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/*
* SPDX-FileCopyrightText: syuilo and misskey-project
* SPDX-License-Identifier: AGPL-3.0-only
*/
import { Inject, Injectable } from '@nestjs/common';
import { DI } from '@/di-symbols.js';
import type { DriveFilesRepository, DriveFoldersRepository } from '@/models/_.js';
import { awaitAll } from '@/misc/prelude/await-all.js';
import type { Packed } from '@/misc/json-schema.js';
import type { } from '@/models/Blocking.js';
import type { MiDriveFolder } from '@/models/DriveFolder.js';
import { bindThis } from '@/decorators.js';
import { IdService } from '@/core/IdService.js';
import { In } from 'typeorm';
import { uniqueByKey } from '@/misc/unique-by-key.js';
import { splitIdAndObjects } from '@/misc/split-id-and-objects.js';
@Injectable()
export class DriveFolderEntityService {
constructor(
@Inject(DI.driveFoldersRepository)
private driveFoldersRepository: DriveFoldersRepository,
@Inject(DI.driveFilesRepository)
private driveFilesRepository: DriveFilesRepository,
private idService: IdService,
) {
}
@bindThis
public async pack(
src: MiDriveFolder['id'] | MiDriveFolder,
options?: {
detail: boolean
},
hint?: {
folderMap?: Map<string, MiDriveFolder>;
foldersCountMap?: Map<string, number> | null;
filesCountMap?: Map<string, number> | null;
parentPacker?: (id: string) => Promise<Packed<'DriveFolder'>>;
},
): Promise<Packed<'DriveFolder'>> {
const opts = Object.assign({
detail: false,
}, options);
const folder = typeof src === 'object'
? src
: hint?.folderMap?.get(src) ?? await this.driveFoldersRepository.findOneByOrFail({ id: src });
return await awaitAll({
id: folder.id,
createdAt: this.idService.parse(folder.id).date.toISOString(),
name: folder.name,
parentId: folder.parentId,
...(opts.detail ? {
foldersCount: hint?.foldersCountMap?.get(folder.id)
?? this.driveFoldersRepository.countBy({
parentId: folder.id,
}),
filesCount: hint?.filesCountMap?.get(folder.id)
?? this.driveFilesRepository.countBy({
folderId: folder.id,
}),
...(folder.parentId ? {
parent: hint?.parentPacker
? hint.parentPacker(folder.parentId)
: this.pack(folder.parentId, { detail: true }, hint),
} : {}),
} : {}),
});
}
public async packMany(
src: Array<MiDriveFolder['id'] | MiDriveFolder>,
options?: {
detail: boolean
},
): Promise<Array<Packed<'DriveFolder'>>> {
/**
* 重複を除去しつつ、必要なDriveFolderオブジェクトをすべて取得する
*/
const collectUniqueObjects = async (src: Array<MiDriveFolder['id'] | MiDriveFolder>) => {
const uniqueSrc = uniqueByKey(
src,
(s) => typeof s === 'string' ? s : s.id,
);
const { ids, objects } = splitIdAndObjects(uniqueSrc);
const uniqueObjects = new Map<string, MiDriveFolder>(objects.map(s => [s.id, s]));
const needsFetchIds = ids.filter(id => !uniqueObjects.has(id));
if (needsFetchIds.length > 0) {
const fetchedObjects = await this.driveFoldersRepository.find({
where: {
id: In(needsFetchIds),
},
});
for (const obj of fetchedObjects) {
uniqueObjects.set(obj.id, obj);
}
}
return uniqueObjects;
};
/**
* 親フォルダーを再帰的に収集する
*/
const collectAncestors = async (folderMap: Map<string, MiDriveFolder>) => {
for (;;) {
const parentIds = new Set<string>();
for (const folder of folderMap.values()) {
if (folder.parentId != null && !folderMap.has(folder.parentId)) {
parentIds.add(folder.parentId);
}
}
if (parentIds.size === 0) break;
const fetchedParents = await this.driveFoldersRepository.find({
where: {
id: In([...parentIds]),
},
});
if (fetchedParents.length === 0) break;
for (const parent of fetchedParents) {
folderMap.set(parent.id, parent);
}
}
};
const opts = Object.assign({
detail: false,
}, options);
const folderMap = await collectUniqueObjects(src);
let foldersCountMap: Map<string, number> | null = null;
let filesCountMap: Map<string, number> | null = null;
if (opts.detail) {
await collectAncestors(folderMap);
const ids = [...folderMap.keys()];
if (ids.length > 0) {
const folderCounts = await this.driveFoldersRepository.createQueryBuilder('folder')
.select('folder.parentId', 'parentId')
.addSelect('COUNT(*)', 'count')
.where('folder.parentId IN (:...ids)', { ids })
.groupBy('folder.parentId')
.getRawMany<{ parentId: string; count: string }>();
const fileCounts = await this.driveFilesRepository.createQueryBuilder('file')
.select('file.folderId', 'folderId')
.addSelect('COUNT(*)', 'count')
.where('file.folderId IN (:...ids)', { ids })
.groupBy('file.folderId')
.getRawMany<{ folderId: string; count: string }>();
foldersCountMap = new Map(folderCounts.map(row => [row.parentId, Number(row.count)]));
filesCountMap = new Map(fileCounts.map(row => [row.folderId, Number(row.count)]));
} else {
foldersCountMap = new Map();
filesCountMap = new Map();
}
}
const packedMap = new Map<string, Promise<Packed<'DriveFolder'>>>();
const packFromId = (id: string): Promise<Packed<'DriveFolder'>> => {
const cached = packedMap.get(id);
if (cached) return cached;
const folder = folderMap.get(id);
if (!folder) {
throw new Error(`DriveFolder not found: ${id}`);
}
const packedPromise = this.pack(folder, options, {
folderMap,
foldersCountMap,
filesCountMap,
parentPacker: packFromId,
});
packedMap.set(id, packedPromise);
return packedPromise;
};
return Promise.all(src.map(s => packFromId(typeof s === 'string' ? s : s.id)));
}
}
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