package com.ectrip.cyt.utils;

import java.sql.Time;
import java.sql.Timestamp;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;

/**
 * 实现描述：时间操作工具类
 *
 * @author zixin.zhang
 * @version v1.0.0
 * @see
 * @since 13-8-12上午10:37
 */
public class DateUtils {
	public final static String DATE_CHINESE_PATTERN = "yyyy-MM-dd";
	/**
	 * 标准日期格式
	 */
	public final static String DATE_PATTERN = "yyyy-MM-dd";

	public final static String DATE_SHORT_PATTERN = "yyyyMMdd";

	public final static String DATE_SLASH_PATTERN = "yyyy/MM/dd";

	/**
	 * 标准日期时分秒毫秒格式
	 */
	public final static String DATETIME_MILL_SECOND = "yyyy-MM-dd HH:mm:ss.SSS";

	/**
	 * 标准时间格式
	 */
	public final static String DATETIME_PATTERN = "yyyy-MM-dd HH:mm:ss";

	/**
	 * 特殊的格式 针对创建订单，拼凑的最晚支付时间
	 */
	public final static String DATETIME_PATTERN_CREAT_ORDER = "yyyy-MM-dd HH:mm";

	public final static String DATETIME_SHORT_PATTERN = "yyyyMMddHHmmss";

	/**
	 * 标准年小时分钟格式
	 */
	public final static String HOUR_MINUTE = "HH:mm";

	/**
	 * 标准年小时分钟秒格式
	 */
	public final static String HOUR_MINUTE_SECOND = "HH:mm:ss";

	/**
	 * Number of milliseconds in a standard day.
	 */
	public static final long MILLIS_PER_DAY = 24 * DateUtils.MILLIS_PER_HOUR;

	/**
	 * Number of milliseconds in a standard hour.
	 */
	public static final long MILLIS_PER_HOUR = 60 * DateUtils.MILLIS_PER_MINUTE;

	/**
	 * Number of milliseconds in a standard minute.
	 */
	public static final long MILLIS_PER_MINUTE = 60 * DateUtils.MILLIS_PER_SECOND;

	/**
	 * Number of milliseconds in a standard second.
	 */
	public static final long MILLIS_PER_SECOND = 1000;

	/**
	 * 标准年月格式
	 */
	public final static String MONTH_PATTERN = "yyyy-MM";

	private final static String[] WEEK_NAMES = { "星期一", "星期二", "星期三", "星期四",
			"星期五", "星期六", "星期天" };

	/**
	 * 在指定日期增加：天数
	 *
	 * @param date
	 *            指定日期
	 * @param days
	 *            指定天数
	 * @return
	 */
	public static Date addDay(Date date, int days) {
		if (days == 0) {
			return date;
		}
		Calendar c = Calendar.getInstance();
		c.setTime(date);
		c.add(Calendar.DAY_OF_YEAR, days);
		return c.getTime();
	}

	/**
	 * 获取当前时间 格式： String
	 */
	public static String getTodayStr() {
		String nowString = "";
		String monthString = "";
		String dayString = "";
		String hourString = "";
		String minString = "";
		String secString = "";

		Calendar now = Calendar.getInstance(TimeZone.getTimeZone("GMT+08:00"));
		nowString = nowString + now.get(1) + "-";
		Integer month = now.get(2) + 1;
		if (month < 10) {
			monthString = "0" + month;
		} else {
			monthString = month.toString();
		}

		Integer day = now.get(5);
		if (day < 10) {
			dayString = "0" + day;
		} else {
			dayString = day.toString();
		}

		nowString = nowString + monthString + "-" + dayString;

		Integer hour = now.get(11);
		if (hour < 10) {
			hourString = "0" + hour;
		} else {
			hourString = hour.toString();
		}

		nowString = nowString + " " + hourString;
		Integer min = now.get(12);
		if (min < 10) {
			minString = "0" + min;
		} else {
			minString = min.toString();
		}

		nowString = nowString + ":" + minString;
		Integer sec = now.get(13);
		if (sec < 10) {
			secString = "0" + sec;
		} else {
			secString = sec.toString();
		}

		nowString = nowString + ":" + secString;
		return nowString;
	}

	/**
	 * 获取当前时间 格式： Date
	 */
	public static Date getTodayDate() {
		return convertDate(getTodayStr(), DATETIME_PATTERN);
	}

	/**
	 * 获取当前时间 : 根据规范格式
	 */
	public static Date getTodayDate(String pattern) {
		return convertDate(getTodayStr(), pattern);
	}

	/**
	 * 获取当前: 时分秒
	 */
	public static String getTodayTime() {
		return getTodayStr().substring(11);
	}

	/**
	 * 在指定日期增加：小时
	 *
	 * @param date
	 *            指定日期
	 * @param days
	 *            指定天数
	 * @return
	 */
	public static Date addHour(Date date, int hour) {
		if (hour == 0) {
			return date;
		}
		Calendar c = Calendar.getInstance();
		c.setTime(date);
		c.add(Calendar.HOUR, hour);
		return c.getTime();
	}

	/**
	 * 在指定日期增加指定天数
	 *
	 * @param date
	 *            指定日期
	 * @param days
	 *            指定天数
	 * @return
	 */
	public static Date addDay(String date, int days) {
		return DateUtils.addDay(DateUtils.convertDate(date), days);
	}

	public static Date addMinute(Date date, int minute) {
		Calendar c = Calendar.getInstance();
		c.setTime(date);
		c.add(Calendar.MINUTE, minute);
		return c.getTime();
	}

	/**
	 * 当前日期之后
	 *
	 * @param date
	 * @return
	 */
	public static boolean afterToday(Object date) {
		Date currentDate = getTodayDate();
		return DateUtils.compareDate(date, currentDate) == 1;
	}

	/**
	 * 当前时间之后
	 *
	 * @param date
	 * @return
	 */
	public static boolean afterTodayDate(Date date) {
		Date currentDate = getTodayDate();
		return currentDate.compareTo(date) == -1;
	}

	/**
	 * 当前日期之前
	 *
	 * @param date
	 * @return
	 */
	public static boolean beforeToday(Object date) {
		Date currentDate = getTodayDate();
		return DateUtils.compareDate(date, currentDate) == -1;
	}

	/**
	 * 当前时间之前
	 *
	 * @param date
	 * @return
	 */
	public static boolean beforeTodayDate(Date date) {
		Date currentDate = getTodayDate();
		return currentDate.compareTo(date) == 1;
	}

	/**
	 * 比较两个日期date1大于date2 返回1 等于返回0 小于返回-1
	 *
	 * @param date1
	 * @param date2
	 * @return
	 */
	public static int compareDate(Object date1, Object date2) {
		if (date1 == null || date2 == null) {
			String msg = "illegal arguments,date1 and date2 must be not null.";
			throw new IllegalArgumentException(msg);
		}
		Date d1 = (Date) (date1 instanceof String ? DateUtils
				.convertDate((String) date1) : date1);
		Date d2 = (Date) (date2 instanceof String ? DateUtils
				.convertDate((String) date2) : date2);
		try {
			return d1.compareTo(d2);
		} catch (Exception e) {
			e.printStackTrace();
			return -1;
		}
	}

	public static Date convertDate(Date date, String pattern) {
		if (pattern==null) {
			String msg = "the date or pattern is empty.";
			throw new IllegalArgumentException(msg);
		}
		String dateForPattern = DateUtils.formatDate(date, pattern);
		return DateUtils.convertDate(dateForPattern, pattern);
	}

	/**
	 * 将long型整数转化为时间。
	 *
	 * @param date
	 *            时间对应的long值
	 * @return 时间对象
	 */
	public static Date convertDate(Long date) {
		return new Date(date);
	}

	/**
	 * 将日期或者时间戳转化为日期对象
	 *
	 * @param date
	 *            yyyy-MM-dd or yyyy-MM-dd HH:mm:ss or yyyy-MM-dd HH:mm:ss.SSS
	 * @return
	 */
	public static Date convertDate(String date) {
		if (date.indexOf(":") > 0) {
			return DateUtils.convertDate(date, DateUtils.DATETIME_PATTERN);
		} else if (date.indexOf(".") > 0) {
			return DateUtils.convertDate(date, DateUtils.DATETIME_MILL_SECOND);
		} else {
			return DateUtils.convertDate(date, DateUtils.DATE_PATTERN);
		}
	}

	/**
	 * 将日期或者时间字符串转化为日期对象
	 *
	 * @param date
	 *            日期字符串
	 * @param pattern
	 *            格式字符串</br> yyyy-MM-DD, yyyy/MM/DD, yyyyMMdd</br>
	 *            yyyy-MM-dd-HH:mm:ss, yyyy-MM-dd HH:mm:ss
	 *            格式字符串可选字符："GyMdkHmsSEDFwWahKzZ"
	 * @return Date
	 * @see java.text.DateFormatSymbols.patternChars</br>
	 */
	public static Date convertDate(String date, String pattern) {
		try {
			if (pattern==null) {
				String msg = "the date or pattern is empty.";
				throw new IllegalArgumentException(msg);
			}
			SimpleDateFormat df = new SimpleDateFormat(pattern.trim());
			return df.parse(date.trim());
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}

	/**
	 * 将时间字符串转化为时间对象Time
	 *
	 * @param time
	 *            时间字符串
	 * @param pattern
	 *            格式字符串 yyyy-MM-dd HH:mm:ss or yyyy-MM-dd HH:mm:ss.SSS
	 * @return
	 */
	public static Time convertTime(String time, String pattern) {
		Date d = DateUtils.convertDate(time, pattern);
		return new Time(d.getTime());
	}

	/**
	 * 获得日期相差天数
	 *
	 * @param date1
	 *            日期
	 * @param date2
	 *            日期
	 * @return
	 */
	public static int diffDate(Date date1, Date date2) {
		return (int) ((date1.getTime() - date2.getTime()) / DateUtils.MILLIS_PER_DAY);
	}

	/**
	 * 获取两个日期相差的分钟数
	 *
	 * @param date1
	 * @param date2
	 * @return
	 */
	public static int diffMinute(Date date1, Date date2) {
		return (int) ((date1.getTime() - date2.getTime()) / DateUtils.MILLIS_PER_MINUTE);
	}

	/**
	 * 格式为时间字符串
	 *
	 * @param date
	 *            日期
	 * @return yyyy-MM-dd Date
	 */
	public static String formatDate(Date date) {
		try {
			return DateUtils.formatDate(date, DateUtils.DATE_PATTERN);
		} catch (Exception e) {
			return null;
		}
	}

	/**
	 * 按指定格式字符串格式时间
	 *
	 * @param date
	 *            日期或者时间
	 * @param pattern
	 *            格式化字符串 yyyy-MM-dd， yyyy-MM-dd HH:mm:ss, yyyy年MM月dd日 etc.</br>
	 * @return
	 */
	public static String formatDate(Date date, String pattern) {
		SimpleDateFormat format = new SimpleDateFormat(pattern.trim());
		return format.format(date);
	}

	/**
	 * 格式为时间戳字符串
	 *
	 * @param date
	 *            时间
	 * @return yyyy-MM-dd HH:mm:ss Date
	 */
	public static String formatDateTime(Date date) {
		try {
			return DateUtils.formatDate(date, DateUtils.DATETIME_PATTERN);
		} catch (Exception e) {
			return null;
		}
	}

	/**
	 * 将制定时间格式为字符串'yyyyMMddHHmmss'.
	 *
	 * @return
	 */
	public static String formatDateToYMDHMS(Date date) {
		return DateUtils.formatDate(date, DateUtils.DATETIME_SHORT_PATTERN);
	}

	public static String formatMonth(Date date) {
		return DateUtils.formatDate(date, DateUtils.MONTH_PATTERN);
	}

	/**
	 * 将当前时间格式为字符串'yyyyMMddHHmmss'.
	 *
	 * @return
	 */
	public static String formatNowToYMDHMS() {
		return DateUtils.formatDateToYMDHMS(getTodayDate());
	}

	public static Timestamp getCurrentTimestamp() {
		return new Timestamp(getTodayDate().getTime());
	}

	public static Date getDateFromShortString(String str) {
		SimpleDateFormat simpleDF = new SimpleDateFormat("yyyy-MM-dd");
		try {
			return simpleDF.parse(str);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		return null;
	}

	/**
	 * 获得本周第一天
	 *
	 * @param date
	 * @return
	 */
	public static Date getFirstDayOfThisWeek(Date date) {
		Calendar cal = Calendar.getInstance();
		cal.setTime(date);
		cal.setFirstDayOfWeek(Calendar.MONDAY);
		cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
		return cal.getTime();
	}

	/**
	 * 获得小时
	 *
	 * @param date
	 * @return
	 */
	public static int getHourOfDay(Date date) {
		Calendar c = Calendar.getInstance();
		c.setTime(date);
		return c.get(Calendar.HOUR_OF_DAY);
	}

	public static Date getLastMonth() {
		Calendar c = Calendar.getInstance();
		int month = c.get(Calendar.MONTH);
		c.set(Calendar.MONTH, month - 1);
		return c.getTime();
	}

	/**
	 * 获得分钟数
	 *
	 * @param date
	 * @return
	 */
	public static int getMinute(Date date) {
		Calendar c = Calendar.getInstance();
		c.setTime(date);
		return c.get(Calendar.MINUTE);
	}

	/**
	 * 获取后续第n天日期
	 *
	 * @param date
	 * @param n
	 *            第n天
	 * @return
	 */
	public static Date getNextNDay(Date date, int n) {
		Calendar cal = Calendar.getInstance();
		cal.setTime(date);
		cal.add(Calendar.DATE, n);
		return cal.getTime();
	}

	/**
	 * 获得星期数
	 *
	 * @param date
	 *            日期
	 * @return
	 */
	public static int getWeekNumber(Date date) {
		Calendar c = Calendar.getInstance();
		c.setTime(date);
		int number = c.get(Calendar.DAY_OF_WEEK) - 1;
		if (number == 0) {
			number = 7;
		}
		return number;
	}

	/**
	 * 获得星期名称
	 *
	 * @param date
	 * @return
	 */
	public static String getWeekNumberString(Date date) {
		int dayNum = DateUtils.getWeekNumber(date);
		return DateUtils.WEEK_NAMES[dayNum - 1];
	}

	/**
	 * 是否同一天
	 *
	 * @param date1
	 * @param date2
	 * @return
	 */
	public static boolean isSameDay(Object date1, Object date2) {
		return DateUtils.compareDate(date1, date2) == 0;
	}

	/**
	 * 检查时间或者字符串是否合法
	 *
	 * @param date
	 *            时间
	 * @param pattern
	 *            格式串
	 * @return
	 */
	public static boolean isValidDate(String date, String pattern) {
		try {
			DateUtils.convertDate(pattern, date);
			return true;
		} catch (Exception e) {
			e.printStackTrace();
			return false;
		}
	}

	/**
	 * 获得当前时间戳
	 *
	 * @return Timestamp
	 */
	public static Timestamp now() {
		return new Timestamp(getTodayDate().getTime());
	}

	/**
	 * 获得当前时间字符串,格式为：yyyy-MM-dd HH:mm:ss
	 *
	 * @return
	 */
	public static String nowDateTime() {
		return DateUtils.formatDate(getTodayDate(), DateUtils.DATETIME_PATTERN);
	}

	/**
	 * 按指定roundType格式化日期。
	 *
	 * @param date
	 *            日期
	 * @param roundType
	 * @return Date
	 * @see Calendar.MONTH
	 *      ,Calendar.DATE,Calendar.HOUR,Calendar.MINUTE,Calendar.SECOND
	 */
	public static Date round(Date date, int roundType) {
		Calendar c = Calendar.getInstance();
		c.setTimeInMillis(date.getTime());
		switch (roundType) {
			case Calendar.MONTH:
				c.set(Calendar.DAY_OF_MONTH, 1);
			case Calendar.DATE:
				c.set(Calendar.HOUR_OF_DAY, 0);
			case Calendar.HOUR:
				c.set(Calendar.MINUTE, 0);
			case Calendar.MINUTE:
				c.set(Calendar.SECOND, 0);
			case Calendar.SECOND:
				c.set(Calendar.MILLISECOND, 0);
				return c.getTime();
			default:
				throw new IllegalArgumentException("invalid round roundType.");
		}
	}

	/**
	 * 获得当前日期对象
	 *
	 * @return
	 */
	public static Date today() {
		return DateUtils.convertDate(DateUtils.formatDate(getTodayDate()),
				DateUtils.DATE_PATTERN);
	}

	/**
	 * 获得当前日期字符串,格式为：yyyy-MM-dd
	 *
	 * @return
	 */
	public static String todayDate() {
		return DateUtils.formatDate(getTodayDate());
	}

	/**
	 *
	 * 将日期或者时间字符串转化为Timestamp对象
	 *
	 * @param date
	 *            日期字符串
	 * @param pattern
	 *            格式字符串</br> yyyy-MM-DD, yyyy/MM/DD, yyyyMMdd</br>
	 *            yyyy-MM-dd-HH:mm:ss, yyyy-MM-dd HH:mm:ss
	 * @return Timestamp
	 * @author reeboo
	 */
	public static Timestamp toTimestamp(String date, String pattern) {
		SimpleDateFormat format = new SimpleDateFormat(pattern.trim());
		try {
			return new Timestamp(format.parse(date).getTime());
		} catch (ParseException e) {
		}
		return null;
	}

	/**
	 * 获得当天日期 Describe:
	 *
	 * @author:hezhihong
	 * @return return:String 日期 yyyy-MM-dd Date:2014-5-26
	 */
	public static String getDays() {
		return getTodayStr().substring(0, 10);
	}

	/**
	 * 获取当前的时间 yyyy-MM-dd
	 * @return
	 */
	public static String getCurrentDate() {
		SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd", Locale.CHINA);
		Date date = new Date(System.currentTimeMillis());
		return format.format(date);
	}
}