feat: introduce aidx and make it default

Co-Authored-By: MeiMei <30769358+mei23@users.noreply.github.com>

packages/backend/package.json

@@ -120,6 +120,7 @@
 		"mime-types": "2.1.35",
 		"misskey-js": "workspace:*",
 		"ms": "3.0.0-canary.1",
+		"nanoid": "4.0.2",
 		"nested-property": "4.0.0",
 		"node-fetch": "3.3.2",
 		"nodemailer": "6.9.4",

packages/backend/src/core/IdService.ts

@@ -8,6 +8,7 @@ import { ulid } from 'ulid';
 import { DI } from '@/di-symbols.js';
 import type { Config } from '@/config.js';
 import { genAid, parseAid } from '@/misc/id/aid.js';
+import { genAidx, parseAidx } from '@/misc/id/aidx.js';
 import { genMeid, parseMeid } from '@/misc/id/meid.js';
 import { genMeidg, parseMeidg } from '@/misc/id/meidg.js';
 import { genObjectId, parseObjectId } from '@/misc/id/object-id.js';
@@ -31,6 +32,7 @@ export class IdService {
 
 		switch (this.method) {
 			case 'aid': return genAid(date);
+			case 'aidx': return genAidx(date);
 			case 'meid': return genMeid(date);
 			case 'meidg': return genMeidg(date);
 			case 'ulid': return ulid(date.getTime());
@@ -43,6 +45,7 @@ export class IdService {
 	public parse(id: string): { date: Date; } {
 		switch (this.method) {
 			case 'aid': return parseAid(id);
+			case 'aidx': return parseAidx(id);
 			case 'objectid': return parseObjectId(id);
 			case 'meid': return parseMeid(id);
 			case 'meidg': return parseMeidg(id);

packages/backend/src/misc/id/aidx.ts

@@ -0,0 +1,44 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and other misskey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+// AIDX
+// 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4の[個体ID] + 長さ4の[カウンタ]
+// (c) mei23
+// https://misskey.m544.net/notes/71899acdcc9859ec5708ac24
+
+import { customAlphabet } from 'nanoid';
+
+export const aidxRegExp = /^[0-9a-z]{16}$/;
+
+const TIME2000 = 946684800000;
+const TIME_LENGTH = 8;
+const NODE_LENGTH = 4;
+const NOISE_LENGTH = 4;
+
+const nodeId = customAlphabet('0123456789abcdefghijklmnopqrstuvwxyz', NODE_LENGTH)();
+let counter = 0;
+
+function getTime(time: number): string {
+	time = time - TIME2000;
+	if (time < 0) time = 0;
+
+	return time.toString(36).padStart(TIME_LENGTH, '0').slice(-TIME_LENGTH);
+}
+
+function getNoise(): string {
+	return counter.toString(36).padStart(NOISE_LENGTH, '0').slice(-NOISE_LENGTH);
+}
+
+export function genAidx(date: Date): string {
+	const t = date.getTime();
+	if (isNaN(t)) throw new Error('Failed to create AIDX: Invalid Date');
+	counter++;
+	return getTime(t) + nodeId + getNoise();
+}
+
+export function parseAidx(id: string): { date: Date; } {
+	const time = parseInt(id.slice(0, TIME_LENGTH), 36) + TIME2000;
+	return { date: new Date(time) };
+}

packages/backend/test/unit/AnnouncementService.ts

@@ -12,7 +12,7 @@ import { GlobalModule } from '@/GlobalModule.js';
 import { AnnouncementService } from '@/core/AnnouncementService.js';
 import type { MiAnnouncement, AnnouncementsRepository, AnnouncementReadsRepository, UsersRepository, MiUser } from '@/models/index.js';
 import { DI } from '@/di-symbols.js';
-import { genAid } from '@/misc/id/aid.js';
+import { genAidx } from '@/misc/id/aidx.js';
 import { CacheService } from '@/core/CacheService.js';
 import { IdService } from '@/core/IdService.js';
 import { GlobalEventService } from '@/core/GlobalEventService.js';
@@ -33,7 +33,7 @@ describe('AnnouncementService', () => {
 	function createUser(data: Partial<MiUser> = {}) {
 		const un = secureRndstr(16);
 		return usersRepository.insert({
-			id: genAid(new Date()),
+			id: genAidx(new Date()),
 			createdAt: new Date(),
 			username: un,
 			usernameLower: un,
@@ -44,7 +44,7 @@ describe('AnnouncementService', () => {
 
 	function createAnnouncement(data: Partial<MiAnnouncement> = {}) {
 		return announcementsRepository.insert({
-			id: genAid(new Date()),
+			id: genAidx(new Date()),
 			createdAt: new Date(),
 			updatedAt: null,
 			title: 'Title',

packages/backend/test/unit/RoleService.ts

@@ -14,7 +14,7 @@ import { RoleService } from '@/core/RoleService.js';
 import type { MiRole, RolesRepository, RoleAssignmentsRepository, UsersRepository, MiUser } from '@/models/index.js';
 import { DI } from '@/di-symbols.js';
 import { MetaService } from '@/core/MetaService.js';
-import { genAid } from '@/misc/id/aid.js';
+import { genAidx } from '@/misc/id/aidx.js';
 import { CacheService } from '@/core/CacheService.js';
 import { IdService } from '@/core/IdService.js';
 import { GlobalEventService } from '@/core/GlobalEventService.js';
@@ -37,7 +37,7 @@ describe('RoleService', () => {
 	function createUser(data: Partial<MiUser> = {}) {
 		const un = secureRndstr(16);
 		return usersRepository.insert({
-			id: genAid(new Date()),
+			id: genAidx(new Date()),
 			createdAt: new Date(),
 			username: un,
 			usernameLower: un,
@@ -48,7 +48,7 @@ describe('RoleService', () => {
 
 	function createRole(data: Partial<MiRole> = {}) {
 		return rolesRepository.insert({
-			id: genAid(new Date()),
+			id: genAidx(new Date()),
 			createdAt: new Date(),
 			updatedAt: new Date(),
 			lastUsedAt: new Date(),

packages/backend/test/unit/misc/id.ts

@@ -6,6 +6,7 @@
 import { ulid } from 'ulid';
 import { describe, test, expect } from '@jest/globals';
 import { aidRegExp, genAid, parseAid } from '@/misc/id/aid.js';
+import { aidxRegExp, genAidx, parseAidx } from '@/misc/id/aidx.js';
 import { genMeid, meidRegExp, parseMeid } from '@/misc/id/meid.js';
 import { genMeidg, meidgRegExp, parseMeidg } from '@/misc/id/meidg.js';
 import { genObjectId, objectIdRegExp, parseObjectId } from '@/misc/id/object-id.js';
@@ -19,6 +20,13 @@ describe('misc:id', () => {
 		expect(parseAid(gotAid).date.getTime()).toBe(date.getTime());
 	});
 
+	test('aidx', () => {
+		const date = new Date();
+		const gotAidx = genAidx(date);
+		expect(gotAidx).toMatch(aidxRegExp);
+		expect(parseAidx(gotAidx).date.getTime()).toBe(date.getTime());
+	});
+
 	test('meid', () => {
 		const date = new Date();
 		const gotMeid = genMeid(date);