import Joi from 'joi'

import { POST } from 'Constants/methods'
import { ANY } from 'Constants/ranks'
import Log from 'Logger'
import Users from 'Models/users'
import { createToken } from 'Helpers/auth'
import { comparePassword } from 'Helpers/auth'
import { userToPublic } from 'Utils/users'

const schema = {
    body: {
        email: Joi.string().email().required(),
        password: Joi.string().min(8).max(64).required()
    }
}

const findUser = (request, response, next) => {
    let credentials = request.body

    Users.findOne({
        where: {
            email: credentials.email
        }
    })
        .then(user => {

            if (!user) {
                return response.boom.badRequest('Unknown user')
            }

            request.datas = {
                credentials,
                user
            }

            next()
        })
        .catch(error => {
            response.boom.serverUnavailable('Database error')
            Log.error('Error while fetching an user in database', credentials, error)
        })
}

const checkPassword = (request, response, next) => {
    let { credentials, user } = request.datas

    comparePassword(credentials.password, user.password)
        .then(isValid => {
            if (!isValid) {
                return response.boom.badRequest('Bad password')
            }

            next()
        })
        .catch(error => {
            response.boom.badImplementation('Internal servor error')
            Log.error('Error while comparing user password', credentials, user, error)
        })
}

const sendCookie = (request, response) => {
    let { credentials, user } = request.datas

    const payload = {
        email: credentials.email,
        rank: user.rank,
        id: user.id
    }

    const token = createToken(payload)

    response.cookie('token', token)
    response.status(200).json(userToPublic(user))
}

export default  {
    type: POST,
    path: '/login',
    rank: ANY,
    handlers: [
        findUser,
        checkPassword,
        sendCookie
    ],
    schema
}