feat: make possible to export favorited notes

#9331

7 files changed, 216 insertions, 2 deletions

diff --git a/packages/backend/src/core/QueueService.ts b/packages/backend/src/core/QueueService.ts
index 7956a3a8f9..4bf41e0ac1 100644
--- a/packages/backend/src/core/QueueService.ts
+++ b/packages/backend/src/core/QueueService.ts
@@ -5,10 +5,10 @@ import type { DriveFile } from '@/models/entities/DriveFile.js';
 import type { Webhook, webhookEventTypes } from '@/models/entities/Webhook.js';
 import type { Config } from '@/config.js';
 import { DI } from '@/di-symbols.js';
+import { bindThis } from '@/decorators.js';
 import type { DbQueue, DeliverQueue, EndedPollNotificationQueue, InboxQueue, ObjectStorageQueue, SystemQueue, WebhookDeliverQueue } from './QueueModule.js';
 import type { ThinUser } from '../queue/types.js';
 import type httpSignature from '@peertube/http-signature';
-import { bindThis } from '@/decorators.js';
 
 @Injectable()
 export class QueueService {
@@ -98,6 +98,16 @@ export class QueueService {
 	}
 
 	@bindThis
+	public createExportFavoritesJob(user: ThinUser) {
+		return this.dbQueue.add('exportFavorites', {
+			user: user,
+		}, {
+			removeOnComplete: true,
+			removeOnFail: true,
+		});
+	}
+
+	@bindThis
 	public createExportFollowingJob(user: ThinUser, excludeMuting = false, excludeInactive = false) {
 		return this.dbQueue.add('exportFollowing', {
 			user: user,
diff --git a/packages/backend/src/queue/DbQueueProcessorsService.ts b/packages/backend/src/queue/DbQueueProcessorsService.ts
index e5568ab9bf..df337ad810 100644
--- a/packages/backend/src/queue/DbQueueProcessorsService.ts
+++ b/packages/backend/src/queue/DbQueueProcessorsService.ts
@@ -2,6 +2,7 @@ import { Inject, Injectable } from '@nestjs/common';
 import type { DbJobData } from '@/queue/types.js';
 import { DI } from '@/di-symbols.js';
 import type { Config } from '@/config.js';
+import { bindThis } from '@/decorators.js';
 import { DeleteDriveFilesProcessorService } from './processors/DeleteDriveFilesProcessorService.js';
 import { ExportCustomEmojisProcessorService } from './processors/ExportCustomEmojisProcessorService.js';
 import { ExportNotesProcessorService } from './processors/ExportNotesProcessorService.js';
@@ -15,8 +16,8 @@ import { ImportBlockingProcessorService } from './processors/ImportBlockingProce
 import { ImportUserListsProcessorService } from './processors/ImportUserListsProcessorService.js';
 import { ImportCustomEmojisProcessorService } from './processors/ImportCustomEmojisProcessorService.js';
 import { DeleteAccountProcessorService } from './processors/DeleteAccountProcessorService.js';
+import { ExportFavoritesProcessorService } from './processors/ExportFavoritesProcessorService.js';
 import type Bull from 'bull';
-import { bindThis } from '@/decorators.js';
 
 @Injectable()
 export class DbQueueProcessorsService {
@@ -27,6 +28,7 @@ export class DbQueueProcessorsService {
 		private deleteDriveFilesProcessorService: DeleteDriveFilesProcessorService,
 		private exportCustomEmojisProcessorService: ExportCustomEmojisProcessorService,
 		private exportNotesProcessorService: ExportNotesProcessorService,
+		private exportFavoritesProcessorService: ExportFavoritesProcessorService,
 		private exportFollowingProcessorService: ExportFollowingProcessorService,
 		private exportMutingProcessorService: ExportMutingProcessorService,
 		private exportBlockingProcessorService: ExportBlockingProcessorService,
@@ -45,6 +47,7 @@ export class DbQueueProcessorsService {
 		q.process('deleteDriveFiles', (job, done) => this.deleteDriveFilesProcessorService.process(job, done));
 		q.process('exportCustomEmojis', (job, done) => this.exportCustomEmojisProcessorService.process(job, done));
 		q.process('exportNotes', (job, done) => this.exportNotesProcessorService.process(job, done));
+		q.process('exportFavorites', (job, done) => this.exportFavoritesProcessorService.process(job, done));
 		q.process('exportFollowing', (job, done) => this.exportFollowingProcessorService.process(job, done));
 		q.process('exportMuting', (job, done) => this.exportMutingProcessorService.process(job, done));
 		q.process('exportBlocking', (job, done) => this.exportBlockingProcessorService.process(job, done));
diff --git a/packages/backend/src/queue/QueueProcessorModule.ts b/packages/backend/src/queue/QueueProcessorModule.ts
index 620296498c..034e9cc5a5 100644
--- a/packages/backend/src/queue/QueueProcessorModule.ts
+++ b/packages/backend/src/queue/QueueProcessorModule.ts
@@ -30,6 +30,7 @@ import { ImportUserListsProcessorService } from './processors/ImportUserListsPro
 import { ResyncChartsProcessorService } from './processors/ResyncChartsProcessorService.js';
 import { TickChartsProcessorService } from './processors/TickChartsProcessorService.js';
 import { AggregateRetentionProcessorService } from './processors/AggregateRetentionProcessorService.js';
+import { ExportFavoritesProcessorService } from './processors/ExportFavoritesProcessorService.js';
 
 @Module({
 	imports: [
@@ -45,6 +46,7 @@ import { AggregateRetentionProcessorService } from './processors/AggregateRetent
 		DeleteDriveFilesProcessorService,
 		ExportCustomEmojisProcessorService,
 		ExportNotesProcessorService,
+		ExportFavoritesProcessorService,
 		ExportFollowingProcessorService,
 		ExportMutingProcessorService,
 		ExportBlockingProcessorService,
diff --git a/packages/backend/src/queue/processors/ExportFavoritesProcessorService.ts b/packages/backend/src/queue/processors/ExportFavoritesProcessorService.ts
new file mode 100644
index 0000000000..3820705e5c
--- /dev/null
+++ b/packages/backend/src/queue/processors/ExportFavoritesProcessorService.ts
@@ -0,0 +1,162 @@
+import * as fs from 'node:fs';
+import { Inject, Injectable } from '@nestjs/common';
+import { IsNull, MoreThan } from 'typeorm';
+import { format as dateFormat } from 'date-fns';
+import { DI } from '@/di-symbols.js';
+import type { NoteFavorite, NoteFavoritesRepository, NotesRepository, PollsRepository, User, UsersRepository } from '@/models/index.js';
+import type { Config } from '@/config.js';
+import type Logger from '@/logger.js';
+import { DriveService } from '@/core/DriveService.js';
+import { createTemp } from '@/misc/create-temp.js';
+import type { Poll } from '@/models/entities/Poll.js';
+import type { Note } from '@/models/entities/Note.js';
+import { bindThis } from '@/decorators.js';
+import { QueueLoggerService } from '../QueueLoggerService.js';
+import type Bull from 'bull';
+import type { DbUserJobData } from '../types.js';
+
+@Injectable()
+export class ExportFavoritesProcessorService {
+	private logger: Logger;
+
+	constructor(
+		@Inject(DI.config)
+		private config: Config,
+
+		@Inject(DI.usersRepository)
+		private usersRepository: UsersRepository,
+
+		@Inject(DI.pollsRepository)
+		private pollsRepository: PollsRepository,
+
+		@Inject(DI.notesRepository)
+		private notesRepository: NotesRepository,
+
+		@Inject(DI.noteFavoritesRepository)
+		private noteFavoritesRepository: NoteFavoritesRepository,
+
+		private driveService: DriveService,
+		private queueLoggerService: QueueLoggerService,
+	) {
+		this.logger = this.queueLoggerService.logger.createSubLogger('export-favorites');
+	}
+
+	@bindThis
+	public async process(job: Bull.Job<DbUserJobData>, done: () => void): Promise<void> {
+		this.logger.info(`Exporting favorites of ${job.data.user.id} ...`);
+
+		const user = await this.usersRepository.findOneBy({ id: job.data.user.id });
+		if (user == null) {
+			done();
+			return;
+		}
+
+		// Create temp file
+		const [path, cleanup] = await createTemp();
+
+		this.logger.info(`Temp file is ${path}`);
+
+		try {
+			const stream = fs.createWriteStream(path, { flags: 'a' });
+
+			const write = (text: string): Promise<void> => {
+				return new Promise<void>((res, rej) => {
+					stream.write(text, err => {
+						if (err) {
+							this.logger.error(err);
+							rej(err);
+						} else {
+							res();
+						}
+					});
+				});
+			};
+
+			await write('[');
+
+			let exportedFavoritesCount = 0;
+			let cursor: NoteFavorite['id'] | null = null;
+
+			while (true) {
+				const favorites = await this.noteFavoritesRepository.find({
+					where: {
+						userId: user.id,
+						...(cursor ? { id: MoreThan(cursor) } : {}),
+					},
+					take: 100,
+					order: {
+						id: 1,
+					},
+					relations: ['note', 'note.user'],
+				}) as (NoteFavorite & { note: Note & { user: User } })[];
+
+				if (favorites.length === 0) {
+					job.progress(100);
+					break;
+				}
+
+				cursor = favorites[favorites.length - 1].id;
+
+				for (const favorite of favorites) {
+					let poll: Poll | undefined;
+					if (favorite.note.hasPoll) {
+						poll = await this.pollsRepository.findOneByOrFail({ noteId: favorite.note.id });
+					}
+					const content = JSON.stringify(serialize(favorite, poll));
+					const isFirst = exportedFavoritesCount === 0;
+					await write(isFirst ? content : ',\n' + content);
+					exportedFavoritesCount++;
+				}
+
+				const total = await this.noteFavoritesRepository.countBy({
+					userId: user.id,
+				});
+
+				job.progress(exportedFavoritesCount / total);
+			}
+
+			await write(']');
+
+			stream.end();
+			this.logger.succ(`Exported to: ${path}`);
+
+			const fileName = 'favorites-' + dateFormat(new Date(), 'yyyy-MM-dd-HH-mm-ss') + '.json';
+			const driveFile = await this.driveService.addFile({ user, path, name: fileName, force: true });
+
+			this.logger.succ(`Exported to: ${driveFile.id}`);
+		} finally {
+			cleanup();
+		}
+
+		done();
+	}
+}
+
+function serialize(favorite: NoteFavorite & { note: Note & { user: User } }, poll: Poll | null = null): Record<string, unknown> {
+	return {
+		id: favorite.id,
+		createdAt: favorite.createdAt,
+		note: {
+			id: favorite.note.id,
+			text: favorite.note.text,
+			createdAt: favorite.note.createdAt,
+			fileIds: favorite.note.fileIds,
+			replyId: favorite.note.replyId,
+			renoteId: favorite.note.renoteId,
+			poll: poll,
+			cw: favorite.note.cw,
+			visibility: favorite.note.visibility,
+			visibleUserIds: favorite.note.visibleUserIds,
+			localOnly: favorite.note.localOnly,
+			uri: favorite.note.uri,
+			url: favorite.note.url,
+			user: {
+				id: favorite.note.user.id,
+				name: favorite.note.user.name,
+				username: favorite.note.user.username,
+				host: favorite.note.user.host,
+				uri: favorite.note.user.uri,
+			},
+		},
+	};
+}
diff --git a/packages/backend/src/server/api/EndpointsModule.ts b/packages/backend/src/server/api/EndpointsModule.ts
index 1f96647e7d..18ba16ac79 100644
--- a/packages/backend/src/server/api/EndpointsModule.ts
+++ b/packages/backend/src/server/api/EndpointsModule.ts
@@ -176,6 +176,7 @@ import * as ep___i_exportBlocking from './endpoints/i/export-blocking.js';
 import * as ep___i_exportFollowing from './endpoints/i/export-following.js';
 import * as ep___i_exportMute from './endpoints/i/export-mute.js';
 import * as ep___i_exportNotes from './endpoints/i/export-notes.js';
+import * as ep___i_exportFavorites from './endpoints/i/export-favorites.js';
 import * as ep___i_exportUserLists from './endpoints/i/export-user-lists.js';
 import * as ep___i_favorites from './endpoints/i/favorites.js';
 import * as ep___i_gallery_likes from './endpoints/i/gallery/likes.js';
@@ -495,6 +496,7 @@ const $i_exportBlocking: Provider = { provide: 'ep:i/export-blocking', useClass:
 const $i_exportFollowing: Provider = { provide: 'ep:i/export-following', useClass: ep___i_exportFollowing.default };
 const $i_exportMute: Provider = { provide: 'ep:i/export-mute', useClass: ep___i_exportMute.default };
 const $i_exportNotes: Provider = { provide: 'ep:i/export-notes', useClass: ep___i_exportNotes.default };
+const $i_exportFavorites: Provider = { provide: 'ep:i/export-favorites', useClass: ep___i_exportFavorites.default };
 const $i_exportUserLists: Provider = { provide: 'ep:i/export-user-lists', useClass: ep___i_exportUserLists.default };
 const $i_favorites: Provider = { provide: 'ep:i/favorites', useClass: ep___i_favorites.default };
 const $i_gallery_likes: Provider = { provide: 'ep:i/gallery/likes', useClass: ep___i_gallery_likes.default };
@@ -818,6 +820,7 @@ const $retention: Provider = { provide: 'ep:retention', useClass: ep___retention
 		$i_exportFollowing,
 		$i_exportMute,
 		$i_exportNotes,
+		$i_exportFavorites,
 		$i_exportUserLists,
 		$i_favorites,
 		$i_gallery_likes,
@@ -1135,6 +1138,7 @@ const $retention: Provider = { provide: 'ep:retention', useClass: ep___retention
 		$i_exportFollowing,
 		$i_exportMute,
 		$i_exportNotes,
+		$i_exportFavorites,
 		$i_exportUserLists,
 		$i_favorites,
 		$i_gallery_likes,
diff --git a/packages/backend/src/server/api/endpoints.ts b/packages/backend/src/server/api/endpoints.ts
index e8dc5abfa1..a09ffa832c 100644
--- a/packages/backend/src/server/api/endpoints.ts
+++ b/packages/backend/src/server/api/endpoints.ts
@@ -175,6 +175,7 @@ import * as ep___i_exportBlocking from './endpoints/i/export-blocking.js';
 import * as ep___i_exportFollowing from './endpoints/i/export-following.js';
 import * as ep___i_exportMute from './endpoints/i/export-mute.js';
 import * as ep___i_exportNotes from './endpoints/i/export-notes.js';
+import * as ep___i_exportFavorites from './endpoints/i/export-favorites.js';
 import * as ep___i_exportUserLists from './endpoints/i/export-user-lists.js';
 import * as ep___i_favorites from './endpoints/i/favorites.js';
 import * as ep___i_gallery_likes from './endpoints/i/gallery/likes.js';
@@ -492,6 +493,7 @@ const eps = [
 	['i/export-following', ep___i_exportFollowing],
 	['i/export-mute', ep___i_exportMute],
 	['i/export-notes', ep___i_exportNotes],
+	['i/export-favorites', ep___i_exportFavorites],
 	['i/export-user-lists', ep___i_exportUserLists],
 	['i/favorites', ep___i_favorites],
 	['i/gallery/likes', ep___i_gallery_likes],
diff --git a/packages/backend/src/server/api/endpoints/i/export-favorites.ts b/packages/backend/src/server/api/endpoints/i/export-favorites.ts
new file mode 100644
index 0000000000..b32f39d3e5
--- /dev/null
+++ b/packages/backend/src/server/api/endpoints/i/export-favorites.ts
@@ -0,0 +1,31 @@
+import { Inject, Injectable } from '@nestjs/common';
+import ms from 'ms';
+import { Endpoint } from '@/server/api/endpoint-base.js';
+import { QueueService } from '@/core/QueueService.js';
+
+export const meta = {
+	secure: true,
+	requireCredential: true,
+	limit: {
+		duration: ms('1day'),
+		max: 1,
+	},
+} as const;
+
+export const paramDef = {
+	type: 'object',
+	properties: {},
+	required: [],
+} as const;
+
+// eslint-disable-next-line import/no-default-export
+@Injectable()
+export default class extends Endpoint<typeof meta, typeof paramDef> {
+	constructor(
+		private queueService: QueueService,
+	) {
+		super(meta, paramDef, async (ps, me) => {
+			this.queueService.createExportFavoritesJob(me);
+		});
+	}
+}