package com.ltgk.common.utils;

import cn.hutool.core.date.DateField;
import cn.hutool.core.date.DateUtil;
import org.apache.commons.lang3.time.DateFormatUtils;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.*;
import java.time.format.DateTimeFormatter;
import java.util.Date;
import java.util.List;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

/**
 * 时间工具类
 *
 * @author wankun
 */
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 YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

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

    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"};

    /**
     * 获取当前Date型日期
     *
     * @return Date() 当前日期
     */
    public static Date getNowDate() {
        return new Date();
    }

    public static String getYear() {
        return dateTimeNow(YYYY);
    }

    /**
     * 获取当前日期, 默认格式为yyyy-MM-dd
     *
     * @return String
     */
    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 dateTimeDDHHMMSS(Date date) {
        return parseDateToStr(YYYY_MM_DD_HH_MM_SS, 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 final Date todayStartTime() {
        LocalDate today = LocalDate.now();
        LocalDateTime startOfDay = today.atStartOfDay();
        return Date.from(startOfDay.atZone(ZoneId.systemDefault()).toInstant());
    }

    public static final Date todayEndTime() {
        LocalDate today = LocalDate.now();
        LocalDateTime endOfDay = today.atTime(23, 59, 59);
        return Date.from(endOfDay.atZone(ZoneId.systemDefault()).toInstant());
    }

    public static final Date yearStartTime() {
        LocalDate firstDayOfYear = LocalDate.now().withDayOfYear(1); // 今年的第一天
        LocalDateTime startOfYear = firstDayOfYear.atStartOfDay(); // 当天的 00:00:00
        return Date.from(startOfYear.atZone(ZoneId.systemDefault()).toInstant());
    }

    /**
     * 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);
    }

    /**
     * 计算相差天数
     */
    public static int differentDaysByMillisecond(Date date1, Date date2) {
        return Math.abs((int) ((date2.getTime() - date1.getTime()) / (1000 * 3600 * 24)));
    }

    /**
     * 计算时间差
     *
     * @param endDate   最后时间
     * @param startTime 开始时间
     * @return 时间差（天/小时/分钟）
     */
    public static String timeDistance(Date endDate, Date startTime) {
        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() - startTime.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";
    }

    /**
     * 增加 LocalDateTime ==> Date
     */
    public static Date toDate(LocalDateTime temporalAccessor) {
        ZonedDateTime zdt = temporalAccessor.atZone(ZoneId.systemDefault());
        return Date.from(zdt.toInstant());
    }

    /**
     * 增加 LocalDate ==> Date
     */
    public static Date toDate(LocalDate temporalAccessor) {
        LocalDateTime localDateTime = LocalDateTime.of(temporalAccessor, LocalTime.of(0, 0, 0));
        ZonedDateTime zdt = localDateTime.atZone(ZoneId.systemDefault());
        return Date.from(zdt.toInstant());
    }

    public static String toDate(String str) {
        try {
            DateTimeFormatter parsePatterns = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
            LocalDateTime localDateTime = LocalDateTime.parse(str, parsePatterns);
            // 将 LocalDateTime 转换为 ZonedDateTime 并指定时区为 UTC
            ZonedDateTime zonedDateTime = localDateTime.atZone(ZoneOffset.systemDefault()).withZoneSameInstant(ZoneOffset.UTC);
            // 格式化输出为 ISO 8601 格式
            return zonedDateTime.format(DateTimeFormatter.ISO_INSTANT);
        } catch (Exception e) {
            return null;
        }
    }

    /**
     * 获取以前的时间
     *
     * @return
     */
    public static Date getAgoTime(Integer num, TimeUnit time) {
        // 获取当前时间
        LocalDateTime now = LocalDateTime.now();
        LocalDateTime agoTime = null;
        switch (time) {
            case HOURS:
                agoTime = now.minusHours(num);
                break;
            case DAYS:
                agoTime = now.minusDays(num);
                break;
            case MINUTES:
                agoTime = now.minusMinutes(num);
                break;
            case SECONDS:
                agoTime = now.minusSeconds(num);
                break;
        }

        return Date.from(agoTime.atZone(ZoneId.systemDefault()).toInstant());

    }

    /**
     * 获取两个时间之间的 年-月 列表
     * @author Qi ChengBin
     * @param startTime: 开始时间
	 * @param endTime：结束时间
     * @return java.util.List<java.lang.String>
     * @date 2025/6/11
     */
    public static List<String> findRangeYearMonthToList(String startTime, String endTime){
        Date startDate = DateUtil.parse(startTime);
        Date endDate = DateUtil.parse(endTime);
        return DateUtil.rangeToList(startDate, endDate, DateField.MONTH)
                .stream()
                .map(dateTime -> dateTime.toString(YYYY_MM)) // 转换为字符串格式
                .collect(Collectors.toList());
    }
}
