implemented comments

backend/src/utils/auth.ts

@@ -1,10 +1,22 @@
+import express from 'express';
+import passport from 'passport';
 import { AuthData } from '../interfaces/middleware';
 import {
+    AuthProvider,
     User,
     ServiceAccount,
     ServiceTokenData,
-    ServiceToken
 } from '../models';
+import { createToken } from '../helpers/auth';
+import {
+    getClientIdGoogle,
+    getClientSecretGoogle,
+    getJwtProviderAuthLifetime,
+    getJwtProviderAuthSecret
+} from '../config';
+
+// eslint-disable-next-line @typescript-eslint/no-var-requires
+const GoogleStrategy = require('passport-google-oidc');
 
 // TODO: find a more optimal folder structure to store these types of functions
 
@@ -48,7 +60,47 @@ const getAuthDataPayloadUserObj = (authData: AuthData) => {
     }
 }
 
+const initializePassport = async () => {
+    const googleClientSecret = await getClientSecretGoogle();
+    const googleClientId = await getClientIdGoogle();
+
+    passport.use(new GoogleStrategy({
+        passReqToCallback: true,
+        clientID: googleClientId,
+        clientSecret: googleClientSecret,
+        callbackURL: '/api/v1/oauth/callback/google',
+      }, async (req: express.Request, issuer: any, profile: any, cb: any) => {
+        const email = profile.emails[0].value;
+        let user = await User.findOne({
+          authProvider: AuthProvider.GOOGLE,
+          authId: profile.id,
+        })
+      
+        if (!user) {
+          user = await new User({
+            email,
+            authProvider: AuthProvider.GOOGLE,
+            authId: profile.id,
+          }).save();
+        }
+      
+        const providerAuthToken = createToken({
+          payload: {
+            userId: user._id.toString(),
+            email: user.email,
+            authProvider: user.authProvider,
+          },
+          expiresIn: await getJwtProviderAuthLifetime(),
+          secret: await getJwtProviderAuthSecret(),
+        });
+      
+        req.providerAuthToken = providerAuthToken;
+        cb(null, profile);
+      }));
+}
+
 export {
     getAuthDataPayloadIdObj,
-    getAuthDataPayloadUserObj
-}
+    getAuthDataPayloadUserObj,
+    initializePassport,
+}