package cn.timer.api.utils;

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

public class LevelPriceDateFromatUtils {

	/**
	 * 时间运算
	 * @param unit
	 * @param num
	 * @param time
	 * @return
	 */
	public static Long getTimestampByUnitAndNumAddTime(String unit,Long num,Long time) {
		//单位 1天 2月 3季 4年 5两年

		Calendar calendar = LevelPriceDateFromatUtils.getCalendarByTimestamp(time);
		switch (unit) {
		case "1":
			calendar.add(Calendar.DATE, num.intValue());
			break;
		case "2":
			calendar.add(Calendar.DAY_OF_MONTH, num.intValue());
			break;
		case "3":
			calendar.add(Calendar.DAY_OF_MONTH, num.intValue()*3);//一季度等于三个月
			break;
		case "4":
			calendar.add(Calendar.YEAR, num.intValue());
			break;
		case "5":
			calendar.add(Calendar.YEAR, num.intValue()*2);
			for (int i = 0; i < num; i++) {
				calendar.add(Calendar.YEAR, 1);//买二送一
			}
			break;
		default:
			break;
		}
		
		return calendar.getTimeInMillis();
		
	}
	
	
	public static Calendar getCalendarByTimestamp(Long time) {
	
		Calendar cal = Calendar.getInstance();
		cal.setTimeInMillis(time);
		
		return cal;
		
	}
	
	public static Long getTimestampByNow() {
		
		Date date = new Date();
		
		return date.getTime();
		
	}
	
	public static void main(String[] args) {
		//System.out.println(3/2);
		System.out.println(getCalendarByTimestamp(0L).get(Calendar.YEAR));
	}
}