/**
 * Copyright (c) 2013-Now http://jeesite.com All rights reserved.
 */
package com.ruoyi.common.core.lang;

import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.time.FastDateFormat;

import java.lang.management.ManagementFactory;
import java.math.BigDecimal;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.util.Calendar;
import java.util.Date;

/**
 * 日期工具类, 继承org.apache.commons.lang.time.DateUtils类
 * @author ThinkGem
 * @version 2017-1-4
 */
@Slf4j
public class DateUtils extends org.apache.commons.lang3.time.DateUtils {
	
	private static String[] parsePatterns = {
		"yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM-dd HH", "yyyy-MM",
		"yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM/dd HH", "yyyy/MM",
		"yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM.dd HH", "yyyy.MM", 
		"yyyy年MM月dd日", "yyyy年MM月dd日 HH时mm分ss秒", "yyyy年MM月dd日 HH时mm分", "yyyy年MM月dd日 HH时", "yyyy年MM月",
		"yyyy"};
	
	/**
	 * 得到日期字符串 ，转换格式（yyyy-MM-dd）
	 */
	public static String formatDate(Date date) {
		return formatDate(date, "yyyy-MM-dd");
	}
	
	/**
	 * 得到日期字符串 默认格式（yyyy-MM-dd） pattern可以为："yyyy-MM-dd" "HH:mm:ss" "E"
	 */
	public static String formatDate(long dateTime, String pattern) {
		return formatDate(new Date(dateTime), pattern);
	}
	
	/**
	 * 得到日期字符串 默认格式（yyyy-MM-dd） pattern可以为："yyyy-MM-dd" "HH:mm:ss" "E"
	 */
	public static String formatDate(Date date, String pattern) {
		String formatDate = null;
		if (date != null){
//			if (StringUtils.isNotBlank(pattern)) {
//				formatDate = DateFormatUtils.format(date, pattern);
//			} else {
//				formatDate = DateFormatUtils.format(date, "yyyy-MM-dd");
//			}
			if (StringUtils.isBlank(pattern)) {
				pattern = "yyyy-MM-dd";
			}
			formatDate = FastDateFormat.getInstance(pattern).format(date);
		}
		return formatDate;
	}
	
	/**
	 * 得到日期时间字符串，转换格式（yyyy-MM-dd HH:mm:ss）
	 */
	public static String formatDateTime(Date date) {
		return formatDate(date, "yyyy-MM-dd HH:mm:ss");
	}
    
	/**
	 * 得到当前日期字符串 格式（yyyy-MM-dd）
	 */
	public static String getDate() {
		return getDate("yyyy-MM-dd");
	}
	
	/**
	 * 得到当前日期字符串 格式（yyyy-MM-dd） pattern可以为："yyyy-MM-dd" "HH:mm:ss" "E"
	 */
	public static String getDate(String pattern) {
		return FastDateFormat.getInstance(pattern).format(new Date());
	}
	
	/**
	 * 得到当前日期前后多少天，月，年的日期字符串
	 * @param pattern 格式（yyyy-MM-dd） pattern可以为："yyyy-MM-dd" "HH:mm:ss" "E"
	 * @param amont 数量，前为负数，后为正数
	 * @param type 类型，可参考Calendar的常量(如：Calendar.HOUR、Calendar.MINUTE、Calendar.SECOND)
	 * @return
	 */
	public static String getDate(String pattern, int amont, int type) {
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(new Date());
		calendar.add(type, amont);
		return FastDateFormat.getInstance(pattern).format(calendar.getTime());
	}
	
	/**
	 * 得到当前时间字符串 格式（HH:mm:ss）
	 */
	public static String getTime() {
		return formatDate(new Date(), "HH:mm:ss");
	}

	/**
	 * 得到当前日期和时间字符串 格式（yyyy-MM-dd HH:mm:ss）
	 */
	public static String getDateTime() {
		return formatDate(new Date(), "yyyy-MM-dd HH:mm:ss");
	}

	/**
	 * 得到当前年份字符串 格式（yyyy）
	 */
	public static String getYear() {
		return formatDate(new Date(), "yyyy");
	}

	/**
	 * 得到当前月份字符串 格式（MM）
	 */
	public static String getMonth() {
		return formatDate(new Date(), "MM");
	}

	/**
	 * 得到当天字符串 格式（dd）
	 */
	public static String getDay() {
		return formatDate(new Date(), "dd");
	}

	/**
	 * 得到当前星期字符串 格式（E）星期几
	 */
	public static String getWeek() {
		return formatDate(new Date(), "E");
	}
	
	/**
	 * 日期型字符串转化为日期 格式   see to DateUtils#parsePatterns
	 */
	public static Date parseDate(Object str) {
		if (str == null){
			return null;
		}
		try {
			return parseDate(str.toString(), parsePatterns);
		} catch (ParseException e) {
			return null;
		}
	}

	/**
	 * 获取过去的天数
	 * @param date
	 * @return
	 */
	public static long pastDays(Date date) {
		long t = System.currentTimeMillis()-date.getTime();
		return t/(24*60*60*1000);
	}

	/**
	 * 获取过去的小时
	 * @param date
	 * @return
	 */
	public static long pastHour(Date date) {
		long t = System.currentTimeMillis()-date.getTime();
		return t/(60*60*1000);
	}
	
	/**
	 * 获取过去的分钟
	 * @param date
	 * @return
	 */
	public static long pastMinutes(Date date) {
		long t = System.currentTimeMillis()-date.getTime();
		return t/(60*1000);
	}
    
	/**
	 * 获取两个日期之间的天数
	 * 
	 * @param before
	 * @param after
	 * @return
	 */
	public static double getDistanceOfTwoDate(Date before, Date after) {
		long beforeTime = before.getTime();
		long afterTime = after.getTime();
		return (afterTime - beforeTime) / (1000d * 60 * 60 * 24);
	}

	/**
	 * 获取两个日期之间的小时数
	 *
	 * @param before
	 * @param after
	 * @return
	 */
	public static double getDistanceHourOfTwoDate(Date before, Date after) {
		long beforeTime = before.getTime();
		long afterTime = after.getTime();
		BigDecimal b   =   new   BigDecimal((afterTime - beforeTime) / (1000d * 60 * 60 ));
		return  b.setScale(2,   BigDecimal.ROUND_HALF_UP).doubleValue();
	}
	
	/**
	 * 获取某月有几天
	 * @param date 日期
	 * @return 天数
	 */
	public static int getMonthHasDays(Date date){
		String yyyyMM = FastDateFormat.getInstance("yyyyMM").format(date);
		String year = yyyyMM.substring(0, 4);
		String month = yyyyMM.substring(4, 6);
		String day31 = ",01,03,05,07,08,10,12,";
		String day30 = "04,06,09,11";
		int day = 0;
		if (day31.contains(month)) {
			day = 31;
		} else if (day30.contains(month)) {
			day = 30;
		} else {
			int y = Integer.parseInt(year);
			if ((y % 4 == 0 && (y % 100 != 0)) || y % 400 == 0) {
				day = 29;
			} else {
				day = 28;
			}
		}
		return day;
	}
	
	/**
	 * 获取日期是当年的第几周
	 * @param date
	 * @return
	 */
	public static int getWeekOfYear(Date date){
		Calendar cal = Calendar.getInstance(); 
		cal.setTime(date);
		return cal.get(Calendar.WEEK_OF_YEAR);
	}

	/**
	 * 获取当年的第一天
	 * @param year
	 * @return
	 */
	public static Date getCurrYearFirst(){
		Calendar currCal=Calendar.getInstance();
		int currentYear = currCal.get(Calendar.YEAR);
		return getYearFirst(currentYear);
	}


	/**
	 * 获取某年第一天日期
	 * @param year 年份
	 * @return Date
	 */
	public static Date getYearFirst(int year){
		Calendar calendar = Calendar.getInstance();
		calendar.clear();
		calendar.set(Calendar.YEAR, year);
		calendar.set(Calendar.HOUR, 0);
		calendar.set(Calendar.MINUTE, 0);
		calendar.set(Calendar.SECOND, 0);
		Date currYearFirst = calendar.getTime();
		return currYearFirst;
	}


	/**
	 * 获取当月第一天
	 * @return
	 */
	public static Date getMonthFirstDay(){
		Calendar calendar = Calendar.getInstance();
//		calendar.add(Calendar.MONTH, 0);
		calendar.set(Calendar.DAY_OF_MONTH,1);//设置为1号,当前日期既为本月第一天
        calendar.set(Calendar.HOUR_OF_DAY,0);
		calendar.set(Calendar.MINUTE, 0);
		calendar.set(Calendar.SECOND, 0);
        calendar.set(Calendar.MILLISECOND, 0);
		return calendar.getTime();
	}

	/**
	 * 获取当月最后一天
	 * @return
	 */
	public static Date getMonthLastDay(){
		Calendar calendar = Calendar.getInstance();
		calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
        calendar.set(Calendar.HOUR_OF_DAY,23);
		calendar.set(Calendar.MINUTE, 59);
		calendar.set(Calendar.SECOND, 59);
        calendar.set(Calendar.MILLISECOND, 999);
		return calendar.getTime();
	}

	/**
	 * 获取上月最后一天
	 * @return
	 */
	public static Date getPreMonthLastDay(){
		Calendar calendar=Calendar.getInstance();
		calendar.set(Calendar.DAY_OF_MONTH,0);
        calendar.set(Calendar.HOUR_OF_DAY,23);
		calendar.set(Calendar.MINUTE, 59);
		calendar.set(Calendar.SECOND, 59);
        calendar.set(Calendar.MILLISECOND, 999);
		return calendar.getTime();
	}

    /**
     * 获取上月第一天
     * @return
     */
    public static Date getPreMonthFirstDay(){
        Calendar calendar=Calendar.getInstance();
        calendar.add(Calendar.MONTH, -1);
        calendar.set(Calendar.DAY_OF_MONTH,1);
        calendar.set(Calendar.HOUR_OF_DAY,0);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        calendar.set(Calendar.MILLISECOND, 0);
        return calendar.getTime();
    }

	/**
	 * 获取一天的开始时间（如：2015-11-3 00:00:00.000）
	 * @param date 日期
	 * @return
	 */
	public static Date getOfDayFirst(Date date) {
		if (date == null){
			return null;
		}
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(date);
		calendar.set(Calendar.HOUR, 0);
		calendar.set(Calendar.MINUTE, 0);
		calendar.set(Calendar.SECOND, 0);
		calendar.set(Calendar.MILLISECOND, 0);
		return calendar.getTime();
	}
	
	/**
	 * 获取一天的最后时间（如：2015-11-3 23:59:59.999）
	 * @param date 日期
	 * @return
	 */
	public static Date getOfDayLast(Date date) {
		if (date == null){
			return null;
		}
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(date);
		calendar.set(Calendar.HOUR, 23);
		calendar.set(Calendar.MINUTE, 59);
		calendar.set(Calendar.SECOND, 59);
		calendar.set(Calendar.MILLISECOND, 999);
		return calendar.getTime();
	}
	
	/**
	 * 获取服务器启动时间
	 * @param date
	 * @return
	 */
	public static Date getServerStartDate(){
		long time = ManagementFactory.getRuntimeMXBean().getStartTime();
		return new Date(time);
	}
	
	/**
	 * 格式化为日期范围字符串
	 * @param beginDate 2018-01-01
	 * @param endDate 2018-01-31
	 * @return 2018-01-01 ~ 2018-01-31
	 * @author ThinkGem
	 */
	public static String formatDateBetweenString(Date beginDate, Date endDate){
		String begin = DateUtils.formatDate(beginDate);
		String end = DateUtils.formatDate(endDate);
		if (StringUtils.isNoneBlank(begin, end)){
			return begin + " ~ " + end;
		}
		return null;
	}
	
	/**
	 * 解析日期范围字符串为日期对象
	 * @param dateString 2018-01-01 ~ 2018-01-31
	 * @return new Date[]{2018-01-01, 2018-01-31}
	 * @author ThinkGem
	 */
	public static Date[] parseDateBetweenString(String dateString){
		Date beginDate = null; Date endDate = null;
		if (StringUtils.isNotBlank(dateString)){
			String[] ss = StringUtils.split(dateString, "~");
			if (ss != null && ss.length == 2){
				String begin = StringUtils.trim(ss[0]);
				String end = StringUtils.trim(ss[1]);
				if (StringUtils.isNoneBlank(begin, end)){
					beginDate = DateUtils.parseDate(begin);
					endDate = DateUtils.parseDate(end);
				}
			}
		}
		return new Date[]{beginDate, endDate};
	}

	/**
	 *计算年月/type 0:年 1：月
	 * @param
	 * @return
	 */
	public static String getYearMonthToCalculateS (int type, Date date, int num,String pattern) {
		Calendar cal = Calendar.getInstance();
		cal.setTime(date);

		if (type == 0){
			cal.add(Calendar.YEAR, num);
		}
		if (type == 1){
			cal.add(Calendar.MONTH, num);
		}
		if (type == 2){
			cal.add(Calendar.DATE, num);
		}
		return  LocalDate.from(cal.getTime().toInstant().atZone(ZoneId.systemDefault()).toLocalDate()).format(DateTimeFormatter.ofPattern(pattern));
	}

	/**
	 * 格式化时间
	 *
	 * @return
	 */
	public static Date fomatTime(String date,String pattern) {
		DateFormat fmt = new SimpleDateFormat(pattern);
		try {
			return fmt.parse(date);
		} catch (ParseException e) {
			log.error(e.getMessage());
			return null;
		}
	}

	/**
	 * @Title: compareTime
	 * @Description: TODO(时间比较，如果s>e 返回true 否则返回false)
	 * @param s
	 * @param e
	 * @return boolean
	 * @throws
	 * @author luguosui
	 */
	public static boolean compareTime(String s, String e,String pattern) {
		Date beginDate = fomatTime(s,pattern);
		Date endDate = fomatTime(e,pattern);
		if(beginDate==null || endDate==null){
			return false;
		}
		return beginDate.getTime() > endDate.getTime();
	}

	/**
	 * 获取此事件之后的时间
	 * @param date
	 * @param pattern
	 * @param amont
	 * @param type
	 * @return
	 */
	public static String getDate(String date,String pattern, int amont, int type) {
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(fomatTime(date,pattern));
		calendar.add(type, amont);
		return FastDateFormat.getInstance(pattern).format(calendar.getTime());
	}
	/**
	 * 获取此事件之后的时间
	 * @param date
	 * @param pattern
	 * @param amont
	 * @param type
	 * @return
	 */
	public static String getDate(Date date,String pattern, int amont, int type) {
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(date);
		calendar.add(type, amont);
		return FastDateFormat.getInstance(pattern).format(calendar.getTime());
	}

	public static String gpsTimeToLocalTime(String gpsTime){
		DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyyMMddHHmmss");
		LocalDateTime ldt = LocalDateTime.parse(gpsTime, dtf);

		DateTimeFormatter fa = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
		return ldt.format(fa);
	}

	public static Date timeAdd(Date oldTime,long num) {
		return new Date(oldTime.getTime() + num);
	}

	public static Date getDateMonthFirstDay(Date date){
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(date);
		calendar.set(Calendar.DAY_OF_MONTH,1);//设置为1号,当前日期既为本月第一天
		calendar.set(Calendar.HOUR_OF_DAY,0);
		calendar.set(Calendar.MINUTE, 0);
		calendar.set(Calendar.SECOND, 0);
		calendar.set(Calendar.MILLISECOND, 0);
		return calendar.getTime();

	}

	public static Date getDateMonthLastDay(Date date){
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(date);
		int year = calendar.get(Calendar.YEAR);
		int month = calendar.get(Calendar.MONTH);
		calendar.set(Calendar.YEAR, year);
		calendar.set(Calendar.MONTH, month);
		calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
		calendar.set(Calendar.HOUR_OF_DAY,23);
		calendar.set(Calendar.MINUTE, 59);
		calendar.set(Calendar.SECOND, 59);
		calendar.set(Calendar.MILLISECOND, 999);
		return calendar.getTime();
	}

	
//	public static void main(String[] args) throws ParseException {
//		System.out.println(formatDate(parseDate("2010/3/6")));
//		System.out.println(getDate("yyyy年MM月dd日 E"));
//		long time = new Date().getTime()-parseDate("2012-11-19").getTime();
//		System.out.println(time/(24*60*60*1000));
//		System.out.println(getWeekOfYear(new Date()));
//		System.out.println(formatDateTime(getCurrYearFirst()));
//        Calendar calendar = Calendar.getInstance();
//		System.out.println(calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
//		System.out.println(formatDateTime(getMonthFirstDay()));
//        System.out.println(formatDateTime(getMonthLastDay()));
//        System.out.println(getDateMonthFirstDay(parseDate("2019-08-02")));
//		System.out.println(getDateMonthLastDay(parseDate("2019-09-01")));
//	}
	
}