/*
 * Copyright (C) 2018 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package android.cts.statsd.validation;

import static com.google.common.truth.Truth.assertThat;
import static com.google.common.truth.Truth.assertWithMessage;

import android.cts.statsd.atom.DeviceAtomTestCase;
import android.os.BatteryStatsProto;
import android.os.UidProto;
import android.os.UidProto.Package;
import android.os.UidProto.Package.Service;

import com.android.internal.os.StatsdConfigProto.StatsdConfig;
import com.android.os.AtomsProto.Atom;
import com.android.os.AtomsProto.DeviceCalculatedPowerBlameUid;
import com.android.os.StatsLog.DimensionsValue;
import com.android.os.StatsLog.CountMetricData;
import com.android.tradefed.log.LogUtil;
import com.android.tradefed.log.LogUtil.CLog;

import java.util.List;

/**
 * Side-by-side comparison between statsd and batterystats.
 */
public class BatteryStatsValidationTests extends DeviceAtomTestCase {

    private static final String TAG = "Statsd.BatteryStatsValidationTests";

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        resetBatteryStatus();
        unplugDevice();
    }

    @Override
    protected void tearDown() throws Exception {
        plugInUsb();
        super.tearDown();
    }

    /*
    public void testConnectivityStateChange() throws Exception {
        if (!hasFeature(FEATURE_WIFI, true)) return;
        if (!hasFeature(FEATURE_WATCH, false)) return;
        if (!hasFeature(FEATURE_LEANBACK_ONLY, false)) return;
        final String fileName = "BATTERYSTATS_CONNECTIVITY_STATE_CHANGE_COUNT.pbtxt";
        StatsdConfig config = createValidationUtil().getConfig(fileName);
        LogUtil.CLog.d("Updating the following config:\n" + config.toString());
        uploadConfig(config);

        Thread.sleep(WAIT_TIME_SHORT);

        turnOnAirplaneMode();
        turnOffAirplaneMode();
        // wait for long enough for device to restore connection
        Thread.sleep(13_000);

        BatteryStatsProto batterystatsProto = getBatteryStatsProto();
        List<CountMetricData> countMetricData = getCountMetricDataList();
        assertThat(countMetricData).hasSize(1);
        assertThat(countMetricData.get(0).getBucketInfoCount()).isEqualTo(1);
        assertThat(countMetricData.get(0).getBucketInfo(0).getCount()).isAtLeast(2L);
        assertThat(countMetricData.get(0).getBucketInfo(0).getCount()).isEqualTo(
                (long) batterystatsProto.getSystem().getMisc().getNumConnectivityChanges());
    }
    */

    public void testPowerUse() throws Exception {
        if (!hasFeature(FEATURE_LEANBACK_ONLY, false)) return;
        resetBatteryStats();
        unplugDevice();

        final double ALLOWED_FRACTIONAL_DIFFERENCE = 0.7; // ratio that statsd and bs can differ

        StatsdConfig.Builder config = createConfigBuilder();
        addGaugeAtomWithDimensions(config, Atom.DEVICE_CALCULATED_POWER_USE_FIELD_NUMBER, null);
        uploadConfig(config);
        unplugDevice();

        Thread.sleep(WAIT_TIME_LONG);
        runDeviceTests(DEVICE_SIDE_TEST_PACKAGE, ".AtomTests", "testSimpleCpu");
        Thread.sleep(WAIT_TIME_LONG);

        setAppBreadcrumbPredicate();
        BatteryStatsProto batterystatsProto = getBatteryStatsProto();
        Thread.sleep(WAIT_TIME_LONG);
        List<Atom> atomList = getGaugeMetricDataList();

        // Extract statsd data
        Atom atom = atomList.get(0);
        long statsdPowerNas = atom.getDeviceCalculatedPowerUse().getComputedPowerNanoAmpSecs();
        assertThat(statsdPowerNas).isGreaterThan(0L);

        // Extract BatteryStats data
        double bsPowerNas = batterystatsProto.getSystem().getPowerUseSummary().getComputedPowerMah()
                * 1_000_000L * 3600L; /* mAh to nAs */
        assertThat(bsPowerNas).isGreaterThan(0d);

        assertThat((double) statsdPowerNas)
                .isGreaterThan(ALLOWED_FRACTIONAL_DIFFERENCE * bsPowerNas);
        assertThat(bsPowerNas).isGreaterThan(ALLOWED_FRACTIONAL_DIFFERENCE * statsdPowerNas);
    }

    public void testServiceStartCount() throws Exception {
        final String fileName = "BATTERYSTATS_SERVICE_START_COUNT.pbtxt";
        StatsdConfig config = createValidationUtil().getConfig(fileName);
        LogUtil.CLog.d("Updating the following config:\n" + config.toString());
        uploadConfig(config);

        Thread.sleep(WAIT_TIME_SHORT);

        runDeviceTests(DEVICE_SIDE_TEST_PACKAGE, ".AtomTests", "testForegroundService");

        BatteryStatsProto batterystatsProto = getBatteryStatsProto();
        List<CountMetricData> countMetricData = getCountMetricDataList();
        assertThat(countMetricData).isNotEmpty();
        int uid = getUid();
        long countFromStatsd = 0;
        for (CountMetricData data : countMetricData) {
            List<DimensionsValue> dims = data.getDimensionLeafValuesInWhatList();
            if (dims.get(0).getValueInt() == uid) {
                assertThat(dims.get(1).getValueStr()).isEqualTo(DEVICE_SIDE_TEST_PACKAGE);
                assertThat(dims.get(2).getValueStr())
                        .isEqualTo(DEVICE_SIDE_TEST_FOREGROUND_SERVICE_NAME);
                countFromStatsd = data.getBucketInfo(0).getCount();
                assertThat(countFromStatsd).isGreaterThan(0L);
            }
        }
        long countFromBS = 0;
        for (UidProto uidProto : batterystatsProto.getUidsList()) {
            if (uidProto.getUid() == uid) {
                for (Package pkg : uidProto.getPackagesList()) {
                    if (pkg.getName().equals(DEVICE_SIDE_TEST_PACKAGE)) {
                        for (Service svc : pkg.getServicesList()) {
                            if (svc.getName().equals(DEVICE_SIDE_TEST_FOREGROUND_SERVICE_NAME)) {
                                countFromBS = svc.getStartCount();
                                assertThat(countFromBS).isGreaterThan(0L);
                            }
                        }
                    }
                }
            }
        }
        assertThat(countFromStatsd).isGreaterThan(0L);
        assertThat(countFromBS).isGreaterThan(0L);
        assertThat(countFromBS).isEqualTo(countFromStatsd);
    }

    public void testServiceLaunchCount() throws Exception {
        final String fileName = "BATTERYSTATS_SERVICE_LAUNCH_COUNT.pbtxt";
        StatsdConfig config = createValidationUtil().getConfig(fileName);
        LogUtil.CLog.d("Updating the following config:\n" + config.toString());
        uploadConfig(config);

        Thread.sleep(WAIT_TIME_SHORT);

        runDeviceTests(DEVICE_SIDE_TEST_PACKAGE, ".AtomTests", "testForegroundService");

        BatteryStatsProto batterystatsProto = getBatteryStatsProto();
        List<CountMetricData> countMetricData = getCountMetricDataList();
        assertThat(countMetricData).isNotEmpty();
        int uid = getUid();
        long countFromStatsd = 0;
        for (CountMetricData data : countMetricData) {
            List<DimensionsValue> dims = data.getDimensionLeafValuesInWhatList();
            if (dims.get(0).getValueInt() == uid) {
                assertThat(dims.get(1).getValueStr()).isEqualTo(DEVICE_SIDE_TEST_PACKAGE);
                assertThat(dims.get(2).getValueStr())
                        .isEqualTo(DEVICE_SIDE_TEST_FOREGROUND_SERVICE_NAME);
                countFromStatsd = data.getBucketInfo(0).getCount();
                assertThat(countFromStatsd).isGreaterThan(0L);
            }
        }
        long countFromBS = 0;
        for (UidProto uidProto : batterystatsProto.getUidsList()) {
            if (uidProto.getUid() == uid) {
                for (Package pkg : uidProto.getPackagesList()) {
                    if (pkg.getName().equals(DEVICE_SIDE_TEST_PACKAGE)) {
                        for (Service svc : pkg.getServicesList()) {
                            if (svc.getName().equals(DEVICE_SIDE_TEST_FOREGROUND_SERVICE_NAME)) {
                                countFromBS = svc.getLaunchCount();
                                assertThat(countFromBS).isGreaterThan(0L);
                            }
                        }
                    }
                }
            }
        }
        assertThat(countFromStatsd).isGreaterThan(0L);
        assertThat(countFromBS).isGreaterThan(0L);
        assertThat(countFromBS).isEqualTo(countFromStatsd);
    }
}