const _ = require('lodash');
const passport = require('passport');
const { Strategy: LocalStrategy } = require('passport-local');
const { Strategy: JWTStrategy} = require('passport-jwt');

const models = require('./models');
const securityHelper = require('../helpers/security.helper');


passport.serializeUser((user, done) => {
    done(null, user.id);
});

passport.deserializeUser((id, done) => {
    models.User.findById(id, (err, user) => {
        done(err, user);
    });
});

/**
 * Sign in using Email and Password.
 */
const localOptions = {
    usernameField: 'email',
    passwordField: 'password'
}

passport.use('local', new LocalStrategy(localOptions, async (email, password, done) => {
    try {
        const user = await models.User.findOne({
            where: { email },
        });

        if (_.isNull(user)) {
            return done(null, false, { message: 'User not found' })
        } else {
            const isPasswordValid = await user.comparePassword(password);

            if (!isPasswordValid) {
                return done(null, false, { message: 'Wrong Password' })
            } else {
                delete user.password;
                return done(null, user, { message: 'Logged in Successfully' });
            }
        }
    } catch (error) {
        return done(error);
    }
}));

// JWT
passport.use('jwt', new JWTStrategy(securityHelper.jwtOptions, async (jwtPayload, done) => {
    try {        
        const user = await models.User.findOne({ 
            attributes: { exclude: [ 'password' ] },
            where: { id: jwtPayload.id }, 
            raw: true 
        });

        if (_.isNull(user)) {
            return done(null, false, { message: 'User not found' })
        } else {
            return done(null, user, { message: 'User found' });
        }
    } catch (error) {
        return done(error);
    }
}));