package com.topdraw.util;

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

public class DateUtil {

    public static Date newDate(){
        return new Date();
    }

    public static long currentTimestamp(){
        return System.currentTimeMillis();
    }

    public static String formatDate(String time){
        SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd");
        try {
            //使用SimpleDateFormat的parse()方法生成Date
            Date date = sf.parse(time);
            String format = sf.format(date);
            return format;
        } catch (ParseException e) {
            e.printStackTrace();
        }

        return null;
    }

    public static String getWeekFirstDay() {
        SimpleDateFormat sdf= new SimpleDateFormat("yyyy-MM-dd");

        Calendar calendar1=Calendar.getInstance();

        calendar1.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);

        System.out.println("本周日: "+sdf.format(calendar1.getTime()));

        return sdf.format(calendar1.getTime());
    }

    public static String getWeekLastDay() {
        SimpleDateFormat sdf= new SimpleDateFormat("yyyy-MM-dd");

        Calendar calendar1=Calendar.getInstance();
        calendar1.set(Calendar.DAY_OF_WEEK, Calendar.SATURDAY);

        System.out.println("本周六: "+sdf.format(calendar1.getTime()));

        return sdf.format(calendar1.getTime());
    }

}