use crate::{
    GameState, HEDZ_GREEN, cash::CashInventory, loading_assets::UIAssets, player::LocalPlayer,
};
use bevy::prelude::*;

#[derive(Component, Reflect, Default)]
#[reflect(Component)]
struct CashText;

pub fn plugin(app: &mut App) {
    app.add_systems(OnEnter(GameState::Playing), setup);
    app.add_systems(Update, update_ui.run_if(in_state(GameState::Playing)));
}

fn update_ui(
    cash: Single<&CashInventory, (Changed<CashInventory>, With<LocalPlayer>)>,
    text: Query<Entity, With<CashText>>,
    mut writer: TextUiWriter,
) {
    let Some(text) = text.iter().next() else {
        return;
    };

    *writer.text(text, 0) = cash.cash.to_string();
}

fn setup(mut commands: Commands, assets: Res<UIAssets>) {
    commands.spawn((
        Name::new("cash-ui"),
        Text::new("0"),
        TextShadow::default(),
        CashText,
        TextFont {
            font: assets.font.clone(),
            font_size: 34.0,
            ..default()
        },
        TextColor(HEDZ_GREEN.into()),
        TextLayout::new_with_justify(Justify::Center),
        Node {
            position_type: PositionType::Absolute,
            bottom: Val::Px(40.0),
            left: Val::Px(100.0),
            ..default()
        },
    ));
}