Implement authentication using Passport.js

config/auth/localStrat.ts

@@ -0,0 +1,24 @@
+import findUserByUsername from '@/services/user/findUserByUsername';
+import Local from 'passport-local';
+import ServerError from '../util/ServerError';
+import { validatePassword } from './passwordFns';
+
+const localStrat = new Local.Strategy(async (username, password, done) => {
+  try {
+    const user = await findUserByUsername(username);
+    if (!user) {
+      throw new ServerError('Username or password is incorrect.', 401);
+    }
+
+    const isValidLogin = await validatePassword(user.hash, password);
+    if (!isValidLogin) {
+      throw new ServerError('Username or password is incorrect.', 401);
+    }
+
+    done(null, { id: user.id, username: user.username });
+  } catch (error) {
+    done(error);
+  }
+});
+
+export default localStrat;