package com.yssh.utils;

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

import org.apache.commons.lang3.time.DateFormatUtils;

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 YYYYMM = "yyyyMM";

	public static String YYYYMMDD = "yyyyMMdd";

	public static String YYYYMMDDHH = "yyyyMMddHH";

	public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

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

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

	public static String YYYY_MM_DD_HH = "yyyy-MM-dd HH";

	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"};

	public static Date getNowDate() {
		return new Date();
	}

	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);
		}
	}

	public static String getYyyyMm(Date date) {
		return new SimpleDateFormat(YYYYMM).format(date);
	}

	public static String getYyyyMmDd(Date date) {
		return new SimpleDateFormat(YYYYMMDD).format(date);
	}

	public static String getYyyyMmDdHh(Date date) {
		return new SimpleDateFormat(YYYYMMDDHH).format(date);
	}

	public static String getYyyyMmDdHhMmSs(Date date) {
		return new SimpleDateFormat(YYYY_MM_DD_HH_MM_SS).format(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";
	}

	/**
	 * @throws
	 * @Title: differHour
	 * @Description: 获取两个时间差几个小时
	 * @param: @param endDate
	 * @param: @param nowDate
	 * @param: @return
	 * @return: long
	 */
	public static int differDay(Date startDate, Date endDate) {
		long nd = 1000 * 24 * 60 * 60;
		long diff = endDate.getTime() - startDate.getTime();
		double dd = Double.valueOf(String.valueOf(diff)) / nd;
		// 计算差多少天
		return Double.valueOf(Math.ceil(dd)).intValue();
	}

	/**
	 * @Description: 获取一段时间间隔
	 * @param:date 需要操作的时间对象
	 * @param:day 操作的时间间隔
	 * 正数为之后一段时间
	 * 负数为之前一段时间
	 * @param:dateType 操作的时间时分秒天选择
	 * 常用有：
	 * Calendar.MINUTE 分
	 * Calendar.HOUR_OF_DAY 时
	 * Calendar.DATE 天
	 * Calendar.MONTH 月
	 */
	public static Date getAPeriodOfTime(Date date, int day, int dateType) {
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(date);
		calendar.add(dateType, day);
		return calendar.getTime();
	}

	public static List<String> get3Hours() {
		List<String> times = new ArrayList<>();
		SimpleDateFormat ymdh = new SimpleDateFormat(YYYYMMDDHH);

		Calendar calendar = Calendar.getInstance();
		calendar.add(Calendar.HOUR_OF_DAY, 1);

		for (int i = 0; i < 3; i++) {
			calendar.add(Calendar.HOUR_OF_DAY, -1);
			String time = ymdh.format(calendar.getTime());
			// times.add(time);
			times.add(0, time);
		}

		return times;
	}

	public static Map<Date, Date> segmentationDateByTimeQuantum(Date startDate, Date endDate, int timeQuantum, int dateType) {
		LinkedHashMap<Date, Date> result = new LinkedHashMap<Date, Date>();
		long startTimeMillisecond = startDate.getTime();
		long endTimeMillisecond = endDate.getTime();
		Long quantumTimeMillisecond = 0L;
		switch (dateType) {
			case Calendar.DATE:
				quantumTimeMillisecond = new Integer(1000 * 60 * 60 * 24 * timeQuantum).longValue();
				break;
			case Calendar.HOUR_OF_DAY:
				quantumTimeMillisecond = new Integer(1000 * 60 * 60 * timeQuantum).longValue();
				break;
			case Calendar.MINUTE:
				quantumTimeMillisecond = new Integer(1000 * 60 * timeQuantum).longValue();
				break;
			default:
				break;
		}
		for (long time = startTimeMillisecond; time < endTimeMillisecond; time += quantumTimeMillisecond) {
			Date beginDate = new Date(time);
			Date finishDate = new Date(time + quantumTimeMillisecond);
			if (finishDate.getTime() > endTimeMillisecond) {
				finishDate = endDate;
			}
			result.put(beginDate, finishDate);
		}
		return result;
	}

	/**
	 * 剪除日期的时间部分
	 */
	public static Date trimTime(Date date) {
		Calendar cal = Calendar.getInstance();
		cal.setTime(date);

		return dateTime(YYYY_MM_DD_HH_MM_SS, parseDateToStr(YYYY_MM_DD, cal.getTime()) + " 00:00:00");
	}

	/**
	 * 去年
	 */
	public static Date lastYear(Date date) {
		Calendar cal = Calendar.getInstance();
		cal.setTime(date);
		cal.add(Calendar.YEAR, -1);

		return cal.getTime();
	}

	/**
	 * 获取一年中的第几周
	 */
	public static int getWeekOfYear(Date date) {
		Calendar cal = Calendar.getInstance();
		cal.setTime(date);

		return cal.get(Calendar.WEEK_OF_YEAR);
	}

	/**
	 * 获取一年中的第几周的星期一
	 */
	public static Date getWeekOfYearForMon(int year, int weekOfYear) {
		Calendar cal = Calendar.getInstance();
		cal.set(Calendar.YEAR, year);
		cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
		cal.set(Calendar.WEEK_OF_YEAR, weekOfYear);

		return cal.getTime();
	}

	/**
	 * 获取一年中的第几周的星期日
	 */
	public static Date getWeekOfYearForSun(int year, int weekOfYear) {
		Calendar cal = Calendar.getInstance();
		cal.set(Calendar.YEAR, year);
		cal.set(Calendar.DAY_OF_WEEK, Calendar.SUNDAY);
		cal.set(Calendar.WEEK_OF_YEAR, weekOfYear);

		return cal.getTime();
	}

	/**
	 * 获取本月第一天
	 **/
	public static Date getMonthStart(Date date) {
		Calendar cal = Calendar.getInstance();
		// cal.set(Calendar.MONTH, 3)
		cal.setTime(date);
		cal.set(Calendar.DAY_OF_MONTH, 1);
		return dateTime(YYYY_MM_DD_HH_MM_SS, parseDateToStr(YYYY_MM_DD, cal.getTime()) + " 00:00:00");
	}

	/**
	 * 获取本月最后一天
	 **/
	public static Date getMonthEnd(Date date) {
		Calendar cal = Calendar.getInstance();
		// cal.set(Calendar.MONTH, 3)
		cal.setTime(date);
		cal.set(Calendar.DAY_OF_MONTH, cal.getActualMaximum(Calendar.DAY_OF_MONTH));
		return dateTime(YYYY_MM_DD_HH_MM_SS, parseDateToStr(YYYY_MM_DD, cal.getTime()) + " 23:59:59");
	}
}