import { t } from './i18n'

export function caculateTimeago(dateTimeStamp: number): string {
  /* dateTimeStamp 格式为时间戳 1747099388981
		1. 刚刚，1分钟内，如  刚刚
		2. 今天的，就显示时间，如  17:45 ；
		3. 昨天的，参考微信，显示：昨天 17:34 （注意汉字和时间有空格）；
		4. 今年的，前天及以前，显示：3月6日 17:34 ；
		5. 去年的，如   2025年3月6日 17:34
	*/
  const minute = 1000 * 60;
  const now = new Date().getTime();
  const diffValue = now - dateTimeStamp;
  let result = '';

  if (diffValue < 0) {
    return t('nowText');
  }

  const minC = Math.floor(diffValue / minute);

  // 刚刚：1分钟内
  if (minC === 0) {
    result = t('nowText'); // 刚刚
  }
  // 今天：当天
  else if (isToday(dateTimeStamp)) {
    const timeStr = formatTime(dateTimeStamp);
    result = timeStr; // 如 "17:45"
  }
  // 昨天：前一天
  else if (isYesterday(dateTimeStamp)) {
    const timeStr = formatTime(dateTimeStamp);
    result = `昨天 ${timeStr}`; // 如 "昨天 17:45"
  }
  // 更早：显示具体日期时间
  else {
    result = formatDateWithYear(dateTimeStamp); // 如 "2025年3月6日 17:34"
  }

  return result;
}

function isToday(timestamp: number): boolean {
  const today = new Date();
  const date = new Date(timestamp);
  return (
    date.getFullYear() === today.getFullYear() &&
    date.getMonth() === today.getMonth() &&
    date.getDate() === today.getDate()
  );
}

function isYesterday(timestamp: number): boolean {
  const yesterday = new Date();
  yesterday.setDate(yesterday.getDate() - 1);
  const date = new Date(timestamp);
  return (
    date.getFullYear() === yesterday.getFullYear() &&
    date.getMonth() === yesterday.getMonth() &&
    date.getDate() === yesterday.getDate()
  );
}

function formatTime(timestamp: number): string {
  const date = new Date(timestamp);
  const hours = date.getHours().toString().padStart(2, '0');
  const minutes = date.getMinutes().toString().padStart(2, '0');
  return `${hours}:${minutes}`;
}

function formatDateWithYear(timestamp: number): string {
  const date = new Date(timestamp);
  const now = new Date();
  const isThisYear = date.getFullYear() === now.getFullYear();

  const month = (date.getMonth() + 1).toString().padStart(2, '0');
  const day = date.getDate().toString().padStart(2, '0');
  const hours = date.getHours().toString().padStart(2, '0');
  const minutes = date.getMinutes().toString().padStart(2, '0');

  if (isThisYear) {
    return `${month}月${day}日 ${hours}:${minutes}`; // 如 "3月6日 17:34"
  } else {
    const year = date.getFullYear();
    return `${year}年${month}月${day}日 ${hours}:${minutes}`; // 如 "2025年3月6日 17:34"
  }
}

export const formatDateRange = (type) => {
  const date = new Date()
  let year = date.getFullYear()
  let month: string | number = date.getMonth() + 1
  let day: string | number = date.getDate()

  if (type === 'start') {
    year = year - 100
  } else if (type === 'end') {
    year = year
  }
  month = month > 9 ? month : '0' + month
  day = day > 9 ? day : '0' + day
  return `${year}-${month}-${day}`
}