authenticate_old.js

module.exports = app => {
    const User = app.datasource.models.User
    const Business = require('../business/authenticate')(app)
    const crypto = require('../../helpers/crypto')
    const Errors = require('../../errors/sistem/pt-br')

    return {
        authenticate: (req, res) => {

            const query = {
                attributes: {
                    exclude: ['password', 'created_at', 'updated_at', 'master', 'token', 'forgot', 'active']
                },
                where: {
                    $and: [{
                        email: req.body.email
                    }, {
                        password: crypto.md5(req.body.password)
                    }]
                }
            }
            User.findOne(query)
                .then(user =>
                    user
                        ? Business.authenticate(user, res) 
                        : res.status(401).json([Errors.notAuthorization])

                ).catch(err => console.log(err))
        }
    }
}

authenticatenew.js

module.exports = app => {
    const User = app.datasource.models.User
    const Business = require('../business/authenticate')(app)
    const crypto = require('../../helpers/crypto')
    const Errors = require('../../errors/sistem/pt-br')
    const Validate = require('../../helpers/validate')

    return {
        authenticate: (req, res) => {
            const query = {
                attributes: {
                    exclude: ['password', 'created_at', 'updated_at', 'master', 'token', 'forgot', 'active']
                },
                where: {
                    $and: [{
                        email: req.body.email
                    }, {
                        password: crypto.md5(req.body.password)
                    }]
                }
            }
            Validate.searchQuery(User, query)
                .then(Validate.isEmptyObject(res, Errors.notAuthorization))
                .then(Business.authenticate(res))
                .catch(err => console.log(err))
        }
    }
}