package de.dennisguse.opentracks.stats;

import androidx.test.ext.junit.runners.AndroidJUnit4;

import org.junit.Ignore;
import org.junit.Test;
import org.junit.runner.RunWith;

import java.time.Duration;
import java.time.Instant;

import de.dennisguse.opentracks.content.data.TestDataUtil;
import de.dennisguse.opentracks.content.data.Track;
import de.dennisguse.opentracks.content.data.TrackPoint;

import static org.junit.Assert.assertEquals;

@RunWith(AndroidJUnit4.class)
public class TrackStatisticsUpdaterTest {

    private static final int GPS_DISTANCE = 50;

    @Test
    public void addTrackPoint_TestingTrack() {
        // given
        TestDataUtil.TrackData data = TestDataUtil.createTestingTrack(new Track.Id(1));

        // when
        TrackStatisticsUpdater subject = new TrackStatisticsUpdater();
        data.trackPoints.forEach(it -> subject.addTrackPoint(it, GPS_DISTANCE));

        // then
        TrackStatistics statistics = subject.getTrackStatistics();
        assertEquals(85.35, statistics.getTotalDistance(), 0.01);
        assertEquals(Duration.ofMillis(13999), statistics.getTotalTime());
        assertEquals(Duration.ofSeconds(6), statistics.getMovingTime());

        assertEquals(2.5, statistics.getMinElevation(), 0.01);
        assertEquals(27.5, statistics.getMaxElevation(), 0.01);
        assertEquals(27, statistics.getTotalElevationGain(), 0.01);
        assertEquals(27.0, statistics.getTotalElevationLoss(), 0.01);

        assertEquals(14.226, statistics.getMaxSpeed(), 0.01);
        assertEquals(14.226, statistics.getAverageMovingSpeed(), 0.01);
        assertEquals(6.566, statistics.getAverageSpeed(), 0.01);
    }

    @Test
    public void addTrackPoint_distance_from_GPS_not_moving() {
        // given
        TrackStatisticsUpdater subject = new TrackStatisticsUpdater();

        TrackPoint tp1 = new TrackPoint(TrackPoint.Type.SEGMENT_START_MANUAL, Instant.ofEpochMilli(1000));
        TrackPoint tp2 = new TrackPoint(0, 0, 5.0, Instant.ofEpochMilli(2000));
        TrackPoint tp3 = new TrackPoint(0.00001, 0, 5.0, Instant.ofEpochMilli(3000));

        // when
        subject.addTrackPoint(tp1, GPS_DISTANCE);
        subject.addTrackPoint(tp2, GPS_DISTANCE);
        subject.addTrackPoint(tp3, GPS_DISTANCE);

        // then
        assertEquals(0, subject.getTrackStatistics().getTotalDistance(), 0.01);
    }

    @Test
    public void addTrackPoint_distance_from_GPS_moving() {
        // given
        TrackStatisticsUpdater subject = new TrackStatisticsUpdater();

        TrackPoint tp1 = new TrackPoint(TrackPoint.Type.SEGMENT_START_MANUAL, Instant.ofEpochMilli(1000));
        TrackPoint tp2 = new TrackPoint(0, 0, 5.0, Instant.ofEpochMilli(2000));
        TrackPoint tp3 = new TrackPoint(0.00001, 0, 5.0, Instant.ofEpochMilli(3000));
        tp3.setSpeed(5f);

        // when
        subject.addTrackPoint(tp1, GPS_DISTANCE);
        subject.addTrackPoint(tp2, GPS_DISTANCE);
        subject.addTrackPoint(tp3, GPS_DISTANCE);

        // then
        assertEquals(1.10, subject.getTrackStatistics().getTotalDistance(), 0.01);
    }

    @Test
    public void addTrackPoint_distance_from_GPS_moving_and_sensor_moving() {
        // given
        TrackStatisticsUpdater subject = new TrackStatisticsUpdater();

        TrackPoint tp1 = new TrackPoint(TrackPoint.Type.SEGMENT_START_MANUAL, Instant.ofEpochMilli(1000));
        TrackPoint tp2 = new TrackPoint(0, 0, 5.0, Instant.ofEpochMilli(2000));
        tp2.setSpeed(5f);
        TrackPoint tp3 = new TrackPoint(0.001, 0, 5.0, Instant.ofEpochMilli(3000));
        tp2.setSpeed(5f);
        TrackPoint tp4 = new TrackPoint(0.001, 0, 5.0, Instant.ofEpochMilli(4000));
        tp2.setSpeed(5f);
        tp4.setSensorDistance(5f);
        TrackPoint tp5 = new TrackPoint(TrackPoint.Type.SEGMENT_END_MANUAL, Instant.ofEpochMilli(5000));
        tp5.setSensorDistance(10f);

        // when
        subject.addTrackPoint(tp1, GPS_DISTANCE);
        subject.addTrackPoint(tp2, GPS_DISTANCE);
        subject.addTrackPoint(tp3, GPS_DISTANCE);

        // then
        assertEquals(110.57, subject.getTrackStatistics().getTotalDistance(), 0.01);

        // when
        subject.addTrackPoint(tp4, GPS_DISTANCE);
        subject.addTrackPoint(tp5, GPS_DISTANCE);

        // then
        assertEquals(125.57, subject.getTrackStatistics().getTotalDistance(), 0.01);
    }

    @Test
    public void addTrackPoint_distance_from_GPS_not_moving_and_sensor_moving() {
        // given
        TrackStatisticsUpdater subject = new TrackStatisticsUpdater();

        TrackPoint tp1 = new TrackPoint(TrackPoint.Type.SEGMENT_START_MANUAL, Instant.ofEpochMilli(1000));
        TrackPoint tp2 = new TrackPoint(0, 0, 5.0, Instant.ofEpochMilli(2000));
        TrackPoint tp3 = new TrackPoint(0.00001, 0, 5.0, Instant.ofEpochMilli(3000));
        TrackPoint tp4 = new TrackPoint(0.00001, 0, 5.0, Instant.ofEpochMilli(4000));
        tp4.setSensorDistance(5f);
        TrackPoint tp5 = new TrackPoint(TrackPoint.Type.SEGMENT_END_MANUAL, Instant.ofEpochMilli(5000));
        tp5.setSensorDistance(10f);

        // when
        subject.addTrackPoint(tp1, GPS_DISTANCE);
        subject.addTrackPoint(tp2, GPS_DISTANCE);
        subject.addTrackPoint(tp3, GPS_DISTANCE);

        // then
        assertEquals(0, subject.getTrackStatistics().getTotalDistance(), 0.01);

        // when
        subject.addTrackPoint(tp4, GPS_DISTANCE);
        subject.addTrackPoint(tp5, GPS_DISTANCE);

        // then
        assertEquals(15, subject.getTrackStatistics().getTotalDistance(), 0.01);
    }

    @Ignore("TODO: create a concept ont to compute speed from GPS and sensor")
    @Test
    public void addTrackPoint_speed_from_GPS_not_moving() {
    }

    @Ignore("TODO: create a concept ont to compute speed from GPS and sensor")
    @Test
    public void addTrackPoint_speed_from_GPS_moving() {
    }

    @Ignore("TODO: create a concept ont to compute speed from GPS and sensor")
    @Test
    public void addTrackPoint_speed_from_GPS_not_moving_and_sensor_speed() {
    }

    @Ignore("TODO: create a concept ont to compute speed from GPS and sensor")
    @Test
    public void addTrackPoint_speed_from_GPS_moving_and_sensor_speed() {
    }
}