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/*
 * Copyright 2017 ~ 2025 the original author or authors. 
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.wl4g.component.common.lang;

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

import static com.wl4g.component.common.lang.Assert2.notNull;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * Date enhanced utility.
 * 
 * @author wangl.sir
 * @version v1.0 2019年4月25日
 * @since
 */
public abstract class DateUtils2 extends DateUtils {

	final public 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" };
	final public static String UTC = "yyyy-MM-dd'T'HH:mm:ss.SSSXXX";
	final public static String YMD_HMS = "yyyy-MM-dd HH:mm:ss";
	final public static String YMD = "yyyy-MM-dd";
	final public static String YMDHM = "yyyyMMddHHmm";

	public static List getDates(String startDate, String endDate) throws Exception {
		Date d1 = new SimpleDateFormat(YMD).parse(startDate);// 定义起始日期
		Date d2 = new SimpleDateFormat(YMD).parse(endDate);// 定义结束日期
		Calendar dd = Calendar.getInstance();// 定义日期实例
		dd.setTime(d1);// 设置日期起始时间
		ArrayList dates = new ArrayList();
		while (dd.getTime().getTime() <= d2.getTime()) {// 判断是否到结束日期
			SimpleDateFormat sdf = new SimpleDateFormat(YMD);
			String str = sdf.format(dd.getTime());
			dates.add(str);
			dd.add(Calendar.DAY_OF_MONTH, 1);// 进行当前日期月份加1
		}
		return dates;
	}

	/**
	 * Convert timestamp to UTC
	 * 
	 * @param timestamp
	 * @return
	 */
	public static String timeToUTC(long timestamp) {
		SimpleDateFormat df2 = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
		df2.setTimeZone(TimeZone.getTimeZone("UTC"));
		String re = df2.format(new Date(timestamp));
		return re;
	}

	/**
	 * Convert date string to UTC
	 * 
	 * @param date
	 * @return
	 */
	public static String dateToUTC(String date) {
		SimpleDateFormat sdf1 = new SimpleDateFormat(UTC);
		SimpleDateFormat sdf2 = new SimpleDateFormat(YMD_HMS);
		String str = null;
		try {
			str = sdf1.format(sdf2.parse(date));
		} catch (Exception e) {
			throw new IllegalStateException(e);
		}
		return str;
	}

	public static String getNowTime() {
		SimpleDateFormat sf = new SimpleDateFormat(YMD_HMS);
		return sf.format(new Date());
	}

	public static String getNowTime(String format) {
		SimpleDateFormat sf = new SimpleDateFormat(format);
		return sf.format(new Date());
	}

	public static String ymdhmsToymd(String date) {
		return date.substring(0, 10);
	}

	/**
	 * Seconds before getting the current time
	 * 
	 * @param beforeSec
	 *            A few seconds ago
	 * @return
	 */
	public static String getCurrentBeforeTimeBySec(int beforeSec) {
		SimpleDateFormat sdf = new SimpleDateFormat(YMD_HMS);
		Calendar beforeTime = Calendar.getInstance();
		beforeTime.add(Calendar.SECOND, beforeSec);// 几秒钟之前的时间
		Date beforeD = beforeTime.getTime();
		String time = sdf.format(beforeD);
		return time;
	}

	/**
	 * Minutes before getting the current time
	 * 
	 * @param beforeMin
	 *            A few minutes ago
	 * @return
	 */
	public static String getCurrentBeforeTimeByMin(int beforeMin) {
		SimpleDateFormat sdf = new SimpleDateFormat(YMD_HMS);
		Calendar beforeTime = Calendar.getInstance();
		beforeTime.add(Calendar.MINUTE, beforeMin);// 几分钟之前的时间
		Date beforeD = beforeTime.getTime();
		String time = sdf.format(beforeD);
		return time;
	}

	/**
	 * Hours before getting the current time
	 * 
	 * @param beforeHour
	 *            A few hours ago
	 * @return
	 */
	public static String getCurrentBeforeTimeByHour(int beforeHour) {
		SimpleDateFormat sdf = new SimpleDateFormat(YMD_HMS);
		Calendar beforeTime = Calendar.getInstance();
		beforeTime.add(Calendar.HOUR, beforeHour);
		Date beforeD = beforeTime.getTime();
		String time = sdf.format(beforeD);
		return time;
	}

	/**
	 * 得到当前日期字符串 格式（yyyy-MM-dd）
	 */
	public static String getDate() {
		return getDate("yyyy-MM-dd");
	}

	/**
	 * 得到当前日期字符串 格式（yyyy-MM-dd） pattern可以为："yyyy-MM-dd" "HH:mm:ss" "E"
	 */
	public static String getDate(String pattern) {
		return DateFormatUtils.format(new Date(), pattern);
	}

	/**
	 * 得到日期字符串 默认格式（yyyy-MM-dd） pattern可以为："yyyy-MM-dd" "HH:mm:ss" "E"
	 */
	public static String formatDate(Date date, Object... pattern) {
		notNull(date, "null Date");
		if (pattern != null && pattern.length > 0) {
			return DateFormatUtils.format(date, pattern[0].toString());
		}
		return DateFormatUtils.format(date, "yyyy-MM-dd");
	}

	/**
	 * 得到日期时间字符串，转换格式（yyyy-MM-dd HH:mm:ss）
	 */
	public static String formatDateTime(Date date) {
		return formatDate(date, "yyyy-MM-dd HH:mm:ss");
	}

	/**
	 * 得到当前时间字符串 格式（HH:mm:ss）
	 */
	public static String getTime() {
		return formatDate(new Date(), "HH:mm:ss");
	}

	/**
	 * 得到当前日期和时间字符串 格式（yyyy-MM-dd HH:mm:ss）
	 */
	public static String getDateTime() {
		return formatDate(new Date(), "yyyy-MM-dd HH:mm:ss");
	}

	/**
	 * 得到当前年份字符串 格式（yyyy）
	 */
	public static String getYear() {
		return formatDate(new Date(), "yyyy");
	}

	/**
	 * 得到当前月份字符串 格式（MM）
	 */
	public static String getMonth() {
		return formatDate(new Date(), "MM");
	}

	/**
	 * 得到当天字符串 格式（dd）
	 */
	public static String getDay() {
		return formatDate(new Date(), "dd");
	}

	/**
	 * 得到当前星期字符串 格式（E）星期几
	 */
	public static String getWeek() {
		return formatDate(new Date(), "E");
	}

	/**
	 * 日期型字符串转化为日期 格式 { "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm",
	 * "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy.MM.dd",
	 * "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm" }
	 */
	public static Date parseDate(Object str) {
		if (str == null || str.toString().trim().length() <= 0) {
			return null;
		}
		try {
			return parseDate(str.toString(), parsePatterns);
		} catch (ParseException e) {
			return null;
		}
	}

	/**
	 * 获取过去的天数
	 * 
	 * @param date
	 * @return
	 */
	public static long pastDays(Date date) {
		long t = new Date().getTime() - date.getTime();
		return t / (24 * 60 * 60 * 1000);
	}

	/**
	 * 获取过去的小时
	 * 
	 * @param date
	 * @return
	 */
	public static long pastHour(Date date) {
		long t = new Date().getTime() - date.getTime();
		return t / (60 * 60 * 1000);
	}

	/**
	 * 获取过去的分钟
	 * 
	 * @param date
	 * @return
	 */
	public static long pastMinutes(Date date) {
		long t = new Date().getTime() - date.getTime();
		return t / (60 * 1000);
	}

	/**
	 * 转换为时间（天,时:分:秒.毫秒）
	 * 
	 * @param timeMillis
	 * @return
	 */
	public static String formatDateTime(long timeMillis) {
		long day = timeMillis / (24 * 60 * 60 * 1000);
		long hour = (timeMillis / (60 * 60 * 1000) - day * 24);
		long min = ((timeMillis / (60 * 1000)) - day * 24 * 60 - hour * 60);
		long s = (timeMillis / 1000 - day * 24 * 60 * 60 - hour * 60 * 60 - min * 60);
		long sss = (timeMillis - day * 24 * 60 * 60 * 1000 - hour * 60 * 60 * 1000 - min * 60 * 1000 - s * 1000);
		return (day > 0 ? day + "," : "") + hour + ":" + min + ":" + s + "." + sss;
	}

	/**
	 * 获取两个日期之间的天数
	 * 
	 * @param before
	 * @param after
	 * @return
	 */
	public static double getDistanceOfTwoDate(Date before, Date after) {
		long beforeTime = before.getTime();
		long afterTime = after.getTime();
		return (afterTime - beforeTime) / (1000 * 60 * 60 * 24);
	}

}