{
   err: 'ER_DUP_ENTRY',
   code: 500
}

{
   msg: 'Username already in use',
   code: 500,
};

const register = async (username, password) => {
    try {
        const hashedPassword = await bcrypt.hash(password,12);
        const user = {
            username,
            password: hashedPassword
        };
        await db.query(queryRegister, user);
        return {
            msg: 'User registered with success',
            code: 200,
        };
    } catch(err) {
        if(err.code === 'ER_DUP_ENTRY') {
            return {
                msg: 'Username already in use',
                code: 500,
            };
        }
    }
}

function beautifyError(code) {
  const dict = {
    ER_NOT_FOUND: 'Registro não encontrado',
    ER_DUP_ENTRY: 'Duplicada.',
    ER_DEFAULT: 'Houve um erro desconhecido.'
  };

  if (!dict.hasOwnProperty(code)) {
    return dict['ER_DEFAULT'];
  }

  return dict[code];
}

const register = async (username, password) => {
  try {
    const hashedPassword = await bcrypt.hash(password, 12);
    const user = {
      username,
      password: hashedPassword
    };

    await db.query(queryRegister, user);

    return {
      msg: 'User registered with success',
      code: 200
    };
  } catch ({ code, status = 500 }) {
    const msg = beautifyError(code)
    return { msg, code: status }
  }
};