mirror of
https://codeberg.org/Freeyourgadget/Gadgetbridge
synced 2024-06-02 03:16:07 +02:00
314 lines
13 KiB
Java
314 lines
13 KiB
Java
/* Copyright (C) 2016-2017 Carsten Pfeiffer
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This file is part of Gadgetbridge.
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Gadgetbridge is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published
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by the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Gadgetbridge is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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package nodomain.freeyourgadget.gadgetbridge.service.devices.miband2.operations;
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import android.bluetooth.BluetoothGatt;
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import android.bluetooth.BluetoothGattCharacteristic;
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import android.content.SharedPreferences;
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import android.support.annotation.NonNull;
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import android.support.v4.util.TimeUtils;
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import android.text.format.DateUtils;
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import android.widget.Toast;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.io.IOException;
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import java.text.DateFormat;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Calendar;
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import java.util.GregorianCalendar;
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import java.util.List;
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import java.util.UUID;
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import java.util.concurrent.TimeUnit;
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import nodomain.freeyourgadget.gadgetbridge.GBApplication;
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import nodomain.freeyourgadget.gadgetbridge.Logging;
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import nodomain.freeyourgadget.gadgetbridge.R;
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import nodomain.freeyourgadget.gadgetbridge.database.DBHandler;
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import nodomain.freeyourgadget.gadgetbridge.database.DBHelper;
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import nodomain.freeyourgadget.gadgetbridge.devices.SampleProvider;
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import nodomain.freeyourgadget.gadgetbridge.devices.miband.MiBand2Service;
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import nodomain.freeyourgadget.gadgetbridge.devices.miband.MiBandSampleProvider;
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import nodomain.freeyourgadget.gadgetbridge.entities.DaoSession;
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import nodomain.freeyourgadget.gadgetbridge.entities.Device;
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import nodomain.freeyourgadget.gadgetbridge.entities.MiBandActivitySample;
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import nodomain.freeyourgadget.gadgetbridge.entities.User;
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import nodomain.freeyourgadget.gadgetbridge.service.btle.BLETypeConversions;
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import nodomain.freeyourgadget.gadgetbridge.service.btle.TransactionBuilder;
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import nodomain.freeyourgadget.gadgetbridge.service.btle.actions.SetDeviceBusyAction;
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import nodomain.freeyourgadget.gadgetbridge.service.btle.actions.WaitAction;
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import nodomain.freeyourgadget.gadgetbridge.service.devices.miband2.MiBand2Support;
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import nodomain.freeyourgadget.gadgetbridge.service.devices.miband2.AbstractMiBand2Operation;
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import nodomain.freeyourgadget.gadgetbridge.util.ArrayUtils;
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import nodomain.freeyourgadget.gadgetbridge.util.DateTimeUtils;
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import nodomain.freeyourgadget.gadgetbridge.util.GB;
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/**
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* An operation that fetches activity data. For every fetch, a new operation must
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* be created, i.e. an operation may not be reused for multiple fetches.
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*/
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public class FetchActivityOperation extends AbstractMiBand2Operation {
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private static final Logger LOG = LoggerFactory.getLogger(FetchActivityOperation.class);
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private List<MiBandActivitySample> samples = new ArrayList<>(60*24); // 1day per default
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private byte lastPacketCounter;
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private Calendar startTimestamp;
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private int fetchCount;
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public FetchActivityOperation(MiBand2Support support) {
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super(support);
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}
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@Override
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protected void enableNeededNotifications(TransactionBuilder builder, boolean enable) {
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if (!enable) {
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// dynamically enabled, but always disabled on finish
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builder.notify(getCharacteristic(MiBand2Service.UUID_CHARACTERISTIC_5_ACTIVITY_DATA), enable);
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}
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}
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@Override
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protected void doPerform() throws IOException {
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startFetching();
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}
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private void startFetching() throws IOException {
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samples.clear();
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lastPacketCounter = -1;
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TransactionBuilder builder = performInitialized("fetching activity data");
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getSupport().setLowLatency(builder);
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if (fetchCount == 0) {
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builder.add(new SetDeviceBusyAction(getDevice(), getContext().getString(R.string.busy_task_fetch_activity_data), getContext()));
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}
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fetchCount++;
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BluetoothGattCharacteristic characteristicActivityData = getCharacteristic(MiBand2Service.UUID_CHARACTERISTIC_5_ACTIVITY_DATA);
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builder.notify(characteristicActivityData, false);
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BluetoothGattCharacteristic characteristicFetch = getCharacteristic(MiBand2Service.UUID_UNKNOWN_CHARACTERISTIC4);
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builder.notify(characteristicFetch, true);
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GregorianCalendar sinceWhen = getLastSuccessfulSyncTime();
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builder.write(characteristicFetch, BLETypeConversions.join(new byte[] { MiBand2Service.COMMAND_ACTIVITY_DATA_START_DATE, 0x01 }, getSupport().getTimeBytes(sinceWhen, TimeUnit.MINUTES)));
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builder.add(new WaitAction(1000)); // TODO: actually wait for the success-reply
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builder.notify(characteristicActivityData, true);
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builder.write(characteristicFetch, new byte[] { MiBand2Service.COMMAND_FETCH_ACTIVITY_DATA });
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builder.queue(getQueue());
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}
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private GregorianCalendar getLastSuccessfulSyncTime() {
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long timeStampMillis = GBApplication.getPrefs().getLong(getLastSyncTimeKey(), 0);
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if (timeStampMillis != 0) {
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GregorianCalendar calendar = BLETypeConversions.createCalendar();
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calendar.setTimeInMillis(timeStampMillis);
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return calendar;
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}
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GregorianCalendar calendar = BLETypeConversions.createCalendar();
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calendar.add(Calendar.DAY_OF_MONTH, -10);
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return calendar;
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}
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private void saveLastSyncTimestamp(@NonNull GregorianCalendar timestamp) {
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SharedPreferences.Editor editor = GBApplication.getPrefs().getPreferences().edit();
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editor.putLong(getLastSyncTimeKey(), timestamp.getTimeInMillis());
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editor.apply();
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}
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private String getLastSyncTimeKey() {
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return getDevice().getAddress() + "_" + "lastSyncTimeMillis";
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}
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@Override
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public boolean onCharacteristicChanged(BluetoothGatt gatt,
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BluetoothGattCharacteristic characteristic) {
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UUID characteristicUUID = characteristic.getUuid();
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if (MiBand2Service.UUID_CHARACTERISTIC_5_ACTIVITY_DATA.equals(characteristicUUID)) {
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handleActivityNotif(characteristic.getValue());
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return true;
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} else if (MiBand2Service.UUID_UNKNOWN_CHARACTERISTIC4.equals(characteristicUUID)) {
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handleActivityMetadata(characteristic.getValue());
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return true;
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} else {
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return super.onCharacteristicChanged(gatt, characteristic);
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}
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}
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private void handleActivityFetchFinish() {
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LOG.info("Fetching activity data has finished round " + fetchCount);
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GregorianCalendar lastSyncTimestamp = saveSamples();
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if (lastSyncTimestamp != null && needsAnotherFetch(lastSyncTimestamp)) {
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try {
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startFetching();
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return;
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} catch (IOException ex) {
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LOG.error("Error starting another round of fetching activity data", ex);
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}
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}
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operationFinished();
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unsetBusy();
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}
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private boolean needsAnotherFetch(GregorianCalendar lastSyncTimestamp) {
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if (fetchCount > 5) {
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LOG.warn("Already jave 5 fetch rounds, not doing another one.");
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return false;
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}
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if (DateUtils.isToday(lastSyncTimestamp.getTimeInMillis())) {
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LOG.info("Hopefully no further fetch needed, last synced timestamp is from today.");
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return false;
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}
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if (lastSyncTimestamp.getTimeInMillis() > System.currentTimeMillis()) {
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LOG.warn("Not doing another fetch since last synced timestamp is in the future: " + DateTimeUtils.formatDateTime(lastSyncTimestamp.getTime()));
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return false;
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}
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LOG.info("Doing another fetch since last sync timestamp is still too old: " + DateTimeUtils.formatDateTime(lastSyncTimestamp.getTime()));
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return true;
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}
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private GregorianCalendar saveSamples() {
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if (samples.size() > 0) {
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// save all the samples that we got
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try (DBHandler handler = GBApplication.acquireDB()) {
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DaoSession session = handler.getDaoSession();
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SampleProvider<MiBandActivitySample> sampleProvider = new MiBandSampleProvider(getDevice(), session);
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Device device = DBHelper.getDevice(getDevice(), session);
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User user = DBHelper.getUser(session);
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GregorianCalendar timestamp = (GregorianCalendar) startTimestamp.clone();
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for (MiBandActivitySample sample : samples) {
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sample.setDevice(device);
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sample.setUser(user);
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sample.setTimestamp((int) (timestamp.getTimeInMillis() / 1000));
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sample.setProvider(sampleProvider);
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if (LOG.isDebugEnabled()) {
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// LOG.debug("sample: " + sample);
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}
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timestamp.add(Calendar.MINUTE, 1);
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}
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sampleProvider.addGBActivitySamples(samples.toArray(new MiBandActivitySample[0]));
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saveLastSyncTimestamp(timestamp);
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LOG.info("Mi2 activity data: last sample timestamp: " + DateTimeUtils.formatDateTime(timestamp.getTime()));
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return timestamp;
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} catch (Exception ex) {
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GB.toast(getContext(), "Error saving activity samples", Toast.LENGTH_LONG, GB.ERROR);
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} finally {
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samples.clear();
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}
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}
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return null;
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}
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/**
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* Method to handle the incoming activity data.
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* There are two kind of messages we currently know:
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* - the first one is 11 bytes long and contains metadata (how many bytes to expect, when the data starts, etc.)
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* - the second one is 20 bytes long and contains the actual activity data
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* <p/>
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* The first message type is parsed by this method, for every other length of the value param, bufferActivityData is called.
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*
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* @param value
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*/
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private void handleActivityNotif(byte[] value) {
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if (!isOperationRunning()) {
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LOG.error("ignoring activity data notification because operation is not running. Data length: " + value.length);
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getSupport().logMessageContent(value);
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return;
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}
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if ((value.length % 4) == 1) {
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if ((byte) (lastPacketCounter + 1) == value[0] ) {
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lastPacketCounter++;
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bufferActivityData(value);
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} else {
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GB.toast("Error fetching activity data, invalid package counter: " + value[0], Toast.LENGTH_LONG, GB.ERROR);
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handleActivityFetchFinish();
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return;
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}
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} else {
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GB.toast("Error fetching activity data, unexpected package length: " + value.length, Toast.LENGTH_LONG, GB.ERROR);
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}
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}
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/**
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* Creates samples from the given 17-length array
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* @param value
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*/
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private void bufferActivityData(byte[] value) {
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int len = value.length;
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if (len % 4 != 1) {
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throw new AssertionError("Unexpected activity array size: " + len);
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}
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for (int i = 1; i < len; i+=4) {
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MiBandActivitySample sample = createSample(value[i], value[i + 1], value[i + 2], value[i + 3]);
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samples.add(sample);
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}
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}
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private MiBandActivitySample createSample(byte category, byte intensity, byte steps, byte heartrate) {
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MiBandActivitySample sample = new MiBandActivitySample();
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sample.setRawKind(category & 0xff);
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sample.setRawIntensity(intensity & 0xff);
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sample.setSteps(steps & 0xff);
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sample.setHeartRate(heartrate & 0xff);
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return sample;
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}
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private void handleActivityMetadata(byte[] value) {
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if (value.length == 15) {
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// first two bytes are whether our request was accepted
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if (ArrayUtils.equals(value, MiBand2Service.RESPONSE_ACTIVITY_DATA_START_DATE_SUCCESS, 0)) {
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// the third byte (0x01 on success) = ?
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// the 4th - 7th bytes probably somehow represent the number of bytes/packets to expect
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// last 8 bytes are the start date
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Calendar startTimestamp = getSupport().fromTimeBytes(org.apache.commons.lang3.ArrayUtils.subarray(value, 7, value.length));
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setStartTimestamp(startTimestamp);
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GB.toast(getContext().getString(R.string.FetchActivityOperation_about_to_transfer_since,
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DateFormat.getDateTimeInstance().format(startTimestamp.getTime())), Toast.LENGTH_LONG, GB.INFO);
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} else {
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LOG.warn("Unexpected activity metadata: " + Logging.formatBytes(value));
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handleActivityFetchFinish();
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}
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} else if (value.length == 3) {
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if (Arrays.equals(MiBand2Service.RESPONSE_FINISH_SUCCESS, value)) {
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handleActivityFetchFinish();
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} else {
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LOG.warn("Unexpected activity metadata: " + Logging.formatBytes(value));
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handleActivityFetchFinish();
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}
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}
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}
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private void setStartTimestamp(Calendar startTimestamp) {
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this.startTimestamp = startTimestamp;
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}
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}
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