Logback: the reliable, generic, fast and flexible logging framework.
Copyright (C) 1999-2015, QOS.ch. All rights reserved.
This program and the accompanying materials are dual-licensed under
either the terms of the Eclipse Public License v1.0 as published by
the Eclipse Foundation
  or (per the licensee's choosing)
under the terms of the GNU Lesser General Public License version 2.1
as published by the Free Software Foundation.
/**
 * Logback: the reliable, generic, fast and flexible logging framework.
 * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
 *
 * This program and the accompanying materials are dual-licensed under
 * either the terms of the Eclipse Public License v1.0 as published by
 * the Eclipse Foundation
 *
 *   or (per the licensee's choosing)
 *
 * under the terms of the GNU Lesser General Public License version 2.1
 * as published by the Free Software Foundation.
 */
package ch.qos.logback.core.util;

import java.util.Calendar;
import java.util.Date;

public class TimeUtil {

    public static long computeStartOfNextSecond(long now) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(new Date(now));
        cal.set(Calendar.MILLISECOND, 0);
        cal.add(Calendar.SECOND, 1);
        return cal.getTime().getTime();
    }

    public static long computeStartOfNextMinute(long now) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(new Date(now));
        cal.set(Calendar.MILLISECOND, 0);
        cal.set(Calendar.SECOND, 0);
        cal.add(Calendar.MINUTE, 1);
        return cal.getTime().getTime();
    }

    public static long computeStartOfNextHour(long now) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(new Date(now));
        cal.set(Calendar.MILLISECOND, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.add(Calendar.HOUR, 1);
        return cal.getTime().getTime();
    }

    public static long computeStartOfNextDay(long now) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(new Date(now));

        cal.add(Calendar.DAY_OF_MONTH, 1);
        cal.set(Calendar.MILLISECOND, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.HOUR_OF_DAY, 0);
        return cal.getTime().getTime();
    }

    public static long computeStartOfNextWeek(long now) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(new Date(now));

        cal.set(Calendar.DAY_OF_WEEK, cal.getFirstDayOfWeek());
        cal.set(Calendar.HOUR_OF_DAY, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);
        cal.add(Calendar.WEEK_OF_YEAR, 1);
        return cal.getTime().getTime();
    }

    public static long computeStartOfNextMonth(long now) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(new Date(now));

        cal.set(Calendar.DATE, 1);
        cal.set(Calendar.HOUR_OF_DAY, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);
        cal.add(Calendar.MONTH, 1);
        return cal.getTime().getTime();
    }

}