class TimeCalculator {
  constructor() {
    this.timeInterval = null;
    this.isRunning = false;
 
    // 获取DOM元素
    this.yearElement1 = document.getElementById("year1");
    this.yearElement2 = document.getElementById("year2");
 
    // 月份 - 纯数字
    this.monthElement1 = document.getElementById("month1");
    // 月份 - 纯英文
    this.monthElement2 = document.getElementById("month2");
    this.monthElement3 = document.getElementById("month3");
 
    // 一年中的第几周
    this.weekElement = document.getElementById("week");
 
    // 一年之中的第几天
    this.dayOfYearElement = document.getElementById("dayOfYear");
 
    // 星期几
    this.isToDayElement = document.getElementById("isToDay");
 
    // 一个月中的第几天
    this.isDayToMElement = document.getElementById("dayToMonth");
 
    // 时:分
    this.hoursAndMElement1 = document.getElementById("hoursAndMinu1");
    this.hoursAndMElement2 = document.getElementById("hoursAndMinu2");
 
    // 时 - 纯数字
    this.hoursElement = document.getElementById("timeHours");
 
    // 分 - 纯数字
    this.minutesElement = document.getElementById("timeMinutes");
 
    // 秒 - 纯数字
    this.secondsElement = document.getElementById("timeSeconds");
 
    // 时间段
    this.timeSlotElement = document.getElementById("timeSlot");
 
    // 时间段占比
    this.timeScaleElement = document.getElementById("timeScale");
 
    // 初始化显示
    this.updateTime();
  }
 
  start() {
    if (!this.isRunning) {
      this.updateTime();
      this.timeInterval = setInterval(this.updateTime.bind(this), 1000);
      this.isRunning = true;
    }
  }
 
  stop() {
    if (this.isRunning) {
      clearInterval(this.timeInterval);
      this.isRunning = false;
    }
  }
 
  updateTime() {
    const now = new Date();
 
    // 获取时间部分
    const hours = now.getHours().toString().padStart(2, "0");
    const minutes = now.getMinutes().toString().padStart(2, "0");
    const seconds = now.getSeconds().toString().padStart(2, "0");
 
    // 获取日期部分
    const year = now.getFullYear().toString();
    const yearNumber = now.getFullYear();
    const month = (now.getMonth() + 1).toString().padStart(2, "0");
    const day = now.getDate().toString().padStart(2, "0");
 
    // 获取日期部分 - 月份英文
    const monthUS = now.toLocaleString("en-US", { month: "long" });
 
    // 获取星期
    const weekdays = [
      "Sunday",
      "Monday",
      "Tuesday",
      "Wednesday",
      "Thursday",
      "Friday",
      "Saturday",
    ];
    const weekday = weekdays[now.getDay()];
 
    // 获取时间段
    let timeSlot = "morning";
    switch (true) {
      case Number(hours) < 12:
        timeSlot = "morning";
        break;
      case Number(hours) < 17:
        timeSlot = "afternoon";
        break;
      case Number(hours) < 24:
        timeSlot = "evening";
        break;
      default:
        timeSlot = "morning";
    }
 
    // 获取时间段占比
    const timeScale = ((Number(hours) / 24) * 100).toFixed(0);
 
    // 获取年的当前天数
    const startOfYear = new Date(yearNumber, 0, 0);
    const diff1 = now - startOfYear;
    const dayOfYear = Math.ceil(diff1 / (1000 * 60 * 60 * 24));
 
    // 获取年的当前周数
    const firstDayOfYear = new Date(yearNumber, 0, 1);
    const diff = Math.ceil((now - firstDayOfYear) / 86400000);
    const weekOfYear = Math.ceil((diff + firstDayOfYear.getDay() - 1) / 7);
 
    // 更新DOM
    this.yearElement1.textContent = year;
    this.monthElement1.textContent = Number(month);
    this.weekElement.textContent = weekOfYear;
    this.dayOfYearElement.textContent = dayOfYear;
 
    this.isToDayElement.textContent = weekday;
 
    this.isDayToMElement.textContent = day;
    this.monthElement3.textContent = monthUS + ",";
    this.yearElement2.textContent = year + ".";
 
    this.hoursAndMElement1.textContent = `- ${hours}:${minutes} -`;
 
    this.hoursElement.textContent = hours;
    this.minutesElement.textContent = minutes;
    this.secondsElement.textContent = seconds;
 
    this.hoursAndMElement2.textContent = `- ${hours}:${minutes} -`;
    this.timeSlotElement.textContent = timeSlot;
    this.timeScaleElement.textContent = timeScale;
  }
}
 
// 初始化时钟
document.addEventListener("DOMContentLoaded", () => {
  const clock = new TimeCalculator();
  // 默认自动开始
  clock.start();
});