package term

import (
	"fmt"
	"runtime"
)

type state struct{}

func isTerminal(fd int) bool {
	return false
}

func makeRaw(fd int) (*State, error) {
	return nil, fmt.Errorf("terminal: MakeRaw not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
}

func getState(fd int) (*State, error) {

	if v := strings.ToLower(os.Getenv("TERM")); v == "" || v == "dumb" {
		return nil
	}
	// test if we can use term.ReadLine
	// that assumes operation in the raw mode.
	oldState, err := term.MakeRaw(0)
	if err != nil {
		return nil
	}
	term.Restore(0, oldState)

	rw := struct {
		io.Reader
		io.Writer
	}{os.Stdin, os.Stderr}
	return &readlineUI{term: term.NewTerminal(rw, "")}
}

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}}