/*  Copyright (C) 2015-2021 Andreas Shimokawa, Carsten Pfeiffer, Daniele
    Gobbetti, Dmitry Markin, José Rebelo, Matthieu Baerts, Nephiel, Petr Vaněk,
    Taavi Eomäe

    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.devices;

import static nodomain.freeyourgadget.gadgetbridge.GBApplication.getPrefs;

import android.app.Activity;
import android.bluetooth.BluetoothClass;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.le.ScanFilter;
import android.content.Context;
import android.net.Uri;

import androidx.annotation.DrawableRes;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;

import org.apache.commons.lang3.ArrayUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.File;
import java.io.IOException;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.EnumSet;
import java.util.List;
import java.util.regex.Pattern;

import de.greenrobot.dao.query.QueryBuilder;
import nodomain.freeyourgadget.gadgetbridge.GBApplication;
import nodomain.freeyourgadget.gadgetbridge.GBException;
import nodomain.freeyourgadget.gadgetbridge.R;
import nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSpecificSettingsCustomizer;
import nodomain.freeyourgadget.gadgetbridge.capabilities.HeartRateCapability;
import nodomain.freeyourgadget.gadgetbridge.capabilities.password.PasswordCapabilityImpl;
import nodomain.freeyourgadget.gadgetbridge.capabilities.widgets.WidgetManager;
import nodomain.freeyourgadget.gadgetbridge.database.DBHandler;
import nodomain.freeyourgadget.gadgetbridge.database.DBHelper;
import nodomain.freeyourgadget.gadgetbridge.devices.miband.MiBandConst;
import nodomain.freeyourgadget.gadgetbridge.entities.AlarmDao;
import nodomain.freeyourgadget.gadgetbridge.entities.BatteryLevelDao;
import nodomain.freeyourgadget.gadgetbridge.entities.DaoSession;
import nodomain.freeyourgadget.gadgetbridge.entities.Device;
import nodomain.freeyourgadget.gadgetbridge.entities.DeviceAttributesDao;
import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
import nodomain.freeyourgadget.gadgetbridge.impl.GBDeviceCandidate;
import nodomain.freeyourgadget.gadgetbridge.model.AbstractNotificationPattern;
import nodomain.freeyourgadget.gadgetbridge.model.ActivitySample;
import nodomain.freeyourgadget.gadgetbridge.model.ActivitySummaryParser;
import nodomain.freeyourgadget.gadgetbridge.model.BatteryConfig;
import nodomain.freeyourgadget.gadgetbridge.model.DeviceType;
import nodomain.freeyourgadget.gadgetbridge.model.HeartRateSample;
import nodomain.freeyourgadget.gadgetbridge.model.PaiSample;
import nodomain.freeyourgadget.gadgetbridge.model.SleepRespiratoryRateSample;
import nodomain.freeyourgadget.gadgetbridge.model.Spo2Sample;
import nodomain.freeyourgadget.gadgetbridge.model.StressSample;
import nodomain.freeyourgadget.gadgetbridge.model.TemperatureSample;
import nodomain.freeyourgadget.gadgetbridge.service.ServiceDeviceSupport;
import nodomain.freeyourgadget.gadgetbridge.util.Prefs;

public abstract class AbstractDeviceCoordinator implements DeviceCoordinator {
    private static final Logger LOG = LoggerFactory.getLogger(AbstractDeviceCoordinator.class);

    private Pattern supportedDeviceName = null;
    /**
     * This method should return a ReGexp pattern that will matched against a found device
     * to check whether this coordinator supports that device.
     * If more sophisticated logic is needed to determine device support, the supports(GBDeviceCandidate)
     * should be overridden.
     *
     * @return Pattern
     * */
    protected Pattern getSupportedDeviceName(){
        return null;
    }

    @Override
    public boolean supports(GBDeviceCandidate candidate) {
        if(supportedDeviceName == null){
            supportedDeviceName = getSupportedDeviceName();
        }
        if(supportedDeviceName == null){
            throw new RuntimeException(getClass() + " should either override getSupportedDeviceName or supports(GBDeviceCandidate)");
        }

        return supportedDeviceName.matcher(candidate.getName()).matches();
    }

    @Override
    public ConnectionType getConnectionType() {
        return ConnectionType.BOTH;
    }

    @NonNull
    @Override
    public Collection<? extends ScanFilter> createBLEScanFilters() {
        return Collections.emptyList();
    }

    @Override
    public GBDevice createDevice(GBDeviceCandidate candidate, DeviceType deviceType) {
        GBDevice gbDevice = new GBDevice(candidate.getDevice().getAddress(), candidate.getName(), null, null, deviceType);
        for (BatteryConfig batteryConfig : getBatteryConfig()) {
            gbDevice.setBatteryIcon(batteryConfig.getBatteryIcon(), batteryConfig.getBatteryIndex());
            gbDevice.setBatteryLabel(batteryConfig.getBatteryLabel(), batteryConfig.getBatteryIndex());
        }
        return gbDevice;
    }

    @Override
    public final void deleteDevice(final GBDevice gbDevice) throws GBException {
        LOG.info("will try to delete device: " + gbDevice.getName());
        if (gbDevice.isConnected() || gbDevice.isConnecting()) {
            GBApplication.deviceService(gbDevice).disconnect();
        }
        Prefs prefs = getPrefs();

        String lastDevice = prefs.getPreferences().getString("last_device_address", "");
        if (gbDevice.getAddress().equals(lastDevice)) {
            LOG.debug("#1605 removing last device");
            prefs.getPreferences().edit().remove("last_device_address").apply();
        }

        String macAddress = prefs.getPreferences().getString(MiBandConst.PREF_MIBAND_ADDRESS, "");
        if (gbDevice.getAddress().equals(macAddress)) {
            LOG.debug("#1605 removing devel miband");
            prefs.getPreferences().edit().remove(MiBandConst.PREF_MIBAND_ADDRESS).apply();
        }

        GBApplication.deleteDeviceSpecificSharedPrefs(gbDevice.getAddress());

        try (DBHandler dbHandler = GBApplication.acquireDB()) {
            DaoSession session = dbHandler.getDaoSession();
            Device device = DBHelper.findDevice(gbDevice, session);
            if (device != null) {
                deleteDevice(gbDevice, device, session);
                QueryBuilder<?> qb = session.getDeviceAttributesDao().queryBuilder();
                qb.where(DeviceAttributesDao.Properties.DeviceId.eq(device.getId())).buildDelete().executeDeleteWithoutDetachingEntities();
                QueryBuilder<?> batteryLevelQueryBuilder = session.getBatteryLevelDao().queryBuilder();
                batteryLevelQueryBuilder.where(BatteryLevelDao.Properties.DeviceId.eq(device.getId())).buildDelete().executeDeleteWithoutDetachingEntities();
                QueryBuilder<?> alarmDeviceQueryBuilder = session.getAlarmDao().queryBuilder();
                alarmDeviceQueryBuilder.where(AlarmDao.Properties.DeviceId.eq(device.getId())).buildDelete().executeDeleteWithoutDetachingEntities();
                session.getDeviceDao().delete(device);
            } else {
                LOG.info("device to delete not found in db: " + gbDevice);
            }
        } catch (Exception e) {
            throw new GBException("Error deleting device: " + e.getMessage(), e);
        }
    }

    /**
     * Hook for subclasses to perform device-specific deletion logic, e.g. db cleanup.
     *
     * @param gbDevice the GBDevice
     * @param device   the corresponding database Device
     * @param session  the session to use
     * @throws GBException
     */
    protected abstract void deleteDevice(@NonNull GBDevice gbDevice, @NonNull Device device, @NonNull DaoSession session) throws GBException;

    @Override
    public boolean allowFetchActivityData(GBDevice device) {
        return device.isInitialized() && !device.isBusy() && supportsActivityDataFetching();
    }

    @Override
    public SampleProvider<? extends ActivitySample> getSampleProvider(final GBDevice device, final DaoSession session) {
        return null;
    }

    @Override
    public TimeSampleProvider<? extends StressSample> getStressSampleProvider(GBDevice device, DaoSession session) {
        return null;
    }

    @Override
    public TimeSampleProvider<? extends TemperatureSample> getTemperatureSampleProvider(GBDevice device, DaoSession session) {
        return null;
    }

    @Override
    public TimeSampleProvider<? extends Spo2Sample> getSpo2SampleProvider(GBDevice device, DaoSession session) {
        return null;
    }

    @Override
    public TimeSampleProvider<? extends HeartRateSample> getHeartRateMaxSampleProvider(GBDevice device, DaoSession session) {
        return null;
    }

    @Override
    public TimeSampleProvider<? extends HeartRateSample> getHeartRateRestingSampleProvider(GBDevice device, DaoSession session) {
        return null;
    }

    @Override
    public TimeSampleProvider<? extends HeartRateSample> getHeartRateManualSampleProvider(GBDevice device, DaoSession session) {
        return null;
    }

    @Override
    public TimeSampleProvider<? extends PaiSample> getPaiSampleProvider(GBDevice device, DaoSession session) {
        return null;
    }

    @Override
    public TimeSampleProvider<? extends SleepRespiratoryRateSample> getSleepRespiratoryRateSampleProvider(GBDevice device, DaoSession session) {
        return null;
    }

    @Override
    @Nullable
    public ActivitySummaryParser getActivitySummaryParser(final GBDevice device) {
        return null;
    }

    public boolean isHealthWearable(BluetoothDevice device) {
        BluetoothClass bluetoothClass;
        try {
            bluetoothClass = device.getBluetoothClass();
        } catch (SecurityException se) {
            LOG.warn("missing bluetooth permission: ", se);
            return false;
        }
        if (bluetoothClass == null) {
            LOG.warn("unable to determine bluetooth device class of " + device);
            return false;
        }
        if (bluetoothClass.getMajorDeviceClass() == BluetoothClass.Device.Major.WEARABLE
                || bluetoothClass.getMajorDeviceClass() == BluetoothClass.Device.Major.UNCATEGORIZED) {
            int deviceClasses =
                    BluetoothClass.Device.HEALTH_BLOOD_PRESSURE
                            | BluetoothClass.Device.HEALTH_DATA_DISPLAY
                            | BluetoothClass.Device.HEALTH_PULSE_RATE
                            | BluetoothClass.Device.HEALTH_WEIGHING
                            | BluetoothClass.Device.HEALTH_UNCATEGORIZED
                            | BluetoothClass.Device.HEALTH_PULSE_OXIMETER
                            | BluetoothClass.Device.HEALTH_GLUCOSE;

            return (bluetoothClass.getDeviceClass() & deviceClasses) != 0;
        }
        return false;
    }

    @Override
    public File getAppCacheDir() throws IOException {
        return null;
    }

    @Override
    public String getAppCacheSortFilename() {
        return null;
    }

    @Override
    public String getAppFileExtension() {
        return null;
    }

    @Override
    public boolean supportsAppListFetching() {
        return false;
    }

    @Override
    public boolean supportsFlashing() { return false; }

    @Nullable
    @Override
    public InstallHandler findInstallHandler(final Uri uri, final Context context) {
        return null;
    }

    @Override
    public boolean supportsScreenshots() {
        return false;
    }

    @Override
    public int getAlarmSlotCount(final GBDevice device) {
        return 0;
    }

    @Override
    public boolean supportsSmartWakeup(final GBDevice device) {
        return false;
    }

    @Override
    public boolean supportsAppReordering() {
        return false;
    }

    @Override
    public boolean supportsAppsManagement(final GBDevice device) {
        return false;
    }

    @Override
    public boolean supportsCachedAppManagement(final GBDevice device) {
        try {
            return supportsAppsManagement(device) && getAppCacheDir() != null;
        } catch (final Exception e) {
            // we failed, but still tried, so it's supported..
            LOG.error("Failed to get app cache dir", e);
            return true;
        }
    }

    @Override
    public boolean supportsInstalledAppManagement(final GBDevice device) {
        return supportsAppsManagement(device);
    }

    @Override
    public boolean supportsWatchfaceManagement(final GBDevice device) {
        return supportsAppsManagement(device);
    }

    @Nullable
    @Override
    public Class<? extends Activity> getAppsManagementActivity() {
        return null;
    }

    @Nullable
    @Override
    public Class<? extends Activity> getWatchfaceDesignerActivity() {
        return null;
    }

    @Override
    public int getBondingStyle() {
        return BONDING_STYLE_ASK;
    }

    @Override
    public boolean isExperimental() {
        return false;
    }

    @Override
    public boolean supportsCalendarEvents() {
        return false;
    }

    @Override
    public boolean supportsActivityDataFetching() {
        return false;
    }

    @Override
    public boolean supportsActivityTracking() {
        return false;
    }

    @Override
    public boolean supportsActivityTracks() {
        return false;
    }

    @Override
    public boolean supportsStressMeasurement() {
        return false;
    }

    @Override
    public boolean supportsSpo2() {
        return false;
    }

    @Override
    public boolean supportsHeartRateStats() {
        return false;
    }

    @Override
    public boolean supportsPai() {
        return false;
    }

    @Override
    public boolean supportsSleepRespiratoryRate() {
        return false;
    }

    @Override
    public boolean supportsAlarmSnoozing() {
        return false;
    }

    @Override
    public boolean supportsAlarmDescription(GBDevice device) {
        return false;
    }

    @Override
    public boolean supportsMusicInfo() {
        return false;
    }

    @Override
    public boolean supportsLedColor() {
        return false;
    }

    @Override
    public int getMaximumReminderMessageLength() {
        return 0;
    }

    @Override
    public int getReminderSlotCount(final GBDevice device) {
        return 0;
    }

    @Override
    public int getCannedRepliesSlotCount(final GBDevice device) {
        return 0;
    }

    @Override
    public int getWorldClocksSlotCount() {
        return 0;
    }

    @Override
    public int getWorldClocksLabelLength() {
        return 10;
    }

    @Override
    public boolean supportsDisabledWorldClocks() {
        return false;
    }

    @Override
    public int getContactsSlotCount(final GBDevice device) {
        return 0;
    }

    @Override
    public boolean supportsRgbLedColor() {
        return false;
    }

    @NonNull
    @Override
    public int[] getColorPresets() {
        return new int[0];
    }

    @Override
    public boolean supportsHeartRateMeasurement(final GBDevice device) {
        return false;
    }

    @Override
    public boolean supportsManualHeartRateMeasurement(final GBDevice device) {
        return supportsHeartRateMeasurement(device);
    }

    @Override
    public boolean supportsRealtimeData() {
        return false;
    }

    @Override
    public boolean supportsRemSleep() {
        return false;
    }

    @Override
    public boolean supportsWeather() {
        return false;
    }

    @Override
    public boolean supportsFindDevice() {
        return false;
    }

    @Override
    public boolean supportsUnicodeEmojis() {
        return false;
    }

    @Override
    public int[] getSupportedDeviceSpecificConnectionSettings() {
        int[] settings = new int[0];
        ConnectionType connectionType = getConnectionType();

        if(connectionType.usesBluetoothLE()){
            settings = ArrayUtils.insert(0, settings, R.xml.devicesettings_reconnect_ble);
        }
        if(connectionType.usesBluetoothClassic()){
            settings = ArrayUtils.insert(0, settings, R.xml.devicesettings_reconnect_bl_classic);
        }

        return settings;
    }
    @Override
    public int[] getSupportedDeviceSpecificApplicationSettings() {
        return new int[0];
    }

    @Override
    public int[] getSupportedDeviceSpecificSettings(GBDevice device) {
        return new int[0];
    }

    @Override
    public int[] getSupportedDeviceSpecificAuthenticationSettings() {
        return new int[0];
    }

    @Override
    public DeviceSpecificSettingsCustomizer getDeviceSpecificSettingsCustomizer(GBDevice device) {
        return null;
    }

    @Override
    public String[] getSupportedLanguageSettings(GBDevice device) {
        return null;
    }

    @Nullable
    @Override
    public Class<? extends Activity> getPairingActivity() {
        return null;
    }

    @Nullable
    @Override
    public Class<? extends Activity> getCalibrationActivity() {
        return null;
    }

    @Override
    public int getBatteryCount() {
        return 1;
    } //multiple battery support, default is 1, maximum is 3, 0 will disable the battery in UI

    @Override
    public BatteryConfig[] getBatteryConfig() {
        return new BatteryConfig[0];
    }

    @Override
    public boolean supportsPowerOff() {
        return false;
    }

    @Override
    public PasswordCapabilityImpl.Mode getPasswordCapability() {
        return PasswordCapabilityImpl.Mode.NONE;
    }

    @Override
    public List<HeartRateCapability.MeasurementInterval> getHeartRateMeasurementIntervals() {
        return Arrays.asList(
                HeartRateCapability.MeasurementInterval.OFF,
                HeartRateCapability.MeasurementInterval.MINUTES_1,
                HeartRateCapability.MeasurementInterval.MINUTES_5,
                HeartRateCapability.MeasurementInterval.MINUTES_10,
                HeartRateCapability.MeasurementInterval.MINUTES_30,
                HeartRateCapability.MeasurementInterval.HOUR_1
        );
    }

    @Override
    public boolean supportsWidgets(final GBDevice device) {
        return false;
    }

    @Nullable
    @Override
    public WidgetManager getWidgetManager(final GBDevice device) {
        return null;
    }

    public boolean supportsNavigation() {
        return false;
    }

    @Override
    public int getOrderPriority(){
        return 0;
    }

    @Override
    public EnumSet<ServiceDeviceSupport.Flags> getInitialFlags() {
        return EnumSet.of(ServiceDeviceSupport.Flags.BUSY_CHECKING);
    }

    @Override
    @DrawableRes
    public int getDefaultIconResource() {
        return R.drawable.ic_device_default;
    }

    @Override
    @DrawableRes
    public int getDisabledIconResource() {
        return R.drawable.ic_device_default_disabled;
    }

    @Override
    public boolean supportsNotificationVibrationPatterns() {
        return false;
    }

    @Override
    public boolean supportsNotificationVibrationRepetitionPatterns() {
        return false;
    }

    @Override
    public boolean supportsNotificationLedPatterns() {
        return false;
    }

    @Override
    public AbstractNotificationPattern[] getNotificationVibrationPatterns() {
        return new AbstractNotificationPattern[0];
    }

    @Override
    public AbstractNotificationPattern[] getNotificationVibrationRepetitionPatterns() {
        return new AbstractNotificationPattern[0];
    }

    @Override
    public AbstractNotificationPattern[] getNotificationLedPatterns() {
        return new AbstractNotificationPattern[0];
    }

    @Override
    public boolean validateAuthKey(final String authKey) {
        return !(authKey.getBytes().length < 34 || !authKey.startsWith("0x"));
    }
}