package systemconfig

import "errors"

var (
	ErrDependencyUnavailable = errors.New("dependency unavailable")
	ErrInvalidConfig         = errors.New("invalid config")
)

type Service struct {
	repo *Repository
}

func NewService(repo *Repository) *Service {
	return &Service{repo: repo}
}

func (s *Service) List() ([]ConfigDTO, error) {
	if s.repo == nil {
		return nil, ErrDependencyUnavailable
	}
	return s.repo.List()
}

func (s *Service) Update(actorID uint64, key string, req UpdateRequest, meta AuditMeta) (*ConfigDTO, error) {
	if s.repo == nil {
		return nil, ErrDependencyUnavailable
	}
	if key == "" || req.Value == "" {
		return nil, ErrInvalidConfig
	}
	return s.repo.Update(actorID, key, req, meta)
}