use crate::movement::YSortable;
use crate::prelude::*;

#[derive(Component, Debug, Default)]
pub struct Statue;

#[derive(Bundle, Default)]
pub struct StatueBundle {
    gameobject: Gameobject,
    statue: Statue,
    ysort: YSortable,
    sprite: SpriteBundle,
    texture: TextureAtlas,
}

pub fn startup(mut events: EventWriter<SpawnStatueEvent>) {
    events.send_batch([
        SpawnStatueEvent(Vec3::new(50., 50., 0.)),
        SpawnStatueEvent(Vec3::new(50., 100., 0.)),
    ]);
}

#[derive(Event)]
pub struct SpawnStatueEvent(Vec3);

pub fn spawn_statue(
    mut events: EventReader<SpawnStatueEvent>,
    mut commands: Commands,
    assets: Res<AssetServer>,
    mut layouts: ResMut<Assets<TextureAtlasLayout>>,
) {
    // TODO: rebuilding this layout each spawn is surely not correct?
    let layout = layouts.add(TextureAtlasLayout::from_grid(
        UVec2::new(40, 74),
        1,
        1,
        None,
        Some(UVec2::new(443, 20)),
    ));

    for ev in events.read() {
        let bundle = StatueBundle {
            sprite: SpriteBundle {
                transform: Transform::from_translation(ev.0),
                texture: assets.load("img/Props.png"),
                ..default()
            },
            texture: TextureAtlas {
                layout: layout.clone(),
                ..default()
            },
            ..default()
        };
        commands.spawn(bundle);
    }
}

pub fn exit(mut commands: Commands, q: Query<Entity, With<Statue>>) {
    for id in q.iter() {
        commands.entity(id).despawn_recursive();
    }
}