// SPDX-License-Identifier: LGPL-2.1-only
// Copyright (C) 2026 Liberux Labs, S. L. <info@liberux.net>

use android_activity::input::Keycode;

use crate::Keysym;

/// The keysym of a key that types no character: navigation, editing, function and modifier keys, and back. `None` for the others, whose keysym is the character they type.
pub( super ) fn keysym( code: Keycode ) -> Option<Keysym>
{
	Some( match code
	{
		Keycode::DpadLeft                    => Keysym::Left,
		Keycode::DpadRight                   => Keysym::Right,
		Keycode::DpadUp                      => Keysym::Up,
		Keycode::DpadDown                    => Keysym::Down,
		Keycode::Enter | Keycode::DpadCenter => Keysym::Return,
		Keycode::NumpadEnter                 => Keysym::KP_Enter,
		Keycode::Del                         => Keysym::BackSpace,
		Keycode::ForwardDel                  => Keysym::Delete,
		Keycode::Tab                         => Keysym::Tab,
		Keycode::Escape                      => Keysym::Escape,
		Keycode::MoveHome                    => Keysym::Home,
		Keycode::MoveEnd                     => Keysym::End,
		Keycode::PageUp                      => Keysym::Page_Up,
		Keycode::PageDown                    => Keysym::Page_Down,
		Keycode::Insert                      => Keysym::Insert,
		Keycode::F1                          => Keysym::F1,
		Keycode::F2                          => Keysym::F2,
		Keycode::F3                          => Keysym::F3,
		Keycode::F4                          => Keysym::F4,
		Keycode::F5                          => Keysym::F5,
		Keycode::F6                          => Keysym::F6,
		Keycode::F7                          => Keysym::F7,
		Keycode::F8                          => Keysym::F8,
		Keycode::F9                          => Keysym::F9,
		Keycode::F10                         => Keysym::F10,
		Keycode::F11                         => Keysym::F11,
		Keycode::F12                         => Keysym::F12,
		Keycode::Back                        => Keysym::XF86_Back,
		Keycode::Forward                     => Keysym::XF86_Forward,
		Keycode::Menu                        => Keysym::Menu,
		Keycode::Cut                         => Keysym::XF86_Cut,
		Keycode::Copy                        => Keysym::XF86_Copy,
		Keycode::Paste                       => Keysym::XF86_Paste,
		Keycode::ShiftLeft                   => Keysym::Shift_L,
		Keycode::ShiftRight                  => Keysym::Shift_R,
		Keycode::CtrlLeft                    => Keysym::Control_L,
		Keycode::CtrlRight                   => Keysym::Control_R,
		Keycode::AltLeft                     => Keysym::Alt_L,
		Keycode::AltRight                    => Keysym::Alt_R,
		Keycode::MetaLeft                    => Keysym::Super_L,
		Keycode::MetaRight                   => Keysym::Super_R,
		Keycode::CapsLock                    => Keysym::Caps_Lock,
		Keycode::NumLock                     => Keysym::Num_Lock,
		Keycode::ScrollLock                  => Keysym::Scroll_Lock,
		Keycode::Sysrq                       => Keysym::Print,
		_                                    => return None,
	} )
}