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package com.plumelog.core.util;


import java.sql.Timestamp;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.util.*;

/**
 * className：DateUtil
 * description：DateUtil
 *
 * @author Frank.chen
 * @version 1.0.0
 */
public class DateUtil {

    // ==格式到年==
    /**
     * 日期格式，年份，例如：2004，2008
     */
    public static final String DATE_FORMAT_YYYY = "yyyy";


    // ==格式到年月 ==
    /**
     * 日期格式，年份和月份，例如：200707，200808
     */
    public static final String DATE_FORMAT_YYYYMM = "yyyyMM";

    /**
     * 日期格式，年份和月份，例如：200707，2008-08
     */
    public static final String DATE_FORMAT_YYYY_MM = "yyyy-MM";


    // ==格式到年月日==
    /**
     * 日期格式，年月日，例如：050630，080808
     */
    public static final String DATE_FORMAT_YYMMDD = "yyMMdd";

    /**
     * 日期格式，年月日，用横杠分开，例如：06-12-25，08-08-08
     */
    public static final String DATE_FORMAT_YY_MM_DD = "yy-MM-dd";

    /**
     * 日期格式，年月日，例如：20050630，20080808
     */
    public static final String DATE_FORMAT_YYYYMMDD = "yyyyMMdd";

    /**
     * 日期格式，年月日，用横杠分开，例如：2006-12-25，2008-08-08
     */
    public static final String DATE_FORMAT_YYYY_MM_DD = "yyyy-MM-dd";

    /**
     * 日期格式，年月日，例如：2016.10.05
     */
    public static final String DATE_FORMAT_POINTYYYYMMDD = "yyyy.MM.dd";

    /**
     * 日期格式，年月日，例如：2016年10月05日
     */
    public static final String DATE_TIME_FORMAT_YYYY年MM月DD日 = "yyyy年MM月dd日";


    // ==格式到年月日 时分 ==

    /**
     * 日期格式，年月日时分，例如：200506301210，200808081210
     */
    public static final String DATE_FORMAT_YYYYMMDDHHmm = "yyyyMMddHHmm";

    /**
     * 日期格式，年月日时分，例如：20001230 12:00，20080808 20:08
     */
    public static final String DATE_TIME_FORMAT_YYYYMMDD_HH_MI = "yyyyMMdd HH:mm";

    /**
     * 日期格式，年月日时分，例如：2000-12-30 12:00，2008-08-08 20:08
     */
    public static final String DATE_TIME_FORMAT_YYYY_MM_DD_HH_MI = "yyyy-MM-dd HH:mm";


    // ==格式到年月日 时分秒==
    /**
     * 日期格式，年月日时分秒，例如：20001230120000，20080808200808
     */
    public static final String DATE_TIME_FORMAT_YYYYMMDDHHMISS = "yyyyMMddHHmmss";

    /**
     * 日期格式，年月日时分秒，年月日用横杠分开，时分秒用冒号分开
     * 例如：2005-05-10 23：20：00，2008-08-08 20:08:08
     */
    public static final String DATE_TIME_FORMAT_YYYY_MM_DD_HH_MI_SS = "yyyy-MM-dd HH:mm:ss";


    // ==格式到年月日 时分秒 毫秒==
    /**
     * 日期格式，年月日时分秒毫秒，例如：20001230120000123，20080808200808456
     */
    public static final String DATE_TIME_FORMAT_YYYYMMDDHHMISSSSS = "yyyyMMddHHmmssSSS";


    // ==特殊格式==
    /**
     * 日期格式，月日时分，例如：10-05 12:00
     */
    public static final String DATE_FORMAT_MMDDHHMI = "MM-dd HH:mm";

    private static final DateTimeFormatter DATETIME_FORMAT_NORMAL_SSS = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.SSS");

    /* ************工具方法***************   */

    /**
     * @param epochMillis
     * 获取yyyy-MM-dd HH:mm:ss.SSS格式的字符串
     * @return yyyy-MM-dd HH:mm:ss.SSS格式的字符串
     */
    public static String getDatetimeNormalStrWithMills(long epochMillis) {
        return DATETIME_FORMAT_NORMAL_SSS.format(LocalDateTime.ofInstant(Instant.ofEpochMilli(epochMillis), ZoneId.systemDefault()));
    }

    public static Integer getYear(Date date) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        return cal.get(Calendar.YEAR);
    }


    public static Integer getMonth(Date date) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        return cal.get(Calendar.MONTH) + 1;
    }


    public static Integer getDay(Date date) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        int day = cal.get(Calendar.DATE);//获取日
        return day;
    }


    public static String parseDateToStr(Date time, String timeFromat) {
        DateFormat dateFormat = new SimpleDateFormat(timeFromat);
        return dateFormat.format(time);
    }


    public static String parseTimestampToStr(Timestamp timestamp, String timeFromat) {
        SimpleDateFormat df = new SimpleDateFormat(timeFromat);
        return df.format(timestamp);
    }


    public static String parseDateToStr(Date time, String timeFromat, final Date defaultValue) {
        try {
            DateFormat dateFormat = new SimpleDateFormat(timeFromat);
            return dateFormat.format(time);
        } catch (Exception e) {
            if (defaultValue != null)
                return parseDateToStr(defaultValue, timeFromat);
            else
                return parseDateToStr(new Date(), timeFromat);
        }
    }

    /**
     * 格式化Date时间
     *
     * @param time         Date类型时间
     * @param timeFromat   String类型格式
     * @param defaultValue 默认时间值String类型
     * @return 格式化后的字符串
     */
    public static String parseDateToStr(Date time, String timeFromat, final String defaultValue) {
        try {
            DateFormat dateFormat = new SimpleDateFormat(timeFromat);
            return dateFormat.format(time);
        } catch (Exception e) {
            return defaultValue;
        }
    }


    public static Date parseStrToDate(String time, String timeFromat) {
        if (time == null || time.equals("")) {
            return null;
        }

        Date date = null;
        try {
            DateFormat dateFormat = new SimpleDateFormat(timeFromat);
            date = dateFormat.parse(time);
        } catch (Exception e) {

        }
        return date;
    }


    public static Date parseStrToDate(String strTime, String timeFromat,
                                      Date defaultValue) {
        try {
            DateFormat dateFormat = new SimpleDateFormat(timeFromat);
            return dateFormat.parse(strTime);
        } catch (Exception e) {
            return defaultValue;
        }
    }

    public static Date strToDate(String strTime) {
        if (strTime == null || strTime.trim().length() <= 0)
            return null;

        Date date = null;
        List list = new ArrayList(0);

        list.add(DATE_TIME_FORMAT_YYYY_MM_DD_HH_MI_SS);
        list.add(DATE_TIME_FORMAT_YYYYMMDDHHMISSSSS);
        list.add(DATE_TIME_FORMAT_YYYY_MM_DD_HH_MI);
        list.add(DATE_TIME_FORMAT_YYYYMMDD_HH_MI);
        list.add(DATE_TIME_FORMAT_YYYYMMDDHHMISS);
        list.add(DATE_FORMAT_YYYY_MM_DD);
        //list.add(DATE_FORMAT_YY_MM_DD);
        list.add(DATE_FORMAT_YYYYMMDD);
        list.add(DATE_FORMAT_YYYY_MM);
        list.add(DATE_FORMAT_YYYYMM);
        list.add(DATE_FORMAT_YYYY);


        for (Iterator iter = list.iterator(); iter.hasNext(); ) {
            String format = (String) iter.next();
            if (strTime.indexOf("-") > 0 && format.indexOf("-") < 0)
                continue;
            if (strTime.indexOf("-") < 0 && format.indexOf("-") > 0)
                continue;
            if (strTime.length() > format.length())
                continue;
            date = parseStrToDate(strTime, format);
            if (date != null)
                break;
        }

        return date;
    }


    public static List getMonthListOfDate(String beginDateStr, String endDateStr) {
        // 指定要解析的时间格式
        SimpleDateFormat f = new SimpleDateFormat("yyyy-MM");
        // 返回的月份列表
        String sRet = "";

        // 定义一些变量
        Date beginDate = null;
        Date endDate = null;

        GregorianCalendar beginGC = null;
        GregorianCalendar endGC = null;
        List list = new ArrayList();

        try {
            // 将字符串parse成日期
            beginDate = f.parse(beginDateStr);
            endDate = f.parse(endDateStr);

            // 设置日历
            beginGC = new GregorianCalendar();
            beginGC.setTime(beginDate);

            endGC = new GregorianCalendar();
            endGC.setTime(endDate);

            // 直到两个时间相同
            while (beginGC.getTime().compareTo(endGC.getTime()) <= 0) {
                sRet = beginGC.get(Calendar.YEAR) + "-"
                        + (beginGC.get(Calendar.MONTH) + 1);
                list.add(sRet);
                // 以月为单位，增加时间
                beginGC.add(Calendar.MONTH, 1);
            }
            return list;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }


    public static List getDayListOfDate(String beginDateStr, String endDateStr) {
        // 指定要解析的时间格式
        SimpleDateFormat f = new SimpleDateFormat("yyyy-MM-dd");

        // 定义一些变量
        Date beginDate = null;
        Date endDate = null;

        Calendar beginGC = null;
        Calendar endGC = null;
        List list = new ArrayList();

        try {
            // 将字符串parse成日期
            beginDate = f.parse(beginDateStr);
            endDate = f.parse(endDateStr);

            // 设置日历
            beginGC = Calendar.getInstance();
            beginGC.setTime(beginDate);

            endGC = Calendar.getInstance();
            endGC.setTime(endDate);
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

            // 直到两个时间相同
            while (beginGC.getTime().compareTo(endGC.getTime()) <= 0) {

                list.add(sdf.format(beginGC.getTime()));
                // 以日为单位，增加时间
                beginGC.add(Calendar.DAY_OF_MONTH, 1);
            }
            return list;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }


    public static List getYearListOfYears(int before, int behind) {
        if (before < 0 || behind < 0) {
            return null;
        }
        List list = new ArrayList();
        Calendar c = null;
        c = Calendar.getInstance();
        c.setTime(new Date());
        int currYear = Calendar.getInstance().get(Calendar.YEAR);

        int startYear = currYear - before;
        int endYear = currYear + behind;
        for (int i = startYear; i < endYear; i++) {
            list.add(Integer.valueOf(i));
        }
        return list;
    }


    public static Integer getWeekthOfYear(Date date) {
        Calendar c = new GregorianCalendar();
        c.setFirstDayOfWeek(Calendar.MONDAY);
        c.setMinimalDaysInFirstWeek(7);
        c.setTime(date);

        return c.get(Calendar.WEEK_OF_YEAR);
    }

    public static HashMap getWeekTimeOfYear(int year) {
        HashMap map = new LinkedHashMap();
        Calendar c = new GregorianCalendar();
        c.set(year, Calendar.DECEMBER, 31, 23, 59, 59);
        int count = getWeekthOfYear(c.getTime());

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        String dayOfWeekStart = "";
        String dayOfWeekEnd = "";
        for (int i = 1; i <= count; i++) {
            dayOfWeekStart = sdf.format(getFirstDayOfWeek(year, i));
            dayOfWeekEnd = sdf.format(getLastDayOfWeek(year, i));
            map.put(Integer.valueOf(i), "第" + i + "周(从" + dayOfWeekStart + "至" + dayOfWeekEnd + ")");
        }
        return map;

    }

    public static Integer getWeekCountOfYear(int year) {
        Calendar c = new GregorianCalendar();
        c.set(year, Calendar.DECEMBER, 31, 23, 59, 59);
        int count = getWeekthOfYear(c.getTime());
        return count;
    }


    public static Date getFirstDayOfWeek(Date date) {
        Calendar c = new GregorianCalendar();
        c.setFirstDayOfWeek(Calendar.MONDAY);
        c.setTime(date);
        c.set(Calendar.DAY_OF_WEEK, c.getFirstDayOfWeek()); // Monday
        return c.getTime();
    }

    public static Date getLastDayOfWeek(Date date) {
        Calendar c = new GregorianCalendar();
        c.setFirstDayOfWeek(Calendar.MONDAY);
        c.setTime(date);
        c.set(Calendar.DAY_OF_WEEK, c.getFirstDayOfWeek() + 6); // Sunday
        return c.getTime();
    }


    public static Date getFirstDayOfWeek(int year, int week) {
        Calendar c = new GregorianCalendar();
        c.set(Calendar.YEAR, year);
        c.set(Calendar.MONTH, Calendar.JANUARY);
        c.set(Calendar.DATE, 1);

        Calendar cal = (GregorianCalendar) c.clone();
        cal.add(Calendar.DATE, week * 7);

        return getFirstDayOfWeek(cal.getTime());
    }


    public static Date getLastDayOfWeek(int year, int week) {
        Calendar c = new GregorianCalendar();
        c.set(Calendar.YEAR, year);
        c.set(Calendar.MONTH, Calendar.JANUARY);
        c.set(Calendar.DATE, 1);

        Calendar cal = (GregorianCalendar) c.clone();
        cal.add(Calendar.DATE, week * 7);

        return getLastDayOfWeek(cal.getTime());
    }

    public static Date getFirstDayOfMonth(int year, int month) {
        month = month - 1;
        Calendar c = Calendar.getInstance();
        c.set(Calendar.YEAR, year);
        c.set(Calendar.MONTH, month);

        int day = c.getActualMinimum(Calendar.DAY_OF_MONTH);

        c.set(Calendar.DAY_OF_MONTH, day);
        c.set(Calendar.HOUR_OF_DAY, 0);
        c.set(Calendar.MINUTE, 0);
        c.set(Calendar.SECOND, 0);
        c.set(Calendar.MILLISECOND, 0);
        return c.getTime();
    }

    public static Date getLastDayOfMonth(int year, int month) {
        month = month - 1;
        Calendar c = Calendar.getInstance();
        c.set(Calendar.YEAR, year);
        c.set(Calendar.MONTH, month);
        int day = c.getActualMaximum(Calendar.DAY_OF_MONTH);
        c.set(Calendar.DAY_OF_MONTH, day);
        c.set(Calendar.HOUR_OF_DAY, 23);
        c.set(Calendar.MINUTE, 59);
        c.set(Calendar.SECOND, 59);
        c.set(Calendar.MILLISECOND, 999);
        return c.getTime();
    }

    public static String getDayWeekOfDate1(Date date) {
        String[] weekDays = {"星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"};
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);

        int w = cal.get(Calendar.DAY_OF_WEEK) - 1;
        if (w < 0)
            w = 0;

        return weekDays[w];
    }


    public static Integer getDayWeekOfDate2(Date date) {
        Calendar aCalendar = Calendar.getInstance();
        aCalendar.setTime(date);
        int weekDay = aCalendar.get(Calendar.DAY_OF_WEEK);
        return weekDay;
    }


    public static boolean validateIsDate(String strTime) {
        if (strTime == null || strTime.trim().length() <= 0)
            return false;

        Date date = null;
        List list = new ArrayList(0);

        list.add(DATE_TIME_FORMAT_YYYY_MM_DD_HH_MI_SS);
        list.add(DATE_TIME_FORMAT_YYYYMMDDHHMISSSSS);
        list.add(DATE_TIME_FORMAT_YYYY_MM_DD_HH_MI);
        list.add(DATE_TIME_FORMAT_YYYYMMDD_HH_MI);
        list.add(DATE_TIME_FORMAT_YYYYMMDDHHMISS);
        list.add(DATE_FORMAT_YYYY_MM_DD);
        //list.add(DATE_FORMAT_YY_MM_DD);
        list.add(DATE_FORMAT_YYYYMMDD);
        //list.add(DATE_FORMAT_YYYY_MM);
        //list.add(DATE_FORMAT_YYYYMM);
        //list.add(DATE_FORMAT_YYYY);

        for (Iterator iter = list.iterator(); iter.hasNext(); ) {
            String format = (String) iter.next();
            if (strTime.indexOf("-") > 0 && format.indexOf("-") < 0)
                continue;
            if (strTime.indexOf("-") < 0 && format.indexOf("-") > 0)
                continue;
            if (strTime.length() > format.length())
                continue;
            date = parseStrToDate(strTime.trim(), format);
            if (date != null)
                break;
        }

        if (date != null) {
            System.out.println("生成的日期:" + DateUtil.parseDateToStr(date, DateUtil.DATE_TIME_FORMAT_YYYY_MM_DD_HH_MI_SS, "--null--"));
            return true;
        }
        return false;
    }

    public static Date formatHhMmSsOfDate(Date date) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(date);
        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();
    }


    public static Date addDate(Date date, int year, int month, int day, int hour, int minute, int second, int millisecond) {
        Calendar c = Calendar.getInstance();
        c.setTime(date);
        c.add(Calendar.YEAR, year);//加减年数
        c.add(Calendar.MONTH, month);//加减月数
        c.add(Calendar.DATE, day);//加减天数
        c.add(Calendar.HOUR, hour);//加减小时数
        c.add(Calendar.MINUTE, minute);//加减分钟数
        c.add(Calendar.SECOND, second);//加减秒
        c.add(Calendar.MILLISECOND, millisecond);//加减毫秒数

        return c.getTime();
    }

    public static Long getDistanceTimestamp(Date startDate, Date endDate) {
        long daysBetween = (endDate.getTime() - startDate.getTime() + 1000000) / (3600 * 24 * 1000);
        return daysBetween;
    }

    public static Boolean compareIsSameMonth(Date date1, Date date2) {
        boolean flag = false;
        int year1 = getYear(date1);
        int year2 = getYear(date2);
        if (year1 == year2) {
            int month1 = getMonth(date1);
            int month2 = getMonth(date2);
            if (month1 == month2) flag = true;
        }
        return flag;
    }

    public static long[] getDistanceTime(Date one, Date two) {
        long day = 0;
        long hour = 0;
        long min = 0;
        long sec = 0;
        try {

            long time1 = one.getTime();
            long time2 = two.getTime();
            long diff;
            if (time1 < time2) {
                diff = time2 - time1;
            } else {
                diff = time1 - time2;
            }
            day = diff / (24 * 60 * 60 * 1000);
            hour = (diff / (60 * 60 * 1000) - day * 24);
            min = ((diff / (60 * 1000)) - day * 24 * 60 - hour * 60);
            sec = (diff / 1000 - day * 24 * 60 * 60 - hour * 60 * 60 - min * 60);
        } catch (Exception e) {
            e.printStackTrace();
        }
        long[] times = {day, hour, min, sec};
        return times;
    }

    public static long[] getDistanceTime(String str1, String str2) {
        DateFormat df = new SimpleDateFormat(DATE_TIME_FORMAT_YYYY_MM_DD_HH_MI_SS);
        Date one;
        Date two;
        long day = 0;
        long hour = 0;
        long min = 0;
        long sec = 0;
        try {
            one = df.parse(str1);
            two = df.parse(str2);
            long time1 = one.getTime();
            long time2 = two.getTime();
            long diff;
            if (time1 < time2) {
                diff = time2 - time1;
            } else {
                diff = time1 - time2;
            }
            day = diff / (24 * 60 * 60 * 1000);
            hour = (diff / (60 * 60 * 1000) - day * 24);
            min = ((diff / (60 * 1000)) - day * 24 * 60 - hour * 60);
            sec = (diff / 1000 - day * 24 * 60 * 60 - hour * 60 * 60 - min * 60);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        long[] times = {day, hour, min, sec};
        return times;
    }


    public static Long getDistanceDays(String str1, String str2) throws Exception {
        DateFormat df = new SimpleDateFormat(DATE_TIME_FORMAT_YYYY_MM_DD_HH_MI_SS);
        Date one;
        Date two;
        long days = 0;
        try {
            one = df.parse(str1);
            two = df.parse(str2);
            long time1 = one.getTime();
            long time2 = two.getTime();
            long diff;
            if (time1 < time2) {
                diff = time2 - time1;
            } else {
                diff = time1 - time2;
            }
            days = diff / (1000 * 60 * 60 * 24);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return days;
    }


    public static Date getDayBeginTime(final Date date) {
        Calendar c = Calendar.getInstance();
        c.setTime(date);
        c.set(Calendar.HOUR_OF_DAY, 0);
        c.set(Calendar.MINUTE, 0);
        c.set(Calendar.SECOND, 0);
        c.set(Calendar.MILLISECOND, 0);
        return c.getTime();
    }

    public static Date getDayEndTime(final Date date) {
        Calendar c = Calendar.getInstance();
        c.setTime(date);
        c.set(Calendar.HOUR_OF_DAY, 23);
        c.set(Calendar.MINUTE, 59);
        c.set(Calendar.SECOND, 59);
        c.set(Calendar.MILLISECOND, 999);
        return c.getTime();
    }


}