26 lines
603 B
JavaScript
26 lines
603 B
JavaScript
import models from '../models';
|
|
|
|
const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
|
|
|
|
function randomID() {
|
|
let rand = '';
|
|
for (let i = 0; i < 12; i += 1) {
|
|
rand += chars.charAt(Math.floor((Math.random() * chars.length)));
|
|
}
|
|
return rand;
|
|
}
|
|
|
|
async function checkId(Files, fileId, attempts) {
|
|
if (attempts > 10) {
|
|
return false;
|
|
}
|
|
const file = await models.file.findById(fileId);
|
|
if (file === null) {
|
|
return fileId;
|
|
}
|
|
return checkId(Files, randomID(), attempts + 1);
|
|
}
|
|
|
|
export default function (Files) {
|
|
return checkId(Files, randomID(), 0);
|
|
}
|