use objc2::rc::{Id, Shared};
use raw_window_handle::{HasRawWindowHandle, RawWindowHandle};
use sdl2::video::Window;

#[cfg(target_os = "macos")]
mod appkit;

pub trait Tap {
    fn tap(self) -> Self;
}

impl Tap for Window {
    fn tap(self) -> Self {
        tap(&self);
        self
    }
}

fn tap(window: &Window) {
    match window.raw_window_handle() {
        #[cfg(target_os = "macos")]
        RawWindowHandle::AppKit(handle) => {
            use crate::appkit::{NSWindowButton, NSWindowStyleMask, NSWindowTitleVisibility};

            let ns_window: Option<Id<appkit::NSWindow, Shared>> =
                unsafe { Id::new(handle.ns_window as *mut appkit::NSWindow) };

            let ns_window = ns_window.expect("ns_window should not be null");

            {
                let mut mask = ns_window.style_mask();
                mask |= NSWindowStyleMask::FULL_SIZE_CONTENT_VIEW;
                ns_window.set_style_mask(mask);
            }

            ns_window.set_title_visibility(NSWindowTitleVisibility::Hidden);
            ns_window.set_titlebar_appears_transparent(true);

            for titlebar_button in [
                NSWindowButton::Close,
                NSWindowButton::Miniaturize,
                NSWindowButton::Zoom,
                #[allow(deprecated)]
                NSWindowButton::FullScreen,
            ] {
                if let Some(button) = ns_window.standard_window_button(titlebar_button) {
                    button.set_hidden(true);
                }
            }
        }

        _ => {}
    }
}