harmony_vehicle_terminal/entry/src/main/ets/utils/Common.ets

import dayTs from './Date';

enum timeType {
  fulltime = 1
}

/**
 * 获取当前时间
 * @param type
 * @returns
 */
export function GetCurrentTime(type?: timeType): string {
  if (type === 1) {
    return dayTs().format("YYYYMMDDHHmmss")
  } else {
    return dayTs().format("YYYY-MM-DD HH:mm:ss")
  }
}

/**
 * 是否是指定天数之前
 * @param date
 * @param days
 * @returns
 */
export function IsDaysAgo(date: string | number | Date, days: number = 2): boolean {
  const today = dayTs(); // 当前日期
  const target = dayTs(date).format("YYYY-MM-DD HH:mm:ss.SSS"); // 需要判断的日期
  // 计算两个日期之间的差异天数
  const diffDays = today.diff(target, 'day');
  // 如果差异天数大于等于指定天数，则返回 true
  return diffDays >= days;
}

/**
 * 字符串转字节数组
 * @param str
 * @returns
 */
export function StringToBytes(str: string): Uint8Array {
  const bytes = new Uint8Array(str.length);
  for (let i = 0; i < str.length; i++) {
    bytes[i] = str.charCodeAt(i);
  }
  return bytes;
}

/**
 * 字符串转ASCII码
 */
export function StringToASCII(str: string): number[] {
  const arr: number[] = [];
  for (let i = 0; i < str.length; i++) {
    arr.push(str.charCodeAt(i));
  }
  return arr;
}

/**
 * 数组转字节
 */
export function ArrayToByteArray(array: number[]): Uint8Array {
  const buf = new ArrayBuffer(array.length);
  const view = new Uint8Array(buf);
  for (let i = 0; i < array.length; i++) {
    view[i] = array[i] & 0xFF;
  }
  return view;
}

/**
 * 数字转字节数组
 * @param number 要转换的数字
 * @param len 字节数
 * @returns 返回字节数组
 */
export function NumberToByteArray(number: number | string, len: number): number[] {
  let str = Math.floor(Number(number)).toString(2);
  if (str.length > len) {
    console.log('数据长度不对~~');
    return [];
  }
  const byteString = FillZero(str, len);

  const arrBytes: number[] = [];
  for (let i = byteString.length; i > 0; ) {
    let j = i - 8;
    if (j < 0) {
      j = 0;
    }
    const s = byteString.slice(j, i);
    const v = parseInt(s, 2);
    arrBytes.push(v);
    i -= 8;
  }
  return arrBytes;
}

export function FillZero(str: string | number, len: number): string {
  str = str.toString();
  if (str.length >= len || len <= 0) {
    return str;
  }
  const zeroStr = '0'.repeat(len - str.length);
  return zeroStr + str;
}