package controller

import (
	"errors"

	"git.tek.govt.hu/dowerx/chat/server/dao"
	"git.tek.govt.hu/dowerx/chat/server/model"
	"golang.org/x/crypto/bcrypt"
)

type UserController struct {
	userDAO dao.IUserDAO
}

const (
	MIN_USERNAME_LENGTH int = 3
	MIN_PASSWORD_LENGTH int = 6
	HASH_COST           int = bcrypt.DefaultCost
)

func (c *UserController) init() error {
	userDAO, err := dao.MakeUserDAO()
	c.userDAO = userDAO
	return err
}

func (c UserController) Register(username string, password string, repeatPassword string) error {
	if len(username) < MIN_USERNAME_LENGTH {
		return errors.New("username too short")
	}
	if len(password) < MIN_PASSWORD_LENGTH {
		return errors.New("password too short")
	}

	if password != repeatPassword {
		return errors.New("passwords don't match")
	}

	hash, err := bcrypt.GenerateFromPassword([]byte(password), HASH_COST)

	if err != nil {
		return err
	}

	return c.userDAO.Create(model.User{
		Username:     username,
		PasswordHash: string(hash),
	})
}