#include "guecs/sfml/backend.hpp"
#include "guecs/sfml/components.hpp"
#include "guecs/ui.hpp"
#include <fmt/xchar.h>
#include <deque>

constexpr const int WINDOW_WIDTH=1280;
constexpr const int WINDOW_HEIGHT=720;
constexpr const int FRAME_LIMIT=60;
constexpr const bool VSYNC=true;

using std::string, std::wstring;

enum class Event {
  CLICKER, A_BUTTON
};


struct ClickerUI {
  guecs::UI $gui;

  ClickerUI() {
    $gui.position(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
    $gui.layout(
        "[_|*%(300,400)clicker|_|_|_]"
        "[_|_               |_|_|_]"
        "[_|_               |_|_|_]"
        "[_|_               |_|_|_]"
        "[a1|a2|a3|a4|a5]");
  }

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

    for(auto& [name, cell] : $gui.cells()) {
      auto id = $gui.entity(name);
      if(name != "clicker") {
        $gui.set<guecs::Rectangle>(id, {});
        $gui.set<guecs::Effect>(id, {});
        $gui.set<guecs::Sprite>(id, { "clicker_treat_bone" });
        fmt::println("button dim: {},{}", cell.w, cell.h);
        $gui.set<guecs::Clickable>(id, {
            [&](auto, auto) { handle_button(Event::A_BUTTON); }
        });
      } else {
        $gui.set<guecs::Sprite>(id, {"clicker_the_dog"});
        $gui.set<guecs::Sound>(id, {"clicker_bark"});
        $gui.set<guecs::Effect>(id, {0.1f, "ui_shader"});
        $gui.set<guecs::Clickable>(id, {
            [&](auto, auto) { handle_button(Event::CLICKER); }
        });
      }
    }

    $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);
  }

  void handle_button(Event ev) {
    using enum Event;
    switch(ev) {
      case CLICKER:
        fmt::println("CLICKER LOVES YOU!");
        break;

      case A_BUTTON:
        fmt::println("a button clicked");
        break;

      default:
        assert(false && "invalid event");
    }
  }
};

int main() {
  sfml::Backend backend;
  guecs::init(&backend);

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

  ClickerUI clicker;
  clicker.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);
          clicker.mouse(pos.x, pos.y, false);
        }
      }
    }

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