View difference between Paste ID: HAxeWuC1 and u3bc1igv

-	// config/passport.js
+
 var LocalStrategy = require('passport-local').Strategy
-// =========================================================================
+
-// LOCAL LOGIN =============================================================
+
-// =========================================================================
+
-// we are using named strategies since we have one for login and one for signup
+
-// by default, if there was no name, it would just be called 'local'
+
-// config/passport.js
+
 // expose this function to our app using module.exports
 module.exports = function (passport) {
 
   // =========================================================================
   // passport session setup ==================================================
   // =========================================================================
   // required for persistent login sessions
   // passport needs ability to serialize and unserialize users out of session
 
   // used to serialize the user for the session
   passport.serializeUser(function (user, done) {
     done(null, user.id);
   });
 
   // used to deserialize the user
   passport.deserializeUser(function (id, done) {
     const connection = mysql.createConnection(dbConfig)
     connection.connect(function(err) {
       if (err) return done(err)
       connection.query('SELECT * FROM users WHERE id = ?', [id], function (err, results) {
         if (err) return done(err)
         connection.end()
         done(null, results.length === 1 ? results[0] : null);
       });
     })
   });
 
   passport.use('local-login', new LocalStrategy({
       usernameField : 'username',
       passwordField : 'password',
       passReqToCallback: true // allows us to pass back the entire request to the callback
     },
     function (req, username, password, done) { // callback with username and password from our form
         req.getConnection(function(err, connection) {
           if (err)  {
             console.log('Mysql connection has not been established ', err)
             return done(err);
           }
 
           connection.query('SELECT * FROM users WHERE username = ?', [username], function(err, results) {
             if (err) {
               console.log('Sql query error ' + err)
               return done(err);
             }
 
             if(!results || results.length !== 1) {
               console.log('User not found ', username)
               return done(null, false, req.flash('loginMessage', 'Invalid credentials #1'))
 
             }
 
             bcrypt.compare(password, results[0].password, function(err, passwordsMatch) {
               if (err || !passwordsMatch) {
                 console.log('Password validation error ', err, passwordsMatch)
                 return done(null, false, req.flash('loginMessage', 'Invalid credentials'));
               }
               // all is well, return successful user
               return done(null, results[0]);
             })
           });
 
         });
     }))
 
 }