package adminaudit import ( "context" "errors" ) var ErrDependencyUnavailable = errors.New("dependency unavailable") type Service struct { repo *Repository } func NewService(repo *Repository) *Service { return &Service{repo: repo} } func (s *Service) List(ctx context.Context, query Query) (*PaginatedResult, error) { if s.repo == nil { return nil, ErrDependencyUnavailable } return s.repo.List(ctx, query) }