use bevy::{prelude::*, asset, render::{Albedo, render_graph_2::{StandardMaterial, ShaderUniforms}}};

fn main() {
    AppBuilder::new().add_defaults_legacy().setup_world(setup).run();
}

fn setup(world: &mut World) {
    let texture_handle = {
        let mut texture_storage = world.resources.get_mut::<AssetStorage<Texture>>().unwrap();
        let texture = Texture::load(TextureType::Data(asset::create_texels(256)));
        (texture_storage.add(texture))
    };

    let mut color_shader_uniforms = ShaderUniforms::new();
    let color_material = StandardMaterial {
        // albedo: Albedo::Color(math::vec4(1.0, 0.0, 0.0, 0.0))
        albedo: math::vec4(1.0, 0.0, 0.0, 0.0)
    };

    // color_shader_materials.add(color_material.get_selector());

    // world.insert(
    //     (),
    //     vec![(
    //         color_shader_materials,
    //         color_material,
    //     )],
    // );

    // let mut texture_shader_materials = ShaderMaterials::new();
    // let texture_material = StandardMaterial {
    //     albedo: Albedo::Texture(texture_handle)
    // };

    // texture_shader_materials.add(texture_material.get_selector());

    // world.insert(
    //     (),
    //     vec![(
    //         texture_shader_materials,
    //         texture_material,
    //     )],
    // );

    // for (entity, materials) in <Read<ShaderMaterials>>::query().iter_entities(world) {
    //     println!("entity {}", entity);
    //     for selector in materials.materials.iter() {
    //         let shader_material = selector(entity, world).unwrap();
    //         print!("  ");
    //         for property in shader_material.iter_properties() {
    //             println!("property: {}", property);
    //             print!("    ");
    //             match shader_material.get_property(property) {
    //                 Some(a) => match a {
    //                     ShaderValue::Vec4(color) => println!("color {}", color),
    //                     ShaderValue::Texture(ref handle) => println!("tex {}", handle.id),
    //                     _ => println!("other"),
    //                 },
    //                 None => println!("none"),
    //             }
    //         } 
    //     }
    // }
}