Create data directory if it doesn't exist.

Previously the application would crash if the the data directory
(~/.local/share/go-music/) was not created, since better-sqlite3 expects
the directory to be there when creating the database file.

Changed created config directory permissions to disallow public access.

src/api/index.ts

@@ -1,5 +1,6 @@
 /* 3rd party imports */
 import path from 'path';
+import fs from 'fs';
 import SQLite3 from 'better-sqlite3';
 import express from 'express';
 import { ApolloServer } from 'apollo-server-express';
@@ -39,6 +40,7 @@ class Api {
 		this.config = config;
 
 		try {
+			if (!fs.existsSync(this.config.dataDirectory)) fs.mkdirSync(this.config.dataDirectory, '0700');
 			this.db = new SQLite3(path.join(this.config.dataDirectory, 'go-music.db'));
 		} catch(err) {
 			Constants.FATAL_ERROR(`Error creating SQLite3 DB: ${err}`);

src/config.ts

@@ -51,7 +51,7 @@ export const getOrSetConfig = async function(configPath: string, config: ConfigS
 	};
 	const dirCreate = async function(): Promise<void> {
 		const configDir = path.dirname(configPath);
-		return fs.promises.mkdir(configDir, '0755')
+		return fs.promises.mkdir(configDir, '0750')
 			.catch(() => { throw `Could not create ${configDir}` });
 	};
 	const openFile = async function(): Promise<ConfigSchema> {