// session Middleware
    app.use(session({
        secret: sessionSecretKey,
        resave: false,
        saveUninitialized: true,
        cookie: { secure: true, maxAge : 3600000  }
      }))
      app.use(flash());

      // initialize passport
    app.use(passport.initialize());
    app.use(passport.session());
`    app.use(cors());

const LocalStrategy = require('passport-local').Strategy;
    passport.serializeUser((user, done) => {
        console.log('serialize user :',user._id);
        done(null, user._id);
        console.log("it is also calling!!")
    });

    passport.deserializeUser((_id, done) => {
        console.log('deserialise user :');
        userModel.findById(_id).then((user) => {
            done(null, user);
        });
    });
passport.use(new LocalStrategy({
  usernameField: 'email',
  passwordField: 'password'
},
function(username, password, done) {
  userMethods.localLogin(username,password,done);
}
));

localLogin : async (email,password,done) => {
    await userModel.findOne({ email },async (err,verifiedEmailUser) => {
        if(err) {
            console.log('err 1st :', err);
            done(null,false,{message : err});
        }else{
            if(!verifiedEmailUser) {
                console.log('email verification failed');
                done(null,false,{message:"no user found with this email"});
            }else{
                console.log("email good");
                var UserPassword = verifiedEmailUser.password;
                await bcrypt.compare(password,UserPassword,(err,result) => {
                    if(err) {
                        console.log("err in compare",err)
                        done(null,false,{message:err})
                    }else{
                        if(!result) {
                            console.log("passsword fail")
                            done(null,false,{message:"Password invalid"})
                        }else{
                            console.log("all good")
                            done(null,verifiedEmailUser);
                        }

                    }

                })
            }
        }

    })
}