Pebble: add support for weather in some watchfaces by gh/zalewszczak

See https://github.com/zalewszczak/pebble for a list of watchfaces
#482

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/AppMessageHandlerZalewszczak.java

@@ -0,0 +1,90 @@
+package nodomain.freeyourgadget.gadgetbridge.service.devices.pebble;
+
+import android.util.Pair;
+
+import java.nio.ByteBuffer;
+import java.util.ArrayList;
+import java.util.UUID;
+
+import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEvent;
+import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventSendBytes;
+import nodomain.freeyourgadget.gadgetbridge.model.Weather;
+import nodomain.freeyourgadget.gadgetbridge.model.WeatherSpec;
+
+class AppMessageHandlerZalewszczak extends AppMessageHandler {
+    private static final int KEY_ICON = 0;
+    private static final int KEY_TEMP = 1; //celsius
+
+    AppMessageHandlerZalewszczak(UUID uuid, PebbleProtocol pebbleProtocol) {
+        super(uuid, pebbleProtocol);
+    }
+
+    /*
+ * converted to JAVA from original JS
+ */
+    private int getIconForConditionCode(int conditionCode) {
+        if (conditionCode < 300) {
+            return 7;
+        } else if (conditionCode < 400) {
+            return 6;
+        } else if (conditionCode == 511) {
+            return 8;
+        } else if (conditionCode < 600) {
+            return 6;
+        } else if (conditionCode < 700) {
+            return 8;
+        } else if (conditionCode < 800) {
+            return 10;
+        } else if (conditionCode == 800) {
+            return 1;
+        } else if (conditionCode == 801) {
+            return 2;
+        } else if (conditionCode < 900) {
+            return 5;
+        } else {
+            return 0;
+        }
+    }
+
+
+    private byte[] encodeWeatherMessage(WeatherSpec weatherSpec) {
+        if (weatherSpec == null) {
+            return null;
+        }
+
+        ArrayList<Pair<Integer, Object>> pairs = new ArrayList<>(2);
+        pairs.add(new Pair<>(KEY_TEMP, (Object) (Math.round(weatherSpec.currentTemp - 273) + "C")));
+        pairs.add(new Pair<>(KEY_ICON, (Object) (getIconForConditionCode(weatherSpec.currentConditionCode))));
+        byte[] weatherMessage = mPebbleProtocol.encodeApplicationMessagePush(PebbleProtocol.ENDPOINT_APPLICATIONMESSAGE, mUUID, pairs);
+
+        ByteBuffer buf = ByteBuffer.allocate(weatherMessage.length);
+
+        buf.put(weatherMessage);
+
+        return buf.array();
+    }
+
+    @Override
+    public GBDeviceEvent[] handleMessage(ArrayList<Pair<Integer, Object>> pairs) {
+        // Just ACK
+        GBDeviceEventSendBytes sendBytesAck = new GBDeviceEventSendBytes();
+        sendBytesAck.encodedBytes = mPebbleProtocol.encodeApplicationMessageAck(mUUID, mPebbleProtocol.last_id);
+        return new GBDeviceEvent[]{sendBytesAck};
+    }
+
+    @Override
+    public GBDeviceEvent[] onAppStart() {
+        WeatherSpec weatherSpec = Weather.getInstance().getWeatherSpec();
+        if (weatherSpec == null) {
+            return new GBDeviceEvent[]{null};
+        }
+        GBDeviceEventSendBytes sendBytes = new GBDeviceEventSendBytes();
+        sendBytes.encodedBytes = encodeWeatherMessage(weatherSpec);
+        return new GBDeviceEvent[]{sendBytes};
+    }
+
+    @Override
+    public byte[] encodeUpdateWeather(WeatherSpec weatherSpec) {
+        return encodeWeatherMessage(weatherSpec);
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/PebbleProtocol.java

@@ -363,6 +363,9 @@ public class PebbleProtocol extends GBDeviceProtocol {
     private static final UUID UUID_HELTHIFY = UUID.fromString("7ee97b2c-95e8-4720-b94e-70fccd905d98");
     private static final UUID UUID_TREKVOLLE = UUID.fromString("2da02267-7a19-4e49-9ed1-439d25db14e4");
     private static final UUID UUID_SQUARE = UUID.fromString("cb332373-4ee5-4c5c-8912-4f62af2d756c");
+    private static final UUID UUID_ZALEWSZCZAK_CROWEX = UUID.fromString("a88b3151-2426-43c6-b1d0-9b288b3ec47e");
+    private static final UUID UUID_ZALEWSZCZAK_FANCY = UUID.fromString("014e17bf-5878-4781-8be1-8ef998cee1ba");
+    private static final UUID UUID_ZALEWSZCZAK_TALLY = UUID.fromString("abb51965-52e2-440a-b93c-843eeacb697d");
 
     private static final UUID UUID_ZERO = new UUID(0, 0);
 
@@ -382,6 +385,9 @@ public class PebbleProtocol extends GBDeviceProtocol {
         mAppMessageHandlers.put(UUID_HELTHIFY, new AppMessageHandlerHealthify(UUID_HELTHIFY, PebbleProtocol.this));
         mAppMessageHandlers.put(UUID_TREKVOLLE, new AppMessageHandlerTrekVolle(UUID_TREKVOLLE, PebbleProtocol.this));
         mAppMessageHandlers.put(UUID_SQUARE, new AppMessageHandlerSquare(UUID_SQUARE, PebbleProtocol.this));
+        mAppMessageHandlers.put(UUID_ZALEWSZCZAK_CROWEX, new AppMessageHandlerZalewszczak(UUID_ZALEWSZCZAK_CROWEX, PebbleProtocol.this));
+        mAppMessageHandlers.put(UUID_ZALEWSZCZAK_FANCY, new AppMessageHandlerZalewszczak(UUID_ZALEWSZCZAK_FANCY, PebbleProtocol.this));
+        mAppMessageHandlers.put(UUID_ZALEWSZCZAK_TALLY, new AppMessageHandlerZalewszczak(UUID_ZALEWSZCZAK_TALLY, PebbleProtocol.this));
     }
 
     private final HashMap<Byte, DatalogSession> mDatalogSessions = new HashMap<>();