#include "sfml/components.hpp"
#include "sfml/sound.hpp"
#include "sfml/shaders.hpp"
#include "sfml/textures.hpp"
#include "guecs.hpp"
#include "constants.hpp"

constexpr const int WINDOW_WIDTH=300;
constexpr const int WINDOW_HEIGHT=400;

struct Calculator {
  guecs::UI $gui;

  Calculator() {
    $gui.position(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
    $gui.layout(
        "[readout]"
        "[btn7|btn8|btn9|mult]"
        "[btn4|btn5|btn6|minus]"
        "[btn1|btn2|btn3|plus]"
        "[neg|btn0|dot|eq]");
  }

  void init() {
    $gui.set<guecs::Background>($gui.MAIN, {});

    for(auto& [name, cell] : $gui.cells()) {
      auto id = $gui.entity(name);
      $gui.set<guecs::Rectangle>(id, {});
      $gui.set<guecs::Effect>(id, {});
      $gui.set<guecs::Label>(id, {guecs::to_wstring(name)});
      $gui.set<guecs::Clickable>(id, {
          [=](auto, auto) { fmt::println("clicked {}", name); }
      });
    }

    $gui.init();
  }

  void render(sf::RenderWindow& window) {
    $gui.render(window);
    // $gui.debug_layout(window);
  }

  void mouse(float x, float y, bool hover) {
    $gui.mouse(x, y, hover);
  }
};


int main() {
  sound::init();
  shaders::init();
  textures::init();

  sf::RenderWindow window(sf::VideoMode({WINDOW_WIDTH, WINDOW_HEIGHT}), "LEL-GUECS Calculator");
  window.setFramerateLimit(FRAME_LIMIT);
  window.setVerticalSyncEnabled(VSYNC);

  Calculator calc;
  calc.init();

  while(window.isOpen()) {
    while (const auto event = window.pollEvent()) {
      if(event->is<sf::Event::Closed>()) {
        window.close();
      }

      if(const auto* mouse = event->getIf<sf::Event::MouseButtonPressed>()) {
        if(mouse->button == sf::Mouse::Button::Left) {
          sf::Vector2f pos = window.mapPixelToCoords(mouse->position);
          calc.mouse(pos.x, pos.y, false);
        }
      }
    }

    calc.render(window);
    window.display();
  }
}