Add better handling of lights via introducing BaseDevice

Add BaseDevice and implement a couple of the base interfaces

base.go

@@ -8,8 +8,14 @@ type Config interface {
 	GetBattery() *uint8
 }
 
+// StateLight is the base for all lights
 type StateLight interface {
 	GetAlert() interface{}
 	GetBrightness() int
 	IsOn() bool
 }
+
+// StateDevice is the base for all "light" devices also for OnOff  Sockets
+type StateDevice interface {
+	IsOn() bool
+}

http/client_light.go

@@ -58,6 +58,26 @@ type LightResponseStateDetail struct {
 	Reachable *bool `json:"reachable"`
 }
 
+func (l LightResponseStateDetail) IsOn() bool {
+	if l.On != nil {
+		return *l.On
+	} else {
+		return false
+	}
+}
+
+func (l LightResponseStateDetail) GetAlert() interface{} {
+	return l.Alert
+}
+
+func (l LightResponseStateDetail) GetBrightness() int {
+	if l.Bri != nil {
+		return *l.Bri
+	} else {
+		return 0
+	}
+}
+
 type LightResponseState[STATE any] struct {
 
 	// The color capabilities as reported by the light.

ws/state.go

@@ -7,10 +7,23 @@ type StateDaylight struct {
 	// FIXME HERE ARE MISSING FIELDS
 }
 
+type StateBaseDevice struct {
+	On        bool `json:"on,omitempty"`
+	Reachable bool `json:"reachable,omitempty"`
+}
+
+func (s StateBaseDevice) IsOn() bool {
+	return s.On
+}
+
+func (s StateBaseDevice) IsReachable() bool {
+	return s.Reachable
+}
+
 type StateBaseLight struct {
+	StateBaseDevice
 	Alert interface{} `json:"alert,omitempty"`
 	Bri   int         `json:"bri,omitempty"`
-	On    bool        `json:"on,omitempty"`
 }
 
 func (s StateBaseLight) GetAlert() interface{} {
@@ -21,34 +34,26 @@ func (s StateBaseLight) GetBrightness() int {
 	return s.Bri
 }
 
-func (s StateBaseLight) IsOn() bool {
-	return s.On
-}
-
 type StateDimmablelight struct {
 	StateBaseLight
-	Reachable bool `json:"reachable,omitempty"`
 }
 
 type StateColortemperaturelight struct {
 	StateBaseLight
 	Colormode string `json:"colormode"`
 	Ct        int    `json:"ct"`
-	Reachable bool   `json:"reachable"`
 }
 
 type StateExtendedcolorlight struct {
 	// FIXME HERE ARE MISSING FIELDS
 	StateBaseLight
 	Colormode string `json:"colormode"`
 	Ct        int    `json:"ct"`
-	Reachable bool   `json:"reachable"`
 }
 
 type StateOnOffpluginunit struct {
-	Alert     interface{} `json:"alert"`
-	On        bool        `json:"on"`
-	Reachable bool        `json:"reachable"`
+	StateBaseDevice
+	Alert interface{} `json:"alert"`
 }
 
 type StateZHATemperature struct {