/* 
 * This file is part of cert-signer
 * Copyright (c) 2024 Paolo Lulli.
 * 
 * This program is free software: you can redistribute it and/or modify  
 * it under the terms of the GNU General Public License as published by  
 * the Free Software Foundation, version 3.
 *
 * This program is distributed in the hope that it will be useful, but 
 * WITHOUT ANY WARRANTY; without even the implied warranty of 
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License 
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

package net.lulli.certsigner.util;

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

public class ValidityUtil {
    private ValidityUtil(){}

    public static Date yesterday(){
        var calendar = Calendar.getInstance();
        calendar.getInstance().add(Calendar.DATE, -1);
        return calendar.getTime();
    }

    public static Date plusYears(int years){
        var calendar = Calendar.getInstance();
        calendar.add(Calendar.YEAR, years);
        return calendar.getTime();
    }
    public static Date plusDays(int days){
        var calendar = Calendar.getInstance();
        calendar.add(Calendar.DATE, days);
        return calendar.getTime();
    }
}