package com.ibeetl.admin.core.util;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

public class DateUtil {
    
    public static Date MAX_DATE = maxDate();

    public static int daysBetween(String smdate,String bdate) throws ParseException {
        SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");
        Calendar cal = Calendar.getInstance();
        cal.setTime(sdf.parse(smdate));
        long time1 = cal.getTimeInMillis();
        cal.setTime(sdf.parse(bdate));
        long time2 = cal.getTimeInMillis();
        long between_days=(time2-time1)/(1000*3600*24);
        return Integer.parseInt(String.valueOf(between_days));
    }
    
    public static String now() {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        return sdf.format(new Date());
    }
    
    public static String now(String format) {
        SimpleDateFormat sdf = new SimpleDateFormat(format);
        return sdf.format(new Date());
    }
    
    private static Date maxDate() {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        try {
            return sdf.parse("9999-12-31 23:59:59");
        } catch (ParseException e) {
            throw new RuntimeException(e);
        }
    }
}