package info.nightscout.androidaps.db;

/**
 * Created by mike on 21.05.2017.
 */

import com.j256.ormlite.field.DatabaseField;
import com.j256.ormlite.table.DatabaseTable;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.Date;

import info.nightscout.androidaps.Constants;
import info.nightscout.androidaps.MainApp;
import info.nightscout.androidaps.data.Iob;
import info.nightscout.androidaps.data.IobTotal;
import info.nightscout.androidaps.interfaces.InsulinInterface;
import info.nightscout.androidaps.interfaces.Interval;
import info.nightscout.androidaps.plugins.ConfigBuilder.ConfigBuilderPlugin;
import info.nightscout.androidaps.data.Profile;
import info.nightscout.utils.DateUtil;
import info.nightscout.utils.DecimalFormatter;
import info.nightscout.utils.Round;

/**
 * Created by mike on 21.05.2017.
 */

@DatabaseTable(tableName = DatabaseHelper.DATABASE_EXTENDEDBOLUSES)
public class ExtendedBolus implements Interval {
    private static Logger log = LoggerFactory.getLogger(ExtendedBolus.class);

    @DatabaseField(id = true)
    public long date;

    @DatabaseField
    public boolean isValid = true;

    @DatabaseField
    public int source = Source.NONE;
    @DatabaseField
    public String _id = null; // NS _id

    @DatabaseField
    public double insulin = 0d;
    @DatabaseField
    public int durationInMinutes = 0; // duration == 0 means end of extended bolus

    @DatabaseField
    public int insulinInterfaceID = InsulinInterface.FASTACTINGINSULIN;
    @DatabaseField
    public double dia = Constants.defaultDIA;


    // -------- Interval interface ---------

    Long cuttedEnd = null;

    public long durationInMsec() {
        return durationInMinutes * 60 * 1000L;
    }

    public long start() {
        return date;
    }

    // planned end time at time of creation
    public long originalEnd() {
        return date + durationInMinutes * 60 * 1000L;
    }

    // end time after cut
    public long end() {
        if (cuttedEnd != null)
            return cuttedEnd;
        return originalEnd();
    }

    public void cutEndTo(long end) {
        cuttedEnd = end;
    }

    public boolean match(long time) {
        if (start() <= time && end() >= time)
            return true;
        return false;
    }

    public boolean before(long time) {
        if (end() < time)
            return true;
        return false;
    }

    public boolean after(long time) {
        if (start() > time)
            return true;
        return false;
    }

    @Override
    public boolean isInProgress() {
        return match(new Date().getTime());
    }

    @Override
    public boolean isEndingEvent() {
        return durationInMinutes == 0;
    }

    // -------- Interval interface end ---------

    public String log() {
        return "Bolus{" +
                "date= " + date +
                ", date= " + DateUtil.dateAndTimeString(date) +
                ", isValid=" + isValid +
                ", _id= " + _id +
                ", insulin= " + insulin +
                ", durationInMinutes= " + durationInMinutes +
                "}";
    }

    public double absoluteRate() {
        return Round.roundTo(insulin / durationInMinutes * 60, 0.01);
    }

    public double insulinSoFar() {
        return absoluteRate() * getRealDuration() / 60d;
    }

    public IobTotal iobCalc(long time) {
        IobTotal result = new IobTotal(time);
        Profile profile = MainApp.getConfigBuilder().getProfile(time);
        InsulinInterface insulinInterface = ConfigBuilderPlugin.getActiveInsulin();

        if (profile == null)
            return result;

        int realDuration = getDurationToTime(time);

        if (realDuration > 0) {
            Double dia_ago = time - profile.getDia() * 60 * 60 * 1000;
            int aboutFiveMinIntervals = (int) Math.ceil(realDuration / 5d);
            double spacing = realDuration / aboutFiveMinIntervals;

            for (Long j = 0L; j < aboutFiveMinIntervals; j++) {
                // find middle of the interval
                Long calcdate = (long) (date + j * spacing * 60 * 1000 + 0.5d * spacing * 60 * 1000);

                if (calcdate > dia_ago && calcdate <= time) {
                    double tempBolusSize = absoluteRate() * spacing / 60d;

                    Treatment tempBolusPart = new Treatment(insulinInterface);
                    tempBolusPart.insulin = tempBolusSize;
                    tempBolusPart.date = calcdate;

                    Iob aIOB = insulinInterface.iobCalcForTreatment(tempBolusPart, time, profile.getDia());
                    result.iob += aIOB.iobContrib;
                    result.activity += aIOB.activityContrib;
                    result.extendedBolusInsulin += tempBolusPart.insulin;
                }
            }
        }
        return result;
    }

    public int getRealDuration() {
        return getDurationToTime(new Date().getTime());
    }

    private int getDurationToTime(long time) {
        long endTime = Math.min(time, end());
        long msecs = endTime - date;
        return Math.round(msecs / 60f / 1000);
    }

    public int getPlannedRemainingMinutes() {
        float remainingMin = (end() - new Date().getTime()) / 1000f / 60;
        return (remainingMin < 0) ? 0 : Math.round(remainingMin);
    }

    public String toString() {
        return "E " + DecimalFormatter.to2Decimal(absoluteRate()) + "U/h @" +
                DateUtil.timeString(date) +
                " " + getRealDuration() + "/" + durationInMinutes + "min";
    }

    public String toStringShort() {
        return "E " + DecimalFormatter.to2Decimal(absoluteRate()) + "U/h ";
    }

    public String toStringMedium() {
        return "E " + DecimalFormatter.to2Decimal(absoluteRate()) + "U/h ("
                + getRealDuration() + "/" + durationInMinutes + ") ";
    }
}