const passport = require('passport');
const LocalStrategy = require('passport-local').Strategy;

const User = require('../../models/user');

module.exports = function(passport) {
  passport.use(new LocalStrategy(
    {
      usernameField: 'username',
      passwordField: 'password',
    },
    (username, password, done) => {
      User.findOne({ email: username }, (err, user) => {
        if (err) { return done(err); }

        if (!user || !user.validatePassword(password)) {
          return done(null, false, { message: 'Incorrect username or password.' });
        }

        return done(null, user);
      });
    }
  ));
};