6 files changed, 58 insertions, 4 deletions
diff --git a/packages/backend/src/misc/id/aid.ts b/packages/backend/src/misc/id/aid.ts
index 60ba788e44..c0e8478db5 100644
--- a/packages/backend/src/misc/id/aid.ts
+++ b/packages/backend/src/misc/id/aid.ts
@@ -7,6 +7,7 @@
 // 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}$/;
 
@@ -35,6 +36,12 @@ export function parseAid(id: string): { date: Date; } {
 	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;
 }
diff --git a/packages/backend/src/misc/id/aidx.ts b/packages/backend/src/misc/id/aidx.ts
index 1b087e70af..006673a6d0 100644
--- a/packages/backend/src/misc/id/aidx.ts
+++ b/packages/backend/src/misc/id/aidx.ts
@@ -9,6 +9,7 @@
 // https://misskey.m544.net/notes/71899acdcc9859ec5708ac24
 
 import { customAlphabet } from 'nanoid';
+import { parseBigInt36 } from '@/misc/bigint.js';
 
 export const aidxRegExp = /^[0-9a-z]{16}$/;
 
@@ -16,6 +17,7 @@ const TIME2000 = 946684800000;
 const TIME_LENGTH = 8;
 const NODE_LENGTH = 4;
 const NOISE_LENGTH = 4;
+const AIDX_LENGTH = TIME_LENGTH + NODE_LENGTH + NOISE_LENGTH;
 
 const nodeId = customAlphabet('0123456789abcdefghijklmnopqrstuvwxyz', NODE_LENGTH)();
 let counter = 0;
@@ -42,6 +44,12 @@ export function parseAidx(id: string): { date: Date; } {
 	return { date: new Date(time) };
 }
 
+export function parseAidxFull(id: string): { date: number; additional: bigint; } {
+	const date = parseInt(id.slice(0, TIME_LENGTH), 36) + TIME2000;
+	const additional = parseBigInt36(id.slice(TIME_LENGTH, AIDX_LENGTH));
+	return { date, additional };
+}
+
 export function isSafeAidxT(t: number): boolean {
 	return t > TIME2000;
 }
diff --git a/packages/backend/src/misc/id/meid.ts b/packages/backend/src/misc/id/meid.ts
index dfab48a369..563e07ed8f 100644
--- a/packages/backend/src/misc/id/meid.ts
+++ b/packages/backend/src/misc/id/meid.ts
@@ -3,6 +3,8 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
+import { parseBigInt16 } from '@/misc/bigint.js';
+
 const CHARS = '0123456789abcdef';
 
 // same as object-id
@@ -39,6 +41,13 @@ export function parseMeid(id: string): { date: Date; } {
 	};
 }
 
+export function parseMeidFull(id: string): { date: number; additional: bigint; } {
+	return {
+		date: parseInt(id.slice(0, 12), 16) - 0x800000000000,
+		additional: parseBigInt16(id.slice(12, 24)),
+	};
+}
+
 export function isSafeMeidT(t: number): boolean {
 	return t > 0;
 }
diff --git a/packages/backend/src/misc/id/meidg.ts b/packages/backend/src/misc/id/meidg.ts
index b9c0cc3dda..b825807114 100644
--- a/packages/backend/src/misc/id/meidg.ts
+++ b/packages/backend/src/misc/id/meidg.ts
@@ -3,6 +3,8 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
+import { parseBigInt16 } from '@/misc/bigint.js';
+
 const CHARS = '0123456789abcdef';
 
 //  4bit Fixed hex value 'g'
@@ -39,6 +41,13 @@ export function parseMeidg(id: string): { date: Date; } {
 	};
 }
 
+export function parseMeidgFull(id: string): { date: number; additional: bigint; } {
+	return {
+		date: parseInt(id.slice(1, 12), 16),
+		additional: parseBigInt16(id.slice(12, 24)),
+	};
+}
+
 export function isSafeMeidgT(t: number): boolean {
 	return t > 0;
 }
diff --git a/packages/backend/src/misc/id/object-id.ts b/packages/backend/src/misc/id/object-id.ts
index 243f92bbac..68409c7a61 100644
--- a/packages/backend/src/misc/id/object-id.ts
+++ b/packages/backend/src/misc/id/object-id.ts
@@ -3,6 +3,8 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
+import { parseBigInt16 } from '@/misc/bigint.js';
+
 const CHARS = '0123456789abcdef';
 
 // same as meid
@@ -39,6 +41,13 @@ export function parseObjectId(id: string): { date: Date; } {
 	};
 }
 
+export function parseObjectIdFull(id: string): { date: number; additional: bigint; } {
+	return {
+		date: parseInt(id.slice(0, 8), 16) * 1000,
+		additional: parseBigInt16(id.slice(8, 24)),
+	};
+}
+
 export function isSafeObjectIdT(t: number): boolean {
 	return t > 0;
 }
diff --git a/packages/backend/src/misc/id/ulid.ts b/packages/backend/src/misc/id/ulid.ts
index fc3654d6d2..8b81702d19 100644
--- a/packages/backend/src/misc/id/ulid.ts
+++ b/packages/backend/src/misc/id/ulid.ts
@@ -5,15 +5,27 @@
 
 // Crockford's Base32
 // https://github.com/ulid/spec#encoding
+import { parseBigInt32 } from '@/misc/bigint.js';
+
 const CHARS = '0123456789ABCDEFGHJKMNPQRSTVWXYZ';
 
 export const ulidRegExp = /^[0123456789ABCDEFGHJKMNPQRSTVWXYZ]{26}$/;
 
-export function parseUlid(id: string): { date: Date; } {
-	const timestamp = id.slice(0, 10);
+function parseBase32(timestamp: string) {
 	let time = 0;
-	for (let i = 0; i < 10; i++) {
+	for (let i = 0; i < timestamp.length; i++) {
 		time = time * 32 + CHARS.indexOf(timestamp[i]);
 	}
-	return { date: new Date(time) };
+	return time;
+}
+
+export function parseUlid(id: string): { date: Date; } {
+	return { date: new Date(parseBase32(id.slice(0, 10))) };
+}
+
+export function parseUlidFull(id: string): { date: number; additional: bigint; } {
+	return {
+		date: parseBase32(id.slice(0, 10)),
+		additional: parseBigInt32(id.slice(10, 26)),
+	};
 }