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SynchronizationService.java
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SynchronizationService.java
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/*
* AsteroidOSSync
* Copyright (c) 2023 AsteroidOS
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.asteroidos.sync.services;
import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Build;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.os.Message;
import android.os.Messenger;
import android.os.RemoteException;
import android.util.Log;
import androidx.annotation.NonNull;
import androidx.core.app.NotificationCompat;
import org.asteroidos.sync.MainActivity;
import org.asteroidos.sync.R;
import org.asteroidos.sync.asteroid.AsteroidBleManager;
import org.asteroidos.sync.asteroid.IAsteroidDevice;
import org.asteroidos.sync.connectivity.IConnectivityService;
import org.asteroidos.sync.connectivity.IService;
import org.asteroidos.sync.connectivity.IServiceCallback;
import org.asteroidos.sync.connectivity.MediaService;
import org.asteroidos.sync.connectivity.NotificationService;
import org.asteroidos.sync.connectivity.ScreenshotService;
import org.asteroidos.sync.connectivity.SilentModeService;
import org.asteroidos.sync.connectivity.TimeService;
import org.asteroidos.sync.connectivity.WeatherService;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.UUID;
import no.nordicsemi.android.ble.observer.ConnectionObserver;
public class SynchronizationService extends Service implements IAsteroidDevice, ConnectionObserver {
public static final String TAG = SynchronizationService.class.toString();
public static final int MSG_CONNECT = 1;
public static final int MSG_DISCONNECT = 2;
public static final int MSG_SET_LOCAL_NAME = 3;
public static final int MSG_SET_STATUS = 4;
public static final int MSG_SET_BATTERY_PERCENTAGE = 5;
public static final int MSG_REQUEST_BATTERY_LIFE = 6;
public static final int MSG_SET_DEVICE = 7;
public static final int MSG_UPDATE = 8;
public static final int MSG_UNSET_DEVICE = 9;
private static final String NOTIFICATION_CHANNEL_ID = "synchronizationservice_channel_id_01";
final Messenger mMessenger = new Messenger(new SynchronizationHandler(this));
private final int NOTIFICATION = 2725;
public BluetoothDevice mDevice;
public int batteryPercentage = 0;
HashMap<UUID, IConnectivityService> bleServices;
List<IService> nonBleServices;
private NotificationManager mNM;
private ConnectionState mState = ConnectionState.STATUS_DISCONNECTED;
private Messenger replyTo;
private SharedPreferences mPrefs;
private AsteroidBleManager mBleMngr;
final void handleConnect() {
if (mBleMngr == null) {
mBleMngr = new AsteroidBleManager(getApplicationContext(), SynchronizationService.this);
mBleMngr.setConnectionObserver(this);
}
if (mState == ConnectionState.STATUS_CONNECTED || mState == ConnectionState.STATUS_CONNECTING) return;
mPrefs = getSharedPreferences(MainActivity.PREFS_NAME, Context.MODE_PRIVATE);
String defaultDevMacAddr = mPrefs.getString(MainActivity.PREFS_DEFAULT_MAC_ADDR, "");
if (defaultDevMacAddr.equals("")) return;
String defaultLocalName = mPrefs.getString(MainActivity.PREFS_DEFAULT_LOC_NAME, "");
BluetoothDevice device = BluetoothAdapter.getDefaultAdapter().getRemoteDevice(defaultDevMacAddr);
try {
device.createBond();
mBleMngr.connect(device)
.useAutoConnect(true)
.timeout(100 * 1000)
.retry(3, 200)
.done(device1 -> {
Log.d(TAG, "Connected to " + device1.getName());
// Now we read the current values of the GATT characteristics,
// _after_ the connection has been fully established, to avoid
// connection failures on Android 12 and later.
mBleMngr.readCharacteristics();
})
.fail((device2, error) -> Log.e(TAG, "Failed to connect to " + device.getName() +
" with error code: " + error))
.enqueue();
} catch (SecurityException e) {
e.printStackTrace();
}
}
final void handleDisconnect() {
if (mBleMngr == null) return;
if (mState == ConnectionState.STATUS_DISCONNECTED) return;
bleServices.values().forEach(IService::unsync);
mBleMngr.abort();
mBleMngr.disconnect().enqueue();
}
final void handleSetDevice(BluetoothDevice device) {
SharedPreferences.Editor editor = mPrefs.edit();
Log.d(TAG, "handleSetDevice: " + device.toString());
editor.putString(MainActivity.PREFS_DEFAULT_MAC_ADDR, device.getAddress());
mDevice = device;
try {
String name = mDevice.getName();
Message answer = Message.obtain(null, MSG_SET_LOCAL_NAME);
answer.obj = name;
replyTo.send(answer);
replyTo.send(Message.obtain(null, MSG_SET_STATUS, mState));
} catch (RemoteException | SecurityException | NullPointerException ignored) {
}
editor.putString(MainActivity.PREFS_DEFAULT_LOC_NAME, name);
editor.apply();
}
final void handleUpdateConnectionStatus() {
if (mDevice != null) {
try {
replyTo.send(Message.obtain(null, MSG_SET_STATUS, mState));
} catch (RemoteException | NullPointerException ignored) {
}
}
}
final public void unsyncServices() {
bleServices.values().forEach(IService::unsync);
nonBleServices.forEach(IService::unsync);
}
final public void syncServices() {
bleServices.values().forEach(IService::sync);
nonBleServices.forEach(IService::sync);
}
@Override
public final ConnectionState getConnectionState() {
return mState;
}
@Override
public final void send(UUID characteristic, byte[] data, IConnectivityService service) {
mBleMngr.send(characteristic, data);
Log.d(TAG, characteristic.toString() + " " + Arrays.toString(data));
}
@Override
public final void registerBleService(IConnectivityService service) {
bleServices.put(service.getServiceUUID(), service);
Log.d(TAG, "BLE Service registered: " + service.getServiceUUID());
}
@Override
public final void unregisterBleService(UUID serviceUUID) {
bleServices.remove(getServiceByUUID(serviceUUID));
Log.d(TAG, "BLE Service unregistered: " + serviceUUID);
}
@Override
public final void registerCallback(UUID characteristicUUID, IServiceCallback callback) {
mBleMngr.recvCallbacks.putIfAbsent(characteristicUUID, callback);
}
@Override
public final void unregisterCallback(UUID characteristicUUID) {
mBleMngr.recvCallbacks.remove(characteristicUUID);
}
@Override
public final IConnectivityService getServiceByUUID(UUID uuid) {
return bleServices.get(uuid);
}
@Override
public final HashMap<UUID, IConnectivityService> getServices() {
return bleServices;
}
@Override
public final void onDeviceConnected(@NonNull BluetoothDevice device) {
mState = ConnectionState.STATUS_CONNECTED;
updateNotification();
}
@Override
public void onDeviceFailedToConnect(@NonNull BluetoothDevice device, int reason) {
try {
Log.d(TAG, "Failed to connect to " + device.getName() + ": " + reason);
} catch (SecurityException e) {
e.printStackTrace();
}
}
@Override
public final void onDeviceReady(@NonNull BluetoothDevice device) {
mState = ConnectionState.STATUS_CONNECTED;
updateNotification();
syncServices();
AsteroidBleManager.BatteryLevelEvent bevent = new AsteroidBleManager.BatteryLevelEvent();
bevent.battery = batteryPercentage;
handleUpdateBatteryPercentage(bevent);
}
@Override
public final void onDeviceDisconnecting(@NonNull BluetoothDevice device) {
mState = ConnectionState.STATUS_CONNECTED;
updateNotification();
}
@Override
public final void onDeviceDisconnected(@NonNull BluetoothDevice device, int reason) {
mState = ConnectionState.STATUS_DISCONNECTED;
updateNotification();
unsyncServices();
}
@Override
public void onCreate() {
bleServices = new HashMap<>();
nonBleServices = new ArrayList<>();
mNM = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel notificationChannel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, "Synchronization Service", NotificationManager.IMPORTANCE_LOW);
notificationChannel.setDescription("Connection status");
notificationChannel.setVibrationPattern(new long[]{0L});
notificationChannel.setShowBadge(false);
mNM.createNotificationChannel(notificationChannel);
}
mPrefs = getSharedPreferences(MainActivity.PREFS_NAME, Context.MODE_PRIVATE);
String defaultDevMacAddr = mPrefs.getString(MainActivity.PREFS_DEFAULT_MAC_ADDR, "");
String defaultLocalName = mPrefs.getString(MainActivity.PREFS_DEFAULT_LOC_NAME, "");
if (mBleMngr == null) {
mBleMngr = new AsteroidBleManager(getApplicationContext(), SynchronizationService.this);
mBleMngr.setConnectionObserver(this);
}
if (!(defaultDevMacAddr.equals(""))) {
mDevice = BluetoothAdapter.getDefaultAdapter().getRemoteDevice(defaultDevMacAddr);
}
if (nonBleServices.isEmpty())
nonBleServices.add(new SilentModeService(getApplicationContext()));
if (bleServices.isEmpty()) {
// Register Services
registerBleService(new MediaService(getApplicationContext(), this));
registerBleService(new NotificationService(getApplicationContext(), this));
registerBleService(new WeatherService(getApplicationContext(), this));
registerBleService(new ScreenshotService(getApplicationContext(), this));
registerBleService(new TimeService(getApplicationContext(), this));
}
handleConnect();
updateNotification();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
return START_STICKY;
}
private void updateNotification() {
handleUpdateConnectionStatus();
String status = getString(R.string.disconnected);
if (mDevice != null) {
try {
if (mState == ConnectionState.STATUS_CONNECTING)
status = getString(R.string.connecting_formatted, mDevice.getName());
else if (mState == ConnectionState.STATUS_CONNECTED)
status = getString(R.string.connected_formatted, mDevice.getName());
} catch (SecurityException e) {
e.printStackTrace();
}
}
if (mDevice != null) {
Intent intent = new Intent(this, MainActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
intent, PendingIntent.FLAG_UPDATE_CURRENT + PendingIntent.FLAG_IMMUTABLE);
Notification notification = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID)
.setSmallIcon(R.drawable.ic_stat_name)
.setContentTitle(getText(R.string.app_name))
.setContentText(status)
.setContentIntent(contentIntent)
.setOngoing(true)
.setPriority(Notification.PRIORITY_MIN)
.setShowWhen(false)
.build();
mNM.notify(NOTIFICATION, notification);
startForeground(NOTIFICATION, notification);
}
}
@Override
public void onDestroy() {
mBleMngr.disconnect();
mNM.cancel(NOTIFICATION);
}
@Override
public IBinder onBind(Intent intent) {
return mMessenger.getBinder();
}
@Override
public void onDeviceConnecting(@NonNull BluetoothDevice device) {
mState = ConnectionState.STATUS_CONNECTING;
updateNotification();
}
private void handleUnSetDevice() {
SharedPreferences.Editor editor = mPrefs.edit();
if (mState != ConnectionState.STATUS_DISCONNECTED) {
mBleMngr.disconnect().enqueue();
}
mDevice = null;
editor.putString(MainActivity.PREFS_DEFAULT_LOC_NAME, "");
editor.putString(MainActivity.PREFS_DEFAULT_MAC_ADDR, "");
editor.putString(MainActivity.PREFS_NAME, "");
editor.apply();
}
public void handleUpdateBatteryPercentage(AsteroidBleManager.BatteryLevelEvent battery) {
Log.d(TAG, "handleBattery: " + battery.battery + "%");
batteryPercentage = battery.battery;
try {
if (replyTo != null)
replyTo.send(Message.obtain(null, MSG_SET_BATTERY_PERCENTAGE, batteryPercentage, 0));
} catch (RemoteException e) {
e.printStackTrace();
}
}
static private class SynchronizationHandler extends Handler {
private final SynchronizationService mService;
SynchronizationHandler(SynchronizationService service) {
super(Looper.getMainLooper());
mService = service;
}
@Override
public void handleMessage(Message msg) {
mService.replyTo = msg.replyTo;
switch (msg.what) {
case MSG_CONNECT:
mService.handleConnect();
break;
case MSG_DISCONNECT:
mService.handleDisconnect();
break;
case MSG_REQUEST_BATTERY_LIFE:
AsteroidBleManager.BatteryLevelEvent batteryLevelEvent = new AsteroidBleManager.BatteryLevelEvent();
batteryLevelEvent.battery = mService.batteryPercentage;
mService.handleUpdateBatteryPercentage(batteryLevelEvent);
break;
case MSG_SET_DEVICE:
mService.handleSetDevice((BluetoothDevice) msg.obj);
break;
case MSG_UNSET_DEVICE:
mService.handleUnSetDevice();
break;
case MSG_UPDATE:
mService.handleUpdateConnectionStatus();
break;
default:
super.handleMessage(msg);
}
}
}
}