package useCases

import (
	"RenewCMS/internal/domain/hash"
	"RenewCMS/internal/domain/user"
)

type AuthenticateUserUseCase struct {
	userRepository user.Repository
	hasher         hash.Hasher
}

func NewAuthenticateUserUseCase(userRepository user.Repository, hasher hash.Hasher) *AuthenticateUserUseCase {
	return &AuthenticateUserUseCase{userRepository, hasher}
}

func (a *AuthenticateUserUseCase) Authenticate(username string, password string) (user.User, error) {
	dbUser, err := a.userRepository.GetByUsername(username)
	if err != nil {
		return user.User{}, err
	}

	if err := a.hasher.Compare(dbUser.Password, password); err != nil {
		return user.User{}, user.ErrInvalidCredentials
	}

	return dbUser, nil
}