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

package xorg

/*
#cgo CFLAGS: -D_GNU_SOURCE
#include "window_title.h"
#include <stdlib.h>
*/
import "C"

import (
	"strings"
	"unsafe"
)

// WindowTitle contains only copied metadata. Window is the foreground client;
// TitleWindow may be a program inside its Wine desktop. Application is WM_CLASS
// for programs without an AT-SPI application identity.
type WindowTitle struct {
	Window, TitleWindow uint64
	Title, Application  string
	Wine, Focused       bool
	Client              Foreground
}

// ReadTitle runs on the same native owner thread as Read and Close.
func (reader *ForegroundReader) ReadTitle(window uint64) WindowTitle {
	if reader == nil || reader.display == nil || window == 0 {
		return WindowTitle{}
	}
	value := C.cthulhu_read_window_title(reader.display, C.Window(window))
	defer C.free(unsafe.Pointer(value.title))
	defer C.free(unsafe.Pointer(value.application))
	return WindowTitle{Window: uint64(value.window), TitleWindow: uint64(value.titleWindow),
		Wine: value.wine != 0, Focused: value.focused != 0,
		Client:      Foreground{Known: value.width > 0 && value.height > 0, Window: uint64(value.titleWindow), X: int(value.x), Y: int(value.y), Width: int(value.width), Height: int(value.height)},
		Title:       strings.TrimSpace(strings.ToValidUTF8(C.GoString(value.title), "\ufffd")),
		Application: strings.TrimSpace(strings.ToValidUTF8(C.GoString(value.application), "\ufffd"))}
}