#include <maker/presenter.hpp>
#include <maker/index.hpp>
#include <maker/handlers/button_handler.hpp>
#include <gfx/index.hpp>
#include <osi/index.hpp>
#include <com/math_files.hpp>
#include <utils/context_utils.hpp>
#include <gfx/ui/transform.hpp>
#include <iostream>
#include <sstream>
#include <fstream>
#include <gfx/text_generator.hpp>

namespace mak {

Presenter::Presenter()
    : com::Runner{ self_name() }
{}

Presenter::~Presenter()
{}

void Presenter::initialize()
{
    osi::presenters()->push_back<com::Folder>("maker")->push_back<com::Link>(self_name() + ".link", this);

    gfx::Shader* forward_uniform_color_shader =  gfx::shader_generators()->insert_shader_forward_uniform_color();

    gfx::object_system()->push_frame_back(
        gfx::object_system()->insert_object(
            { "grid" },
            gfx::shader_generators()->insert_shader_forward_varying_color(),
            gfx::buffer_generators()->insert_procedural_grid()
            ),
        grid_frame()
        );

    // --- BEGIN test_box ---
    com::Folder* const test_box = gfx::object_system()->insert_object(
            { "maker", "test_box" },
            forward_uniform_color_shader,
            gfx::buffer_generators()->insert_procedural_box_solid({ 0.5f, 0.5f, 0.5f } , "test_box", { "maker" })
            );
    gfx::object_system()->push_frame_back(
        test_box ,
        root()->push_back<com::Folder>("test_box")->push_back<com::Frame>()
        );
    gfx::object_system()->get_uniforms(test_box)->push_back<com::FileVec3>("material_ambient_color", vec3{ 0.75f, 0.75f, 0 });

    // The second instance
    com::Frame* const frame2 = root()->push_back<com::Folder>("test_box_2")->push_back<com::Frame>();
    frame2->move_origin({ 0.5f, 0, 1.5f });
    gfx::object_system()->push_frame_back(test_box, frame2);

    // --- END test_box ---

    // UI
    
    // Create gfx/ui/ and maker/ui/ folders
    gfx::UiElement* ui_elem1 = gfx::ui_system()->insert_element("ui_elem1");
    gfx::UiElement* ui_elem2 = gfx::ui_system()->insert_element("ui_elem2");
    com::Folder* ui_elem_folder1 = root()->push_back<com::Folder>(ui_elem1->name());
    com::Folder* ui_elem_folder2 = root()->push_back<com::Folder>(ui_elem2->name());
    gfx::ui_system()->set_parent(ui_elem1, camera_frame());
    gfx::ui_system()->set_parent(ui_elem2, camera_frame());

    // Create buffer
    gfx::Buffer* ui_buffer = gfx::buffer_generators()->insert_procedural_rectangle({ 1.0f, 1.0f }, "ui_buffer", { "ui" });

    // Set variables
    gfx::ui_system()->get_transform(ui_elem1)->set_position(vec2{ 0.03f, 0.02f});
    gfx::ui_system()->get_transform(ui_elem1)->set_scale(vec2{ 0.01f, 0.005f});

    gfx::ui_system()->get_transform(ui_elem2)->set_position(vec2{ -0.03f, 0.04f});
    gfx::ui_system()->get_transform(ui_elem2)->set_scale(vec2{ 0.01f, 0.005f});

    // Insert UI elements into object system
    gfx::ui_system()->insert_object(ui_elem1, ui_elem_folder1, forward_uniform_color_shader, ui_buffer);
    gfx::ui_system()->insert_object(ui_elem2, ui_elem_folder2, forward_uniform_color_shader, ui_buffer);

    // --- BEGIN directional light ---

    com::Frame* const frame_light = root()->push_back<com::Folder>("directional_light")->push_back<com::Frame>();
    com::Folder* const dir_light = gfx::light_system()->insert_light<gfx::DirectionalLight>(
            { "global", "directional" },
            frame_light,
            vec4{ 0.75f, 0.75f, 0.75f, 1 }
            );

    // --- END directional light ---

    // BEGIN Handlers
    ButtonHandler* button_handler = root()->find<ButtonHandler>(ButtonHandler::self_name());
    gfx::ui_system()->add_handler(ui_elem1, button_handler);
    gfx::ui_system()->add_handler(ui_elem2, button_handler);

    // END handlers

    gfx::object_system()->insert_light(test_box, dir_light);
    gfx::light_system()->insert_shadow_caster(dir_light, test_box);
    print_tree(*gfx::root(), std::cout);
    print_tree(*mak::root(), std::cout);

    std::shared_ptr<gfx::font_mono_props>  props = std::make_shared<gfx::font_mono_props>();

    gfx::load_font_mono_props(std::filesystem::canonical(osi::data()->dir()) / "age" / "font" / "Consolas_16.txt", *props);
}

void Presenter::release()
{
    osi::presenters()->find<com::Folder>("maker")->erase(self_name() + ".link");

    root()->erase("test_box");
    root()->erase("test_box2");
    root()->erase("ui_elem1");
    root()->erase("ui_elem2");
}

void Presenter::next_round()
{
    gfx::renderer()->clear_render_buffers();
    gfx::renderer()->present_collection(gfx::object_system()->objects());
}

}