package com.ruoyi.buss.common;

import java.text.DecimalFormat;
import java.time.*;
import java.time.format.DateTimeFormatter;
import java.util.Calendar;
import java.util.Date;

public class DateUtils {

    public static Date setToNextDayZero(Date originalDate) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(originalDate);

        // 增加一天
        calendar.add(Calendar.DAY_OF_MONTH, 1);

        // 设置为零点
        calendar.set(Calendar.HOUR_OF_DAY, 0);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
        calendar.set(Calendar.MILLISECOND, 0);

        return calendar.getTime();
    }

    /**
     * 获取两个日期之间的天数差
     * @param date1
     * @param date2
     * @return
     */
    public static long getSubtractOfTowDate(Date date1, Date date2) {
        // 计算毫秒差
        long diffMillis = Math.abs(date2.getTime() - date1.getTime());
        // 转换为天数并向上取整
        double days = (double) diffMillis / (24 * 60 * 60 * 1000);
        long roundedDays = (long) Math.ceil(days);
        return roundedDays;
    }

    /**
     * 获取两个日期之间的小时数差
     * @param date1
     * @param date2
     * @return
     */
    public static double getDisHourOfTowDate(Date date1, Date date2) {
        // 将Date转换为Instant
        Instant instant1 = date1.toInstant();
        Instant instant2 = date2.toInstant();

        // 计算持续时间
        Duration duration = Duration.between(instant1, instant2);

        // 获取总秒数并转换为小时（向上取整）
        long totalSeconds = duration.getSeconds();
        int hours = (int) Math.ceil((double) totalSeconds / 3600);
        return hours;
    }

    /**
     * 根据开始时间startTime，获取hours小时后的具体时间
     * @param startDate
     * @param hours
     * @return
     */
    public static Date getDateAfterHours(Date startDate, int hours) {
        // 把Date转换为LocalDateTime
        LocalDateTime localDateTime = startDate.toInstant()
                .atZone(ZoneId.systemDefault())
                .toLocalDateTime();

        // 加上指定的小时数
        LocalDateTime newDateTime = localDateTime.plusHours(hours);

        // 再转回Date类型
        Instant instant = newDateTime.atZone(ZoneId.systemDefault()).toInstant();
        return Date.from(instant);
    }

    /**
     * 判断两个时间是否在同一天内
     * @param date1
     * @param date2
     * @return
     */
    public static boolean isSameDay(Date date1, Date date2) {
        // 转换为LocalDate（忽略时区，使用系统默认时区）
        LocalDate localDate1 = date1.toInstant()
                .atZone(ZoneId.systemDefault())
                .toLocalDate();
        LocalDate localDate2 = date2.toInstant()
                .atZone(ZoneId.systemDefault())
                .toLocalDate();
        // 判断是否为同一天
        return localDate1.isEqual(localDate2);
    }

    public static void main(String[] args) {
        String date1 = "2025-05-21 21:10:00";
        String date2 = "2025-05-22 23:20:00";
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        // 解析字符串为LocalDateTime
        LocalDateTime localDateTime1 = LocalDateTime.parse(date1, formatter);
        LocalDateTime localDateTime2 = LocalDateTime.parse(date2, formatter);
        // 转换为Date（需要指定时区，这里使用系统默认时区）
        Instant instant1 = localDateTime1.atZone(ZoneId.systemDefault()).toInstant();
        Instant instant2 = localDateTime2.atZone(ZoneId.systemDefault()).toInstant();
        Date date11 = Date.from(instant1);
        Date date22 = Date.from(instant2);
        long result = getSubtractOfTowDate(date11, date22);
        System.out.println(result);
    }
}