import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * @author yanpeng
 * @version 1.0
 * @desc TODO
 * @company 北京中经网软件有限公司
 * @date 2021/8/10 9:51
 */
public class DateUtil {
    public static void main(String[] args) {
        Map<String, Integer> beforeDate = null;
        try {
            beforeDate = getBeforeDate(0);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        System.out.println(beforeDate);
    }

    /**
     * @param checkCalculateCycle 考核计算周期 0=日 1=周 2=月 3=季 4=年
     * @return
     */
    public static Map<String, Integer> getBeforeDate(int checkCalculateCycle) throws ParseException {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        Date parse = sdf.parse("2021-08-01");
        Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("GMT+08:00"));
//        calendar.setTime(parse);
        int year = calendar.get(Calendar.YEAR);
        int month = calendar.get(Calendar.MONTH) + 1;   //获取月份，0表示1月份
        int quarter = month / 3;
        Map<String, Integer> map = new HashMap<String, Integer>();
        map.put("year", year);
        if (checkCalculateCycle == 4) {
            map.put("year", --year);
            return map;
        } else if (checkCalculateCycle == 3) {
            if (month <= 3) {
                map.put("year", --year);
                map.put("quarter", 4);
            } else {
                if (month % 3 == 0) {
                    quarter--;
                }
                map.put("quarter", quarter);
            }
            return map;
        } else if (checkCalculateCycle == 2) {
            calendar.add(Calendar.MONTH, -1);
            month = calendar.get(Calendar.MONTH) + 1;
            map.put("year", calendar.get(Calendar.YEAR));
            map.put("month", month);
            map.put("quarter", month % 3 == 0 ? (month / 3) : (month / 3 + 1));
            return map;
        } else if (checkCalculateCycle == 1) {
            calendar.add(Calendar.WEEK_OF_MONTH, -1);
            month = calendar.get(Calendar.MONTH) + 1;
            map.put("year", calendar.get(Calendar.YEAR));
            map.put("quarter", month % 3 == 0 ? (month / 3) : (month / 3 + 1));
            map.put("month", month);
            map.put("week", calendar.get(Calendar.WEEK_OF_MONTH));
            return map;
        } else if (checkCalculateCycle == 0) {
            calendar.add(Calendar.DAY_OF_MONTH, -1);
            month = calendar.get(Calendar.MONTH) + 1;
            map.put("year", calendar.get(Calendar.YEAR));
            map.put("quarter", month % 3 == 0 ? (month / 3) : (month / 3 + 1));
            map.put("month", month);
            map.put("week", calendar.get(Calendar.WEEK_OF_MONTH));
            map.put("day", calendar.get(Calendar.DAY_OF_MONTH));
            return map;
        }
        return map;
    }
}