import (
	"golang.org/x/sys/unix"
)

type state struct {
	termios unix.Termios
}

func isTerminal(fd int) bool {
	_, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
	return err == nil
}

func makeRaw(fd int) (*State, error) {
	termios, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
	if err != nil {
		return nil, err
	}

	oldState := State{state{termios: *termios}}

func IoctlGetWinsize(fd int, req int) (*Winsize, error) {
	var value Winsize
	err := ioctlPtr(fd, req, unsafe.Pointer(&value))
	return &value, err
}

// IoctlGetTermios performs an ioctl on fd with a *Termios.
//
// The req value is expected to be TCGETS
func IoctlGetTermios(fd int, req int) (*Termios, error) {
	var value Termios
	if req != TCGETS {
		return &value, ENOSYS
	}
	err := Tcgetattr(fd, &value)
	return &value, err

	return value, err
}

func IoctlGetWinsize(fd int, req int) (*Winsize, error) {
	var value Winsize
	err := ioctlPtr(fd, req, unsafe.Pointer(&value))
	return &value, err
}

func IoctlGetTermios(fd int, req int) (*Termios, error) {
	var value Termios
	err := ioctlPtr(fd, req, unsafe.Pointer(&value))
	return &value, err

	return value, err
}

func IoctlGetWinsize(fd int, req uint) (*Winsize, error) {
	var value Winsize
	err := ioctlPtr(fd, req, unsafe.Pointer(&value))
	return &value, err
}

func IoctlGetTermios(fd int, req uint) (*Termios, error) {
	var value Termios
	err := ioctlPtr(fd, req, unsafe.Pointer(&value))
	return &value, err