feat(java): add BertyAdvertise class

Signed-off-by: Sacha Froment <sfroment42@gmail.com>

client/react-native/android/ble/src/main/java/chat/berty/ble/BertyAdvertise.java

@@ -0,0 +1,92 @@
+package chat.berty.ble;
+
+import android.annotation.SuppressLint;
+import android.annotation.TargetApi;
+import android.bluetooth.le.AdvertiseCallback;
+import android.bluetooth.le.AdvertiseData;
+import android.bluetooth.le.AdvertiseSettings;
+import android.bluetooth.le.BluetoothLeAdvertiser;
+import android.os.Build;
+import android.os.ParcelUuid;
+import android.util.Log;
+
+import static chat.berty.ble.BertyConstants.SERVICE_UUID;
+
+@SuppressLint("LongLogTag")
+@TargetApi(Build.VERSION_CODES.LOLLIPOP)
+public class BertyAdvertise extends AdvertiseCallback {
+    private static final String TAG = "chat.berty.ble.BertyAdvertise";
+
+    public static AdvertiseData makeAdvertiseData() {
+        ParcelUuid pUuid = new ParcelUuid(SERVICE_UUID);
+
+        AdvertiseData.Builder builder = new AdvertiseData.Builder()
+                    .setIncludeDeviceName(true)
+                    .setIncludeTxPowerLevel(false)
+                    .addServiceUuid(pUuid);
+
+        return builder.build();
+    }
+
+    public static AdvertiseSettings createAdvSettings(boolean connectible, int timeoutMillis) {
+        AdvertiseSettings.Builder builder = new AdvertiseSettings.Builder();
+
+        builder.setAdvertiseMode(AdvertiseSettings.ADVERTISE_MODE_LOW_LATENCY)
+        .setConnectable(connectible)
+        .setTxPowerLevel(AdvertiseSettings.ADVERTISE_TX_POWER_HIGH)
+        .setTimeout(timeoutMillis);
+
+        return builder.build();
+    }
+
+    public BertyAdvertise() {
+        super();
+        Thread.currentThread().setName("BertyAdvertise");
+    }
+
+    /**
+     * Callback triggered in response to {@link BluetoothLeAdvertiser#startAdvertising} indicating
+     * that the advertising has been started successfully.
+     *
+     * @param settingsInEffect The actual settings used for advertising, which may be different from
+     *                         what has been requested.
+     */
+    @Override
+    public void onStartSuccess(AdvertiseSettings settingsInEffect) {
+        Log.e(TAG, "Advertising onStartSuccess: " + settingsInEffect);
+        super.onStartSuccess(settingsInEffect);
+    }
+
+    /**
+     * Callback when advertising could not be started.
+     *
+     * @param errorCode Error code (see ADVERTISE_FAILED_* constants) for advertising start
+     *                  failures.
+     */
+    @Override
+    public void onStartFailure(int errorCode) {
+
+        String errorString;
+        switch (errorCode) {
+            case ADVERTISE_FAILED_DATA_TOO_LARGE: errorString = "ADVERTISE_FAILED_DATA_TOO_LARGE";
+                break;
+
+            case ADVERTISE_FAILED_TOO_MANY_ADVERTISERS: errorString = "ADVERTISE_FAILED_TOO_MANY_ADVERTISERS";
+                break;
+
+            case ADVERTISE_FAILED_ALREADY_STARTED: errorString = "ADVERTISE_FAILED_ALREADY_STARTED";
+                break;
+
+            case ADVERTISE_FAILED_INTERNAL_ERROR: errorString = "ADVERTISE_FAILED_INTERNAL_ERROR";
+                break;
+
+            case ADVERTISE_FAILED_FEATURE_UNSUPPORTED: errorString = "ADVERTISE_FAILED_FEATURE_UNSUPPORTED";
+                break;
+
+            default: errorString = "UNKNOWN ADVERTISE FAILURE";
+                break;
+        }
+        Log.e(TAG, "Advertising onStartFailure: " + errorString);
+        super.onStartFailure(errorCode);
+    }
+}