package users

import (
	"fmt"

	"golang.org/x/crypto/bcrypt"
)

type SiteUser struct {
	Username     string `yaml:"username"`
	PasswordHash string `yaml:"password-hash"`
	Password     string `yaml:"password"`
}

func (su *SiteUser) SetPasswordHashIfNecessary() error {
	if su.Password == "" {
		return nil
	}

	res, err := bcrypt.GenerateFromPassword([]byte(su.Password), bcrypt.DefaultCost)
	if err != nil {
		return fmt.Errorf("SetPasswordHashIfNecessary: %w", err)
	}

	su.Password = ""
	su.PasswordHash = string(res)

	return nil
}

func (su *SiteUser) CheckPassword(pass string) error {
	err := su.SetPasswordHashIfNecessary()
	if err != nil {
		return err
	}

	err = bcrypt.CompareHashAndPassword([]byte(su.PasswordHash), []byte(pass))
	if err != nil {
		return fmt.Errorf("CheckPassword: %w", err)
	}

	return nil
}