package lyj.next.second;

import java.io.Serializable;
import java.util.Calendar;

public class NextSecond {
	private static final int BIGMONTH = 0X00001F;
	private static final int SMALLMONTH = 0X00001E;
	private static final int BIGFEBRUAY = 0X00001D;
	private static final int SMALLFEBRUAY = 0X00001C;

	/**
	 * 获取指定日期的下一秒
	 * 
	 * @param date
	 * @return
	 * @throws Exception
	 */
	public static String nextSeconds(Date date) throws Exception {
		if (!Date.checkUseFul(date)) {
			throw new Exception("日期不合法");

		}

		return Date.nextDateInOneSecond(date);
	}

	// 主程序入口
	public static void main(String[] args) throws Exception {
		Date dt = new Date(2012, 10, 31, 23, 59, 59);
		System.out.println(nextSeconds(dt));
	}

	// 日期内

	static class Date implements Serializable {

		private static final long serialVersionUID = -8876583691388432561L;
		int year, month, day, hour, minute, second;
		private static boolean needAddMinute = Boolean.FALSE;// 是否需要累加月
		private static boolean needAddHour = Boolean.FALSE;// 是否需要累加小时
		private static boolean needAddDay = Boolean.FALSE;// 是否需要累加天数
		private static boolean needAddMonth = Boolean.FALSE;// 是否需要累加月数
		private static boolean needAddYear = Boolean.FALSE;// 是否需要累加年份

		private Date(int year, int month, int day, int hour, int minute,
				int second) {
			this.year = year;
			this.month = month;
			this.day = day;
			this.hour = hour;
			this.minute = minute;
			this.second = second;
		}

		private Date(Calendar cand) {

			this.year = cand.get(Calendar.YEAR);
			this.month = cand.get(Calendar.MONTH);
			this.day = cand.get(Calendar.DATE);
			this.hour = cand.get(Calendar.HOUR);
			this.minute = cand.get(Calendar.MINUTE);
			this.second = cand.get(Calendar.SECOND);
		}

		private int getMonth() {
			return month;
		}

		private int getYear() {
			return year;
		}

		private int getDay() {
			return day;
		}

		private int getHour() {
			return hour;
		}

		private int getMinute() {
			return minute;
		}

		private int getSecond() {
			return second;
		}

		private void setYear(int year) {
			this.year = year;
		}

		private void setMonth(int month) {
			this.month = month;
		}

		private void setDay(int day) {
			this.day = day;
		}

		private void setHour(int hour) {
			this.hour = hour;
		}

		private void setMinute(int minute) {
			this.minute = minute;
		}

		private void setSecond(int second) {
			this.second = second;
		}

		/**
		 * 检测日期是否为有效日期 默认有效返回yes无效返回no
		 * 
		 * @param date
		 * @return
		 */
		private static boolean checkUseFul(Date date) {
			boolean[] useful = new boolean[6];
			useful[0] = date.year >= 1;// 年份必须从整数1开始
			useful[1] = date.month >= 1 && date.month <= 12;// 月份控制在1到12月之间
			useful[2] = date.day >= 1 && date.day <= days(date);// 天数必须＜=这个月的最大日期
			useful[3] = date.hour >= 1 && date.hour <= 23;// 小时为24小时制
			useful[4] = date.minute >= 1 && date.minute <= 59;
			useful[5] = date.second >= 0 && date.second <= 59;
			for (boolean b : useful) {
				if (!b)
					return false;
			}
			return true;
		}

		/**
		 * 判断指定日期的年份是否属于润年
		 * 
		 * @param date
		 * @return
		 */
		private static boolean isLeapYear(final Date date) {
			final int year = date.getMonth();
			return ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0));

		}

		/**
		 * 
		 * @param date
		 * @return 指定日期的这个月有多少天
		 */
		private static int days(final Date date) {
			int daycount;
			final int month = date.getMonth();
			switch (month) {
			case 1:
			case 3:
			case 5:
			case 7:
			case 8:
			case 10:
			case 12:
				return BIGMONTH;
			case 2:
				daycount = (isLeapYear(date)) ? BIGFEBRUAY : SMALLFEBRUAY;
				return daycount;

			default:
				return SMALLMONTH;

			}
		}

		/**
		 * 判断当前秒是否大于59如果是则分要加1
		 * 
		 * @return
		 */
		private static void nextSecond(final Date date) {
			int second = date.getSecond();
			date.setSecond((second == 59) ? 00 : second + 1);
			needAddMinute = (second == 59);
		}

		/**
		 * 判断当前分是否为59如果是则小时要加1
		 * 
		 * @return
		 */
		private static void nextMinute(final Date date) {
			int minute = date.getMinute();
			minute = needAddMinute ? minute + 1 : minute;
			date.setMinute(minute == 60 ? 00 : minute);
			needAddHour = (minute == 60);

		}

		/**
		 * 判断当前小时是否到了24如果是则天数要加1
		 * 
		 * @return
		 */
		private static void nextHour(final Date date) {
			int hour = date.getHour();
			hour = needAddHour ? hour + 1 : hour;
			date.setHour(hour == 24 ? 00 : hour);
			needAddDay = (hour == 24);
		}

		/**
		 * 判断当前天数是否到了当月的最后一天如果是则月数要加1
		 * 
		 * @return
		 */
		private static void nextDays(final Date date) {
			final int daycount = days(date);
			int day = date.getDay();
			day = needAddDay ? day + 1 : day;
			date.setDay(day == daycount + 1 ? 1 : day);
			needAddMonth = (day == daycount + 1);
		}

		/**
		 * 判断当前月份是否到了12月如果是则年份要加1
		 * 
		 * @return
		 */
		private static void nextMonth(final Date date) {
			int month = date.getMonth();
			month = needAddMonth ? month + 1 : month;
			date.setMonth(month == 13 ? 1 : month);
			needAddYear = (month == 13);
		}

		private static void nextYear(final Date date) {
			int year = date.getYear();
			year = needAddYear ? year + 1 : year;
			date.setYear(year);

		}

		static String toString(final Date date) {
			String string = date.getYear() + "年" + date.getMonth() + "月"
					+ date.getDay();
			string += "日 " + date.getHour() + "时" + date.getMinute() + "分"
					+ date.getSecond() + "秒";
			return string;
		}

		static String nextDateInOneSecond(final Date date) {
			String currDate = "当前日期为:" + toString(date) + "\n";
			nextSecond(date);
			nextMinute(date);
			nextHour(date);
			nextDays(date);
			nextMonth(date);
			nextYear(date);
			return currDate + "下一秒为:" + toString(date);

		}

	}

}