package com.zhongzheng.common.utils;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import cn.hutool.core.lang.Validator;
import org.apache.commons.lang3.RandomStringUtils;
import org.apache.commons.lang3.time.DateFormatUtils;

/**
 * 时间工具类
 *
 * @author zhongzheng
 */
public class DateUtils extends org.apache.commons.lang3.time.DateUtils
{
    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 dateTimeThrow(final String format, final String ts) throws ParseException {
        return new SimpleDateFormat(format).parse(ts);
    }

    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);
        }
    }

    public static final Long dateTimeSec(final String format, final String ts)
    {
        try
        {
            return (new SimpleDateFormat(format).parse(ts)).getTime()/1000;
        }
        catch (ParseException e)
        {

            throw new RuntimeException(e);
        }
    }

    public static String timestampToDateFormat(Long times){
        if(Validator.isEmpty(times)){
            return "";
        }
        long t = times.longValue();
        t = t * 1000;
        Date date = new Date(t);
        return DateFormatUtils.format(date, "yyyy/MM/dd");
    }

    public static String timestampToDateFormat(Long times,String patternStr){
        if(Validator.isEmpty(times)){
            return "";
        }
        long t = times.longValue();
        t = t * 1000;
        Date date = new Date(t);
        return DateFormatUtils.format(date, patternStr);
    }

    public static String timestampToDate(Long times){
        if(Validator.isEmpty(times)){
            return "";
        }
        long t = times.longValue();
        t = t * 1000;
        Date date = new Date(t);
        return dateTime(date);
    }

    /**
     * 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";
    }

    public static Long getNowTime()
    {
        return System.currentTimeMillis()/1000;
    }

    /**
     * 获取今天凌晨时间戳
     */
    public static Long getTodayZeroTime()
    {
        Calendar cal = Calendar.getInstance();
        cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
        return cal.getTimeInMillis() / 1000;  //今天凌晨
    }

    /**
     * 获取明天凌晨时间戳
     */
    public static Long getTomorrowZeroTime()
    {
        Calendar cal = Calendar.getInstance();
        cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
        Calendar cal1 = Calendar.getInstance();
        cal1.setTime(cal.getTime());
        cal1.add(Calendar.DAY_OF_MONTH , +1);
        return cal1.getTimeInMillis() / 1000; //明天凌晨
    }

    /**
     * 获取当月第一天的凌晨时间戳
     */
    public static Long getToMonthZeroTime()
    {
        Calendar cal = Calendar.getInstance();
        cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), 1, 0, 0, 0);
        return cal.getTime().getTime()/1000;
    }

    /**
     * 根据当前日期获得所在周的日期区间（周一和周日日期）
     */
    public static Map<String, Long> getTimeInterval(Date date){
        Map<String, Long> map = new HashMap<>();
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        // 判断要计算的日期是否是周日，如果是则减一天计算周六的，否则会出问题，计算到下一周去了
        int dayWeek = cal.get(Calendar.DAY_OF_WEEK);// 获得当前日期是一个星期的第几天
        if(1 == dayWeek){
            cal.add(Calendar.DAY_OF_MONTH,-1);
        }
        // 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 day = cal.get(Calendar.DAY_OF_WEEK);
        // 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() - day);
        Long imptimeBegin = cal.getTime().getTime();
        cal.add(Calendar.DATE,6);
        Long imptimeEnd = cal.getTime().getTime();
        map.put("start", imptimeBegin/1000);
        map.put("end", imptimeEnd/1000);
        return map;
    }


    /**
     * 根据当前日期获得上周的日期区间（上周周一和周日日期）
     */
    public static Map<String, Long> getLastTimeInterval(Date date){
        Map<String, Long> map = new HashMap<>();
        Calendar calendar1 = Calendar.getInstance();
        Calendar calendar2 = Calendar.getInstance();
        calendar1.setTime(date);
        calendar2.setTime(date);
        int dayOfWeek = calendar1.get(Calendar.DAY_OF_WEEK) - 1;
        if(dayOfWeek <= 0){
            dayOfWeek = 7;
        }
        int offset1 = 1 - dayOfWeek;
        int offset2 = 7 - dayOfWeek;
        calendar1.add(Calendar.DATE, offset1 - 7);
        calendar2.add(Calendar.DATE, offset2 - 7);
        // last Monday
        Long lastBeginDate = calendar1.getTime().getTime();
        // last Sunday
        Long lastEndDate = calendar2.getTime().getTime();
        map.put("laststart", lastBeginDate/1000);
        map.put("lastend", lastEndDate/1000);
        return map;
    }

    /**
     * 获取日期格式订单号
     * @return
     */
    public static String getDateOrderSn()
    {
        DateTimeFormatter ofPattern = DateTimeFormatter.ofPattern("yyyyMMddHHmmss");
        String localDate = (LocalDateTime.now().format(ofPattern)).substring(2);
        //随机数
        String randomNumeric = RandomStringUtils.randomNumeric(8);
        return localDate+randomNumeric;
    }

    public static String getDateInputOrderSn()
    {
        return "LD"+getDateOrderSn();
    }

    public static String getPayOrderSn()
    {
        return "P"+getDateOrderSn();
    }

    public static String secToTime(int time) {
        String timeStr = null;
        int hour = 0;
        int minute = 0;
        int second = 0;
        if (time <= 0)
            return "00:00";
        else {
            minute = time / 60;
            if (minute < 60) {
                second = time % 60;
                timeStr = "00:"+unitFormat(minute) + ":" + unitFormat(second);
            } else {
                hour = minute / 60;
                if (hour > 99)
                    return "99:59:59";
                minute = minute % 60;
                second = time - hour * 3600 - minute * 60;
                timeStr = unitFormat(hour) + ":" + unitFormat(minute) + ":" + unitFormat(second);
            }
        }
        return timeStr;
    }

    public static String unitFormat(int i) {
        String retStr = null;
        if (i >= 0 && i < 10)
            retStr = "0" + Integer.toString(i);
        else
            retStr = "" + i;
        return retStr;
    }

    public static Integer durationFormat(String duration) {
        int index1=duration.indexOf(":");
        int index2=duration.indexOf(":",index1+1);
        int hh=Integer.parseInt(duration.substring(0,index1));
        int mi=Integer.parseInt(duration.substring(index1+1,index2));
        int ss=Integer.parseInt(duration.substring(index2+1));
        return hh*60*60+mi*60+ss;
    }

}