package cn.com.tenlion.systemtask.utils;

/**
 * Calendar操作Date
 * @author renpc
 */
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;


public class DateUtils {

    /**设置初始值*/
    private static Calendar cal;

    /**
     * 根据当前系统时区定义Calendar
     */
    static {
        cal = Calendar.getInstance();
    }

    /**
     * 获取date的月份的时间范围
     * @param date
     * @return
     */
    public static DateRange getMonthRange(Date date) {
        Calendar startCalendar = Calendar.getInstance();
        startCalendar.setTime(date);
        startCalendar.set(Calendar.DAY_OF_MONTH, 1);
        setMaxTime(startCalendar);

        Calendar endCalendar = Calendar.getInstance();
        endCalendar.setTime(date);
        endCalendar.set(Calendar.DAY_OF_MONTH, endCalendar.getActualMaximum(Calendar.DAY_OF_MONTH));
        setMaxTime(endCalendar);

        return new DateRange(startCalendar.getTime(), endCalendar.getTime());
    }

    /**
     * 根据指定日期获取当前属于第几个季度
     * @param date
     */
    public static int getNowQuarter(Date date){
        cal.setTime(date);
        int month = cal.get(Calendar.MONTH) + 1;
        int quarter = 0;
        //判断季度
        if (month >= 1 && month <= 3) {
            quarter = 1;
        } else if (month >= 4 && month <= 6) {
            quarter = 2;
        } else if (month >= 7 && month <= 9) {
            quarter = 3;
        } else {
            quarter = 4;
        }
        return quarter;
    }

    /**
     * 获取当前季度的时间范围
     * @return current quarter
     */
    public static DateRange returnQuarterCurrent(int year, int quarter) {
        Calendar startCalendar = Calendar.getInstance();
        Calendar endCalendar = Calendar.getInstance();
       if(quarter == 1) {
           startCalendar.set(year, 1-1, 1, 00, 00, 00);
           endCalendar.set(year, 3-1,31, 23,59,59);
       }else if(quarter == 2) {
           startCalendar.set(year, 4-1, 1, 00, 00, 00);
           endCalendar.set(year, 6-1,30, 23,59,59);
       }else if(quarter == 3) {
           startCalendar.set(year, 7-1, 1, 00, 00, 00);
           endCalendar.set(year, 9-1,30, 23,59,59);
       }else {
           startCalendar.set(year, 10-1, 1, 00, 00, 00);
           endCalendar.set(year, 12-1,31, 23,59,59);
       }
        return new DateRange(startCalendar.getTime(), endCalendar.getTime());
    }

    /**
     * 获取当前季度的时间范围
     * @return current quarter
     */
    public static DateRange getThisQuarter(int quarter) {
        Calendar startCalendar = Calendar.getInstance();
        startCalendar.set(Calendar.MONTH, ((int) startCalendar.get(Calendar.MONTH) / 3) * 3);
        startCalendar.set(Calendar.DAY_OF_MONTH, 1);
        setMinTime(startCalendar);

        Calendar endCalendar = Calendar.getInstance();
        endCalendar.set(Calendar.MONTH, ((int) startCalendar.get(Calendar.MONTH) / 3) * 3 + 2);
        endCalendar.set(Calendar.DAY_OF_MONTH, endCalendar.getActualMaximum(Calendar.DAY_OF_MONTH));
        setMaxTime(endCalendar);

        return new DateRange(startCalendar.getTime(), endCalendar.getTime());
    }

    /**
     * 获取昨天的时间范围
     * @return
     */
    public static DateRange getYesterdayRange() {
        Calendar startCalendar = Calendar.getInstance();
        startCalendar.add(Calendar.DAY_OF_MONTH, -1);
        setMinTime(startCalendar);

        Calendar endCalendar = Calendar.getInstance();
        endCalendar.add(Calendar.DAY_OF_MONTH, -1);
        setMaxTime(endCalendar);

        return new DateRange(startCalendar.getTime(), endCalendar.getTime());
    }

    /**
     * 获取当前月份的时间范围
     * @return
     */
    public static DateRange getThisMonth(){
        Calendar startCalendar = Calendar.getInstance();
        startCalendar.set(Calendar.DAY_OF_MONTH, 1);
        setMinTime(startCalendar);

        Calendar endCalendar = Calendar.getInstance();
        endCalendar.set(Calendar.DAY_OF_MONTH, endCalendar.getActualMaximum(Calendar.DAY_OF_MONTH));
        setMaxTime(endCalendar);

        return new DateRange(startCalendar.getTime(), endCalendar.getTime());
    }

    /**
     * 获取上个月的时间范围
     * @return
     */
    public static DateRange getLastMonth(){
        Calendar startCalendar = Calendar.getInstance();
        startCalendar.add(Calendar.MONTH, -1);
        startCalendar.set(Calendar.DAY_OF_MONTH, 1);
        setMinTime(startCalendar);

        Calendar endCalendar = Calendar.getInstance();
        endCalendar.add(Calendar.MONTH, -1);
        endCalendar.set(Calendar.DAY_OF_MONTH, endCalendar.getActualMaximum(Calendar.DAY_OF_MONTH));
        setMaxTime(endCalendar);

        return new DateRange(startCalendar.getTime(), endCalendar.getTime());
    }

    /**
     * 获取指定月的时间范围
     * month:-1是前一个月,-2是前二个月。+1是推后一个月。以此类推
     * @return
     */
    public static DateRange getAppointMonth(int month){
        Calendar startCalendar = Calendar.getInstance();
        startCalendar.add(Calendar.MONTH, month);
        startCalendar.set(Calendar.DAY_OF_MONTH, 1);
        setMinTime(startCalendar);

        Calendar endCalendar = Calendar.getInstance();
        endCalendar.add(Calendar.MONTH, month);
        endCalendar.set(Calendar.DAY_OF_MONTH, endCalendar.getActualMaximum(Calendar.DAY_OF_MONTH));
        setMaxTime(endCalendar);

        return new DateRange(startCalendar.getTime(), endCalendar.getTime());
    }

    /**
     * 获取上个季度的时间范围
     * @return
     */
    public static DateRange getLastQuarter() {
        Calendar startCalendar = Calendar.getInstance();
        startCalendar.set(Calendar.MONTH, ((int) startCalendar.get(Calendar.MONTH) / 3 - 1) * 3);
        startCalendar.set(Calendar.DAY_OF_MONTH, 1);
        setMinTime(startCalendar);

        Calendar endCalendar = Calendar.getInstance();
        endCalendar.set(Calendar.MONTH, ((int) endCalendar.get(Calendar.MONTH) / 3 - 1) * 3 + 2);
        endCalendar.set(Calendar.DAY_OF_MONTH, endCalendar.getActualMaximum(Calendar.DAY_OF_MONTH));
        setMaxTime(endCalendar);

        return new DateRange(startCalendar.getTime(), endCalendar.getTime());
    }

    private static void setMinTime(Calendar calendar){
        calendar.set(Calendar.HOUR_OF_DAY, 0);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        calendar.set(Calendar.MILLISECOND, 0);
    }

    private static void setMaxTime(Calendar calendar){
        calendar.set(Calendar.HOUR_OF_DAY, calendar.getActualMaximum(Calendar.HOUR_OF_DAY));
        calendar.set(Calendar.MINUTE, calendar.getActualMaximum(Calendar.MINUTE));
        calendar.set(Calendar.SECOND, calendar.getActualMaximum(Calendar.SECOND));
        calendar.set(Calendar.MILLISECOND, calendar.getActualMaximum(Calendar.MILLISECOND));
    }


    public final static String DEFAULT_PATTERN = "MM/dd/yyyy HH:mm:ss";
    public static String format(Date date){
        SimpleDateFormat sdf = new SimpleDateFormat(DEFAULT_PATTERN);
        return sdf.format(date);
    }

    public static void main(String[] args) {

        //DateRange currentQuarter = getThisQuarter();
        //System.out.println("当前季度的时间范围： "+DateUtilsTemp.format(currentQuarter.getStart())+" - "+DateUtilsTemp.format(currentQuarter.getEnd()));


        DateRange yesterdayRange = getYesterdayRange();
        //System.out.println("昨天的时间范围: "+DateUtilsTemp.format(yesterdayRange.getStart())+" - "+DateUtilsTemp.format(yesterdayRange.getEnd()));

        DateRange thisMonth = getThisMonth();
        //System.out.println("当前月份的时间范围: "+DateUtilsTemp.format(thisMonth.getStart())+" - "+DateUtilsTemp.format(thisMonth.getEnd()));

        DateRange lastMonth = getLastMonth();
        //System.out.println("上个月的时间范围: "+DateUtilsTemp.format(lastMonth.getStart())+" - "+DateUtilsTemp.format(lastMonth.getEnd()));

        DateRange lastQuarter = getLastQuarter();
        //System.out.println("上个季度的时间范围: "+DateUtilsTemp.format(lastQuarter.getStart())+" - "+DateUtilsTemp.format(lastQuarter.getEnd()));

        DateRange dateRange = returnQuarterCurrent(2020, 5);
        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        System.out.println(df.format(dateRange.getStart()));
        System.out.println(df.format(dateRange.getEnd()));


    }
}