users.js

const jwt = require('jsonwebtoken');

const User = require('../models').User;
const Role = require('../models').Role;
const UserRole = require('../models').UserRole;

module.exports = {
    create(req, res) {
        const { email, name, password } = req.body;
        return User
            .create({
                username: email,
                email,
                name,
                password,
            })
            .then(user => res.status(201).json({ data: user , message: 'User successfully got registered!'}))
            .catch(error => res.status(400).json({ data: error }));
    },
    list(req, res) {
        return User
            .findAll()
            .then(users => res.status(200).json({ data: users }))
            .catch(error => res.status(400).json({ data: error }));
    },
    get(req, res) {
        return res.status(200).json({data: req.user});
    },
    login(req, res) {
        const { email, password } = req.body;
        return User
            .findOne({ where: { email } })
            .then(user => {
                if (user.password === password) {
                    const payload = {id: user.id};
                    const token = jwt.sign(payload, process.env.JWT_SECRET);
                    return res.json({ message: "ok", data: { token } });
                } else {
                    return res.status(401).json({ message: "Passwords did not match" });
                }
            })
            .catch(error => res.status(400).json({ data: error, message: 'No such user found' }));
    },

    addUserRole(req,res){
        const { value } = req.body;
        const id = req.params.id;
        return User
            .findOne({ where: { id } })
            .then(user => {
                const id = user.id;
                Role
                    .findOne({ where: { value } })
                    .then(role => {
                         UserRole.create({
                            UserId : id,
                            RoleId : role.id,
                        });
                        res.status(200).json({message:'Role \'' + value +'\' added to user' });
                    } )
                    .catch(error => res.status(400).json({ data: error, message: 'No such role found' }))
            } )
            .catch(error => res.status(400).json({ data: error, message: 'No such user found' }));
    },

    removeUserRole(req,res){
        const { value } = req.body;
        const id = req.params.id;
        return User
            .findOne({ where: { id } })
            .then(user => {
                Role
                    .findOne({ where: { value } })
                    .then(role => {
                        const id = user.id;
                        UserRole
                            .destroy({ where: { UserId:id, RoleId:role.id } 
                            })
                            .then(userrole => {res.status(200).json({message:'Role \'' + value +'\' removed from user' })})
                            .catch(error => res.status(400).json({ data: error, message: 'No such role assigned to user' }));
                    } )
                    .catch(error => res.status(400).json({ data: error, message: 'No such role found' }))
            } )
        .catch(error => res.status(400).json({ data: error, message: 'No such user found' }));
    },
}