#include "imgui/imgui.h"
#include "imgui/imgui-SFML.h"

#include <SFML/Graphics/RenderWindow.hpp>
#include <SFML/Graphics/Texture.hpp>
#include <SFML/Graphics/Sprite.hpp>
#include <SFML/System/Clock.hpp>
#include <SFML/Window/Event.hpp>

int main()
{
    sf::RenderWindow window(sf::VideoMode(640, 480), "");
    window.setVerticalSyncEnabled(true);
    ImGui::SFML::Init(window);

    sf::Texture texture;
    texture.loadFromFile("image.jpg");

    sf::Sprite sprite;
    sprite.setTexture(texture);

    sf::Color bgColor;

    float color[3] = { 0.f, 0.f, 0.f };

    // let's use char array as buffer, see next part
    // for instructions on using std::string with ImGui
    char windowTitle[255] = "ImGui + SFML = <3";

    window.setTitle(windowTitle);

    sf::Clock deltaClock;
    while (window.isOpen()) {
        sf::Event event;
        while (window.pollEvent(event)) {
            ImGui::SFML::ProcessEvent(event);

            if (event.type == sf::Event::Closed) {
                window.close();
            }
        }

        ImGui::SFML::Update(deltaClock.restart());

        ImGui::Begin("Sample window"); // begin window

                                       // Background color edit
        if (ImGui::ColorEdit3("Background color", color)) {
            // this code gets called if color value changes, so
            // the background color is upgraded automatically!
            bgColor.r = static_cast<sf::Uint8>(color[0] * 255.f);
            bgColor.g = static_cast<sf::Uint8>(color[1] * 255.f);
            bgColor.b = static_cast<sf::Uint8>(color[2] * 255.f);
        }

        // Window title text edit
        ImGui::InputText("Window title", windowTitle, 255);

        if (ImGui::Button("Update window title")) {
            // this code gets if user clicks on the button
            // yes, you could have written if(ImGui::InputText(...))
            // but I do this to show how buttons work :)
            window.setTitle(windowTitle);
        }

        // Demo
        // ImGui::ShowTestWindow();

        ImGui::End(); // end window

        window.clear(bgColor); // fill background with color
        ImGui::Render();
        window.draw(sprite);
        window.display();
    }

    ImGui::SFML::Shutdown();
}