#include "ecs_gui.hpp"
#include "constants.hpp"

GUECS::GUECS() {
  $font = make_shared<sf::Font>(FONT_FILE_NAME);
}

void GUECS::position(int x, int y, int width, int height) {
  $parser.position(x, y, width, height);
}

void GUECS::layout(std::string grid) {
  $grid = grid;
  $parser.parse($grid);
}

DinkyECS::Entity GUECS::entity(std::string name) {
  auto entity = $world.entity();
  $world.set<CellName>(entity, {name});
  return entity;
}

void GUECS::init(TexturePack& textures) {
  $world.query<lel::Cell, Rectangle>([](const auto &, auto& cell, auto& rect) {
    rect.init(cell);
  });

  $world.query<lel::Cell, Textual>([this](const auto &, auto& cell, auto& text) {
    text.init(cell, $font);
  });

  $world.query<lel::Cell, Sprite>([&](const auto &, auto &cell, auto &sprite) {
      auto sprite_texture = textures.get(sprite.name);
      sprite.texture = sprite_texture.texture;
      sprite.sprite = make_shared<sf::Sprite>(*sprite.texture);
      sprite.sprite->setPosition({float(cell.x + 5), float(cell.y + 5)});
      auto size = sprite.texture->getSize();
      sprite.sprite->setScale({float(cell.w - 10) / size.x, float(cell.h - 10) / size.y});
  });
}

void GUECS::render(sf::RenderWindow& window) {
  $world.query<lel::Cell, Meter>([&](const auto &ent, const auto& cell, const auto &meter) {
      if($world.has<Rectangle>(ent)) {
        float level = meter.percent * float(cell.w);
        auto& target = $world.get<Rectangle>(ent);
        // ZED: this 6 is a border width, make it a thing
        target.shape->setSize({std::max(level, 0.0f), float(cell.h - 6)});
      }
  });

  $world.query<Rectangle>([&](const auto &, const auto& rect) {
      window.draw(*rect.shape);
  });

  $world.query<Sprite>([&](const auto &, const auto& sprite) {
      window.draw(*sprite.sprite);
  });

  $world.query<Textual>([&](const auto &, const auto& text) {
      window.draw(*text.text);
  });
}

void GUECS::mouse(sf::RenderWindow &window) {
  if(sf::Mouse::isButtonPressed(sf::Mouse::Button::Left)) {
    sf::Vector2f pos = window.mapPixelToCoords(sf::Mouse::getPosition(window));
    $world.query<lel::Cell, Clickable>([&](const auto &ent, auto& cell, auto &clicked) {
      if((pos.x >= cell.x && pos.x <= cell.x + cell.w) &&
          (pos.y >= cell.y && pos.y <= cell.y + cell.h))
      {
        auto& cn = $world.get<CellName>(ent);
        fmt::println("clicked on entity {} with name {} and event {}",
            ent, cn.name, clicked.event);
      }
    });
  }
}