package com.espeed.tool;
 
import java.text.DateFormatSymbols;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.List;
import java.util.TimeZone;
/*
 * 程序名称:    	EspeedMail_时速邮箱
 * 程序版本:    	V1.0
 * 作    者:    	深圳市科飞时速网络技术有限公司(0755-88843776)
 * 版权所有:    	深圳市科飞时速网络技术有限公司
 * 技术支持:    	Tech@21gmail.com
 * 单元名称:    日期格式化工具类
 * 开始时间:    	2013.09.26
 * 程 序 员:    	谢勇
 * 最后修改:    
 * 备    注:		如需修改请通知程序员    
 */
public class DateFormat {
	private static SimpleDateFormat sdf = new SimpleDateFormat("yyyy年MM月dd日");
	private static SimpleDateFormat sdf2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

	/**将字符串转换日期*/
	public static Date dateToString(String str) {
		
		Date dateNum = null;
		try {
			dateNum = sdf.parse(str);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		return dateNum;
	}

	/**将字符串转换日期*/
	public static Date dateToString2(String str) {
		Date dateNum = null;
		try {
			dateNum = sdf2.parse(str);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		return dateNum;
	}

	/**将日期转换为字符串*/
	public static String simpleDataFormat(Date date) {// yy必须小写，MM是月份，mm是分；HH是24小时制，而hh是12小时制
		String str = sdf.format(date);
		return str;
	}

	/**给定一个日期型字符串，返回加减n天后的日期型字符串*/
	public static String nDaysAfterOneDateString(String basicDate, int n) {
		Date tmpDate = null;
		try {
			tmpDate = sdf2.parse(basicDate);
		} catch (Exception e) {
			// 日期型字符串格式错误
		}
		long nDay = (tmpDate.getTime() / (24 * 60 * 60 * 1000) + 1 + n)* (24 * 60 * 60 * 1000);
		tmpDate.setTime(nDay);

		return sdf2.format(tmpDate);
	}

	/**给定一个日期，返回加减n天后的日期*/
	public static Date nDaysAfterOneDate(Date basicDate, int n) {
		long nDay = (basicDate.getTime() / (24 * 60 * 60 * 1000) + 1 + n)
				* (24 * 60 * 60 * 1000);
		basicDate.setTime(nDay);

		return basicDate;
	}

	/**判断日期为星期几,0为星期天,依此类推*/
	public static String dayOfWeek(String strdate) {
		SimpleDateFormat df = new SimpleDateFormat("yyyy年MM月dd日");
		Date date = null;
		try {
			date = df.parse(strdate);
		} catch (ParseException e) {
			// TODO Auto-generated catch block
			System.out.println("字符型转日期有异常");
		}
		// 首先定义一个calendar，必须使用getInstance()进行实例化
		Calendar aCalendar = Calendar.getInstance();
		// 里面野可以直接插入date类型
		aCalendar.setTime(date);
		// 计算此日期是一周中的哪一天
		int x = aCalendar.get(Calendar.DAY_OF_WEEK) - 1;
		String week = "";
		switch (x) {
		case 0:
			week = "星期天";
			break;
		case 1:
			week = "星期一";
			break;
		case 2:
			week = "星期二";
			break;
		case 3:
			week = "星期三";
			break;
		case 4:
			week = "星期四";
			break;
		case 5:
			week = "星期五";
			break;
		case 6:
			week = "星期六";
			break;

		}
		return week;
	}

	/**计算两个日期相隔的天数*/
	public static int nDaysBetweenTwoDate(Date firstDate, Date secondDate) {
		int nDay = (int) ((secondDate.getTime() - firstDate.getTime()) / (24 * 60 * 60 * 1000));
		return nDay;
	}

	/**计算两个日期相隔的天数*/
	public static int nDaysBetweenTwoDate(String firstString, String secondString) {
		SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
		Date firstDate = null;
		Date secondDate = null;
		try {
			firstDate = df.parse(firstString);
			secondDate = df.parse(secondString);
		} catch (Exception e) {
			// 日期型字符串格式错误
		}

		int nDay = (int) ((secondDate.getTime() - firstDate.getTime()) / (24 * 60 * 60 * 1000));
		
		return nDay;
	}
	
	/**计算两个日期是否在同一个月*/
	@SuppressWarnings("deprecation")
	public static int nMonthBetweenTwoDate(String firstDate,String secondDate)
	{
		SimpleDateFormat monthtimer = new SimpleDateFormat("yyyy-MM");
		
		Date firstDateM = null;
		
		Date secondDateM = null;
		
		try
		{
			firstDateM = monthtimer.parse(firstDate);
			
			secondDateM = monthtimer.parse(secondDate);
		}
		
		catch(Exception e)
		{
			System.out.println("计算两个日期相差的月数异常");
			
			e.printStackTrace();
		}
		
		int nMonth = secondDateM.getMonth() - firstDateM.getMonth();
		
		return nMonth;
	}

	/**某年某月有多少天*/
	public static int yearMonthDay(int year, int month) {
		int day = 0;
		if (((month >= 1) && (month <= 12)) && (year >= 0)) {
			if (month == 2) {
				if ((((year % 4) == 0) && ((year % 100) != 0))|| ((year % 400) == 0))
					day = 29;
				else
					day = 28;
			} else {
				if ((month == 1) || (month == 3) || (month == 5)
						|| (month == 7) || (month == 8) || (month == 10)
						|| (month == 12))

					day = 31;
				else
					day = 30;
			}
			System.out.println(year + "年" + month + "月的天数为：" + day);
		} else {
			System.out.println("请输入正确的年月！");
		}
		return day;

	}
	
	/**判断两时间相差的分钟数*/
	public static long minutes(String beginDate,String endDate){
		
		Date begin = null;
		Date end = null;
		SimpleDateFormat dfs = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		long minute1=0;
		try {
			begin = dfs.parse(beginDate);
			end = dfs.parse(endDate);
			
			long between = (end.getTime() - begin.getTime()) / 1000;// 除以1000是为了转换成秒
			minute1 = between / 60;
			
			} catch (Exception e) {
			e.printStackTrace();
			}
		return minute1;
		
	}

	/**获取当前时间的季度*/
	public static String getQuarter(){
		SimpleDateFormat dfs = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		String nowDate= dfs.format(new Date());
		
		String[] str=nowDate.split("-");
		int nowmonth=Integer.parseInt(str[1]);
		if(nowmonth<=3){
			return "第一季度";
		}else if(nowmonth>3&&nowmonth<=6){
			return "第二季度";
		}else if(nowmonth>6&&nowmonth<=9){
			return "第三季度";
		}else{
			return "第四季度";
		}
	} 
	
	/**获取当前第多少周*/
	public static String getWeekDay(){
		TimeZone zone=TimeZone.getTimeZone("Asia/Shanghai");
		Calendar cal = Calendar.getInstance(zone);
		int c = cal.get(cal.WEEK_OF_YEAR);
		return c+"";
	}
	
	/**获取当前时间*/
	public static String getNowDate(){
		String nowdate="2000-01-01 01:00:00";
		try {
			SimpleDateFormat df=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
			nowdate=df.format(new Date());
		} catch (Exception e) {
			e.printStackTrace();
		}
		return nowdate;
	}
	
	/**获取当月最后一天*/
	public static String getMonthLastDay(){
		String result="";
		try {
			SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd"); 
			Calendar ca = Calendar.getInstance();   
	        ca.set(Calendar.DAY_OF_MONTH, ca.getActualMaximum(Calendar.DAY_OF_MONTH)); 
	        result = df.format(ca.getTime());
	        System.out.println(result);
		} catch (Exception e) {
			e.printStackTrace();
		}
		return result;
	}
		
	/**获取本周日日期*/
	public static String getWeekLastTime(){
		String sunday="";
		try {
			Calendar cal =Calendar.getInstance();
		    SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
		    //cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY); //获取本周一的日期
		    //System.out.println("********得到本周一的日期*******"+df.format(cal.getTime()));
		    cal.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
		    cal.add(Calendar.WEEK_OF_YEAR, 1);
		    sunday=df.format(cal.getTime());
		} catch (Exception e) {
			e.printStackTrace();
		}
		return sunday;
	}
	
	/**周期内所有周几的日期*/
	public static List<String> getWeekDate(String begintime,String endtime,String weekstr){
		List<String> result=new ArrayList<String>();
		String[] weekArry=weekstr.split(",");
		try {
			Calendar c_begin = new GregorianCalendar();
		    Calendar c_end = new GregorianCalendar();
		    DateFormatSymbols dfs = new DateFormatSymbols();
		    String[] weeks = dfs.getWeekdays();
		    c_begin.set(2015, 10, 16); //Calendar的月从0-11，所以4月是3.
		    c_end.set(2015, 10, 31); //Calendar的月从0-11，所以5月是4.
		    c_end.add(Calendar.DAY_OF_YEAR, 1);  //结束日期下滚一天是为了包含最后一天
		     
		    while(c_begin.before(c_end)){
		    	String nowdate=new java.sql.Date(c_begin.getTime().getTime())+"";
		    	String week=c_begin.get(Calendar.DAY_OF_WEEK)-1+"";
		    	for(int i=0;i<weekArry.length;i++){
		    		if(weekArry[i].equals(week)){
		    			result.add(nowdate);
		    		}
		    	}
		    	c_begin.add(Calendar.DAY_OF_YEAR, 1);
		    }
		} catch (Exception e) {
			e.printStackTrace();
		}
		return result;
	}
	
	/**判断日期为星期几,0为星期天,依此类推*/
	public static int dayOfWeekNum(String strdate) {
		SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
		Date date = null;
		try {
			date = df.parse(strdate);
		} catch (ParseException e) {
			System.out.println("字符型转日期有异常");
		}
		//首先定义一个calendar，必须使用getInstance()进行实例化
		Calendar aCalendar = Calendar.getInstance();
		//里面野可以直接插入date类型
		aCalendar.setTime(date);
		//计算此日期是一周中的哪一天
		int x = aCalendar.get(Calendar.DAY_OF_WEEK) - 1;
		int week = 0;
		switch (x) {
		case 0:
			week = 7;
			break;
		case 1:
			week = 1;
			break;
		case 2:
			week = 2;
			break;
		case 3:
			week = 3;
			break;
		case 4:
			week = 4;
			break;
		case 5:
			week = 5;
			break;
		case 6:
			week = 6;
			break;

		}
		return week;
	}
	
	/**特殊节假日*/
	public static String getHoliday(){
		String time = "";
		try {
			Calendar cal =Calendar.getInstance();
		    int year = cal.get(Calendar.YEAR);//获取年
		    time =  year + "-"+"10-02";
		} catch (Exception e) {
			e.printStackTrace();
		}
		return time;
	}
	
	
	
	public static void main(String[] args) {
		System.out.println(getHoliday());
		//getMonthLastDay();
//		Calendar c_begin = new GregorianCalendar();
//	    Calendar c_end = new GregorianCalendar();
//	    DateFormatSymbols dfs = new DateFormatSymbols();
//	    String[] weeks = dfs.getWeekdays();
//	    c_begin.set(2015, 10, 16); //Calendar的月从0-11，所以4月是3.
//	    c_end.set(2015, 10, 31); //Calendar的月从0-11，所以5月是4.
//	    c_end.add(Calendar.DAY_OF_YEAR, 1);  //结束日期下滚一天是为了包含最后一天
//	     
//	    while(c_begin.before(c_end)){
//	      System.out.print("日期："+new java.sql.Date(c_begin.getTime().getTime()));
//	      int a=c_begin.get(Calendar.DAY_OF_WEEK)-1;
//	      System.out.println("星期"+a);
//	      c_begin.add(Calendar.DAY_OF_YEAR, 1);
//	    } 
		
		//System.out.println(nDaysAfterOneDateString("2016-03-01 10:02:38",-90));
		String a="2016-04-01 10:10:10";
		String b="2016-10-01 12:10:10";
		System.out.println(a.compareTo(b));
	}

	//获取当前时间加减后的日期
		public static String lastDays(int n){
			String resultdate="";
			try {
				//获取几天之前的时间
				SimpleDateFormat formatDate = new SimpleDateFormat("yyyy-MM-dd");  //字符串转换
				Calendar c = Calendar.getInstance();
				c.setTimeInMillis(new Date().getTime());
				c.add(Calendar.DATE, n);//多少天后的日期
				Date date= new Date(c.getTimeInMillis()); //将c转换成Date
				resultdate=formatDate.format(date);
			} catch (Exception e) {
				resultdate="";
				e.printStackTrace();
			}
			return resultdate; 
		}

}