package stario

import "errors"

var (
	ErrSignalInterrupt = errors.New("interrupt")
	ErrSignalStop      = errors.New("stop")
	ErrSignalQuit      = errors.New("quit")
)

type inputSignalError struct {
	msg   string
	cause error
}

func (e *inputSignalError) Error() string {
	return e.msg
}

func (e *inputSignalError) Unwrap() error {
	return e.cause
}

func signalErrorForType(sigtype rune) error {
	switch sigtype {
	case 0x03:
		return &inputSignalError{
			msg:   "SIGNAL SIGINT RECIVED",
			cause: ErrSignalInterrupt,
		}
	case 0x1a:
		return &inputSignalError{
			msg:   "SIGNAL SIGSTOP RECIVED",
			cause: ErrSignalStop,
		}
	case 0x1c:
		return &inputSignalError{
			msg:   "SIGNAL SIGQUIT RECIVED",
			cause: ErrSignalQuit,
		}
	default:
		return nil
	}
}