なんかもうめっちゃ変えた

packages/backend/src/core/entities/DriveFolderEntityService.ts

@@ -0,0 +1,57 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { DI } from '@/di-symbols.js';
+import { DriveFilesRepository, DriveFoldersRepository } from '@/models/index.js';
+import { awaitAll } from '@/misc/prelude/await-all.js';
+import type { Packed } from '@/misc/schema.js';
+import type { } from '@/models/entities/Blocking.js';
+import type { User } from '@/models/entities/User.js';
+import type { DriveFolder } from '@/models/entities/DriveFolder.js';
+import { UserEntityService } from './UserEntityService.js';
+
+@Injectable()
+export class DriveFolderEntityService {
+	constructor(
+		@Inject(DI.driveFoldersRepository)
+		private driveFoldersRepository: DriveFoldersRepository,
+
+		@Inject(DI.driveFilesRepository)
+		private driveFilesRepository: DriveFilesRepository,
+	) {
+	}
+
+	public async pack(
+		src: DriveFolder['id'] | DriveFolder,
+		options?: {
+			detail: boolean
+		},
+	): Promise<Packed<'DriveFolder'>> {
+		const opts = Object.assign({
+			detail: false,
+		}, options);
+
+		const folder = typeof src === 'object' ? src : await this.driveFoldersRepository.findOneByOrFail({ id: src });
+
+		return await awaitAll({
+			id: folder.id,
+			createdAt: folder.createdAt.toISOString(),
+			name: folder.name,
+			parentId: folder.parentId,
+
+			...(opts.detail ? {
+				foldersCount: this.driveFoldersRepository.countBy({
+					parentId: folder.id,
+				}),
+				filesCount: this.driveFilesRepository.countBy({
+					folderId: folder.id,
+				}),
+
+				...(folder.parentId ? {
+					parent: this.pack(folder.parentId, {
+						detail: true,
+					}),
+				} : {}),
+			} : {}),
+		});
+	}
+}
+