// Copyright (c) 2026 Storm Dragon
// Authors: Storm Dragon, Angus Kola
// SPDX-License-Identifier: GPL-3.0-or-later
package xorg

/*
#cgo pkg-config: x11
#include "commands_native.h"
*/
import "C"

type PointerPosition struct {
	X, Y, PID int
	Window    uint64
	Known     bool
}

// PointerReader owns one X connection. Use it from one goroutine and close it
// after that goroutine has stopped.
type PointerReader struct{ display *C.Display }

func OpenPointerReader() *PointerReader {
	display := C.XOpenDisplay(nil)
	if display == nil {
		return nil
	}
	return &PointerReader{display: display}
}

func (reader *PointerReader) Read() PointerPosition {
	if reader == nil || reader.display == nil {
		return PointerPosition{}
	}
	value := C.cthulhu_read_pointer(reader.display)
	return PointerPosition{X: int(value.x), Y: int(value.y), PID: int(value.pid),
		Window: uint64(value.window), Known: value.known != 0}
}

func (reader *PointerReader) Close() {
	if reader != nil && reader.display != nil {
		C.XCloseDisplay(reader.display)
		reader.display = nil
	}
}