#include <QApplication>
#include <QTimer>
#include <QX11Info>
#include "qt_dialog.h"

#include <xcb/xcb.h>

// Qt 头文件必须在 Motif/X11 之前
#include <X11/Intrinsic.h>
#include <Xm/Xm.h>
#include <Xm/PushB.h>
#include <unistd.h> // for usleep
#include <iostream>

// 全局 Qt 应用和对话框指针
QApplication *g_app = nullptr;

// 打开 Qt 对话框
void openQtDialog(Widget w, XtPointer client_data, XtPointer call_data)
{
    auto dialog = new QtDialog();
    dialog->setAttribute(Qt::WA_DeleteOnClose); // 关闭时自动删除
    dialog->show();                             // 非阻塞显示
}

// Motif 主循环中处理 Qt 事件
void processQtEvents()
{
    if (g_app)
    {
        g_app->processEvents();
    }
}

int main(int argc, char **argv)
{
    XtAppContext app_context;
    Widget toplevel, button;

    // 创建 QApplication（必须在 Qt 头文件之后）
    g_app = new QApplication(argc, nullptr);

    // int screen_num;
    // xcb_connection_t *connection = xcb_connect(NULL, &screen_num);
    xcb_connection_t *connection = QX11Info::connection();
    // Qt 内部管理的 screen_num
    int screen_num = QX11Info::appScreen();

    if (xcb_connection_has_error(connection))
    {
        fprintf(stderr, "无法连接到 X 服务器\n");
        return -1;
    }

    const xcb_setup_t *setup = xcb_get_setup(connection);
    xcb_screen_iterator_t iter = xcb_setup_roots_iterator(setup);
    for (int i = 0; i <= screen_num; i++)
    {
        xcb_screen_t *screen = iter.data;
        xcb_screen_next(&iter);

        printf("屏幕根窗口: %u, 尺寸: %dx%d\n",
               screen->root, screen->width_in_pixels, screen->height_in_pixels);

        std::cout << "screen_num: " << screen_num << std::endl;
        std::cout << "screen root window: " << screen->root << std::endl;
        std::cout << "screen size: " << screen->width_in_pixels
                  << "x" << screen->height_in_pixels << std::endl;
    }

    // 创建 Motif 主窗口
    toplevel = XtVaAppInitialize(&app_context, "MotifQtApp", NULL, 0,
                                 &argc, argv, NULL, NULL);

    button = XtVaCreateManagedWidget("Open Qt Dialog",
                                     xmPushButtonWidgetClass,
                                     toplevel, NULL);
    XtAddCallback(button, XmNactivateCallback, openQtDialog, NULL);

    XtRealizeWidget(toplevel);

    XEvent event;
    while (1)
    {
        while (XtAppPending(app_context))
        {
            XtAppNextEvent(app_context, &event);
            XtDispatchEvent(&event);
        }

        // 每次空闲处理 Qt 事件
        processQtEvents();

        // 避免 CPU 空转
        usleep(1000);
    }

    // 清理（一般不会执行到这里）
    delete g_app;
    // xcb_disconnect(connection);

    return 0;
}