use bevy::prelude::*;

mod camera;
mod citizen;
mod game;
mod item;
mod tile;
mod tiles;

use bevy::color::palettes::basic::WHITE;
use game::PIXEL_RATIO;

fn main() {
    App::new()
        .add_plugins(
            DefaultPlugins
                .set(WindowPlugin {
                    primary_window: Some(Window {
                        title: String::from("Dorf"),
                        ..Default::default()
                    }),
                    ..Default::default()
                })
                .set(ImagePlugin::default_nearest()),
        )
        .insert_resource(ClearColor(Color::srgb(0.1, 0.1, 0.15)))
        .add_systems(Startup, (game::setup_level, camera::spawn_panning_camera))
        .add_systems(
            FixedUpdate,
            (
                camera::camera_movement,
                citizen::citizen_movement,
                tile::tile_sprite_update,
            ),
        )
        .add_systems(FixedUpdate, draw_cursor)
        .run();
}

fn draw_cursor(
    camera_query: Single<(&Camera, &GlobalTransform)>,
    windows: Query<&Window>,
    mut gizmos: Gizmos,
) {
    let (camera, camera_transform) = *camera_query;

    let Ok(window) = windows.get_single() else {
        return;
    };

    let Some(cursor_position) = window.cursor_position() else {
        return;
    };

    // Calculate a world position based on the cursor's position.
    let Ok(point) = camera.viewport_to_world_2d(camera_transform, cursor_position) else {
        return;
    };
    println!(
        "pos: {}, {}",
        (point.x / (16. * PIXEL_RATIO)) as i32,
        (point.y / (16. * PIXEL_RATIO)) as i32
    );

    gizmos.circle_2d(point, 10., WHITE);
}