// Copyright (c) 2019-2024 Alexander Medvednikov. All rights reserved.
// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
//
// TODO: Windows version needs to be implemented.
// Will serve as more advanced input method
// based on the work of https://github.com/AmokHuginnsson/replxx
//
module termios

type TcFlag = int
type Speed = int
type Cc = u8

// flag provides a termios flag of the correct size for the underlying C.termios structure.
// It is only implemented for Unix like OSes.
pub fn flag(value int) TcFlag {
    return int(value)
}

// invert is a platform dependant way to bitwise NOT (~) TcFlag, as its length varies across platforms.
// It is only implemented for Unix like OSes.
pub fn invert(value TcFlag) TcFlag {
    return ~int(value)
}

pub struct Termios {
pub mut:
    c_iflag  TcFlag
    c_oflag  TcFlag
    c_cflag  TcFlag
    c_lflag  TcFlag
    c_line   Cc
    c_cc     [32]Cc
    c_ispeed Speed
    c_ospeed Speed
}

// tcgetattr is an unsafe wrapper around C.termios and keeps its semantic.
// It is only implemented for Unix like OSes.
pub fn tcgetattr(fd int, mut termios_p Termios) int {
    return -1
}

// tcsetattr is an unsafe wrapper around C.termios and keeps its semantic.
// It is only implemented for Unix like OSes.
pub fn tcsetattr(fd int, optional_actions int, mut termios_p Termios) int {
    return -1
}

// ioctl is an unsafe wrapper around C.ioctl and keeps its semantic.
// It is only implemented for Unix like OSes.
@[inline]
pub fn ioctl(fd int, request u64, arg voidptr) int {
    return -1
}

// set_state applies the flags in the `new_state` to the descriptor `fd`.
pub fn set_state(fd int, new_state Termios) int {
    return -1
}

// disable_echo disables echoing characters as they are typed, when that Termios state is later set with termios.set_state(fd,t).
pub fn (mut t Termios) disable_echo() {
}