package com.opensesame.budget.utils;

import com.opensesame.core.util.DateUtils;

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

/**
 * 周工具类
 */
public class weekUtils {
//获得当前日期属于今年的第几周
    public static Integer getWeek(Long time) {
        Calendar calendar = Calendar.getInstance();
        calendar.setFirstDayOfWeek(Calendar.MONDAY);//设置星期一为一周开始的第一天
        calendar.setTimeInMillis(time);//获得时间戳
        int weekYear = calendar.get(Calendar.YEAR);//获得当前的年
        int weekOfYear = calendar.get(Calendar.WEEK_OF_YEAR);//获得当前日期属于今年的第几周
        return weekOfYear;
    }

//一年有多少周
    public static Integer getWeekCount(Long year) {
        Calendar calendar = Calendar.getInstance();
        calendar.set(Math.toIntExact(year), 2, 5);
        calendar.setFirstDayOfWeek(Calendar.MONDAY);//设置星期一为一周开始的第一天
//        calendar.setTimeInMillis(time);//获得时间戳
        int weeksInWeekYear = calendar.getWeeksInWeekYear();
        return weeksInWeekYear;
    }

    /**
     * @return
     * @MethodName 日期转换成星期
     * @Description TODO
     * @Param 日期（yyyy-MM-dd）
     * @Date 2019/12/4 12:29
     * @Created by 石昌鹏
     */
    public static String dateToWeek(String datetime) {
        SimpleDateFormat f = new SimpleDateFormat("yyyy-MM-dd");
        String[] weekDays = {"星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"};
        Calendar cal = Calendar.getInstance(); // 获得一个日历
        Date datet = null;
        try {
            datet = f.parse(datetime);
            cal.setTime(datet);
        } catch (Exception e) {
        }
        int w = cal.get(Calendar.DAY_OF_WEEK) - 1; // 指示一个星期中的某天。
        if (w < 0)
            w = 0;
        return weekDays[w];
    }

    /**
     * 获取本年度最后一天
     */
    public static Long getYearEnd(Long year) {
        Calendar calendar = Calendar.getInstance();
        calendar.clear();
        calendar.set(Calendar.YEAR, Math.toIntExact(year));
        calendar.set(Calendar.MONTH, 11);
        calendar.set(Calendar.DAY_OF_MONTH, 31);
        calendar.set(Calendar.HOUR_OF_DAY, 23);
        calendar.set(Calendar.MINUTE, 59);
        calendar.set(Calendar.SECOND, 59);
        calendar.set(Calendar.MILLISECOND, 999);
        return calendar.getTimeInMillis();
    }


    /**
     * 获取本周最后一天最后一秒
     */
    public static Long getWeekend() {
        Calendar cal = Calendar.getInstance();
        int day_of_week = cal.get(Calendar.DAY_OF_WEEK) - 2;
        cal.add(Calendar.DATE, -day_of_week);
        cal.add(Calendar.DATE, 6);
        return DateUtils.getEndTimeOfDay(cal.getTimeInMillis());
    }

    /**
     * 获取本周每一天当前时间的时间戳
     */
    public static List<Long> getNowThisWeek() {
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd E");
        List<Long> re = new ArrayList<>();
        for (Date date : getWeekDay()) {
            System.out.println(date.getTime());
            re.add(date.getTime());
        }
        return re;

    }

    public static Date[] getWeekDay() {
        Calendar calendar = Calendar.getInstance();
        while (calendar.get(Calendar.DAY_OF_WEEK) != Calendar.MONDAY) {
            calendar.add(Calendar.DAY_OF_WEEK, -1);
        }
        Date[] dates = new Date[7];
        for (int i = 0; i < 7; i++) {
            dates[i] = calendar.getTime();
            calendar.add(Calendar.DATE, 1);
        }
        return dates;
    }
}