Initial auth library commmit

lib/utils/auth.ts

@@ -0,0 +1,14 @@
+import Auth from '../model/auth';
+import { AuthDocument, AuthModel, AuthPrivate } from '../schema/auth';
+import { sign } from './jwt';
+
+export const getAuthenticationBundle = async (username: string, password: string) => {
+    const auth = await Auth.findByUsername(username).catch();
+    const isAuthenticated = !!auth && (auth as AuthModel).authenticate(password);
+    const token = isAuthenticated ? (auth as AuthModel).getToken() : sign();
+    const record = isAuthenticated ? (auth as AuthPrivate).record : null;
+    return {
+        record,
+        token,
+    };
+};