package framework.util;

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


public final class TimeUtil {
	public static final SimpleDateFormat yyyy_MM_dd=new SimpleDateFormat("yyyy-MM-dd");
	public static final SimpleDateFormat yyyy_MM_dd_HH_mm_ss=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
	public static final SimpleDateFormat TIME_FULL =new SimpleDateFormat("yyyyMMdd-HHmmss-SSS");
	
	/**
	 * yyyy年MM月dd日
	 * @param date
	 * @return
	 */
	public static String getDateCnStr(Date date){
		if(date==null){
			return "";
		}
		SimpleDateFormat fmt = new SimpleDateFormat("yyyy年MM月dd日");
		return fmt.format(date);
	}
	
	/**
	 * new Date().getTime()
	 * 
	 * @return
	 */
	public static String getTime() {
		return String.valueOf(new Date().getTime());
	}

	/**
	 * yyyy-MM-dd_HH_mm_ss
	 * @return
	 */
	public static String getLongTime() {
		SimpleDateFormat fmt = new SimpleDateFormat(
				"yyyy-MM-dd_HH_mm_ss");
		return fmt.format(new Date());
	}
	/**
	 * yyyyMMdd
	 * @return
	 */
	public static String getDate8() {
		SimpleDateFormat fmt = new SimpleDateFormat(
				"yyyyMMdd");
		return fmt.format(new Date());
	}
	/**
	 * yyyy-MM-dd
	 * @param date
	 * @return
	 */
	public static String getDate10(Date date){
		if(date==null){
			return "";
		}
		return yyyy_MM_dd.format(date);
	}

	/**
	 * yyyy-MM-dd HH:mm:ss
	 * @param date
	 * @return
	 */
	public static String getDate20(Date date) {
		SimpleDateFormat fmt = new SimpleDateFormat(
				"yyyy-MM-dd HH:mm:ss");
		return fmt.format(date);
	}
	/**
	 * yyyy-MM-dd 00:00:00
	 * @param date
	 * @return
	 */
	public static Date getDateBegin(Date date) throws Exception {
		String s = yyyy_MM_dd.format(date)+" 00:00:00";
		return yyyy_MM_dd_HH_mm_ss.parse(s);
	}
	/**
	 * yyyy-MM-dd 00:00:00
	 * @param date
	 * @return
	 * @throws Exception
	 */
	public static Date getDateBegin(String date) throws Exception {
		String s = date+" 00:00:00";
		return yyyy_MM_dd_HH_mm_ss.parse(s);
	}
	/**
	 * yyyy-MM-dd 23:59:59
	 * @param date
	 * @return
	 * @throws Exception
	 */
	public static Date getDateEnd(Date date) throws Exception {
		String s = yyyy_MM_dd.format(date)+" 23:59:59";
		return yyyy_MM_dd_HH_mm_ss.parse(s);
	}
	/**
	 * yyyy-MM-dd 23:59:59
	 * @param date
	 * @return
	 * @throws Exception
	 */
	public static Date getDateEnd(String date) throws Exception {
		String s = date+" 23:59:59";
		return yyyy_MM_dd_HH_mm_ss.parse(s);
	}
	/**
	 * 天数计算
	 * @param date
	 * @param d 加减天数
	 * @return
	 */
	public static Date getDate(Date date, int d){
		long t = date.getTime()+24*3600000*d;
		return new Date(t);
	}
	
	/**
	 * 当月第一天
	 * @return
	 */
	public static String getCurrentMonthFirstDate(){
		Calendar c = Calendar.getInstance();
		int year = c.get(Calendar.YEAR);
		int month = c.get(Calendar.MONTH)+1;
		
		StringBuffer s = new StringBuffer();
		s.append(year).append("-");
		if(month<10){
			s.append("0");
		}
		s.append(month).append("-01");
		return s.toString();
	}
	
	/**
	 * 当月最后一天
	 * @return
	 */
	public static String getCurrentMonthLastDate(){
		Calendar c = Calendar.getInstance();
		c.add(Calendar.MONTH, 1);
		c.set(Calendar.DATE, 1);
		c.add(Calendar.DATE, -1);
		
		return yyyy_MM_dd.format(c.getTime());
	}

}