/**
 * Copyright (c) 2018 人人开源 All rights reserved.
 * <p>
 * https://www.renren.io
 * <p>
 * 版权所有，侵权必究！
 */

package com.iailab.module.model.common.utils;

import org.apache.commons.lang3.StringUtils;
import org.joda.time.DateTime;
import org.joda.time.LocalDate;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;

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

/**
 * 日期处理
 *
 * @author Mark sunlightcs@gmail.com
 */
public class DateUtils {
    /** 时间格式(yyyy-MM-dd) */
    public final static String DATE_PATTERN = "yyyy-MM-dd";
    /** 时间格式(yyyy-MM-dd HH:mm:ss) */
    public final static String DATE_TIME_PATTERN = "yyyy-MM-dd HH:mm:ss";

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

    public final static String TIME2_PATTERN = "mmss";

    public final static String DATE_PATTERN_MON = "yyyy-MM";

    public final static String DATE_PATTERN_YEAR = "yyyy";

    public final static String DATE_TIME_STRING = "yyyyMMddHHmmssSSS";

    /**
     * 日期格式化 日期格式为：yyyy-MM-dd
     * @param date  日期
     * @return 返回yyyy-MM-dd格式日期
     */
    public static String format(Date date) {
        return format(date, DATE_PATTERN);
    }

    /**
     * 日期格式化 日期格式为：yyyy-MM-dd
     * @param date  日期
     * @param pattern  格式，如：DateUtils.DATE_TIME_PATTERN
     * @return 返回yyyy-MM-dd格式日期
     */
    public static String format(Date date, String pattern) {
        if (date != null) {
            SimpleDateFormat df = new SimpleDateFormat(pattern);
            return df.format(date);
        }
        return null;
    }

    /**
     * 日期解析
     * @param date  日期
     * @param pattern  格式，如：DateUtils.DATE_TIME_PATTERN
     * @return 返回Date
     */
    public static Date parse(String date, String pattern) {
        try {
            return new SimpleDateFormat(pattern).parse(date);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * 字符串转换成日期
     * @param strDate 日期字符串
     * @param pattern 日期的格式，如：DateUtils.DATE_TIME_PATTERN
     */
    public static Date stringToDate(String strDate, String pattern) {
        if (StringUtils.isBlank(strDate)) {
            return null;
        }

        DateTimeFormatter fmt = DateTimeFormat.forPattern(pattern);
        return fmt.parseLocalDateTime(strDate).toDate();
    }

    /**
     * 根据周数，获取开始日期、结束日期
     * @param week  周期  0本周，-1上周，-2上上周，1下周，2下下周
     * @return 返回date[0]开始日期、date[1]结束日期
     */
    public static Date[] getWeekStartAndEnd(int week) {
        DateTime dateTime = new DateTime();
        LocalDate date = new LocalDate(dateTime.plusWeeks(week));

        date = date.dayOfWeek().withMinimumValue();
        Date beginDate = date.toDate();
        Date endDate = date.plusDays(6).toDate();
        return new Date[]{beginDate, endDate};
    }

    /**
     * 对日期的【秒】进行加/减
     *
     * @param date 日期
     * @param seconds 秒数，负数为减
     * @return 加/减几秒后的日期
     */
    public static Date addDateSeconds(Date date, int seconds) {
        DateTime dateTime = new DateTime(date);
        return dateTime.plusSeconds(seconds).toDate();
    }

    /**
     * 对日期的【分钟】进行加/减
     *
     * @param date 日期
     * @param minutes 分钟数，负数为减
     * @return 加/减几分钟后的日期
     */
    public static Date addDateMinutes(Date date, int minutes) {
        DateTime dateTime = new DateTime(date);
        return dateTime.plusMinutes(minutes).toDate();
    }

    /**
     * 对日期的【小时】进行加/减
     *
     * @param date 日期
     * @param hours 小时数，负数为减
     * @return 加/减几小时后的日期
     */
    public static Date addDateHours(Date date, int hours) {
        DateTime dateTime = new DateTime(date);
        return dateTime.plusHours(hours).toDate();
    }

    /**
     * 对日期的【天】进行加/减
     *
     * @param date 日期
     * @param days 天数，负数为减
     * @return 加/减几天后的日期
     */
    public static Date addDateDays(Date date, int days) {
        DateTime dateTime = new DateTime(date);
        return dateTime.plusDays(days).toDate();
    }

    /**
     * 对日期的【周】进行加/减
     *
     * @param date 日期
     * @param weeks 周数，负数为减
     * @return 加/减几周后的日期
     */
    public static Date addDateWeeks(Date date, int weeks) {
        DateTime dateTime = new DateTime(date);
        return dateTime.plusWeeks(weeks).toDate();
    }

    /**
     * 对日期的【月】进行加/减
     *
     * @param date 日期
     * @param months 月数，负数为减
     * @return 加/减几月后的日期
     */
    public static Date addDateMonths(Date date, int months) {
        DateTime dateTime = new DateTime(date);
        return dateTime.plusMonths(months).toDate();
    }

    /**
     * 对日期的【年】进行加/减
     *
     * @param date 日期
     * @param years 年数，负数为减
     * @return 加/减几年后的日期
     */
    public static Date addDateYears(Date date, int years) {
        DateTime dateTime = new DateTime(date);
        return dateTime.plusYears(years).toDate();
    }

    public static List<String> getDays(Date startDate, Date endDate) {
        List<String> days = new ArrayList<String>();
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(startDate);

        while (calendar.getTime().compareTo(endDate) < 0) {
            days.add(DateUtils.format(calendar.getTime(), "yyyy-MM-dd"));
            calendar.add(6, 1);
        }
        return days;
    }

    public static Date getTime(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        return calendar.getTime();
    }

    public static List<String> getYearTime(Date startDate, Date endDate) {
        List<String> days = new ArrayList<String>();
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(startDate);

        while (calendar.getTime().compareTo(endDate) <= 0) {
            days.add(DateUtils.format(calendar.getTime(), DATE_PATTERN_YEAR));
            calendar.add(Calendar.YEAR, 1);
        }
        return days;
    }

    public static List<String> getMonTime(Date startDate, Date endDate) {
        List<String> days = new ArrayList<String>();
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(startDate);

        while (calendar.getTime().compareTo(endDate) <= 0) {
            days.add(DateUtils.format(calendar.getTime(), DATE_PATTERN_MON));
            calendar.add(Calendar.MONTH, 1);
        }
        return days;
    }

    public static List<String> getDayTime(Date startDate, Date endDate) {
        List<String> days = new ArrayList<String>();
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(startDate);

        while (calendar.getTime().compareTo(endDate) <= 0) {
            days.add(DateUtils.format(calendar.getTime(), DATE_PATTERN));
            calendar.add(Calendar.DAY_OF_YEAR, 1);
        }
        return days;
    }

    public static List<String> getDayTime(Date startDate, Date endDate, int seconds) {
        List<String> days = new ArrayList<String>();
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(startDate);
        while (calendar.getTime().compareTo(endDate) <= 0) {
            days.add(DateUtils.format(calendar.getTime(), DATE_TIME_PATTERN));
            calendar.add(Calendar.SECOND, seconds);
        }
        return days;
    }

    public static List<String> getClassTime(Date startDate, Date endDate) {
        List<String> days = new ArrayList<String>();
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(startDate);
        while (calendar.getTime().compareTo(endDate) <= 0) {
            days.add(DateUtils.format(calendar.getTime(), DATE_PATTERN) + " 0点班");
            days.add(DateUtils.format(calendar.getTime(), DATE_PATTERN) + " 8点班");
            days.add(DateUtils.format(calendar.getTime(), DATE_PATTERN) + " 16点班");
            calendar.add(Calendar.DAY_OF_YEAR, 1);
        }
        return days;
    }


    public static Map<String, Date> getIntervalDate(int days) {
        Calendar calendar = Calendar.getInstance();
        calendar.add(Calendar.DAY_OF_YEAR, days);
        calendar.set(Calendar.MILLISECOND, 0);
        calendar.set(Calendar.SECOND, 0);
        Date tEndDate = calendar.getTime();
        calendar.add(Calendar.HOUR_OF_DAY, -1);
        Date tStartDate = calendar.getTime();
        Map<String, Date> tMap = new HashMap<String, Date>(2);
        tMap.put("startdate", tStartDate);
        tMap.put("enddate", tEndDate);
        return tMap;

    }

    public static boolean isNotBlank(Date date) {
        if (date == null) {
            return false;
        }
        return true;
    }

}