package com.zy.crm.manager.utils;

import javax.xml.crypto.Data;
import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.ZoneId;
import java.time.temporal.ChronoUnit;
import java.time.temporal.TemporalAdjusters;
import java.time.temporal.WeekFields;
import java.util.*;

public class TimeCalculatorUtils {

    //获取当前时间的小时数（24小时制）：
    public static int nowTimeHour(){
        // 获取当前时间戳
        long timestamp = System.currentTimeMillis();

        // 创建Date对象，并设置时间戳
        Date date = new Date(timestamp);

        // 创建TimeZone对象，设置为中国北京时间
        TimeZone timeZone = TimeZone.getTimeZone("Asia/Shanghai");

        // 创建Calendar对象，并设置时区
        // 注意：Calendar类中的月份是从0开始的，所以需要减去1
        java.util.Calendar calendar = java.util.Calendar.getInstance(timeZone);
        calendar.setTime(date);

        // 获取当前小时数（24小时制）
        return calendar.get(java.util.Calendar.HOUR_OF_DAY);
    }

    //获取当天小时数（24小时制）中国北京时间：
    public static int timeTimeHour(Date date){
        // 创建TimeZone对象，设置为中国北京时间
        TimeZone timeZone = TimeZone.getTimeZone("Asia/Shanghai");

        // 创建Calendar对象，并设置时区
        // 注意：Calendar类中的月份是从0开始的，所以需要减去1
        java.util.Calendar calendar = java.util.Calendar.getInstance(timeZone);
        calendar.setTime(date);

        // 获取当前小时数（24小时制）
        return calendar.get(java.util.Calendar.HOUR_OF_DAY);
    }

    //获取前一天的日期（日期天数减一）
    public static Date timeYesterday(Date date){
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.add(Calendar.DAY_OF_MONTH, -1);
        return calendar.getTime();
    }

    //获取七天前的日期（日期天数减七）
    public static Date timeFrontSevenYesterday(Date date){
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.add(Calendar.DAY_OF_MONTH, -7);
        return calendar.getTime();
    }

    //获取七天后的日期（日期天数加七）
    public static Date timeAfterSevenYesterday(Date date){
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.add(Calendar.DAY_OF_MONTH, 7);
        return calendar.getTime();
    }

    //获取相差n天的日期（日期天数加N）
    public static Date timeYesterdayN(Date date,int day){
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.add(Calendar.DAY_OF_MONTH, day);
        return calendar.getTime();
    }

    //获取年月日
    public static String timeYestMonthDay(Date date){
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);

        int year = calendar.get(Calendar.YEAR);
        int month = calendar.get(Calendar.MONTH) + 1;  // 月份从0开始，需要加1
        int day = calendar.get(Calendar.DAY_OF_MONTH);
        return year+"年"+month+"月"+day+"日";
    }

    //获取年
    public static int timeYest(Date date){
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);

        return calendar.get(Calendar.YEAR);
    }

    //获取月
    public static int timeMonth(Date date){
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);

        return calendar.get(Calendar.MONTH) + 1;
    }

    //获取日
    public static int timeDay(Date date){
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);

        return calendar.get(Calendar.DAY_OF_MONTH);
    }
    //获取年差异
    public static int DifferenceYest(Date startDay,Date endDay){
        int startYest = timeYest(startDay);
        int endYest = timeYest(endDay);
        return endYest-startYest;
    }
    //获取月差异
    public static int DifferenceMonth(Date startDay,Date endDay){
        int startMonth = timeMonth(startDay);
        int endMonth = timeMonth(endDay);
        return endMonth-startMonth;
    }
    //获取天差异
    public static int DifferenceDayInt(Date startDay,Date endDay){
        return DifferenceDayLong(startDay,endDay).intValue();
    }
    //获取天差异
    public static Long DifferenceDayLong(Date startDay,Date endDay){

        LocalDate a = LocalDate.of(timeYest(startDay), timeMonth(startDay), timeDay(startDay));
        LocalDate b = LocalDate.of(timeYest(endDay), timeMonth(endDay), timeDay(endDay));

        return ChronoUnit.DAYS.between(a, b)+1;
    }
    //获取天差异
    public static Double DifferenceDayMorningAfternoon(Date startDay,Date endDay,int startTime,int endTime){
        double between = DifferenceDayLong(startDay, endDay).doubleValue();
        if (startTime==2){
            between = between-0.5;
        }
        if (endTime == 1){
            between = between-0.5;
        }
        return between;
    }

    public static boolean CompareData(Date startDay,Date endDay){

        // 将日期字符串解析为LocalDate对象
        LocalDate a = LocalDate.of(timeYest(startDay), timeMonth(startDay), timeDay(startDay));
        LocalDate b = LocalDate.of(timeYest(endDay), timeMonth(endDay), timeDay(endDay));

        // 比较日期
        if (a.isAfter(b)) {
            return false;
        } else if (a.isBefore(b)) {
            return true;
        } else {
            return true;
        }
    }

    //java.time.LocalDate 转换为 java.util.Date;
    public static Date DateLocalDate(LocalDate localDate) {
        return Date.from(localDate.atStartOfDay(ZoneId.systemDefault()).toInstant());
    }

    //获取现在日期是当月第几周
    public static int WeeklyNowMonth(Date date) {
//        LocalDate currentDate = LocalDate.now();
        LocalDate currentDate = LocalDate.of(timeYest(date), timeMonth(date), timeDay(date));

        WeekFields weekFields = WeekFields.of(Locale.getDefault());

        int weekOfMonth = currentDate.get(weekFields.weekOfMonth());


        return weekOfMonth;
    }

    //限制两个日期是周一和周末  工作日  周一到周六
    public static void WeeklySix(Date date) {
//        LocalDate startDate = LocalDate.of(2022, 9, 5); // 假设开始日期是2022年9月5日，周一
        LocalDate startDate = LocalDate.of(timeYest(date), timeMonth(date), timeDay(date));
        System.out.println("当前日期 " + startDate + " 周");

        LocalDate endDate = startDate.plus(6, ChronoUnit.DAYS); // 结束日期是开始日期加上6天
        System.out.println("当前日期加上6天是 " + endDate + " 周");


        // 如果开始日期不是周一，则将它调整到下一个周一
        if (startDate.getDayOfWeek() != DayOfWeek.MONDAY) {
            startDate = startDate.with(TemporalAdjusters.next(DayOfWeek.MONDAY));
        }

        // 如果结束日期不是周末（即周六或周日），则将它调整到下一个周末
        if (endDate.getDayOfWeek() != DayOfWeek.SATURDAY && endDate.getDayOfWeek() != DayOfWeek.SUNDAY) {
            endDate = endDate.with(TemporalAdjusters.next(DayOfWeek.SATURDAY));
        }

        // 确保两个日期之间相隔七天
        while (startDate.plus(7, ChronoUnit.DAYS).isBefore(endDate)) {
            startDate = startDate.plus(7, ChronoUnit.DAYS);
        }

        System.out.println("开始日期：" + startDate);
        System.out.println("结束日期：" + endDate);
    }

    //限制两个日期是周一和周末  周一到周日
    public static List<Date> WeeklySeven(Date date) {
//        LocalDate startDate = LocalDate.of(2022, 9, 5); // 假设开始日期是2022年9月5日，周一
        LocalDate startDate = LocalDate.of(timeYest(date), timeMonth(date), timeDay(date));
//        System.out.println("当前日期 " + startDate + " 周");

        LocalDate endDate = startDate.plus(6, ChronoUnit.DAYS); // 结束日期是开始日期加上6天
//        System.out.println("当前日期加上6天是 " + endDate + " 周");

        // 如果开始日期不是周一，则将它调整到下一个周一
        if (startDate.getDayOfWeek() != DayOfWeek.MONDAY) {
            startDate = startDate.with(TemporalAdjusters.next(DayOfWeek.MONDAY));
        }

        // 如果结束日期不是周日，则将它调整到下一个周日
        if (endDate.getDayOfWeek() != DayOfWeek.SUNDAY) {
            endDate = endDate.with(TemporalAdjusters.next(DayOfWeek.SUNDAY));
        }

        // 确保两个日期之间相隔七天
        while (startDate.plus(7, ChronoUnit.DAYS).isBefore(endDate)) {
            startDate = startDate.plus(7, ChronoUnit.DAYS);
        }

        List<Date> dateList = new ArrayList<>();
        dateList.add(DateLocalDate(startDate));
        dateList.add(DateLocalDate(endDate));
        return dateList;
//        System.out.println("开始日期：" + startDate);
//        System.out.println("结束日期：" + endDate);
    }

    //判断是不是周一
    public static boolean WeeklyOneSign(Date date) {
        LocalDate localDate = LocalDate.of(timeYest(date), timeMonth(date), timeDay(date));
        // 判断是不是周一
        if (localDate.getDayOfWeek() != DayOfWeek.MONDAY) {
            return false;
        }
        return true;
    }

    //获取本周周一
    public static Date WeeklyMonday (Date date) {
        LocalDate localDate = LocalDate.of(timeYest(date), timeMonth(date), timeDay(date));
        // 判断是不是周一 则将它调整到下周周一
        localDate = localDate.with(TemporalAdjusters.next(DayOfWeek.MONDAY));

        // 将LocalDate转换为Date
        Date monday = DateLocalDate(localDate);

        // 则将它调整到本周周一
        return timeFrontSevenYesterday(monday);
    }

    //获取当前日期所在的周一及周日时间
    public static List<Date> WeeklyMondayAndSundayNow(Date date) {
        Date nowMonday = WeeklyMonday(date);
        return WeeklySeven(nowMonday);
    }

    //获取当前日期上一周周一及周日时间
    public static List<Date> WeeklyMondayAndSundayFront(Date date) {
        Date nowMonday = WeeklyMonday(date);
        Date frontSevenYesterday = timeFrontSevenYesterday(nowMonday);
        return WeeklySeven(frontSevenYesterday);
    }

    //获取当前日期下一周周一及周日时间
    public static List<Date> WeeklyMondayAndSundayAfter(Date date) {
        Date nowMonday = WeeklyMonday(date);
        Date afterSevenYesterday = timeAfterSevenYesterday(nowMonday);
        return WeeklySeven(afterSevenYesterday);
    }

    //获取周一到周末
    public static List<Date> WeeklyDays(Date date){
        Date nowMonday = WeeklyMonday(date);
        List<Date> dateList = new ArrayList<>();
        dateList.add(nowMonday);
        for (int i = 1; i<7 ; i++){
            dateList.add(timeYesterdayN(nowMonday,i));
        }
        return dateList;
    }

    public static void main(String[] args) {
        Date now = new Date();
        //本周
        List<Date> dateList = WeeklyMondayAndSundayNow(now);
        for (Date date : dateList){
            System.out.println("------------------------------");
            System.out.println(date);
        }
        //上周
        List<Date> dateList1 = WeeklyMondayAndSundayFront(now);
        for (Date date : dateList1){
            System.out.println("------------------------------");
            System.out.println(date);
        }
        //下周
        List<Date> dateList2 = WeeklyMondayAndSundayAfter(now);
        for (Date date : dateList2){
            System.out.println("------------------------------");
            System.out.println(date);
        }
        //周
        List<Date> dateList3 = WeeklyDays(now);
        for (Date date : dateList3){
            System.out.println("------------------------------");
            System.out.println(date);
        }
    }

}