use bevy::prelude::*;
use bevy_egui::{egui, EguiContexts, EguiPlugin};

pub mod util;
pub mod components;
pub mod systems;

use components::*;
use util::roll;

fn main() {
    App::new()
        .add_plugins(DefaultPlugins)
        .add_plugins(EguiPlugin)
        .add_systems(Startup, setup)
        .add_systems(Update, gui)
        .run();
}

fn setup(
    mut commands: Commands,
    mut meshes: ResMut<Assets<Mesh>>,
    mut materials: ResMut<Assets<StandardMaterial>>,
) {
    let names = ["Dane", "Cole"];
    for i in 0..2 {
        let (hp, _) = roll("1d6 + 3");
        commands.spawn(Creature {
            health: Health {
                hp,
                max: hp,
            },
            armor: Armor {
                ac: 10,
            },
            spatial: SpatialBundle {
                transform: Transform::from_xyz(i as f32 * 2.0, 0.0, 0.0),
                ..default()
            },
        })
            .insert(PlayerCharacter {
                name: names[i].to_string(),
            })
            .with_children(|parent| {
                parent.spawn(PbrBundle {
                    mesh: meshes.add(shape::Capsule::default().into()),
                    material: materials.add(Color::WHITE.into()),
                    ..default()
                });
            });
    }

    commands.spawn(DirectionalLightBundle {
        transform: Transform::default().looking_at(Vec3::new(3.0, -50.0, 1.0), Vec3::Y),
        ..default::<_>()
    });
    commands.spawn(Camera3dBundle {
        transform: Transform::from_xyz(1.0, 15.0, 2.0).looking_at(Vec3::ZERO, Vec3::Y),
        ..default()
    });
}

fn gui(
    query: Query<(&Health, &PlayerCharacter)>,
    mut contexts: EguiContexts
) {
    let ctx = contexts.ctx_mut();
    egui::Window::new("Battle Menu")
        .title_bar(false)
        .collapsible(false)
        .resizable(false)
        .movable(false)
        .show(ctx, |ui| {
            for (health, pc) in query.iter() {
                ui.label(format!("{} HP: {}", pc.name, health.hp));
            }
        });
}