Add connection to MySQL database

src/helpers/DatabaseHelper.ts

@@ -0,0 +1,41 @@
+import { createConnection, Connection } from "mysql";
+import { conf } from "./ConfigHelper";
+
+/**
+ * Database helper
+ * 
+ * @author Pierre HUBERT
+ */
+
+export class DatabaseHelper {
+
+	private static connection : Connection;
+
+	/**
+	 * Connect to database
+	 */
+	static async connect() {
+		this.connection = createConnection({
+			host: conf().database.host,
+			user: conf().database.user,
+			password: conf().database.password,
+			database: conf().database.dbName
+		});
+
+		await new Promise((resolve, reject) => {
+			this.connection.connect(err => {
+
+				if(err) {
+					console.error("Could not connect to database !");
+					console.error(err);
+					reject(err);
+					return;
+				}
+
+				console.info("Connected to database.");
+				resolve();
+			});
+		})
+	}
+
+}