use bevy::prelude::*;

#[derive(Component)]
struct Person;

#[derive(Component)]
struct Name(String);

#[derive(Component)]
struct Position {
    x: f32,
    y: f32,
}

#[derive(Resource)]
struct GreetTimer(Timer);

struct Entity(u64);

pub struct HelloPlugin;

impl Plugin for HelloPlugin {
    fn build(&self, app: &mut App) {
        // add things to your app here
    }
}

fn add_people(mut commands: Commands) {
    commands.spawn((Person, Name("Elaina Proctor".to_string())));
    commands.spawn((Person, Name("Renzo Hume".to_string())));
    commands.spawn((Person, Name("Zayna Nieves".to_string())));
}
fn main() {
    let mut app = App::new();
    app.add_plugins((DefaultPlugins, HelloPlugin))
        .add_systems(Startup, add_people)
        .add_systems(Update, greet_people)
        .insert_resource(GreetTimer(Timer::from_seconds(0.2, TimerMode::Repeating)));

    app.run()
}

fn greet_people(time: Res<Time>, mut timer: ResMut<GreetTimer>, query: Query<&Name, With<Person>>) {
    // update our timer with the time elapsed since the last update
    // if that caused the timer to finish, we say hello to everyone
    if timer.0.tick(time.delta()).just_finished() {
        for name in &query {
            println!("hello {}!", name.0);
        }
    }
}