自分の投稿情報をエクスポートできるように (#4144)

* wip

* 正しいJSONを生成するように

* データを整形

1 files changed, 128 insertions, 0 deletions

diff --git a/src/queue/processors/export-notes.ts b/src/queue/processors/export-notes.ts
new file mode 100644
index 0000000000..52845a5a9c
--- /dev/null
+++ b/src/queue/processors/export-notes.ts
@@ -0,0 +1,128 @@
+import * as bq from 'bee-queue';
+import * as tmp from 'tmp';
+import * as fs from 'fs';
+import * as mongo from 'mongodb';
+
+import { queueLogger } from '../logger';
+import Note, { INote } from '../../models/note';
+import addFile from '../../services/drive/add-file';
+import User from '../../models/user';
+import dateFormat = require('dateformat');
+
+const logger = queueLogger.createSubLogger('export-notes');
+
+export async function exportNotes(job: bq.Job, done: any): Promise<void> {
+	logger.info(`Exporting notes of ${job.data.user._id} ...`);
+
+	const user = await User.findOne({
+		_id: new mongo.ObjectID(job.data.user._id.toString())
+	});
+
+	// Create temp file
+	const [path, cleanup] = await new Promise<[string, any]>((res, rej) => {
+		tmp.file((e, path, fd, cleanup) => {
+			if (e) return rej(e);
+			res([path, cleanup]);
+		});
+	});
+
+	logger.info(`Temp file is ${path}`);
+
+	const stream = fs.createWriteStream(path, { flags: 'a' });
+
+	await new Promise((res, rej) => {
+		stream.write('[', err => {
+			if (err) {
+				logger.error(err);
+				rej(err);
+			} else {
+				res();
+			}
+		});
+	});
+
+	let exportedNotesCount = 0;
+	let ended = false;
+	let cursor: any = null;
+
+	while (!ended) {
+		const notes = await Note.find({
+			userId: user._id,
+			...(cursor ? { _id: { $gt: cursor } } : {})
+		}, {
+			limit: 100,
+			sort: {
+				_id: 1
+			}
+		});
+
+		if (notes.length === 0) {
+			ended = true;
+			job.reportProgress(100);
+			break;
+		}
+
+		cursor = notes[notes.length - 1]._id;
+
+		for (const note of notes) {
+			const content = JSON.stringify(serialize(note));
+			await new Promise((res, rej) => {
+				stream.write(exportedNotesCount === 0 ? content : ',\n' + content, err => {
+					if (err) {
+						logger.error(err);
+						rej(err);
+					} else {
+						res();
+					}
+				});
+			});
+			exportedNotesCount++;
+		}
+
+		const total = await Note.count({
+			userId: user._id,
+		});
+
+		job.reportProgress(exportedNotesCount / total);
+	}
+
+	await new Promise((res, rej) => {
+		stream.write(']', err => {
+			if (err) {
+				logger.error(err);
+				rej(err);
+			} else {
+				res();
+			}
+		});
+	});
+
+	stream.end();
+	logger.succ(`Exported to: ${path}`);
+
+	const fileName = dateFormat(new Date(), 'yyyy-mm-dd-HH-MM-ss') + '.json';
+	const driveFile = await addFile(user, path, fileName);
+
+	logger.succ(`Exported to: ${driveFile._id}`);
+	cleanup();
+	done();
+}
+
+function serialize(note: INote): any {
+	return {
+		id: note._id,
+		text: note.text,
+		createdAt: note.createdAt,
+		fileIds: note.fileIds,
+		replyId: note.replyId,
+		renoteId: note.renoteId,
+		poll: note.poll,
+		cw: note.cw,
+		viaMobile: note.viaMobile,
+		visibility: note.visibility,
+		visibleUserIds: note.visibleUserIds,
+		appId: note.appId,
+		geo: note.geo,
+		localOnly: note.localOnly
+	};
+}