perf(backend): createdAtをidから取得するように & 無駄なDateインスタンスの生成を避けるように

packages/backend/src/server/api/endpoints/admin/drive/show-file.ts

@@ -8,6 +8,7 @@ import type { DriveFilesRepository, UsersRepository } from '@/models/_.js';
 import { Endpoint } from '@/server/api/endpoint-base.js';
 import { DI } from '@/di-symbols.js';
 import { RoleService } from '@/core/RoleService.js';
+import { IdService } from '@/core/IdService.js';
 import { ApiError } from '../../../error.js';
 
 export const meta = {
@@ -163,6 +164,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 		private usersRepository: UsersRepository,
 
 		private roleService: RoleService,
+		private idService: IdService,
 	) {
 		super(meta, paramDef, async (ps, me) => {
 			const file = ps.fileId ? await this.driveFilesRepository.findOneBy({ id: ps.fileId }) : await this.driveFilesRepository.findOne({
@@ -212,7 +214,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				type: file.type,
 				name: file.name,
 				md5: file.md5,
-				createdAt: file.createdAt.toISOString(),
+				createdAt: this.idService.parse(file.id).date.toISOString(),
 				requestIp: iAmModerator ? file.requestIp : null,
 				requestHeaders: iAmModerator && !ownerIsModerator ? file.requestHeaders : null,
 			};