Implemented Oauth

backend/src/routes/auth.js

@@ -1,11 +1,30 @@
-import express from 'express';
-import { applicantLogin, logout, validatorLogin } from '../controllers/authControllers.js';
+import express from "express";
+import {
+  applicantLogin,
+  logout,
+  validatorLogin,
+  googleAuthStart,
+  googleAuthCallback,
+} from "../controllers/authControllers.js";
+import passport from "../services/passportService.js";
 
 const router = express.Router();
 
-router.post('/applicant-login', applicantLogin);
-router.post('/validator-login', validatorLogin);
+router.post("/applicant-login", applicantLogin);
+//this route is for google oauth, this one route will handle both applicantLogic and validatorLo
+// we will be passing the designation as a URL parameter ("validator" or "applicant") and it will be passed as state through OAuth
+router.get("/auth/oauth/:designation", googleAuthStart);
+//this will be the oauth callback Route
+router.get(
+  "/auth/google/callback",
+  passport.authenticate("google", {
+    failureRedirect: "http://localhost:5173/?error=auth_failed",
+  }),
+  googleAuthCallback,
+);
 
-router.get('/logout', logout)
+router.post("/validator", validatorLogin);
 
-export default router;
+router.get("/logout", logout);
+
+export default router;