Huawei: Add UV index support

Also adds "0.0 to 15.0" comment to the weatherSpec uvIndex.

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/huawei/HuaweiCoordinator.java

@@ -423,6 +423,10 @@ public class HuaweiCoordinator {
         return supportsCommandForService(0x0f, 0x0b);
     }
 
+    public boolean supportsWeatherUvIndex() {
+        return supportsExpandCapability(0x2f);
+    }
+
     public boolean supportsWorkouts() {
         return supportsCommandForService(0x17, 0x01);
     }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/huawei/packets/Weather.java

@@ -45,6 +45,9 @@ public class Weather {
         // WeatherSunMoonSupport
         public boolean sunRiseSetSupported = false;
         public boolean moonPhaseSupported = false;
+
+        // ExpandCapabilityRequest
+        public boolean uvIndexSupported = false;
     }
 
     public enum WeatherIcon {
@@ -358,6 +361,7 @@ public class Weather {
                 HuaweiTemperatureFormat temperatureUnit,
                 Short airQualityIndex,
                 Integer observationTime,
+                Float uvIndex,
                 String sourceName
         ) {
             super(paramsProvider);
@@ -411,7 +415,8 @@ public class Weather {
                 this.tlv.put(0x0c, observationTime);
             if (sourceName != null && settings.sourceSupported)
                 this.tlv.put(0x0e, sourceName);
-            this.tlv.put(0x0f, (byte) 0);
+            if (uvIndex != null && settings.uvIndexSupported)
+                this.tlv.put(0x0f, uvIndex.byteValue());
 
             this.isEncrypted = true;
             this.complete = true;

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/model/WeatherSpec.java

@@ -54,7 +54,7 @@ public class WeatherSpec implements Parcelable, Serializable {
     public int todayMinTemp; // kelvin
     public float windSpeed; // km per hour
     public int windDirection; // deg
-    public float uvIndex;
+    public float uvIndex; // 0.0 to 15.0
     public int precipProbability; // %
     public int dewPoint; // kelvin
     public float pressure; // mb
@@ -357,7 +357,7 @@ public class WeatherSpec implements Parcelable, Serializable {
         public int humidity;
         public float windSpeed; // km per hour
         public int windDirection; // deg
-        public float uvIndex;
+        public float uvIndex; // 0.0 to 15.0
         public int precipProbability; // %
         public int sunRise;
         public int sunSet;
@@ -438,7 +438,7 @@ public class WeatherSpec implements Parcelable, Serializable {
         public int humidity;
         public float windSpeed; // km per hour
         public int windDirection; // deg
-        public float uvIndex;
+        public float uvIndex; // 0.0 to 15.0
         public int precipProbability; // %
 
         public Hourly() {

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/huawei/HuaweiSupportProvider.java

@@ -1877,6 +1877,7 @@ public class HuaweiSupportProvider {
         WeatherSpec weatherSpec = weatherSpecs.get(0);
 
         Weather.Settings weatherSettings = new Weather.Settings();
+        weatherSettings.uvIndexSupported = getHuaweiCoordinator().supportsWeatherUvIndex();
 
         SendWeatherStartRequest weatherStartRequest = new SendWeatherStartRequest(this, weatherSettings);
         try {

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/huawei/requests/SendWeatherCurrentRequest.java

@@ -66,6 +66,7 @@ public class SendWeatherCurrentRequest extends Request {
                     temperatureFormat,
                     aqi,
                     weatherSpec.timestamp,
+                    weatherSpec.uvIndex,
                     "Gadgetbridge"
                 ).serialize();
         } catch (HuaweiPacket.CryptoException e) {