use anyhow::Result;

use ecs::*;
use engine::prelude::*;

pub struct Game;

impl Game {
    pub fn update(&mut self, _world: &mut World) -> Result<()> {
        Ok(())
    }

    pub fn event(&mut self, world: &mut World, event: EngineEvent<'_>) -> Result<()> {
        match event {
            EngineEvent::MouseButtonDown(MouseButton::Left) => {
                let camera_control = world.resources.get_mut::<FreeCameraControl>();
                camera_control.mouse_down();
            }
            EngineEvent::MouseButtonUp(MouseButton::Left) => {
                let camera_control = world.resources.get_mut::<FreeCameraControl>();
                camera_control.mouse_release();
            }
            EngineEvent::MouseMotion(x, y) => {
                let mut resources = world.resources.multi_mut();
                let scene = resources.get::<Scene>();
                let camera_control = resources.get::<FreeCameraControl>();

                camera_control.mouse_move(x, y, scene.view_mut())?;
            }

            _ => (),
        }

        Ok(())
    }
}

impl Game {
    pub fn setup_updates(world_builder: &mut WorldBuilder) -> Result<()> {
        world_builder.add_update(name, priority, func, filter)?;

        Ok(())
    }
}