整理した

src/models/drive-file.ts

@@ -0,0 +1,113 @@
+import * as mongodb from 'mongodb';
+import deepcopy = require('deepcopy');
+import { pack as packFolder } from './drive-folder';
+import config from '../conf';
+import monkDb, { nativeDbConn } from '../db/mongodb';
+
+const DriveFile = monkDb.get<IDriveFile>('driveFiles.files');
+
+export default DriveFile;
+
+const getGridFSBucket = async (): Promise<mongodb.GridFSBucket> => {
+	const db = await nativeDbConn();
+	const bucket = new mongodb.GridFSBucket(db, {
+		bucketName: 'driveFiles'
+	});
+	return bucket;
+};
+
+export { getGridFSBucket };
+
+export type IDriveFile = {
+	_id: mongodb.ObjectID;
+	uploadDate: Date;
+	md5: string;
+	filename: string;
+	contentType: string;
+	metadata: {
+		properties: any;
+		userId: mongodb.ObjectID;
+		folderId: mongodb.ObjectID;
+	}
+};
+
+export function validateFileName(name: string): boolean {
+	return (
+		(name.trim().length > 0) &&
+		(name.length <= 200) &&
+		(name.indexOf('\\') === -1) &&
+		(name.indexOf('/') === -1) &&
+		(name.indexOf('..') === -1)
+	);
+}
+
+/**
+ * Pack a drive file for API response
+ *
+ * @param {any} file
+ * @param {any} options?
+ * @return {Promise<any>}
+ */
+export const pack = (
+	file: any,
+	options?: {
+		detail: boolean
+	}
+) => new Promise<any>(async (resolve, reject) => {
+	const opts = Object.assign({
+		detail: false
+	}, options);
+
+	let _file: any;
+
+	// Populate the file if 'file' is ID
+	if (mongodb.ObjectID.prototype.isPrototypeOf(file)) {
+		_file = await DriveFile.findOne({
+			_id: file
+		});
+	} else if (typeof file === 'string') {
+		_file = await DriveFile.findOne({
+			_id: new mongodb.ObjectID(file)
+		});
+	} else {
+		_file = deepcopy(file);
+	}
+
+	if (!_file) return reject('invalid file arg.');
+
+	// rendered target
+	let _target: any = {};
+
+	_target.id = _file._id;
+	_target.createdAt = _file.uploadDate;
+	_target.name = _file.filename;
+	_target.type = _file.contentType;
+	_target.datasize = _file.length;
+	_target.md5 = _file.md5;
+
+	_target = Object.assign(_target, _file.metadata);
+
+	_target.url = `${config.drive_url}/${_target.id}/${encodeURIComponent(_target.name)}`;
+
+	if (_target.properties == null) _target.properties = {};
+
+	if (opts.detail) {
+		if (_target.folderId) {
+			// Populate folder
+			_target.folder = await packFolder(_target.folderId, {
+				detail: true
+			});
+		}
+
+		/*
+		if (_target.tags) {
+			// Populate tags
+			_target.tags = await _target.tags.map(async (tag: any) =>
+				await serializeDriveTag(tag)
+			);
+		}
+		*/
+	}
+
+	resolve(_target);
+});