use bevy::audio::{AudioPlugin, SpatialScale};
use bevy::prelude::{default, *};

mod assets;
mod camera;
mod main_menu;
mod movement;
mod player;
mod statue;

#[derive(States, Default, Debug, Clone, PartialEq, Eq, Hash)]
pub enum Game {
    #[default]
    Running,
    Paused,
}

#[derive(States, Default, Debug, Clone, PartialEq, Eq, Hash)]
pub enum View {
    // #[default]
    // LoadingScreen,
    #[default]
    MainMenu,
    InGame,
}

#[derive(SystemSet, Debug, Clone, PartialEq, Eq, Hash)]
struct MainMenuSet;

#[derive(SystemSet, Debug, Clone, PartialEq, Eq, Hash)]
struct InGameSet;

fn main() {
    let mut app = App::new();

    app.init_resource::<assets::AssetLoader>();

    app.insert_state(View::default());
    app.insert_state(Game::default());

    app.add_plugins((DefaultPlugins
        .set(WindowPlugin {
            primary_window: Some(Window {
                title: "Kodo Tag".into(),
                mode: bevy::window::WindowMode::BorderlessFullscreen,
                // resolution: (640. * 2., 360. * 2.).into(),
                ..default()
            }),
            ..default()
        })
        .set(AudioPlugin {
            default_spatial_scale: SpatialScale::new_2d(1.),
            global_volume: GlobalVolume::new(1.),
            ..default()
        })
        .set(ImagePlugin::default_nearest()),))
        .add_systems(OnEnter(View::MainMenu), main_menu::startup)
        .add_systems(OnExit(View::MainMenu), main_menu::exit)
        .add_systems(OnEnter(View::InGame), (player::startup, statue::startup))
        .add_systems(OnExit(View::InGame), (player::exit, statue::exit))
        .add_systems(Startup, (assets::startup, camera::startup))
        .add_systems(
            Update,
            (
                (
                    player::sprite_select,
                    player::controls,
                    movement::update_velocity_by_heading,
                    movement::resolve_velocity.after(movement::update_velocity_by_heading),
                    movement::ysort.after(movement::update_velocity_by_heading),
                    camera::update
                        .after(player::controls)
                        .after(movement::resolve_velocity),
                )
                    .in_set(InGameSet)
                    .run_if(in_state(View::InGame)),
                (main_menu::update)
                    .in_set(MainMenuSet)
                    .run_if(in_state(View::MainMenu)),
            ),
        )
        .insert_resource(ClearColor(Color::rgb(0.1, 0.1, 0.1)))
        .insert_resource(AmbientLight {
            color: Color::rgb(1., 1., 1.),
            brightness: 1.,
        });

    app.run()
}