utils.ts•1.37 kB
import crypto from 'crypto';
export const generateOutPutFileId = (objectKey: string) => {
const now = new Date();
const formattedDate = [
now.getFullYear(),
String(now.getMonth() + 1).padStart(2, '0'), // 月份补零
String(now.getDate()).padStart(2, '0'), // 日期补零
].join('');
if (objectKey) {
const lastDotIndex = objectKey.lastIndexOf('.');
const base =
lastDotIndex === -1 ? objectKey : objectKey.substring(0, lastDotIndex);
const outPutFileid = `${formattedDate}_${base}_${generateCode()}`;
return encodeURIComponent(outPutFileid);
} else {
const outPutFileid = `${formattedDate}_${generateCode()}`;
return encodeURIComponent(outPutFileid);
}
};
export const generateCode = (length = 6, useSecure = true) => {
const chars =
'ABCDEFGHJKLMNPQRSTUVWXYZ' + // 大写字母（排除 I, O）
'abcdefghjkmnpqrstuvwxyz' + // 小写字母（排除 i, l, o）
'23456789'; // 数字（排除 0, 1）
let code = '';
if (useSecure) {
// 使用加密安全的随机数
const randomBytes = crypto.randomBytes(length);
for (let i = 0; i < length; i++) {
code += chars[randomBytes[i] % chars.length];
}
} else {
// 使用普通随机数
for (let i = 0; i < length; i++) {
code += chars[Math.floor(Math.random() * chars.length)];
}
}
return code;
};