use crate::*;
use std::thread::{spawn, JoinHandle};
use ::winit::{
    application::ApplicationHandler,
    event::WindowEvent,
    event_loop::{ActiveEventLoop, ControlFlow, EventLoop},
    window::{Window, WindowId},
    platform::x11::EventLoopBuilderExtX11
};

//pub struct LV2PluginUI {
    //write:      (),
    //controller: (),
    //widget:     (),
    //features:   (),
    //transfer:   (),
//}

pub fn run_lv2_ui (mut ui: LV2PluginUI) -> Usually<JoinHandle<()>> {
    Ok(spawn(move||{
        let event_loop = EventLoop::builder().with_x11().with_any_thread(true).build().unwrap();
        event_loop.set_control_flow(ControlFlow::Wait);
        event_loop.run_app(&mut ui).unwrap()
    }))
}

/// A LV2 plugin's X11 UI.
pub struct LV2PluginUI {
    pub window: Option<Window>
}

impl LV2PluginUI {
    pub fn new () -> Usually<Self> {
        Ok(Self { window: None })
    }
}

impl ApplicationHandler for LV2PluginUI {
    fn resumed (&mut self, event_loop: &ActiveEventLoop) {
        self.window = Some(event_loop.create_window(Window::default_attributes()).unwrap());
    }
    fn window_event (&mut self, event_loop: &ActiveEventLoop, id: WindowId, event: WindowEvent) {
        match event {
            WindowEvent::CloseRequested => {
                self.window.as_ref().unwrap().set_visible(false);
                event_loop.exit();
            },
            WindowEvent::RedrawRequested => {
                self.window.as_ref().unwrap().request_redraw();
            }
            _ => (),
        }
    }
}

fn lv2_ui_instantiate (kind: &str) {
    //let host = Suil
}

pub fn jack_from_lv2 (name: &str, plugin: &::livi::Plugin) -> Usually<Jack> {
    let counts = plugin.port_counts();
    let mut jack = Jack::new(name)?;
    for i in 0..counts.atom_sequence_inputs {
        jack = jack.midi_in(&format!("midi-in-{i}"))
    }
    for i in 0..counts.atom_sequence_outputs {
        jack = jack.midi_out(&format!("midi-out-{i}"));
    }
    for i in 0..counts.audio_inputs {
        jack = jack.audio_in(&format!("audio-in-{i}"));
    }
    for i in 0..counts.audio_outputs {
        jack = jack.audio_out(&format!("audio-out-{i}"));
    }
    Ok(jack)
}