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/*
 * Copyright (c) 2008-2014 akquinet tech@spree GmbH
 *
 * This file is part of Hibersap.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this software 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 org.hibersap.util;

import org.apache.commons.lang.time.DateUtils;

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


/**
 * @author Carsten Erker
 */
public final class DateUtil {

    private DateUtil() {
        // should not be instantiated
    }

    public static Date joinDateAndTime( final Date date, final Date time ) {
        Calendar dateCal = Calendar.getInstance();
        dateCal.setTime( date );
        Calendar timeCal = Calendar.getInstance();
        timeCal.setTime( time );

        dateCal.set( Calendar.HOUR_OF_DAY, timeCal.get( Calendar.HOUR_OF_DAY ) );
        dateCal.set( Calendar.MINUTE, timeCal.get( Calendar.MINUTE ) );
        dateCal.set( Calendar.SECOND, timeCal.get( Calendar.SECOND ) );
        dateCal.set( Calendar.MILLISECOND, timeCal.get( Calendar.MILLISECOND ) );
        return dateCal.getTime();
    }

    public static Date newDate( final int year, final int month, final int date ) {
        return newDate( year, month, date, 0, 0, 0 );
    }

    public static Date newDate( final int year, final int month, final int date, final int hourOfDay, final int minute, final int second ) {
        Calendar cal = Calendar.getInstance();
        cal.clear();
        cal.set( year, month, date, hourOfDay, minute, second );
        return cal.getTime();
    }

    public static Date stripDate( final Date date ) {
        Calendar cal = Calendar.getInstance();
        cal.setTime( date );
        cal.set( 1970, Calendar.JANUARY, 1 );

        return cal.getTime();
    }

    public static Date stripTime( final Date date ) {
        return DateUtils.truncate( date, Calendar.DAY_OF_MONTH );
    }
}