mod audio;
mod debug;
mod display2d;
mod display3d;
mod game;
mod prelude;

use std::time::Duration;

use bevy::asset::ChangeWatcher;

use crate::prelude::*;

fn main() {
    App::new()
        .add_state::<GameState>()
        .add_systems(Update, state)
        .add_systems(Update, loading.run_if(in_state(GameState::Loading)))
        .add_plugins((
            DefaultPlugins
                .set(ImagePlugin::default_nearest())
                .set(WindowPlugin {
                    primary_window: Some(Window {
                        title: "Martian Chess".into(),
                        resolution: (640., 480.).into(),
                        ..default()
                    }),
                    ..default()
                })
                .set(AssetPlugin {
                    watch_for_changes: ChangeWatcher::with_delay(Duration::from_millis(200)),
                    ..default()
                }),
            audio::AudioPlugin,
            debug::DebugPlugin,
            display2d::Display2dPlugin,
            display3d::Display3dPlugin,
            game::GamePlugin,
        ))
        .run();
}

#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug, Default, States)]
pub enum GameState {
    #[default]
    Loading,
    Menu,
    Display2d,
    Display3d,
}

fn loading(
    server: Res<AssetServer>,
    sprites: Res<Assets<Image>>,
    mut next_state: ResMut<NextState<GameState>>,
) {
    let items = { sprites.ids() };
    let states = server.get_group_load_state(items);
    match states {
        LoadState::Loaded | LoadState::NotLoaded => next_state.set(GameState::Display2d),
        _ => (),
    }
}

fn state(state: Option<Res<State<GameState>>>) {
    state.map(|s| {
        if s.is_added() || s.is_changed() {
            info!("Updated state is {:?}", s);
        }
    });
}