package com.yihuisoft.common.util;

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

/**
 * 日期工具類
 * @author zarkjobs
 * @version v1.0.0
 */
public class DateUtil {

   /**yyyy格式*/
   public static final String sdfyyyy = "yyyy";
   /**yyyy-MM-dd格式*/
   public static final String sdfyyyy_MM_dd = "yyyy-MM-dd";
   /**yyyy年MM月dd日格式*/
   public static final String sdfyyyyCMMCddC = "yyyy年MM月dd日";
   /**yyyyMMdd格式*/
   public static final String sdfyyyyMMdd = "yyyyMMdd";
   /**yyyy-MM-dd HH:mm:ss格式*/
   public static final String sdfyyyy_MM_ddHHmmss = "yyyy-MM-dd HH:mm:ss";
   /**yyyy-MM-dd HH:mm格式*/
   public static final String sdfyyyy_MM_ddHHmm = "yyyy-MM-dd HH:mm";
   /**yyyy年MM月dd日 HH:mm:ss格式*/
   public static final String sdfyyyyCMMCddCHHmmss = "yyyy年MM月dd日 HH:mm:ss";
   /**HH:mm:ss格式*/
   public static final String sdfHHmmss = "HH:mm:ss";
   /**yyyyMMddHHmmss格式*/
   public static final String sdfyyyyMMddHHmmss = "yyyyMMddHHmmss";
   /**yyyyMM格式*/
   public static final String sdfyyyyMM = "yyyyMM";
   /**yyyy-MM格式*/
   public static final String sdfyyyy_MM = "yyyy-MM";
   /**MMdd格式*/
   public static final String sdfMMdd = "MMdd";
   /**HHmm格式*/
   public static final String sdfHHmm = "HHmm";

   /**
    * 獲取yyyyMMddHHmmss格式
    * @return
    */
   public static String getSdfTimes() {
      return new SimpleDateFormat(sdfyyyyMMddHHmmss).format(new Date());
   }
   
   /**
    * 獲取YYYYMM格式
    * @return
    */
   public static String getMonth() {
      return new SimpleDateFormat(sdfyyyy_MM).format(new Date());
   }
   
   
    /**
     * 獲取上一個月
     *
     * @return
     */
    public static String getLastMonth() {
        Calendar cal = Calendar.getInstance();
        cal.add(Calendar.MONTH, -1);
        SimpleDateFormat dft = new SimpleDateFormat("yyyyMM");
        return dft.format(cal.getTime());
    }

    /**
     *
     * 描述:獲取下一個月.
     *
     * @return
     */
    public static String getPreMonth() {
        Calendar cal = Calendar.getInstance();
        cal.add(Calendar.MONTH, 1);
        SimpleDateFormat dft = new SimpleDateFormat("yyyyMM");
        return dft.format(cal.getTime());
    }
   
   /**
    * 獲取YYYY格式
    * @return
    */
   public static String getYear() {
      return new SimpleDateFormat(sdfyyyy).format(new Date());
   }

   /**
    * 獲取YYYY-MM-DD格式
    * @return
    */
   public static String getDay() {
      return new SimpleDateFormat(sdfyyyy_MM_dd).format(new Date());
   }
   
   /**
    * 獲取YYYYMMDD格式
    * @return
    */
   public static String getDays(){
      return new SimpleDateFormat(sdfyyyyMMddHHmmss).format(new Date());
   }

   
   /**
    * 獲取YYYY-MM-DD HH:mm:ss格式
    * @return
    */
   public static String getTime() {
      return new SimpleDateFormat(sdfyyyy_MM_ddHHmmss).format(new Date());
   }

   /**
   * @Title: compareDate
   * @Description: TODO(日期比較，如果s>=e 返回true 否則返回false)
   * @param s
   * @param e
   * @return boolean  
   * @throws
   * @author fh
    */
   public static boolean compareDate(String s, String e) {
      if(fomatDate(s)==null||fomatDate(e)==null){
         return false;
      }
      return fomatDate(s).getTime() >=fomatDate(e).getTime();
   }

   /**
    * 格式化日期
    * @return
    */
   public static Date fomatDate(String date) {
      DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
      try {
         if(date==null || "".equals(date) || "null".equals(date))
            return null;
                  
         return fmt.parse(date);
      } catch (ParseException e) {
         //e.printStackTrace();
         System.out.println(e);
         return null;
      }
   }
   
   /**
    * 格式化日期
    * @return
    */
   public static Date fomatDate(String date,String sdfmt) {
      try {
         if(date==null || "".equals(date) || "null".equals(date))
            return null;
                  
         return new SimpleDateFormat(sdfmt).parse(date);
      } catch (ParseException e) {
         //e.printStackTrace();
         System.out.println(e);
         return null;
      }
   }


   /**
    * 格式化日期
    * @return
    */
   public static String fomatDate(Date date,String sdfmt) {
      
      try {
         if(date==null )
            return null;
                  
         return new SimpleDateFormat(sdfmt).format(date);
      } catch (Exception e) {
         //e.printStackTrace();
         System.out.println(e);
         return null;
      }
   }

   /**
    * 格式化日期
    * @return
    */
   public static Date fomatDateToDate(Date date,String sdfmt) {
      return fomatDate(fomatDate(date,sdfmt),sdfmt);
   }

   /**
    * 校驗日期是否合法
    * @return
    */
   public static boolean isValidDate(String s) {
      DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
      try {
         fmt.parse(s);
         return true;
      } catch (Exception e) {
         // 如果throw java.text.ParseException或者NullPointerException，就說明格式不對
         return false;
      }
   }
   
   /**
    * @param startTime
    * @param endTime
    * @return
    */
   public static int getDiffYear(String startTime,String endTime) {
      DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
      try {

         return (int) (((fmt.parse(endTime).getTime()-fmt.parse(startTime).getTime())/ (1000 * 60 * 60 * 24))/365);

      } catch (Exception e) {
         // 如果throw java.text.ParseException或者NullPointerException，就說明格式不對
         System.out.println(e);
         return 0;
      }
   }
    
   /**
     * <li>功能描述：時間相減得到天數
     * @param beginDateStr
     * @param endDateStr
     * @return
     * long 
     * @author Administrator
     */
    public static long getDaySub(String beginDateStr,String endDateStr){
        long day=0;
        java.text.SimpleDateFormat format = new java.text.SimpleDateFormat("yyyy-MM-dd");
        java.util.Date beginDate = null;
        java.util.Date endDate = null;
        
            try {
            beginDate = format.parse(beginDateStr);
            endDate= format.parse(endDateStr);
         } catch (ParseException e) {
            //e.printStackTrace();
            System.out.println(e);
         }
         if(beginDate != null && endDate != null)
            day=(endDate.getTime()-beginDate.getTime())/(24*60*60*1000);
            //System.out.println("相隔的天數="+day);
      
        return day;
    }
    
    /**
     * <li>功能描述：時間相減得到秒
     * @param beginDateStr
     * @param endDateStr
     * @return
     * long 
     * @author Administrator
     */
    public static long getDaySubTime(String beginDateStr,String endDateStr){
        long second=0;
        java.text.SimpleDateFormat format = new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        java.util.Date beginDate = null;
        java.util.Date endDate = null;
        
            try {
            beginDate = format.parse(beginDateStr);
            endDate= format.parse(endDateStr);
         } catch (ParseException e) {
            //e.printStackTrace();
            System.out.println(e);
         }
          if(beginDate != null && endDate != null)
               second=(endDate.getTime()-beginDate.getTime())/(1000);
      
        return second;
    }
    
    
    
    /**
     * 得到n天之後的日期
     * @param days
     * @return
     */
    public static String getAfterDayDate(String days) {
       int daysInt = Integer.parseInt(days);
       
        Calendar canlendar = Calendar.getInstance(); // java.util包
        canlendar.add(Calendar.DATE, daysInt); // 日期減 如果不夠減會將月變動
        Date date = canlendar.getTime();
        
        SimpleDateFormat sdfd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
      return sdfd.format(date);
    }

   /**
    * 得到n天之後的日期
    * @param days
    * @return
    */
   public static String getAfterDayDate(int days) {
      int daysInt = days;

      Calendar canlendar = Calendar.getInstance(); // java.util包
      canlendar.add(Calendar.DATE, daysInt); // 日期減 如果不夠減會將月變動
      Date date = canlendar.getTime();

      SimpleDateFormat sdfd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
      return sdfd.format(date);
   }
    /**
     * 得到n天之後的日期
     * @param days
     * @return
     */
    public static Date getAfterDay(int days) {     
        Calendar canlendar = Calendar.getInstance(); // java.util包
        canlendar.add(Calendar.DATE, days); // 日期減 如果不夠減會將月變動
      return canlendar.getTime();
    }

   /**
    * 得到n天之後的日期
    * @param days
    * @return
    */
   public static Date getAfterDay(int days,String sdfmt) {
      return fomatDate(fomatDate(getAfterDay(days),sdfmt),sdfmt);
   }

   /**
    * 獲取當前月的天數
    * @return
    */
   public static int getDayOfMonth(){
      Calendar calendar = Calendar.getInstance();
      return calendar.getActualMaximum(Calendar.DATE);
   }

   /**
    * 根據指定時間得到n小時之後的時間
    * @param date
    * @param n
    * @return
    */
   public static Date getAfterHour(Date date, int n) {
      Calendar canlendar = Calendar.getInstance();
      canlendar.setTime(date);
      canlendar.add(Calendar.HOUR, n);
      return canlendar.getTime();
   }

   /**
     * 得到n天之後是周幾
     * @param days
     * @return
     */
    public static String getAfterDayWeek(String days) {
       int daysInt = Integer.parseInt(days);
        Calendar canlendar = Calendar.getInstance(); // java.util包
        canlendar.add(Calendar.DATE, daysInt); // 日期減 如果不夠減會將月變動
        Date date = canlendar.getTime();
        SimpleDateFormat sdf = new SimpleDateFormat("E");
      return sdf.format(date);
    }

   /**
    * 返回第一個引數加上第二個引數（天）之後的日期
    * @param date
    * @param day
    * @return
    */
   public static Date getDateNext(Date date, int day) {
      Calendar calendar = new GregorianCalendar();
      calendar.setTime(date);
      calendar.add(Calendar.DAY_OF_MONTH, day);
      return calendar.getTime();
   }

   /**
    * 根據日期字串,傳入幾天,得到向後幾天日期
    * @param date 日期
    * @param day 幾天
     * @return
     */
   public static Date getDateNext(String date, int day){
      Calendar calendar = new GregorianCalendar();
      calendar.setTime(fomatDate(date));
      calendar.add(Calendar.DAY_OF_MONTH, day);
      return calendar.getTime();
   }
    
    /**
     * 取得上月日期
     * @param monthNum 月數
     * @return
     */
    public static String getLastMonth(int monthNum) {
       Calendar c = Calendar.getInstance();
       c.add(Calendar.MONTH, -1*monthNum);
       SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMM");
      return dateFormat.format(c.getTime());
    }

   /**
    * 下月第一天
    * @return
    */
   public static Date nextMonthFirstDate() {
      Calendar calendar = Calendar.getInstance();
      calendar.set(Calendar.DAY_OF_MONTH, 1);
      calendar.add(Calendar.MONTH, 1);
      return calendar.getTime();
   }

   /**
    * 上月第一天
    * @return
    */
   public static Date lastMonthFirstDate() {
      Calendar calendar = Calendar.getInstance();
      calendar.set(Calendar.DAY_OF_MONTH, 1);
      calendar.add(Calendar.MONTH, -1);
      return calendar.getTime();
   }

   /**
    * 將日期中的時分秒清零
    * @param date
    * @return
    */
   public static Date getDayStart(Date date) {
      Calendar cal1 = Calendar.getInstance();
      cal1.setTime(date);
      cal1.set(Calendar.HOUR_OF_DAY, 0);
      cal1.set(Calendar.MINUTE, 0);
      cal1.set(Calendar.SECOND, 0);
      cal1.set(Calendar.MILLISECOND, 0);
      return cal1.getTime();
   }

   /**
    * 1970/01/01至今的秒數轉換成Date
    * @param timeStamp
    * @return
    */
   public static Date getDateByTimeStamp(Long timeStamp){
      return new Date(timeStamp*1000);
   }

   /**
    * 1970/01/01至今的豪秒數轉換成Date
    * @param timeStampMs
    * @return
    */
   public static Date getDateByTimeStampMs(Long timeStampMs){
      return new Date(timeStampMs);
   }

   /**
    * 時間轉換成秒 1970/01/01至今的秒數（Date轉long），等於new Date().getTime()/1000
    * @param date
    * @return
    * @throws Exception
    */
   public static long getTimeStampByDate(Date date)
   {
      long stamp = 0L;
      Date date1 = date;
      Date date2 = null;
      try {
         date2 = (new SimpleDateFormat("yyyy/MM/dd HH:mm:ss")).parse("1970/01/01 08:00:00");
         stamp = (date1.getTime() - date2.getTime()) / 1000L;
      } catch (Exception e) {
         stamp = 0L;
      }

      return stamp;
   }

   /**
    * 時間轉換成秒 1970/01/01至今的豪秒數（Date轉long）
    * @param date
    * @return
    * @throws Exception
    */
   public static long getTimeStampMsByDate(Date date)
   {
      long stamp = 0L;
      Date date1 = date;
      Date date2 = null;
      try {
         date2 = (new SimpleDateFormat("yyyy/MM/dd HH:mm:ss")).parse("1970/01/01 08:00:00");
         stamp = (date1.getTime() - date2.getTime());
      } catch (Exception e) {
         stamp = 0L;
      }

      return stamp;
   }

   /**
    * 獲取當前時間之前或之後幾小時 hour
    * @param hour
    * @return
    */
   public static Date getTimeByHour(int hour) {

      Calendar calendar = Calendar.getInstance();
      calendar.set(Calendar.HOUR_OF_DAY, calendar.get(Calendar.HOUR_OF_DAY) + hour);

      //return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(calendar.getTime());
      return calendar.getTime();
   }


   /**
    * main函式
    * @param args
    */
   public static void main(String[] args) {
//     Date date = new Date();
//     System.out.println(date);
//     Date date2 = getAfterHour(date, 10);
//     System.out.println(date2);
//    System.out.println(getDays());
      System.out.println(getTimeStampByDate(new Date())+"========="+getTimeStampByDate(DateUtil.getAfterDay(7)));

   }
}