package com.ruoyi.common.core.utils;

import org.apache.commons.lang3.time.DateFormatUtils;
import org.apache.poi.ss.usermodel.DateUtil;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.*;
import java.time.format.DateTimeFormatter;
import java.util.*;

/**
 * 时间工具类
 *
 * @author ruoyi
 */
public class DateUtils extends org.apache.commons.lang3.time.DateUtils
{
    private static TimeZone tz = TimeZone.getTimeZone("GMT+8");

    public static String YYYY = "yyyy";

    public static String YYYY_MM = "yyyy-MM";

    public static String YYYY_MM_DD = "yyyy-MM-dd";

    public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

    public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";

    private static String[] parsePatterns = {
            "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"};

    /**
     * 获取当前Date型日期
     *
     * @return Date() 当前日期
     */
    public static Date getNowDate()
    {
        return new Date();
    }

    /**
     * 获取当前日期, 默认格式为yyyy-MM-dd
     *
     * @return String
     */
    public static String getDate()
    {
        return dateTimeNow(YYYY_MM_DD);
    }

    public static final String getTime()
    {
        return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
    }

    public static final String dateTimeNow()
    {
        return dateTimeNow(YYYYMMDDHHMMSS);
    }

    public static final String dateTimeNow(final String format)
    {
        return parseDateToStr(format, new Date());
    }

    public static final String dateTime(final Date date)
    {
        return parseDateToStr(YYYY_MM_DD, date);
    }

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

    public static final Date dateTime(final String format, final String ts)
    {
        try
        {
            return new SimpleDateFormat(format).parse(ts);
        }
        catch (ParseException e)
        {
            throw new RuntimeException(e);
        }
    }

    /**
     * 日期路径 即年/月/日 如2018/08/08
     */
    public static final String datePath()
    {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyy/MM/dd");
    }

    /**
     * 日期路径 即年/月/日 如20180808
     */
    public static final String dateTime()
    {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyyMMdd");
    }

    /**
     * 日期型字符串转化为日期 格式
     */
    public static Date parseDate(Object str)
    {
        if (str == null)
        {
            return null;
        }
        try
        {
            return parseDate(str.toString(), parsePatterns);
        }
        catch (ParseException e)
        {
            return null;
        }
    }

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

    /**
     * 计算时间差
     *
     * @param endTime 最后时间
     * @param startTime 开始时间
     * @return 时间差（天/小时/分钟）
     */
    public static String timeDistance(Date endTime, Date startTime)
    {
        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 = endTime.getTime() - startTime.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";
    }

    /**
     * 增加 LocalDateTime ==> Date
     */
    public static Date toDate(LocalDateTime temporalAccessor)
    {
        ZonedDateTime zdt = temporalAccessor.atZone(ZoneId.systemDefault());
        return Date.from(zdt.toInstant());
    }

    /**
     * 增加 LocalDate ==> Date
     */
    public static Date toDate(LocalDate temporalAccessor)
    {
        LocalDateTime localDateTime = LocalDateTime.of(temporalAccessor, LocalTime.of(0, 0, 0));
        ZonedDateTime zdt = localDateTime.atZone(ZoneId.systemDefault());
        return Date.from(zdt.toInstant());
    }

    /**
     * 计算两个日期之间相差的天数
     *
     * @param smdate 较小的时间
     * @param bdate  较大的时间
     * @return 相差天数
     */
    public static int daysBetween(Date smdate, Date bdate) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(smdate);
        long time1 = cal.getTimeInMillis();
        cal.setTime(bdate);
        long time2 = cal.getTimeInMillis();
        long days = (time2 - time1) / (1000 * 3600 * 24);
        return Integer.parseInt(String.valueOf(days));
    }

    /**
     * 得到系统日期
     *
     * @return
     */
    public static Date getDateTime() {
        TimeZone.setDefault(tz);
        return new Date();
    }

    /**
     * 字符串日期转Date yyyy-MM-dd HH:mm:ss
     *
     * @param dateStr
     * @return
     */
    public static Date getDate_str3(String dateStr) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        sdf.setTimeZone(tz);
        if ("".equals(dateStr)) {
            dateStr = sdf.format(DateUtils.getDateTime());
        }
        Date date = null;
        try {
            date = sdf.parse(dateStr);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return date;
    }

    /**
     * 指定日期所在周的周一和周日时间
     *
     * @return 结果集
     */
    public static Map<String, Date> getWeekDate(Date date) {
        Map<String, Date> map = new HashMap<>(2);
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        // 设置一个星期的第一天，按中国的习惯一个星期的第一天是星期一
        cal.setFirstDayOfWeek(Calendar.MONDAY);
        // 获得当前日期是一个星期的第几天
        int dayWeek = cal.get(Calendar.DAY_OF_WEEK);
        if (dayWeek == 1) {
            dayWeek = 8;
        }
        // 根据日历的规则，给当前日期减去星期几与一个星期第一天的差值
        cal.add(Calendar.DATE, cal.getFirstDayOfWeek() - dayWeek);
        Date mondayDate = cal.getTime();
        cal.add(Calendar.DATE, 4 + cal.getFirstDayOfWeek());
        Date sundayDate = cal.getTime();
        map.put("first", mondayDate);
        map.put("last", sundayDate);
        return map;
    }

    /**
     * 指定日期所在月的第一天/最后一天时间
     *
     * @return 结果集
     */
    public static Map<String, Date> getMonthDate(Date date) {
        Map<String, Date> map = new HashMap<>(2);
        Calendar cal = Calendar.getInstance();
        //设置指定日期
        cal.setTime(date);
        //获取当月第一天日期
        int first = cal.getActualMinimum(Calendar.DAY_OF_MONTH);
        cal.set(Calendar.DAY_OF_MONTH, first);
        Date firstDay = cal.getTime();
        map.put("first", firstDay);
        //获取当月最后一天日期
        int last = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
        cal.set(Calendar.DAY_OF_MONTH, last);
        Date lastDay = cal.getTime();
        map.put("last", lastDay);
        return map;
    }

    /**
     * 指定日期所在年的第一天/最后一天时间
     *
     * @return 结果集
     */
    public static Map<String, Date> getYearDate(Date date) {
        Map<String, Date> map = new HashMap<>(2);
        Calendar cal = Calendar.getInstance();
        //设置指定日期
        cal.setTime(date);
        //获取本年第一天日期
        int first = cal.getActualMinimum(Calendar.DAY_OF_YEAR);
        cal.set(Calendar.DAY_OF_YEAR, first);
        Date firstDay = cal.getTime();
        map.put("first", firstDay);
        //获取本年最后一天日期
        int last = cal.getActualMaximum(Calendar.DAY_OF_YEAR);
        cal.set(Calendar.DAY_OF_YEAR, last);
        Date lastDay = cal.getTime();
        map.put("last", lastDay);
        return map;
    }

    /**
     * 分别获取日期中的年月日
     *
     * @param date 需要获取的日期
     * @return 结果集合
     */
    public static Map<String, String> getYearMonthDay(Date date) {
        String year = String.format("%tY", date);
        String month = String.format("%tm", date);
        String day = String.format("%td", date);
        Map<String, String> result = new HashMap<>(3);
        result.put("year", year);
        result.put("month", month);
        result.put("day", day);
        result.put("time", String.valueOf(date.getTime()));
        return result;
    }

    /**
     * Date转为LocalDateTime
     *
     * @param date 日期
     * @return LocalDateTime
     */
    public static LocalDateTime dateToLocalDateTime(Date date) {
        Instant instant = date.toInstant();
        ZoneId zoneId = ZoneId.systemDefault();
        return instant.atZone(zoneId).toLocalDateTime();
    }

    /**
     * LocalDateTime转Date
     *
     * @param dateTime 日期
     * @return Date
     */
    public static Date localDateTimeToDate(LocalDateTime dateTime) {
        ZoneId zoneId = ZoneId.systemDefault();
        ZonedDateTime zdt = dateTime.atZone(zoneId);
        return Date.from(zdt.toInstant());
    }

    /**
     * 获取当天的00:00:00
     *
     * @return
     */
    public static LocalDateTime getDayStart(LocalDateTime time) {
        return time.with(LocalTime.MIN);
    }


    /**
     * 获取当天的23:59:59
     *
     * @return
     */
    public static LocalDateTime getDayEnd(LocalDateTime time) {
        return time.with(LocalTime.MAX);
    }
    /**
     * string转LocalTime
     *
     * @return
     */
    public static LocalTime string2LocalTime(String time) {
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("HH:mm:ss");
        return LocalTime.parse(time, formatter);
    }

    /**
     * localdatetime转为字符串
     *
     * @param time localdatetime
     * @return 字符串
     */
    public static String localDateTimeToString(LocalDateTime time) {
        DateTimeFormatter df = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        return df.format(time);
    }


}