package domain

import "errors"

var (
	ErrNotFound     = errors.New("not found")
	ErrForbidden    = errors.New("forbidden")
	ErrConflict     = errors.New("conflict")
	ErrInvalidInput = errors.New("invalid input")
)

// ValidationError carries a user-safe explanation for invalid input.
type ValidationError struct {
	Message string
}

func (e ValidationError) Error() string { return e.Message }

func (e ValidationError) Is(target error) bool { return target == ErrInvalidInput }

func NewValidationError(message string) error {
	return ValidationError{Message: message}
}