From d4ac722f58738e9367e6976342f379fe3d9b5cc5 Mon Sep 17 00:00:00 2001
From: Pitu <heyitspitu@gmail.com>
Date: Sun, 10 May 2020 20:01:37 +0900
Subject: [PATCH] Feature: Migration script from v3 to v4

---
 src/api/databaseMigration.js | 124 +++++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 src/api/databaseMigration.js

diff --git a/src/api/databaseMigration.js b/src/api/databaseMigration.js
new file mode 100644
index 0000000..253ccbd
--- /dev/null
+++ b/src/api/databaseMigration.js
@@ -0,0 +1,124 @@
+const nodePath = require('path');
+const moment = require('moment');
+
+const oldDb = require('knex')({
+	client: 'sqlite3',
+	connection: {
+		filename: nodePath.join(__dirname, '..', '..', 'db')
+	},
+	useNullAsDefault: true
+});
+
+const newDb = require('knex')({
+	client: 'sqlite3',
+	connection: {
+		filename: nodePath.join(__dirname, '..', '..', 'database.sqlite')
+	},
+	postProcessResponse: result => {
+		const booleanFields = [
+			'enabled',
+			'enableDownload',
+			'isAdmin'
+		];
+
+		const processResponse = row => {
+			Object.keys(row).forEach(key => {
+				if (booleanFields.includes(key)) {
+					if (row[key] === 0) row[key] = false;
+					else if (row[key] === 1) row[key] = true;
+				}
+			});
+			return row;
+		};
+
+		if (Array.isArray(result)) return result.map(row => processResponse(row));
+		if (typeof result === 'object') return processResponse(result);
+		return result;
+	},
+	useNullAsDefault: true
+});
+
+const start = async () => {
+	console.log('Starting migration, this may take a few minutes...'); // Because I half assed it
+	console.log('Please do NOT kill the process. Wait for it to finish.');
+
+	const users = await oldDb.table('users').where('username', '<>', 'root');
+	for (const user of users) {
+		const now = moment.utc().toDate();
+		const userToInsert = {
+			id: user.id,
+			username: user.username,
+			password: user.password,
+			enabled: user.enabled == 1 ? true : false,
+			isAdmin: false,
+			apiKey: user.token, // Is this the best way to do it?
+			passwordEditedAt: now,
+			apiKeyEditedAt: now,
+			createdAt: now,
+			editedAt: now
+		};
+		await newDb.table('users').insert(userToInsert);
+	}
+	console.log('Finished migrating users...');
+
+	const albums = await oldDb.table('albums');
+	for (const album of albums) {
+		const now = moment.utc().toDate();
+		const albumToInsert = {
+			id: album.id,
+			userId: album.userid,
+			name: album.name,
+			zippedAt: album.zipGeneratedAt ? moment.unix(album.zipGeneratedAt).toDate() : null,
+			createdAt: moment.unix(album.timestamp).toDate(),
+			editedAt: moment.unix(album.editedAt).toDate()
+		};
+		const linkToInsert = {
+			userId: album.userid,
+			albumId: album.id,
+			identifier: album.identifier,
+			views: 0,
+			enabled: album.enabled == 1 ? true : false,
+			enableDownload: true,
+			createdAt: now,
+			editedAt: now
+		};
+		await newDb.table('albums').insert(albumToInsert);
+		const insertedId = await newDb.table('links').insert(linkToInsert);
+		await newDb.table('albumsLinks').insert({
+			albumId: album.id,
+			linkId: insertedId[0]
+		});
+	}
+	console.log('Finished migrating albums...');
+
+	const files = await oldDb.table('files');
+	const filesToInsert = [];
+	const albumsFilesToInsert = [];
+	for (const file of files) {
+		const fileToInsert = {
+			id: file.id,
+			userId: file.userid,
+			name: file.name,
+			original: file.original,
+			type: file.type,
+			size: file.size,
+			hash: file.hash,
+			ip: file.ip,
+			createdAt: moment.unix(file.timestamp).toDate(),
+			editedAt: moment.unix(file.timestamp).toDate()
+		};
+		filesToInsert.push(fileToInsert);
+		albumsFilesToInsert.push({
+			albumId: file.albumid,
+			fileId: file.id
+		});
+	}
+	await newDb.batchInsert('files', filesToInsert, 20);
+	await newDb.batchInsert('albumsFiles', albumsFilesToInsert, 20);
+	console.log('Finished migrating files...');
+
+	console.log('Finished migrating everything. ');
+	process.exit(0);
+};
+
+start();