Java tutorial
/* Copyright (C) 2017 Andreas Shimokawa This file is part of Gadgetbridge. Gadgetbridge is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. Gadgetbridge 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 Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ package nodomain.freeyourgadget.gadgetbridge.service.devices.pebble; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.util.Base64; import org.json.JSONArray; import org.json.JSONException; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.util.UUID; import nodomain.freeyourgadget.gadgetbridge.deviceevents.GBDeviceEventAppMessage; import nodomain.freeyourgadget.gadgetbridge.deviceevents.pebble.GBDeviceEventDataLogging; class PebbleKitSupport { //private static final String PEBBLEKIT_ACTION_PEBBLE_CONNECTED = "com.getpebble.action.PEBBLE_CONNECTED"; //private static final String PEBBLEKIT_ACTION_PEBBLE_DISCONNECTED = "com.getpebble.action.PEBBLE_DISCONNECTED"; private static final String PEBBLEKIT_ACTION_APP_ACK = "com.getpebble.action.app.ACK"; private static final String PEBBLEKIT_ACTION_APP_NACK = "com.getpebble.action.app.NACK"; private static final String PEBBLEKIT_ACTION_APP_RECEIVE = "com.getpebble.action.app.RECEIVE"; private static final String PEBBLEKIT_ACTION_APP_RECEIVE_ACK = "com.getpebble.action.app.RECEIVE_ACK"; //private static final String PEBBLEKIT_ACTION_APP_RECEIVE_NACK = "com.getpebble.action.app.RECEIVE_NACK"; private static final String PEBBLEKIT_ACTION_APP_SEND = "com.getpebble.action.app.SEND"; private static final String PEBBLEKIT_ACTION_APP_START = "com.getpebble.action.app.START"; private static final String PEBBLEKIT_ACTION_APP_STOP = "com.getpebble.action.app.STOP"; private static final String PEBBLEKIT_ACTION_DL_RECEIVE_DATA_NEW = "com.getpebble.action.dl.RECEIVE_DATA_NEW"; private static final String PEBBLEKIT_ACTION_DL_RECEIVE_DATA = "com.getpebble.action.dl.RECEIVE_DATA"; private static final String PEBBLEKIT_ACTION_DL_ACK_DATA = "com.getpebble.action.dl.ACK_DATA"; private static final String PEBBLEKIT_ACTION_DL_REQUEST_DATA = "com.getpebble.action.dl.REQUEST_DATA"; private static final String PEBBLEKIT_ACTION_DL_FINISH_SESSION = "com.getpebble.action.dl.FINISH_SESSION_NEW"; private static final Logger LOG = LoggerFactory.getLogger(PebbleKitSupport.class); private final PebbleProtocol mPebbleProtocol; private final Context mContext; private final PebbleIoThread mPebbleIoThread; private int dataLogTransactionId = 1; private final BroadcastReceiver mPebbleKitReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); LOG.info("Got action: " + action); UUID uuid; switch (action) { case PEBBLEKIT_ACTION_APP_START: case PEBBLEKIT_ACTION_APP_STOP: uuid = (UUID) intent.getSerializableExtra("uuid"); if (uuid != null) { mPebbleIoThread .write(mPebbleProtocol.encodeAppStart(uuid, action.equals(PEBBLEKIT_ACTION_APP_START))); } break; case PEBBLEKIT_ACTION_APP_SEND: int transaction_id = intent.getIntExtra("transaction_id", -1); uuid = (UUID) intent.getSerializableExtra("uuid"); String jsonString = intent.getStringExtra("msg_data"); LOG.info("json string: " + jsonString); try { JSONArray jsonArray = new JSONArray(jsonString); mPebbleIoThread.write(mPebbleProtocol.encodeApplicationMessageFromJSON(uuid, jsonArray)); // if (transaction_id >= 0 && transaction_id <= 255) { sendAppMessageAck(transaction_id); // } } catch (JSONException e) { e.printStackTrace(); } break; case PEBBLEKIT_ACTION_APP_ACK: transaction_id = intent.getIntExtra("transaction_id", -1); if (!mPebbleProtocol.mAlwaysACKPebbleKit) { if (transaction_id >= 0 && transaction_id <= 255) { mPebbleIoThread .write(mPebbleProtocol.encodeApplicationMessageAck(null, (byte) transaction_id)); } else { LOG.warn("illegal transaction id " + transaction_id); } } break; case PEBBLEKIT_ACTION_DL_ACK_DATA: LOG.info("GOT DL DATA ACK"); break; } } }; PebbleKitSupport(Context context, PebbleIoThread pebbleIoThread, PebbleProtocol pebbleProtocol) { mContext = context; mPebbleIoThread = pebbleIoThread; mPebbleProtocol = pebbleProtocol; IntentFilter intentFilter = new IntentFilter(); intentFilter.addAction(PEBBLEKIT_ACTION_APP_ACK); intentFilter.addAction(PEBBLEKIT_ACTION_APP_NACK); intentFilter.addAction(PEBBLEKIT_ACTION_APP_SEND); intentFilter.addAction(PEBBLEKIT_ACTION_APP_START); intentFilter.addAction(PEBBLEKIT_ACTION_APP_STOP); intentFilter.addAction(PEBBLEKIT_ACTION_DL_ACK_DATA); mContext.registerReceiver(mPebbleKitReceiver, intentFilter); } void sendAppMessageIntent(GBDeviceEventAppMessage appMessage) { Intent intent = new Intent(); intent.setAction(PEBBLEKIT_ACTION_APP_RECEIVE); intent.putExtra("uuid", appMessage.appUUID); intent.putExtra("msg_data", appMessage.message); intent.putExtra("transaction_id", appMessage.id); LOG.info("broadcasting to uuid " + appMessage.appUUID + " transaction id: " + appMessage.id + " JSON: " + appMessage.message); mContext.sendBroadcast(intent); } private void sendAppMessageAck(int transactionId) { Intent intent = new Intent(); intent.setAction(PEBBLEKIT_ACTION_APP_RECEIVE_ACK); intent.putExtra("transaction_id", transactionId); LOG.info("broadcasting ACK (transaction id " + transactionId + ")"); mContext.sendBroadcast(intent); } void close() { try { mContext.unregisterReceiver(mPebbleKitReceiver); } catch (IllegalArgumentException ignore) { } } void sendDataLoggingIntent(GBDeviceEventDataLogging dataLogging) { Intent intent = new Intent(); intent.putExtra("data_log_timestamp", dataLogging.timestamp); intent.putExtra("uuid", dataLogging.appUUID); intent.putExtra("data_log_uuid", dataLogging.appUUID); // Is that really the same? intent.putExtra("data_log_tag", dataLogging.tag); switch (dataLogging.command) { case GBDeviceEventDataLogging.COMMAND_RECEIVE_DATA: intent.setAction(PEBBLEKIT_ACTION_DL_RECEIVE_DATA_NEW); intent.putExtra("pbl_data_type", dataLogging.pebbleDataType); for (Object dataObject : dataLogging.data) { intent.putExtra("pbl_data_id", dataLogTransactionId++); switch (dataLogging.pebbleDataType) { case PebbleProtocol.TYPE_BYTEARRAY: intent.putExtra("pbl_data_object", Base64.encodeToString((byte[]) dataObject, Base64.NO_WRAP)); break; case PebbleProtocol.TYPE_UINT: intent.putExtra("pbl_data_object", (Long) dataObject); break; case PebbleProtocol.TYPE_INT: intent.putExtra("pbl_data_object", (Integer) dataObject); break; } LOG.info("broadcasting datalogging to uuid " + dataLogging.appUUID + " tag: " + dataLogging.tag + "transaction id: " + dataLogTransactionId + " type: " + dataLogging.pebbleDataType); mContext.sendBroadcast(intent); } break; case GBDeviceEventDataLogging.COMMAND_FINISH_SESSION: intent.setAction(PEBBLEKIT_ACTION_DL_FINISH_SESSION); LOG.info("broadcasting datalogging finish session to uuid " + dataLogging.appUUID + " tag: " + dataLogging.tag); mContext.sendBroadcast(intent); break; default: LOG.warn("invalid datalog command"); } } }