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/*
* SPDX-FileCopyrightText: syuilo and misskey-project
* SPDX-License-Identifier: AGPL-3.0-only
*/
// AID
// 長さ8の[2000年1月1日からの経過ミリ秒をbase36でエンコードしたもの] + 長さ2の[ノイズ文字列]
import * as crypto from 'node:crypto';
import { parseBigInt36 } from '@/misc/bigint.js';
export const aidRegExp = /^[0-9a-z]{10}$/;
const TIME2000 = 946684800000;
let counter = crypto.randomBytes(2).readUInt16LE(0);
function getTime(time: number): string {
time = time - TIME2000;
if (time < 0) time = 0;
return time.toString(36).padStart(8, '0');
}
function getNoise(): string {
return counter.toString(36).padStart(2, '0').slice(-2);
}
export function genAid(t: number): string {
if (isNaN(t)) throw new Error('Failed to create AID: Invalid Date');
counter++;
return getTime(t) + getNoise();
}
export function parseAid(id: string): { date: Date; } {
const time = parseInt(id.slice(0, 8), 36) + TIME2000;
return { date: new Date(time) };
}
export function parseAidFull(id: string): { date: number; additional: bigint; } {
const date = parseInt(id.slice(0, 8), 36) + TIME2000;
const additional = parseBigInt36(id.slice(8, 10));
return { date, additional };
}
export function isSafeAidT(t: number): boolean {
return t > TIME2000;
}
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