package com.ltkj.web.config.wordUtil;

import org.apache.commons.lang3.StringUtils;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

/**
 * <p> 时间工具类 </p>
 *
 * @description:
 * @author: zjh
 * @date: 2019/8/18 0018 12:57
 */
public class DateTimeUtils {

    public static final String DATE_TIME_PATTERN = "yyyy-MM-dd HH:mm:ss";
    public static final String MINUTE_PATTERN = "yyyy-MM-dd HH:mm";
    public static final String HOUR_PATTERN = "yyyy-MM-dd HH:mm:ss";
    public static final String DATE_PATTERN = "yyyy-MM-dd";
    public static final String MONTH_PATTERN = "yyyy-MM";
    public static final String YEAR_PATTERN = "yyyy";
    public static final String MINUTE_ONLY_PATTERN = "mm";
    public static final String HOUR_ONLY_PATTERN = "HH";


    public static final String[] PARSE_PATTERNS = {
            "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
            "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
            "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM",
            "yyyyMMddHHmm"
    };

    /**
     * 将Date日期时间格式转成指定字符串格式 yyyy-MM-dd HH:mm:ss
     *
     * @param date:
     * @return: java.lang.String
     */
    public static String dateToDateTimeString(Date date) throws ParseException {
        return DateTimeUtils.dateFormat(date, DateTimeUtils.DATE_TIME_PATTERN);
    }

    public static final String parseDateToStr(final String format, final Date date) {
        return new SimpleDateFormat(format).format(date);
    }

    /**
     * 获取服务器启动时间
     */
    public static Date getServerStartDate() {
        long time = ManagementFactory.getRuntimeMXBean().getStartTime();
        return new Date(time);
    }

    /**
     * 计算两个时间差
     */
    public static String getDatePoor(Date endDate, Date nowDate) {
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        // long ns = 1000;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        // long sec = diff % nd % nh % nm / ns;
        return day + "天" + hour + "小时" + min + "分钟";
    }

    // 下面暂未实践 ----------------------------------------------------------------

    /**
     * 日期相加减天数
     *
     * @param date        如果为Null，则为当前时间
     * @param days        加减天数
     * @param includeTime 是否包括时分秒,true表示包含
     * @return
     * @throws ParseException
     */
    public static Date dateAdd(Date date, int days, boolean includeTime) throws ParseException {
        if (date == null) {
            date = new Date();
        }
        if (!includeTime) {
            SimpleDateFormat sdf = new SimpleDateFormat(DateTimeUtils.DATE_PATTERN);
            date = sdf.parse(sdf.format(date));
        }
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        cal.add(Calendar.DATE, days);
        return cal.getTime();
    }

    /**
     * 时间格式化成字符串
     *
     * @param date    Date
     * @param pattern StringUtils.DATE_TIME_PATTERN || StringUtils.DATE_PATTERN， 如果为空，则为yyyy-MM-dd
     * @return
     * @throws ParseException
     */
    public static String dateFormat(Date date, String pattern) throws ParseException {
        if (StringUtils.isBlank(pattern)) {
            pattern = DateTimeUtils.DATE_PATTERN;
        }
        SimpleDateFormat sdf = new SimpleDateFormat(pattern);
        return sdf.format(date);
    }

    /**
     * 字符串解析成时间对象
     *
     * @param dateTimeString String
     * @param pattern        StringUtils.DATE_TIME_PATTERN || StringUtils.DATE_PATTERN，如果为空，则为yyyy-MM-dd
     * @return
     * @throws ParseException
     */
    public static Date dateParse(String dateTimeString, String pattern) throws ParseException {
        if (StringUtils.isBlank(pattern)) {
            pattern = DateTimeUtils.DATE_PATTERN;
        }
        SimpleDateFormat sdf = new SimpleDateFormat(pattern);
        return sdf.parse(dateTimeString);
    }

    /**
     * 将日期时间格式成只有日期的字符串（可以直接使用dateFormat，Pattern为Null进行格式化）
     *
     * @param dateTime Date
     * @return
     * @throws ParseException
     */
    public static String dateTimeToDateString(Date dateTime) throws ParseException {
        String dateTimeString = DateTimeUtils.dateFormat(dateTime, DateTimeUtils.DATE_TIME_PATTERN);
        return dateTimeString.substring(0, 10);
    }

    /**
     * 当时、分、秒为00:00:00时，将日期时间格式成只有日期的字符串，
     * 当时、分、秒不为00:00:00时，直接返回
     *
     * @param dateTime Date
     * @return
     * @throws ParseException
     */
    public static String dateTimeToDateStringIfTimeEndZero(Date dateTime) throws ParseException {
        String dateTimeString = DateTimeUtils.dateFormat(dateTime, DateTimeUtils.DATE_TIME_PATTERN);
        if (dateTimeString.endsWith("00:00:00")) {
            return dateTimeString.substring(0, 10);
        } else {
            return dateTimeString;
        }
    }

    /**
     * 将日期时间格式成日期对象，和dateParse互用
     *
     * @param dateTime Date
     * @return Date
     * @throws ParseException
     */
    public static Date dateTimeToDate(Date dateTime) throws ParseException {
        Calendar cal = Calendar.getInstance();
        cal.setTime(dateTime);
        cal.set(Calendar.HOUR_OF_DAY, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);
        return cal.getTime();
    }

    /**
     * 时间加减小时
     *
     * @param startDate 要处理的时间，Null则为当前时间
     * @param hours     加减的小时
     * @return Date
     */
    public static Date dateAddHours(Date startDate, int hours) {
        if (startDate == null) {
            startDate = new Date();
        }
        Calendar c = Calendar.getInstance();
        c.setTime(startDate);
        c.set(Calendar.HOUR, c.get(Calendar.HOUR) + hours);
        return c.getTime();
    }

    /**
     * 时间加减分钟
     *
     * @param startDate 要处理的时间，Null则为当前时间
     * @param minutes   加减的分钟
     * @return
     */
    public static Date dateAddMinutes(Date startDate, int minutes) {
        if (startDate == null) {
            startDate = new Date();
        }
        Calendar c = Calendar.getInstance();
        c.setTime(startDate);
        c.set(Calendar.MINUTE, c.get(Calendar.MINUTE) + minutes);
        return c.getTime();
    }

    /**
     * 时间加减秒数
     *
     * @param startDate 要处理的时间，Null则为当前时间
     * @param seconds   加减的秒数
     * @return
     */
    public static Date dateAddSeconds(Date startDate, int seconds) {
        if (startDate == null) {
            startDate = new Date();
        }
        Calendar c = Calendar.getInstance();
        c.setTime(startDate);
        c.set(Calendar.SECOND, c.get(Calendar.SECOND) + seconds);
        return c.getTime();
    }

    /**
     * 时间加减天数
     *
     * @param startDate 要处理的时间，Null则为当前时间
     * @param days      加减的天数
     * @return Date
     */
    public static Date dateAddDays(Date startDate, int days) {
        if (startDate == null) {
            startDate = new Date();
        }
        Calendar c = Calendar.getInstance();
        c.setTime(startDate);
        c.set(Calendar.DATE, c.get(Calendar.DATE) + days);
        return c.getTime();
    }

    /**
     * 时间加减月数
     *
     * @param startDate 要处理的时间，Null则为当前时间
     * @param months    加减的月数
     * @return Date
     */
    public static Date dateAddMonths(Date startDate, int months) {
        if (startDate == null) {
            startDate = new Date();
        }
        Calendar c = Calendar.getInstance();
        c.setTime(startDate);
        c.set(Calendar.MONTH, c.get(Calendar.MONTH) + months);
        return c.getTime();
    }

    /**
     * 时间加减年数
     *
     * @param startDate 要处理的时间，Null则为当前时间
     * @param years     加减的年数
     * @return Date
     */
    public static Date dateAddYears(Date startDate, int years) {
        if (startDate == null) {
            startDate = new Date();
        }
        Calendar c = Calendar.getInstance();
        c.setTime(startDate);
        c.set(Calendar.YEAR, c.get(Calendar.YEAR) + years);
        return c.getTime();
    }

    /**
     * 时间比较（如果myDate>compareDate返回1，<返回-1，相等返回0）
     *
     * @param myDate      时间
     * @param compareDate 要比较的时间
     * @return int
     */
    public static int dateCompare(Date myDate, Date compareDate) {
        Calendar myCal = Calendar.getInstance();
        Calendar compareCal = Calendar.getInstance();
        myCal.setTime(myDate);
        compareCal.setTime(compareDate);
        return myCal.compareTo(compareCal);
    }

    /**
     * 获取两个时间中最小的一个时间
     *
     * @param date
     * @param compareDate
     * @return
     */
    public static Date dateMin(Date date, Date compareDate) {
        if (date == null) {
            return compareDate;
        }
        if (compareDate == null) {
            return date;
        }
        if (1 == dateCompare(date, compareDate)) {
            return compareDate;
        } else if (-1 == dateCompare(date, compareDate)) {
            return date;
        }
        return date;
    }

    /**
     * 获取两个时间中最大的一个时间
     *
     * @param date
     * @param compareDate
     * @return
     */
    public static Date dateMax(Date date, Date compareDate) {
        if (date == null) {
            return compareDate;
        }
        if (compareDate == null) {
            return date;
        }
        if (1 == dateCompare(date, compareDate)) {
            return date;
        } else if (-1 == dateCompare(date, compareDate)) {
            return compareDate;
        }
        return date;
    }

    /**
     * 获取两个日期（不含时分秒）相差的天数，不包含今天
     *
     * @param startDate
     * @param endDate
     * @return
     * @throws ParseException
     */
    public static int dateBetween(Date startDate, Date endDate) throws ParseException {
        Date dateStart = dateParse(dateFormat(startDate, DATE_PATTERN), DATE_PATTERN);
        Date dateEnd = dateParse(dateFormat(endDate, DATE_PATTERN), DATE_PATTERN);
        return (int) ((dateEnd.getTime() - dateStart.getTime()) / 1000 / 60 / 60 / 24);
    }

    /**
     * 获取两个日期（不含时分秒）相差的天数，包含今天
     *
     * @param startDate
     * @param endDate
     * @return
     * @throws ParseException
     */
    public static int dateBetweenIncludeToday(Date startDate, Date endDate) throws ParseException {
        return dateBetween(startDate, endDate) + 1;
    }

    /**
     * 获取日期时间的年份，如2017-02-13，返回2017
     *
     * @param date
     * @return
     */
    public static int getYear(Date date) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        return cal.get(Calendar.YEAR);
    }

    /**
     * 获取日期时间的月份，如2017年2月13日，返回2
     *
     * @param date
     * @return
     */
    public static int getMonth(Date date) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        return cal.get(Calendar.MONTH) + 1;
    }

    /**
     * 获取日期时间的第几天（即返回日期的dd），如2017-02-13，返回13
     *
     * @param date
     * @return
     */
    public static int getDate(Date date) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        return cal.get(Calendar.DATE);
    }

    /**
     * 获取日期时间当月的总天数，如2017-02-13，返回28
     *
     * @param date
     * @return
     */
    public static int getDaysOfMonth(Date date) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        return cal.getActualMaximum(Calendar.DATE);
    }

    /**
     * 获取日期时间当年的总天数，如2017-02-13，返回2017年的总天数
     *
     * @param date
     * @return
     */
    public static int getDaysOfYear(Date date) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        return cal.getActualMaximum(Calendar.DAY_OF_YEAR);
    }

    /**
     * 根据时间获取当月最大的日期
     * <li>2017-02-13，返回2017-02-28</li>
     * <li>2016-02-13，返回2016-02-29</li>
     * <li>2016-01-11，返回2016-01-31</li>
     *
     * @param date Date
     * @return
     * @throws Exception
     */
    public static Date maxDateOfMonth(Date date) throws Exception {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        int value = cal.getActualMaximum(Calendar.DATE);
        return dateParse(dateFormat(date, MONTH_PATTERN) + "-" + value, null);
    }

    /**
     * 根据时间获取当月最小的日期，也就是返回当月的1号日期对象
     *
     * @param date Date
     * @return
     * @throws Exception
     */
    public static Date minDateOfMonth(Date date) throws Exception {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        int value = cal.getActualMinimum(Calendar.DATE);
        return dateParse(dateFormat(date, MONTH_PATTERN) + "-" + value, null);
    }

    /*public static void main(String[] args) throws Exception {
     *//*System.out.println(dateTimeToDate(new Date()));
        System.out.println(dateParse("2017-02-04 14:58:20", null));
        System.out.println(dateTimeToDateStringIfTimeEndZero(new Date()));
        System.out.println(dateTimeToDateStringIfTimeEndZero(dateTimeToDate(new Date())));*//*
        //System.out.println(dateBetween(dateParse("2017-01-30", null), dateParse("2017-02-01", null)));
        //System.out.println(dateBetweenIncludeToday(dateParse("2017-01-30", null), dateParse("2017-02-01", null)));
        System.out.println(getDate(dateParse("2017-01-17", null)));
        *//*
        System.out.println(getDaysOfMonth(dateParse("2017-02-01", null)));
        System.out.println(getDaysOfYear(dateParse("2017-01-30", null)));*//*
        //System.out.println(dateFormat(dateAddMonths(dateParse("2017-02-07", StringUtils.MONTH_PATTERN), -12), StringUtils.MONTH_PATTERN));
        *//*System.out.println(dateFormat(maxDateOfMonth(dateParse("2016-02", "yyyy-MM")), null));
        System.out.println(dateFormat(minDateOfMonth(dateParse("2016-03-31", null)), null));*//*
    }*/

}