint = pAB;
			if (dAC < lowest)
			{
				lowest = dAC;
				closestPoint = pAC;
			}
			if (dBC < lowest)
			{
				//lowest = dBC;
				closestPoint = pBC;
			}
			// Change the xy value to a value which is within the reach of the lamp.
			xy.x = closestPoint.x;
			xy.y = closestPoint.y;
		}
	}
	return xy;
}

double CiColor::crossProduct(XYColor p1, XYColor p2)
{
	return p1.x * p2.y - p1.y * p2.x;
}

bool CiColor::isPointInLampsReach(CiColor p, const CiColorTriangle &colorSpace)
{
	bool rc = false;
	XYColor v1 = { colorSpace.green.x - colorSpace.red.x, colorSpace.green.y - colorSpace.red.y };
	XYColor v2 = { colorSpace.blue.x - colorSpace.red.x, colorSpace.blue.y - colorSpace.red.y };
	XYColor  q = { p.x - colorSpace.red.x, p.y - colorSpace.red.y };
	double s = crossProduct(q, v2) / crossProduct(v1, v2);
	double t = crossProduct(v1, q) / crossProduct(v1, v2);
	if ( ( s >= 0.0 ) && ( t >= 0.0 ) && ( s + t <= 1.0 ) )
	{
		rc =  true;
	}
	return rc;
}

XYColor CiColor::getClosestPointToPoint(XYColor a, XYColor b, CiColor p)
{
	XYColor AP = { p.x - a.x, p.y - a.y };
	XYColor AB = { b.x - a.x, b.y - a.y };
	double ab2 = AB.x * AB.x + AB.y * AB.y;
	double ap_ab = AP.x * AB.x + AP.y * AB.y;
	double t = ap_ab / ab2;
	if ( t < 0.0 )
	{
		t = 0.0;
	}
	else if ( t > 1.0 )
	{
		t = 1.0;
	}
	return { a.x + AB.x * t, a.y + AB.y * t };
}

double CiColor::getDistanceBetweenTwoPoints(CiColor p1, XYColor p2)
{
	// Horizontal difference.
	double dx = p1.x - p2.x;
	// Vertical difference.
	double dy = p1.y - p2.y;
	// Absolute value.
	return sqrt(dx * dx + dy * dy);
}

LedDevicePhilipsHueBridge::LedDevicePhilipsHueBridge(const QJsonObject &deviceConfig)
	: ProviderUdpSSL(deviceConfig)
	  , _restApi(nullptr)
	  , _apiPort(API_DEFAULT_PORT)
	  , _useHueEntertainmentAPI(false)
	  , _api_major(0)
	  , _api_minor(0)
	  , _api_patch(0)
	  , _isHueEntertainmentReady(false)
{
#ifdef ENABLE_MDNS
	QMetaObject::invokeMethod(&MdnsBrowser::getInstance(), "browseForServiceType",
		Qt::QueuedConnection, Q_ARG(QByteArray, MdnsServiceRegister::getServiceType(_activeDeviceType)));
#endif
}

LedDevicePhilipsHueBridge::~LedDevicePhilipsHueBridge()
{
	delete _restApi;
	_restApi = nullptr;
}

bool LedDevicePhilipsHueBridge::init(const QJsonObject &deviceConfig)
{
	DebugIf( verbose, _log, "deviceConfig: [%s]", QString(QJsonDocument(_devConfig).toJson(QJsonDocument::Compact)).toUtf8().constData() );

	bool isInitOK = false;

	//Set hostname as per configuration and default port
	_hostName = deviceConfig[CONFIG_HOST].toString();
	_apiPort = deviceConfig[CONFIG_PORT].toInt();
	_authToken = deviceConfig[CONFIG_USERNAME].toString();

	Debug(_log, "Hostname/IP: %s", QSTRING_CSTR(_hostName) );

	if( _useHueEntertainmentAPI )
	{
		setLatchTime( 0);
		_devConfig["sslport"]        = API_SSL_SERVER_PORT;
		_devConfig["servername"]     = API_SSL_SERVER_NAME;
		_devConfig["psk"]            = _devConfig[ CONFIG_CLIENTKEY ].toString();
		_devConfig["psk_identity"]   = _devConfig[ CONFIG_USERNAME ].toString();
		_devConfig["seed_custom"]    = API_SSL_SEED_CUSTOM;
		_devConfig["retry_left"]     = STREAM_CONNECTION_RETRYS;
		_devConfig["hs_attempts"]    = STREAM_SSL_HANDSHAKE_ATTEMPTS;
		_devConfig["hs_timeout_min"] = 600;
		_devConfig["hs_timeout_max"] = 1000;

		isInitOK = ProviderUdpSSL::init(_devConfig);
	}
	else
	{
		isInitOK = LedDevice::init(_devConfig); // NOLINT
	}

	return isInitOK;
}

bool LedDevicePhilipsHueBridge::openRestAPI()
{
	bool isInitOK {true};

	if (_restApi == nullptr)
	{
		_restApi = new ProviderRestApi(_address.toString(), _apiPort);
		_restApi->setLogger(_log);

		//Base-path is api-path + authentication token (here username)
		_restApi->setBasePath(QString(API_BASE_PATH).arg(_authToken));
	}
	else
	{
		_restApi->setHost(_address.toString());
		_restApi->setPort(_apiPort);
	}

	//Workaround until API v2 with https is supported
	if (_apiPort == 0 || _apiPort == 443)
	{
		_apiPort = API_DEFAULT_PORT;
		_restApi->setPort(_apiPort);
	}
	return isInitOK;
}

bool LedDevicePhilipsHueBridge::checkApiError(const QJsonDocument &response, bool supressError)
{
	bool apiError = false;
	QString errorReason;

	QString strJson(response.toJson(QJsonDocument::Compact));
	DebugIf(verbose, _log, "Reply: [%s]", strJson.toUtf8().constData());

	QVariantList rspList = response.toVariant().toList();
	if ( !rspList.isEmpty() )
	{
		QVariantMap map = rspList.first().toMap();
		if ( map.contains( API_ERROR ) )
		{
			// API call failed to execute an error message was returned
			QString errorAddress = map.value(API_ERROR).toMap().value(API_ERROR_ADDRESS).toString();
			QString errorDesc    = map.value(API_ERROR).toMap().value(API_ERROR_DESCRIPTION).toString();
			QString errorType    = map.value(API_ERROR).toMap().value(API_ERROR_TYPE).toString();

			log("Error Type", "%s", QSTRING_CSTR(errorType));
			log("Error Address", "%s", QSTRING_CSTR(errorAddress));
			log("Error Address Description", "%s", QSTRING_CSTR(errorDesc));

			if( errorType != "901" )
			{
				errorReason = QString ("(%1) %2, Resource:%3").arg(errorType, errorDesc, errorAddress);
				if (!supressError)
				{
					this->setInError(errorReason);
				}
				else
				{
					Warning(_log, "Suppresing error: %s", QSTRING_CSTR(errorReason));
				}
				apiError = true;
			}
		}
	}
	return apiError;
}

int LedDevicePhilipsHueBridge::open()
{
	int retval = -1;
	_isDeviceReady = false;

	if (NetUtils::resolveHostToAddress(_log, _hostName, _address, _apiPort))
	{
		if ( openRestAPI() )
		{
			if (initMaps())
			{
				if ( _useHueEntertainmentAPI )
				{
					// Open bridge for streaming
					if ( ProviderUdpSSL::open() == 0 )
					{
						// Everything is OK, device is ready
						_isDeviceReady = true;
						retval = 0;
					}
				}
				else
				{
					// Everything is OK, device is ready
					_isDeviceReady = true;
					retval = 0;
				}
			}
		}
	}

	return retval;
}

int LedDevicePhilipsHueBridge::close()
{
	_isDeviceReady = false;
	int retval = 0;

	if( _useHueEntertainmentAPI )
	{
		retval = ProviderUdpSSL::close();
	}

	return retval;
}

const int *LedDevicePhilipsHueBridge::getCiphersuites() const
{
	return SSL_CIPHERSUITES;
}

void LedDevicePhilipsHueBridge::log(const char* msg, const char* type, ...) const
{
	const size_t max_val_length = 1024;
	char val[max_val_length];
	va_list args;
	va_start(args, type);
	vsnprintf(val, max_val_length, type, args);
	va_end(args);
	std::string s = msg;
	size_t max = 30;
	if (max > s.length())
	{
		s.append(max - s.length(), ' ');
	}
	Debug( _log, "%s: %s", s.c_str(), val );
}

QJsonDocument LedDevicePhilipsHueBridge::getAllBridgeInfos()
{
	return get(API_ROOT);
}

bool LedDevicePhilipsHueBridge::initMaps()
{
	bool isInitOK = true;

	QJsonDocument doc = getAllBridgeInfos();

	DebugIf( verbose, _log, "doc: [%s]", QString(QJsonDocument(doc).toJson(QJsonDocument::Compact)).toUtf8().constData() );

	if (doc.isEmpty())
	{
		setInError("Could not read the Hue Bridge details");
	}

	if ( this->isInError() )
	{
		isInitOK = false;
	}
	else
	{
		setBridgeConfig( doc );
		if( _useHueEntertainmentAPI )
		{
			setGroupMap( doc );
		}
		setLightsMap( doc );
	}

	return isInitOK;
}

void LedDevicePhilipsHueBridge::setBridgeConfig(const QJsonDocument &doc)
{
	QJsonObject jsonConfigInfo = doc.object()[ API_CONFIG ].toObject();
	if ( verbose )
	{
		std::cout <<  "jsonConfigInfo: [" << QString(QJsonDocument(jsonConfigInfo).toJson(QJsonDocument::Compact)).toUtf8().constData() << "]" << std::endl;
	}

	QString deviceName = jsonConfigInfo[DEV_DATA_NAME].toString();
	_deviceModel = jsonConfigInfo[DEV_DATA_MODEL].toString();
	QString deviceBridgeID = jsonConfigInfo[DEV_DATA_BRIDGEID].toString();
	_deviceFirmwareVersion = jsonConfigInfo[DEV_DATA_FIRMWAREVERSION].toString();
	_deviceAPIVersion = jsonConfigInfo[DEV_DATA_APIVERSION].toString();

	QStringList apiVersionParts = QStringUtils::split(_deviceAPIVersion,".", QStringUtils::SplitBehavior::SkipEmptyParts);
	if ( !apiVersionParts.isEmpty() )
	{
		_api_major = apiVersionParts[0].toUInt();
		_api_minor = apiVersionParts[1].toUInt();
		_api_patch = apiVersionParts[2].toUInt();

		if ( _api_major > 1 || (_api_major == 1 && _api_minor >= 22) )
		{
			_isHueEntertainmentReady = true;
		}
	}

	if( _useHueEntertainmentAPI )
	{
		DebugIf( !_isHueEntertainmentReady, _log, "Bridge is not Entertainment API Ready - Entertainment API usage was disabled!" );
		_useHueEntertainmentAPI = _isHueEntertainmentReady;
	}

	log( "Bridge Name", "%s", QSTRING_CSTR( deviceName ));
	log( "Model", "%s", QSTRING_CSTR( _deviceModel ));
	log( "Bridge-ID", "%s", QSTRING_CSTR( deviceBridgeID ));
	log( "SoftwareVersion", "%s", QSTRING_CSTR( _deviceFirmwareVersion ));
	log( "API-Version", "%u.%u.%u", _api_major, _api_minor, _api_patch );
	log( "EntertainmentReady", "%d", static_cast<int>(_isHueEntertainmentReady) );
}

void LedDevicePhilipsHueBridge::setLightsMap(const QJsonDocument &doc)
{
	QJsonObject jsonLightsInfo = doc.object()[ API_LIGHTS ].toObject();

	DebugIf(verbose, _log, "jsonLightsInfo: [%s]", QString(QJsonDocument(jsonLightsInfo).toJson(QJsonDocument::Compact)).toUtf8().constData() );

	// Get all available light ids and their values
	QStringList keys = jsonLightsInfo.keys();

	_ledCount = static_cast<uint>(keys.size());
	_lightsMap.clear();

	for ( int i = 0; i < static_cast<int>(_ledCount); ++i )
	{
		_lightsMap.insert(keys.at(i).toUShort(), jsonLightsInfo.take(keys.at(i)).toObject());
	}

	if ( getLedCount() == 0 )
	{
		this->setInError( "No light-IDs found at the Philips Hue Bridge" );
	}
	else
	{
		log( "Lights in Bridge found", "%d", getLedCount() );
	}
}

void LedDevicePhilipsHueBridge::setGroupMap(const QJsonDocument &doc)
{
	QJsonObject jsonGroupsInfo = doc.object()[ API_GROUPS ].toObject();

	DebugIf(verbose, _log, "jsonGroupsInfo: [%s]", QString(QJsonDocument(jsonGroupsInfo).toJson(QJsonDocument::Compact)).toUtf8().constData() );

	// Get all available group ids and their values
	QStringList keys = jsonGroupsInfo.keys();

	int _groupsCount = keys.size();
	_groupsMap.clear();

	for ( int i = 0; i < _groupsCount; ++i )
	{
		_groupsMap.insert( keys.at(i).toUShort(), jsonGroupsInfo.take(keys.at(i)).toObject() );
	}
}

QMap<int,QJsonObject> LedDevicePhilipsHueBridge::getLightMap() const
{
	return _lightsMap;
}

QMap<int,QJsonObject> LedDevicePhilipsHueBridge::getGroupMap() const
{
	return _groupsMap;
}

QString LedDevicePhilipsHueBridge::getGroupName(int groupId) const
{
	QString groupName;
	if( _groupsMap.contains( groupId ) )
	{
		QJsonObject group = _groupsMap.value( groupId );
		groupName = group.value( API_GROUP_NAME ).toString().trimmed().replace("\"", "");
	}
	else
	{
		Error(_log, "Group ID %u doesn't exists on this bridge", groupId );
	}
	return groupName;
}

QJsonArray LedDevicePhilipsHueBridge::getGroupLights(int groupId) const
{
	QJsonArray groupLights;
	// search user groupid inside _groupsMap and create light if found
	if( _groupsMap.contains( groupId ) )
	{
		QJsonObject group = _groupsMap.value( groupId );

		if( group.value( API_GROUP_TYPE ) == API_GROUP_TYPE_ENTERTAINMENT )
		{
			QString groupName = getGroupName( groupId );
			groupLights = group.value( API_LIGHTS ).toArray();

			log( "Entertainment Group found", "[%d] %s", groupId, QSTRING_CSTR(groupName) );
			log( "Lights in Group", "%d", groupLights.size() );
			Info(_log, "Entertainment Group [%d] \"%s\" with %d Lights found", groupId, QSTRING_CSTR(groupName), groupLights.size() );
		}
		else
		{
			Error(_log, "Group ID %d is not an entertainment group", groupId );
		}
	}
	else
	{
		Error(_log, "Group ID %d doesn't exists on this bridge", groupId );
	}

	return groupLights;
}

QJsonDocument LedDevicePhilipsHueBridge::getLightState(int lightId)
{
	DebugIf( verbose, _log, "GetLightState [%d]", lightId );
	return get( QString("%1/%2").arg( API_LIGHTS ).arg( lightId ) );
}

void LedDevicePhilipsHueBridge::setLightState(int lightId, const QString &state)
{
	DebugIf( verbose, _log, "SetLightState [%d]: %s", lightId, QSTRING_CSTR(state) );
	put( QString("%1/%2/%3").arg( API_LIGHTS ).arg( lightId ).arg( API_STATE ), state );
}

QJsonDocument LedDevicePhilipsHueBridge::getGroupState(int groupId)
{
	DebugIf( verbose, _log, "GetGroupState [%d]", groupId );
	return get( QString("%1/%2").arg( API_GROUPS ).arg( groupId ) );
}

QJsonDocument LedDevicePhilipsHueBridge::setGroupState(int groupId, bool state)
{
	QString active = state ? API_STREAM_ACTIVE_VALUE_TRUE : API_STREAM_ACTIVE_VALUE_FALSE;
	return put(QString("%1/%2").arg(API_GROUPS).arg(groupId), QString("{\"%1\":{\"%2\":%3}}").arg(API_STREAM, API_STREAM_ACTIVE, active), true);
}

QJsonDocument LedDevicePhilipsHueBridge::get(const QString& route)
{
	_restApi->setPath(route);

	httpResponse response = _restApi->get();

	if (route.isEmpty() && response.error() &&
		(  response.getNetworkReplyError() == QNetworkReply::UnknownNetworkError ||
		   response.getNetworkReplyError() == QNetworkReply::ConnectionRefusedError ||
		   response.getNetworkReplyError() == QNetworkReply::RemoteHostClosedError ||
		   response.getNetworkReplyError() == QNetworkReply::OperationCanceledError ))
	{
		Warning(_log, "The Hue Bridge is not ready.");
	}

	checkApiError(response.getBody());
	return response.getBody();
}

QJsonDocument LedDevicePhilipsHueBridge::put(const QString& route, const QString& content, bool supressError)
{
	_restApi->setPath(route);

	httpResponse response = _restApi->put(content);
	checkApiError(response.getBody(), supressError);
	return response.getBody();
}

bool LedDevicePhilipsHueBridge::isStreamOwner(const QString &streamOwner) const
{
	return ( streamOwner != "" && streamOwner == _authToken );
}

QJsonArray LedDevicePhilipsHueBridge::discover()
{
	QJsonArray deviceList;

	SSDPDiscover discover;

	discover.skipDuplicateKeys(true);
	discover.setSearchFilter(SSDP_FILTER, SSDP_FILTER_HEADER);
	QString searchTarget = SSDP_ID;

	if (discover.discoverServices(searchTarget) > 0)
	{
		deviceList = discover.getServicesDiscoveredJson();
	}

	return deviceList;
}

QJsonObject LedDevicePhilipsHueBridge::discover(const QJsonObject& /*params*/)
{
	QJsonObject devicesDiscovered;
	devicesDiscovered.insert("ledDeviceType", _activeDeviceType );

	QJsonArray deviceList;

#ifdef ENABLE_MDNS
	QString discoveryMethod("mDNS");
	deviceList = MdnsBrowser::getInstance().getServicesDiscoveredJson(
		MdnsServiceRegister::getServiceType(_activeDeviceType),
		MdnsServiceRegister::getServiceNameFilter(_activeDeviceType),
		DEFAULT_DISCOVER_TIMEOUT
		);
#else
	QString discoveryMethod("ssdp");
	deviceList = discover();
#endif

	devicesDiscovered.insert("discoveryMethod", discoveryMethod);
	devicesDiscovered.insert("devices", deviceList);

	Debug(_log, "devicesDiscovered: [%s]", QString(QJsonDocument(devicesDiscovered).toJson(QJsonDocument::Compact)).toUtf8().constData() );

	return devicesDiscovered;
}

QJsonObject LedDevicePhilipsHueBridge::getProperties(const QJsonObject& params)
{
	DebugIf(verbose, _log, "params: [%s]", QString(QJsonDocument(params).toJson(QJsonDocument::Compact)).toUtf8().constData());
	QJsonObject properties;

	_hostName = params[CONFIG_HOST].toString("");
	_apiPort =  params[CONFIG_PORT].toInt();
	_authToken = params["user"].toString("");

	Info(_log, "Get properties for %s, hostname (%s)", QSTRING_CSTR(_activeDeviceType), QSTRING_CSTR(_hostName) );

	if (NetUtils::resolveHostToAddress(_log, _hostName, _address, _apiPort))
	{
		if ( openRestAPI() )
		{
			QString filter = params["filter"].toString("");
			_restApi->setPath(filter);

			// Perform request
			httpResponse response = _restApi->get();
			if (response.error())
			{
				Warning(_log, "%s get properties failed with error: '%s'", QSTRING_CSTR(_activeDeviceType), QSTRING_CSTR(response.getErrorReason()));
			}

			// Perform request
			properties.insert("properties", response.getBody().object());
		}

		DebugIf(verbose, _log, "properties: [%s]", QString(QJsonDocument(properties).toJson(QJsonDocument::Compact)).toUtf8().constData());
	}
	return properties;
}

QJsonObject LedDevicePhilipsHueBridge::addAuthorization(const QJsonObject& params)
{
	Debug(_log, "params: [%s]", QString(QJsonDocument(params).toJson(QJsonDocument::Compact)).toUtf8().constData());
	QJsonObject responseBody;

	// New Phillips-Bridge device client/application key
	_hostName = params[CONFIG_HOST].toString("");
	_apiPort =  params[CONFIG_PORT].toInt();

	Info(_log, "Add authorized user for %s, hostname (%s)", QSTRING_CSTR(_activeDeviceType), QSTRING_CSTR(_hostName) );

	if (NetUtils::resolveHostToAddress(_log, _hostName, _address, _apiPort))
	{
		if ( openRestAPI() )
		{
			QJsonObject clientKeyCmd{ {"devicetype", "hyperion#" + QHostInfo::localHostName()}, {"generateclientkey", true } };
			_restApi->setHeader(QNetworkRequest::ContentTypeHeader, "application/json");

			httpResponse response = _restApi->post(clientKeyCmd);
			if (response.error())
			{
				Warning(_log, "%s generation of authorization/client key failed with error: '%s'", QSTRING_CSTR(_activeDeviceType), QSTRING_CSTR(response.getErrorReason()));
			}
			else
			{
				if (!checkApiError(response.getBody(),false))
				{
					responseBody = response.getBody().array().first().toObject().value("success").toObject();
				}
			}
		}
	}
	return responseBody;
}

const std::set<QString> PhilipsHueLight::GAMUT_A_MODEL_IDS =
	{ "LLC001", "LLC005", "LLC006", "LLC007", "LLC010", "LLC011", "LLC012", "LLC013", "LLC014", "LST001" };
const std::set<QString> PhilipsHueLight::GAMUT_B_MODEL_IDS =
	{ "LCT001", "LCT002", "LCT003", "LCT007", "LLM001" };
const std::set<QString> PhilipsHueLight::GAMUT_C_MODEL_IDS =
	{ "LCA001", "LCA002", "LCA003", "LCG002", "LCP001", "LCP002", "LCT010", "LCT011", "LCT012", "LCT014", "LCT015", "LCT016", "LCT024", "LCX001", "LCX002", "LLC020", "LST002" };

PhilipsHueLight::PhilipsHueLight(Logger* log, int id, QJsonObject values, int ledidx, int onBlackTimeToPowerOff,
	int onBlackTimeToPowerOn)
	: _log(log)
	, _id(id)
	, _ledidx(ledidx)
	, _on(false)
	, _transitionTime(0)
	, _color({ 0.0, 0.0, 0.0 })
	, _hasColor(false)
	, _colorBlack({ 0.0, 0.0, 0.0 })
	, _modelId(values[API_MODEID].toString().trimmed().replace("\"", ""))
	, _lastSendColorTime(0)
	, _lastBlackTime(-1)
	, _lastWhiteTime(-1)
	, _blackScreenTriggered(false)
	, _onBlackTimeToPowerOff(onBlackTimeToPowerOff)
	, _onBlackTimeToPowerOn(onBlackTimeToPowerOn)
{
	// Find id in the sets and set the appropriate color space.
	if (GAMUT_A_MODEL_IDS.find(_modelId) != GAMUT_A_MODEL_IDS.end())
	{
		Debug(_log, "Recognized model id %s of light ID %d as gamut A", QSTRING_CSTR(_modelId), id );
		_colorSpace.red		= {0.704, 0.296};
		_colorSpace.green	= {0.2151, 0.7106};
		_colorSpace.blue	= {0.138, 0.08};
		_colorBlack 		= {0.138, 0.08, 0.0};
	}
	else if (GAMUT_B_MODEL_IDS.find(_modelId) != GAMUT_B_MODEL_IDS.end())
	{
		Debug(_log, "Recognized model id %s of light ID %d as gamut B", QSTRING_CSTR(_modelId), id );
		_colorSpace.red 	= {0.675, 0.322};
		_colorSpace.green	= {0.409, 0.518};
		_colorSpace.blue 	= {0.167, 0.04};
		_colorBlack 		= {0.167, 0.04, 0.0};
	}
	else if (GAMUT_C_MODEL_IDS.find(_modelId) != GAMUT_C_MODEL_IDS.end())
	{
		Debug(_log, "Recognized model id %s of light ID %d as gamut C", QSTRING_CSTR(_modelId), id );
		_colorSpace.red		= {0.6915, 0.3083};
		_colorSpace.green	= {0.17, 0.7};
		_colorSpace.blue 	= {0.1532, 0.0475};
		_colorBlack 		= {0.1532, 0.0475, 0.0};
	}
	else
	{
		Warning(_log, "Did not recognize model id %s of light ID %d", QSTRING_CSTR(_modelId), id );
		_colorSpace.red 	= {1.0, 0.0};
		_colorSpace.green 	= {0.0, 1.0};
		_colorSpace.blue 	= {0.0, 0.0};
		_colorBlack 		= {0.0, 0.0, 0.0};
	}

	_lightname = values["name"].toString().trimmed().replace("\"", "");
	Info(_log, "Light ID %d (\"%s\", LED index \"%d\", onBlackTimeToPowerOff: %d, _onBlackTimeToPowerOn: %d) created", id, QSTRING_CSTR(_lightname), ledidx, _onBlackTimeToPowerOff, _onBlackTimeToPowerOn);
}

void PhilipsHueLight::blackScreenTriggered()
{
	_blackScreenTriggered = true;
}

bool PhilipsHueLight::isBusy()
{
	bool temp = true;

	qint64 _currentTime = QDateTime::currentMSecsSinceEpoch();
	if (_currentTime - _lastSendColorTime >= 100)
	{
		_lastSendColorTime = _currentTime;
		temp = false;
	}

	return temp;
}

void PhilipsHueLight::setBlack()
{
	CiColor black;
	black.bri = 0;
	black.x = 0;
	black.y = 0;
	setColor(black);
}

bool PhilipsHueLight::isBlack(bool isBlack)
{
	if (!isBlack)
	{
		_lastBlackTime = 0;
		return false;
	}

	if (_lastBlackTime == 0)
	{
		_lastBlackTime = QDateTime::currentMSecsSinceEpoch();
		return false;
	}

	qint64 _currentTime = QDateTime::currentMSecsSinceEpoch();
	return _currentTime - _lastBlackTime >= _onBlackTimeToPowerOff;
}

bool PhilipsHueLight::isWhite(bool isWhite)
{
	if (!isWhite)
	{
		_lastWhiteTime = 0;
		return false;
	}

	if (_lastWhiteTime == 0)
	{
		_lastWhiteTime = QDateTime::currentMSecsSinceEpoch();
		return false;
	}

	qint64 _currentTime = QDateTime::currentMSecsSinceEpoch();
	return _currentTime - _lastWhiteTime >= _onBlackTimeToPowerOn;
}

int PhilipsHueLight::getId() const
{
	return _id;
}

QString PhilipsHueLight::getOriginalState() const
{
	return _originalState;
}

void PhilipsHueLight::saveOriginalState(const QJsonObject& values)
{
	if (_blackScreenTriggered)
	{
		_blackScreenTriggered = false;
		return;
	}
	// Get state object values which are subject to change.
	if (!values[API_STATE].toObject().contains("on"))
	{
		Error(_log, "Got invalid state object from light ID %d", _id );
	}
	QJsonObject lState = values[API_STATE].toObject();
	_originalStateJSON = lState;

	QJsonObject state;
	state["on"] = lState["on"];
	_originalColor = CiColor();
	_originalColor.bri = 0;
	_originalColor.x = 0;
	_originalColor.y = 0;
	QString c;
	if (state[API_STATE_ON].toBool())
	{
		state[API_XY_COORDINATES] = lState[API_XY_COORDINATES];
		state[API_BRIGHTNESS] = lState[API_BRIGHTNESS];
		_on = true;
		_color = {
			state[API_XY_COORDINATES].toArray()[0].toDouble(),
			state[API_XY_COORDINATES].toArray()[1].toDouble(),
			state[API_BRIGHTNESS].toDouble() / 254.0
		};
		_originalColor = _color;
		c = QString("{ \"%1\": [%2, %3], \"%4\": %5 }").arg(API_XY_COORDINATES).arg(_originalColor.x, 0, 'd', 4).arg(_originalColor.y, 0, 'd', 4).arg(API_BRIGHTNESS).arg((_originalColor.bri * 254.0), 0, 'd', 4);
		Debug(_log, "Philips original state stored: %s", QSTRING_CSTR(c));
		_transitionTime = values[API_STATE].toObject()[API_TRANSITIONTIME].toInt();
	}
	//Determine the original state.
	_originalState = QJsonDocument(state).toJson(QJsonDocument::JsonFormat::Compact).trimmed();
}

void PhilipsHueLight::setOnOffState(bool on)
{
	this->_on = on;
}

void PhilipsHueLight::setTransitionTime(int transitionTime)
{
	this->_transitionTime = transitionTime;
}

void PhilipsHueLight::setColor(const CiColor& color)
{
	this->_hasColor = true;
	this->_color = color;
}

bool PhilipsHueLight::getOnOffState() const
{
	return _on;
}

int PhilipsHueLight::getTransitionTime() const
{
	return _transitionTime;
}

CiColor PhilipsHueLight::getColor() const
{
	return _color;
}

bool PhilipsHueLight::hasColor() const
{
	return _hasColor;
}
CiColorTriangle PhilipsHueLight::getColorSpace() const
{
	return _colorSpace;
}

LedDevicePhilipsHue::LedDevicePhilipsHue(const QJsonObject& deviceConfig)
	: LedDevicePhilipsHueBridge(deviceConfig)
	, _switchOffOnBlack(false)
	, _brightnessFactor(1.0)
	, _transitionTime(1)
	, _isInitLeds(false)
	, _lightsCount(0)
	, _groupId(0)
	, _blackLightsTimeout(15000)
	, _blackLevel(0.0)
	, _onBlackTimeToPowerOff(100)
	, _onBlackTimeToPowerOn(100)
	, _candyGamma(true)
	, _handshake_timeout_min(600)
	, _handshake_timeout_max(2000)
	, _stopConnection(false)
	, _lastConfirm(0)
	, _lastId(-1)
	, _groupStreamState(false)
{
}

LedDevice* LedDevicePhilipsHue::construct(const QJsonObject &deviceConfig)
{
	return new LedDevicePhilipsHue(deviceConfig);
}

LedDevicePhilipsHue::~LedDevicePhilipsHue()
{
}

bool LedDevicePhilipsHue::init(const QJsonObject &deviceConfig)
{
	bool isInitOK {false};

	if (!verbose)
	{
		verbose = deviceConfig[CONFIG_VERBOSE].toBool(false);
	}

	// Initialise LedDevice configuration and execution environment
	_useHueEntertainmentAPI = deviceConfig[CONFIG_USE_HUE_ENTERTAINMENT_API].toBool(false);

	// Overwrite non supported/required features
	if ( deviceConfig["rewriteTime"].toInt(0) > 0 )
	{
		InfoIf ( ( !_useHueEntertainmentAPI ), _log, "Device Philips Hue does not require rewrites. Refresh time is ignored." );
		_devConfig["rewriteTime"] = 0;
	}

	_switchOffOnBlack       = _devConfig[CONFIG_ON_OFF_BLACK].toBool(true);
	_blackLightsTimeout     = _devConfig[CONFIG_BLACK_LIGHTS_TIMEOUT].toInt(15000);
	_brightnessFactor       = _devConfig[CONFIG_BRIGHTNESSFACTOR].toDouble(1.0);
	_transitionTime         = _devConfig[CONFIG_TRANSITIONTIME].toInt(1);
	_isRestoreOrigState     = _devConfig[CONFIG_RESTORE_STATE].toBool(true);
	_groupId                = _devConfig[CONFIG_GROUPID].toInt(0);
	_blackLevel             = _devConfig["blackLevel"].toDouble(0.0);
	_onBlackTimeToPowerOff  = _devConfig["onBlackTimeToPowerOff"].toInt(100);
	_onBlackTimeToPowerOn   = _devConfig["onBlackTimeToPowerOn"].toInt(100);
	_candyGamma             = _devConfig["candyGamma"].toBool(true);

	if (_blackLevel < 0.0) { _blackLevel = 0.0; }
	if (_blackLevel > 1.0) { _blackLevel = 1.0; }

	if (LedDevicePhilipsHueBridge::init(_devConfig))
	{
		log( "Off on Black", "%d", static_cast<int>( _switchOffOnBlack ) );
		log( "Brightness Factor", "%f", _brightnessFactor );
		log( "Transition Time", "%d", _transitionTime );
		log( "Restore Original State", "%d", static_cast<int>( _isRestoreOrigState ) );
		log( "Use Hue Entertainment API", "%d", static_cast<int>( _useHueEntertainmentAPI) );
		log("Brightness Threshold", "%f", _blackLevel);
		log("CandyGamma", "%d", static_cast<int>(_candyGamma));
		log("Time powering off when black", "%d", _onBlackTimeToPowerOff);
		log("Time powering on when signalled", "%d", _onBlackTimeToPowerOn);

		if( _useHueEntertainmentAPI )
		{
			log( "Entertainment API Group-ID", "%d", _groupId );

			if( _groupId == 0 )
			{
				Error(_log, "Disabling usage of HueEntertainmentAPI: Group-ID is invalid", "%d", _groupId);
				_useHueEntertainmentAPI = false;
			}
		}

		// Everything is OK -> enable
		_isDeviceInitialised = true;
		isInitOK = true;
	}

	return isInitOK;
}

bool LedDevicePhilipsHue::setLights()
{
	bool isInitOK = true;

	_lightIds.clear();

	QJsonArray lArray;

	if( _useHueEntertainmentAPI && _groupId > 0 )
	{
		lArray = getGroupLights( _groupId );
	}

	if( lArray.empty() )
	{
		if( _useHueEntertainmentAPI )
		{
			_useHueEntertainmentAPI = false;
			Error(_log, "Group-ID [%u] is not usable - Entertainment API usage was disabled!", _groupId );
		}
		lArray = _devConfig[ CONFIG_LIGHTIDS ].toArray();
	}

	QString lightIDStr;

	if( !lArray.empty() )
	{
		for (const QJsonValue &id : qAsConst(lArray))
		{
			int lightId = id.toString().toInt();
			if( lightId > 0 )
			{
				if(std::find(_lightIds.begin(), _lightIds.end(), lightId) == _lightIds.end())
				{
					_lightIds.emplace_back(lightId);
					if(!lightIDStr.isEmpty())
					{
						lightIDStr.append(", ");
					}
					lightIDStr.append(QString::number(lightId));
				}
			}
		}
		std::sort( _lightIds.begin(), _lightIds.end() );
	}

	int configuredLightsCount = static_cast<int>(_lightIds.size());

	log( "Light-IDs configured", "%d", configuredLightsCount );

	if ( configuredLightsCount == 0 )
	{
		this->setInError( "No light-IDs configured" );
		isInitOK = false;
	}
	else
	{
		log( "Light-IDs", "%s", QSTRING_CSTR( lightIDStr ) );
		isInitOK = updateLights( getLightMap() );
	}

	return isInitOK;
}

bool LedDevicePhilipsHue::initLeds()
{
	bool isInitOK = false;

	if ( !this->isInError() )
	{
		if( setLights() )
		{
			if( _useHueEntertainmentAPI )
			{
				_groupName = getGroupName( _groupId );
			}
			else
			{
				// adapt latchTime to count of user lightIds (bridge 10Hz max overall)
				setLatchTime( static_cast<int>( 100 * getLightsCount() ) );
				isInitOK = true;
			}
			_isInitLeds = true;
		}
		else
		{
			isInitOK = false;
		}
	}

	return isInitOK;
}

bool LedDevicePhilipsHue::updateLights(const QMap<int, QJsonObject> &map)
{
	bool isInitOK = true;

	// search user lightid inside map and create light if found
	_lights.clear();

	if(!_lightIds.empty())
	{
		int ledidx = 0;
		_lights.reserve(_lightIds.size());
		for(const auto id : _lightIds)
		{
			if (map.contains(id))
			{
				_lights.emplace_back(_log, id, map.value(id), ledidx, _onBlackTimeToPowerOff, _onBlackTimeToPowerOn);
			}
			else
			{
				Warning(_log, "Configured light-ID %d is not available at this bridge", id );
			}
			ledidx++;
		}
	}

	unsigned int lightsCount = static_cast<unsigned int>(_lights.size());

	setLightsCount( lightsCount );

	if( lightsCount == 0 )
	{
		Error(_log, "No usable lights found!" );
		isInitOK = false;
	}

	return isInitOK;
}

bool LedDevicePhilipsHue::openStream()
{
	bool isInitOK = false;
	bool streamState = getStreamGroupState();

	if ( !this->isInError() )
	{
		// stream is already active
		if( streamState )
		{
			// if same owner stop stream
			if(isStreamOwner(_streamOwner))
			{
				Debug(_log, "Group: \"%s\" [%u] is in use, try to stop stream", QSTRING_CSTR(_groupName), _groupId );

				if( stopStream() )
				{
					Debug(_log, "Stream successful stopped");
					//Restore Philips Hue devices state
					restoreState();
					isInitOK = startStream();
				}
				else
				{
					Error(_log, "Group: \"%s\" [%u] couldn't stop by user: \"%s\" - Entertainment API not usable", QSTRING_CSTR( _groupName ), _groupId, QSTRING_CSTR( _streamOwner ) );
				}
			}
			else
			{
				Error(_log, "Group: \"%s\" [%u] is in use and owned by other user: \"%s\" - Entertainment API not usable", QSTRING_CSTR(_groupName), _groupId, QSTRING_CSTR(_streamOwner));
			}
		}
		else
		{
			isInitOK = startStream();
		}
	}

	if( isInitOK )
	{
		// open UDP SSL Connection
		isInitOK = ProviderUdpSSL::initNetwork();

		if( isInitOK )
		{
			Info(_log, "Philips Hue Entertainment API successful connected! Start Streaming.");
		}
		else
		{
			Error(_log, "Philips Hue Entertainment API not connected!");
		}
	}
	else
	{
		Error(_log, "Philips Hue Entertainment API could not be initialized!");
	}

	return isInitOK;
}

bool LedDevicePhilipsHue::startStream()
{
	int retries {3};
	while (!setStreamGroupState(true) && --retries > 0)
	{
		Debug(_log, "Start Entertainment stream. Retrying...");
			QThread::msleep(500);
	}

	bool rc = (retries > 0);
	if (rc)
	{
		Debug(_log, "The Entertainment stream started successfully");
	}
	else
	{
		this->setInError("The Entertainment stream failed to start. Give up.");
	}
	return rc;
}

bool LedDevicePhilipsHue::stopStream()
{
	stopConnection();

	int retries = 3;
	while (!setStreamGroupState(false) && --retries > 0)
	{
		Debug(_log, "Stop Entertainment stream. Retrying...");
		QThread::msleep(500);
	}

	bool rc = (retries > 0);
	if (rc)
	{
		Debug(_log, "The Entertainment stream stopped successfully");
	}
	else
	{
		this->setInError("The Entertainment stream did NOT stop. Give up.");
	}

	return rc;
}

bool LedDevicePhilipsHue::getStreamGroupState()
{
	QJsonDocument doc = getGroupState( _groupId );

	if ( !this->isInError() )
	{
		QJsonObject obj = doc.object()[ API_STREAM ].toObject();

		if( obj.isEmpty() )
		{
			this->setInError( "No Entertainment/Streaming details in Group found" );
		}
		else
		{
			_streamOwner = obj.value( API_STREAM_OWNER ).toString();
			bool streamState = obj.value( API_STREAM_ACTIVE ).toBool();
			return streamState;
		}
	}

	return false;
}

bool LedDevicePhilipsHue::setStreamGroupState(bool state)
{
	QString active = state ? API_STREAM_ACTIVE_VALUE_TRUE : API_STREAM_ACTIVE_VALUE_FALSE;

	QJsonDocument doc = setGroupState( _groupId, state );

	QVariant rsp = doc.toVariant();

	QVariantList list = rsp.toList();
	if ( !list.isEmpty() )
	{
		QVariantMap map = list.first().toMap();

		if ( !map.contains( API_SUCCESS ) )
		{
			Warning(_log, "%s", QSTRING_CSTR(QString("Set stream to %1: Neither error nor success contained in Bridge response...").arg(active)));
		}
		else
		{
			//Check original Hue response {"success":{"/groups/groupID/stream/active":activeYesNo}}
			QString valueName = QString( API_STREAM_RESPONSE_FORMAT ).arg( API_GROUPS ).arg( _groupId ).arg( API_STREAM, API_STREAM_ACTIVE );
			if(!map.value( API_SUCCESS ).toMap().value( valueName ).isValid())
			{
				//Workaround
				//Check diyHue response   {"success":{"/groups/groupID/stream":{"active":activeYesNo}}}
				QString diyHueValueName = QString( "/%1/%2/%3" ).arg( API_GROUPS ).arg( _groupId ).arg( API_STREAM);
				QJsonObject diyHueActiveState = map.value( API_SUCCESS ).toMap().value( diyHueValueName ).toJsonObject();

				if( diyHueActiveState.isEmpty() )
				{
					this->setInError( QString("set stream to %1: Bridge response is not Valid").arg( active ) );
				}
				else
				{
					_groupStreamState = diyHueActiveState[API_STREAM_ACTIVE].toBool();
					return (_groupStreamState == state);
				}
			}
			else
			{
				_groupStreamState = map.value(API_SUCCESS).toMap().value(valueName).toBool();
				return (_groupStreamState == state);
			}
		}
	}

	return false;
}

QByteArray LedDevicePhilipsHue::prepareStreamData() const
{
	QByteArray msg;
	msg.reserve(static_cast<int>(sizeof(HEADER) + sizeof(PAYLOAD_PER_LIGHT) * _lights.size()));
	msg.append(reinterpret_cast<const char*>(HEADER), sizeof(HEADER));

	for (const PhilipsHueLight& light : _lights)
	{
		CiColor lightC = light.getColor();
		quint64 R = lightC.x * 0xffff;
		quint64 G = lightC.y * 0xffff;
		quint64 B = (lightC.x || lightC.y) ? lightC.bri * 0xffff : 0;
		unsigned int id = light.getId();
		const uint8_t payload[] = {
			0x00, 0x00, static_cast<uint8_t>(id),
			static_cast<uint8_t>((R >> 8) & 0xff), static_cast<uint8_t>(R & 0xff),
			static_cast<uint8_t>((G >> 8) & 0xff), static_cast<uint8_t>(G & 0xff),
			static_cast<uint8_t>((B >> 8) & 0xff), static_cast<uint8_t>(B & 0xff)
		};
		msg.append(reinterpret_cast<const char *>(payload), sizeof(payload));
	}

	return msg;
}

void LedDevicePhilipsHue::stop()
{
	LedDevicePhilipsHueBridge::stop();
}

int LedDevicePhilipsHue::open()
{
	int retval = -1;
	if ( LedDevicePhilipsHueBridge::open() == 0)
	{
		if (initLeds())
		{
			retval = 0;
		}
	}
	return retval;
}

int LedDevicePhilipsHue::write(const std::vector<ColorRgb> & ledValues)
{
	// lights will be empty sometimes
	if( _lights.empty() )
	{
		return -1;
	}

	// more lights than LEDs, stop always
	if( ledValues.size() < getLightsCount() )
	{
		Error(_log, "More light-IDs configured than LEDs, each light-ID requires one LED!" );
		return -1;
	}

	if (_isOn)
	{
		writeSingleLights( ledValues );

		if (_useHueEntertainmentAPI && _isInitLeds)
		{
			writeStream();
		}
	}
	return 0;
}

int LedDevicePhilipsHue::writeSingleLights(const std::vector<ColorRgb>& ledValues)
{
	// Iterate through lights and set colors.
	unsigned int idx = 0;
	for ( PhilipsHueLight& light : _lights )
	{
		// Get color.
		ColorRgb color = ledValues.at(idx);
		// Scale colors from [0, 255] to [0, 1] and convert to xy space.
		CiColor xy = CiColor::rgbToCiColor(color.red / 255.0, color.green / 255.0, color.blue / 255.0, light.getColorSpace(), _candyGamma);

		if (_switchOffOnBlack && xy.bri <= _blackLevel && light.isBlack(true))
		{
			xy.bri = 0;
			xy.x = 0;
			xy.y = 0;

			if( _useHueEntertainmentAPI )
			{
				if (light.getOnOffState())
				{
					this->setColor(light, xy);
					this->setOnOffState(light, false);
				}
			}
			else
			{
				if (light.getOnOffState())
				{
					setState(light, false, xy);
				}
			}
		}
		else
		{
			bool currentstate = light.getOnOffState();

			if (_switchOffOnBlack && xy.bri > _blackLevel && light.isWhite(true))
			{
				if (!currentstate)
				{
					xy.bri = xy.bri / 2;
				}

				if (_useHueEntertainmentAPI)
				{
					this->setOnOffState(light, true);
					this->setColor(light, xy);
				}
				else
				{
					this->setState(light, true, xy);
				}
			}
			else if (!_switchOffOnBlack)
			{
				// Write color if color has been changed.
				if (_useHueEntertainmentAPI)
				{
					this->setOnOffState(light, true);
					this->setColor(light, xy);
				}
				else
				{
					this->setState( light, true, xy );
				}
			}
		}
		if (xy.bri > _blackLevel)
		{
			light.isBlack(false);
		}
		else if (xy.bri <= _blackLevel)
		{
			light.isWhite(false);
		}

		++idx;
	}

	return 0;
}

void LedDevicePhilipsHue::writeStream(bool flush)
{
	QByteArray streamData = prepareStreamData();
	writeBytes(static_cast<uint>(streamData.size()), reinterpret_cast<unsigned char*>(streamData.data()), flush);
}

void LedDevicePhilipsHue::setOnOffState(PhilipsHueLight& light, bool on, bool force)
{
	if (light.getOnOffState() != on || force)
	{
		light.setOnOffState( on );
		QString state = on ? API_STATE_VALUE_TRUE : API_STATE_VALUE_FALSE;
		setLightState( light.getId(), QString("{\"%1\": %2 }").arg( API_STATE_ON, state ) );
	}
}

void LedDevicePhilipsHue::setTransitionTime(PhilipsHueLight& light)
{
	if (light.getTransitionTime() != _transitionTime)
	{
		light.setTransitionTime( _transitionTime );
		setLightState( light.getId(), QString("{\"%1\": %2 }").arg( API_TRANSITIONTIME ).arg( _transitionTime ) );
	}
}

void LedDevicePhilipsHue::setColor(PhilipsHueLight& light, CiColor& color)
{
	if (!light.hasColor() || light.getColor() != color)
	{
		if( !_useHueEntertainmentAPI )
		{
			const int bri = qRound(qMin(254.0, _brightnessFactor * qMax(1.0, color.bri * 254.0)));
			QString stateCmd = QString("{\"%1\":[%2,%3],\"%4\":%5}").arg( API_XY_COORDINATES ).arg( color.x, 0, 'd', 4 ).arg( color.y, 0, 'd', 4 ).arg( API_BRIGHTNESS ).arg( bri );
			setLightState( light.getId(), stateCmd );
		}
		else
		{
			color.bri = (qMin((double)1.0, _brightnessFactor * qMax((double)0, color.bri)));
		}
		light.setColor( color );
	}
}

void LedDevicePhilipsHue::setState(PhilipsHueLight& light, bool on, const CiColor& color)
{
	QString stateCmd;
	QString powerCmd;
	bool priority = false;

	if ( light.getOnOffState() != on )
	{
		light.setOnOffState( on );
		QString state = on ? API_STATE_VALUE_TRUE : API_STATE_VALUE_FALSE;
		powerCmd = QString("\"%1\":%2").arg(API_STATE_ON, state);
		priority = true;
	}

	if ( light.getTransitionTime() != _transitionTime )
	{
		light.setTransitionTime( _transitionTime );
		stateCmd += QString("\"%1\":%2,").arg( API_TRANSITIONTIME ).arg( _transitionTime );
	}

	const int bri = qRound( qMin( 254.0, _brightnessFactor * qMax( 1.0, color.bri * 254.0 ) ) );
	if (!light.hasColor() || light.getColor() != color)
	{
		if (!light.isBusy() || priority)
		{
			light.setColor( color );
			stateCmd += QString("\"%1\":[%2,%3],\"%4\":%5,").arg(API_XY_COORDINATES).arg(color.x, 0, 'd', 4).arg(color.y, 0, 'd', 4).arg(API_BRIGHTNESS).arg(bri);
		}

	}

	if (!stateCmd.isEmpty() || !powerCmd.isEmpty())
	{
		if ( !stateCmd.isEmpty() )
		{
			stateCmd = QString("\"%1\":%2").arg(API_STATE_ON, "true") + "," + stateCmd;
			stateCmd = stateCmd.left(stateCmd.length() - 1);
		}

		qint64 _currentTime = QDateTime::currentMSecsSinceEpoch();

		if ((_currentTime - _lastConfirm > 1500 && ((int)light.getId()) != _lastId) ||
			 (_currentTime - _lastConfirm > 3000))
		{
			_lastId = light.getId();
			_lastConfirm = _currentTime;
		}

		if (!stateCmd.isEmpty())
		{
			setLightState( light.getId(), "{" + stateCmd + "}" );
		}
		if (!powerCmd.isEmpty() && !on)
		{
			QThread::msleep(50);
			setLightState(light.getId(), "{" + powerCmd + "}");
		}
	}
}

void LedDevicePhilipsHue::setLightsCount( unsigned int lightsCount )
{
	_lightsCount = lightsCount;
}


bool LedDevicePhilipsHue::switchOn()
{
	bool rc {false};

	if ( _isOn )
	{
		Debug(_log, "Device %s is already on. Skipping.", QSTRING_CSTR(_activeDeviceType));
		rc = true;
	}
	else
	{
		if ( _isDeviceReady )
		{
			Info(_log, "Switching device %s ON", QSTRING_CSTR(_activeDeviceType));
			if ( storeState() )
			{
				if (_useHueEntertainmentAPI)
				{
					if (openStream())
					{
						if (startConnection())
						{
							if ( powerOn() )
							{
								_isOn = true;
								setRewriteTime(STREAM_REWRITE_TIME.count());
							}
						}
					}
				}
				else
				{
					if ( powerOn() )
					{
						_isOn = true;
					}
				}
			}

			if (_isOn)
			{
				Info(_log, "Device %s is ON", QSTRING_CSTR(_activeDeviceType));
				emit enableStateChanged(_isEnabled);
				rc =true;
			}
			else
			{
				Warning(_log, "Failed switching device %s ON", QSTRING_CSTR(_activeDeviceType));
			}
		}
	}
	return rc;
}

bool LedDevicePhilipsHue::switchOff()
{
	bool rc {false};

	if ( !_isOn )
	{
		rc = true;
	}
	else
	{
		if ( _isDeviceInitialised )
		{
			if ( _isDeviceReady )
			{
				if (_useHueEntertainmentAPI && _groupStreamState)
				{
					Info(_log, "Switching device %s OFF", QSTRING_CSTR(_activeDeviceType));
					_isOn = false;
					setRewriteTime(0);

					if ( _isRestoreOrigState )
					{
						stopStream();
						rc = restoreState();
					}
					else
					{
						for (PhilipsHueLight& light : _lights)
						{
							light.setBlack();
						}
						writeStream(true);

						stopStream();
						rc = powerOff();
					}

					if (rc)
					{
						Info(_log, "Device %s is OFF", QSTRING_CSTR(_activeDeviceType));
						rc = true;
					}
					else
					{
						Warning(_log, "Failed switching device %s OFF", QSTRING_CSTR(_activeDeviceType));
					}

				}
				else
				{
					rc = LedDevicePhilipsHueBridge::switchOff();
				}
			}
			else
			{
				rc = true;
			}
		}
	}
	return rc;
}

bool LedDevicePhilipsHue::powerOn()
{
	bool rc {true};
	if (_isDeviceReady)
	{
		for ( PhilipsHueLight& light : _lights )
		{
			setOnOffState(light, true, true);
		}
	}
	return rc;
}

bool LedDevicePhilipsHue::powerOff()
{
	bool rc {true};
	if (_isDeviceReady)
	{
		for ( PhilipsHueLight& light : _lights )
		{
			setOnOffState(light, false, true);
		}
	}
	return rc;
}

bool LedDevicePhilipsHue::storeState()
{
	bool rc {true};
	if ( _isRestoreOrigState )
	{
		if( !_lightIds.empty() )
		{
			for ( PhilipsHueLight& light : _lights )
			{
				QJsonObject values = getLightState(light.getId()).object();
				light.saveOriginalState(values);
			}
		}
	}
	return rc;
}

bool LedDevicePhilipsHue::restoreState()
{
	bool rc {true};
	if ( _isRestoreOrigState )
	{
		// Restore device's original state
		if( !_lightIds.empty() )
		{
			for ( PhilipsHueLight& light : _lights )
			{
				setLightState( light.getId(),light.getOriginalState() );
			}
		}
	}
	return rc;
}

void LedDevicePhilipsHue::identify(const QJsonObject& params)
{
	DebugIf(verbose, _log, "params: [%s]", QString(QJsonDocument(params).toJson(QJsonDocument::Compact)).toUtf8().constData());
	QJsonObject properties;

	_hostName = params[CONFIG_HOST].toString("");
	_apiPort =  params[CONFIG_PORT].toInt();
	_authToken = params["user"].toString("");

	Info(_log, "Identify %s, hostname (%s)", QSTRING_CSTR(_activeDeviceType), QSTRING_CSTR(_hostName) );

	if (NetUtils::resolveHostToAddress(_log, _hostName, _address, _apiPort))
	{
		if ( openRestAPI() )
		{
				int lightId = params["lightId"].toInt(0);

				QString resource = QString("%1/%2/%3").arg(API_LIGHTS).arg(lightId).arg(API_STATE);
				_restApi->setPath(resource);

				QString stateCmd;
				stateCmd += QString("\"%1\":%2,").arg(API_STATE_ON, API_STATE_VALUE_TRUE);
				stateCmd += QString("\"%1\":\"%2\"").arg("alert", "select");
				stateCmd = "{" + stateCmd + "}";

				// Perform request
				httpResponse response = _restApi->put(stateCmd);
				if (response.error())
				{
					Warning(_log, "%s identification failed with error: '%s'", QSTRING_CSTR(_activeDeviceType), QSTRING_CSTR(response.getErrorReason()));
				}
		}
	}
}