package name.abuchen.portfolio.ui.views.dashboard;

import java.text.MessageFormat;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.time.format.FormatStyle;

import name.abuchen.portfolio.math.Risk.Drawdown;
import name.abuchen.portfolio.model.Dashboard.Widget;
import name.abuchen.portfolio.snapshot.PerformanceIndex;
import name.abuchen.portfolio.ui.Messages;
import name.abuchen.portfolio.ui.util.InfoToolTip;
import name.abuchen.portfolio.util.Interval;

public class MaxDrawdownDurationWidget extends AbstractIndicatorWidget
{
    private DateTimeFormatter formatter = DateTimeFormatter.ofLocalizedDate(FormatStyle.LONG)
                    .withZone(ZoneId.systemDefault());

    public MaxDrawdownDurationWidget(Widget widget, DashboardData dashboardData)
    {
        super(widget, dashboardData, true);
    }

    @Override
    public void update()
    {
        super.update();

        PerformanceIndex index = getDashboardData().getDataSeriesCache().lookup(
                        get(DataSeriesConfig.class).getDataSeries(),
                        get(ReportingPeriodConfig.class).getReportingPeriod());

        Drawdown drawdown = index.getDrawdown();
        Interval maxDDDuration = drawdown.getMaxDrawdownDuration();
        indicator.setText(MessageFormat.format(Messages.LabelXDays, maxDDDuration.getDays()));

        boolean isUntilEndOfPeriod = maxDDDuration.getEnd().equals(index.getReportInterval().getEndDate());
        String maxDDSupplement = isUntilEndOfPeriod ? Messages.TooltipMaxDrawdownDurationEndOfPeriod
                        : Messages.TooltipMaxDrawdownDurationFromXtoY;

        // recovery time
        Interval recoveryTime = drawdown.getLongestRecoveryTime();
        isUntilEndOfPeriod = recoveryTime.getEnd().equals(index.getReportInterval().getEndDate());
        String recoveryTimeSupplement = isUntilEndOfPeriod ? Messages.TooltipMaxDrawdownDurationEndOfPeriod
                        : Messages.TooltipMaxDrawdownDurationFromXtoY;

        InfoToolTip.attach(indicator, Messages.TooltipMaxDrawdownDuration + "\n\n" //$NON-NLS-1$
                        + MessageFormat.format(maxDDSupplement, formatter.format(maxDDDuration.getStart()),
                                        formatter.format(maxDDDuration.getEnd()))
                        + "\n\n" //$NON-NLS-1$
                        + MessageFormat.format(Messages.TooltipMaxDurationLowToHigh, recoveryTime.getDays())
                        + MessageFormat.format(recoveryTimeSupplement, formatter.format(recoveryTime.getStart()),
                                        formatter.format(recoveryTime.getEnd())));
    }

}