use tauri::{
    Manager,
    menu::{MenuBuilder, MenuItemBuilder},
    tray::{MouseButton, MouseButtonState, TrayIconBuilder, TrayIconEvent},
};

pub fn create_tray(app: &tauri::App) -> Result<(), Box<dyn std::error::Error>> {
    let show = MenuItemBuilder::with_id("show", "显示主窗口").build(app)?;
    let quit = MenuItemBuilder::with_id("quit", "退出").build(app)?;

    let menu = MenuBuilder::new(app)
        .item(&show)
        .separator()
        .item(&quit)
        .build()?;

    let mut tray_builder = TrayIconBuilder::new()
        .menu(&menu)
        .tooltip("Fischer AgentKit");

    if let Some(icon) = app.default_window_icon() {
        tray_builder = tray_builder.icon(icon.clone());
    }

    let _tray = tray_builder
        .on_menu_event(|app, event| match event.id().as_ref() {
            "show" => {
                if let Some(window) = app.get_webview_window("main") {
                    let _ = window.show();
                    let _ = window.set_focus();
                }
            }
            "quit" => {
                // Stop backend before exiting
                let state = app.state::<crate::BackendState>();
                // Cancel listener task
                if let Some(token) = state.cancel_token.lock().unwrap().take() {
                    token.cancel();
                }
                // Kill the child process
                if let Some(child) = state.child.lock().unwrap().take() {
                    let _ = child.kill();
                }
                *state.port.lock().unwrap() = None;
                app.exit(0);
            }
            _ => {}
        })
        .on_tray_icon_event(|tray, event| {
            if let TrayIconEvent::Click {
                button: MouseButton::Left,
                button_state: MouseButtonState::Up,
                ..
            } = event
            {
                let app = tray.app_handle();
                if let Some(window) = app.get_webview_window("main") {
                    let _ = window.show();
                    let _ = window.set_focus();
                }
            }
        })
        .build(app)?;

    Ok(())
}