#include "example.hpp"

#include "platform.hpp"
#include "file.hpp"
#include "engine.hpp"
#include "scene.hpp"
#include "asset.hpp"
#include "path.hpp"

void app_main(prism::engine*) {
    prism::set_domain_path(prism::domain::app, "{resource_dir}/data");
    prism::set_domain_path(prism::domain::internal, "{resource_dir}/shaders");

    platform::open_window("Example", {-1, -1, 1280, 720}, WindowFlags::Resizable);
}

void ExampleApp::initialize_render() {
    engine->create_empty_scene();
    auto scene = engine->get_scene();

    camera_obj = scene->add_object();
    auto& camera = scene->add<Camera>(camera_obj);
    camera.near = 0.1f;

    auto sun_obj = scene->add_object();
    auto& sun = scene->add<Light>(sun_obj);
    sun.type = Light::Type::Point;
    sun.use_dynamic_shadows = true;
    sun.size = 25.0f;
    auto& sun_trans = scene->get<Transform>(sun_obj);
    sun_trans.position = {-2, 5, 1};

    auto second_sun_obj = scene->add_object();
    auto& second_sun = scene->add<Light>(second_sun_obj);
    second_sun.type = Light::Type::Point;
    second_sun.color = {1, 0, 0};
    second_sun.use_dynamic_shadows = true;
    second_sun.size = 25.0f;
    scene->get<Transform>(second_sun_obj).position = {-14, 1, -1};

    auto third_sun_obj = scene->add_object();
    auto& third_sun = scene->add<Light>(third_sun_obj);
    third_sun.type = Light::Type::Point;
    third_sun.color = {0, 0, 1};
    third_sun.use_dynamic_shadows = true;
    third_sun.size = 25.0f;
    scene->get<Transform>(third_sun_obj).position = {3, 1, -1};

    main_object = scene->add_object();
    auto& sphere_render = scene->add<Renderable>(main_object);
    sphere_render.mesh = assetm->get<Mesh>(prism::path(prism::app_domain / "models/bunny.model"));
    sphere_render.materials = { assetm->get<Material>(prism::path(prism::app_domain / "materials/Material.material")) };

    auto sibenik_obj = scene->add_object();
    auto& sibenik_render = scene->add<Renderable>(sibenik_obj);
    sibenik_render.mesh = assetm->get<Mesh>(prism::path(prism::app_domain / "models/sibenik.model"));
    scene->get<Transform>(sibenik_obj).position.y = 13.5;

    for(auto& part : sibenik_render.mesh->parts) {
        sibenik_render.materials.push_back(assetm->get<Material>(prism::path(prism::app_domain / "materials" / (part.material_hint + ".material"))));
    }

    auto probe_obj = scene->add_object();
    scene->add<EnvironmentProbe>(probe_obj).size = {80, 30, 25};
}

void ExampleApp::update(const float delta_time) {
    main_object_spin += delta_time * 5.0f;
    main_object_movement += delta_time * 0.5f;

    engine->get_scene()->get<Transform>(main_object).position.x = sin(main_object_movement) * 8.0f;
    engine->get_scene()->get<Transform>(main_object).rotation = euler_to_quat({0, radians(main_object_spin), 0});

    camera_look_at(*engine->get_scene(), camera_obj, prism::float3{2, 2, -2} + engine->get_scene()->get<Transform>(main_object).position, engine->get_scene()->get<Transform>(main_object).position);
}