#include "game_level.hpp"
#include "levelmanager.hpp"
#include "components.hpp"

namespace Game {
  using std::shared_ptr, std::string, std::make_shared;

  shared_ptr<LevelManager> LEVELS;
  bool initialized = false;

  void init() {
    if(!initialized) {
      LEVELS = make_shared<LevelManager>();
      initialized = true;
    }
  }

  LevelManager& get_the_manager() {
    dbc::check(initialized, "Forgot to call Game::init()");
    return *LEVELS;
  }

  shared_ptr<DinkyECS::World> current_world() {
    dbc::check(initialized, "Forgot to call Game::init()");
    return current().world;
  }

  shared_ptr<gui::BossFightUI> create_bossfight() {
    dbc::check(initialized, "Forgot to call Game::init()");
    return LEVELS->create_bossfight(current_world());
  }

  GameLevel& create_level() {
    dbc::check(initialized, "Forgot to call Game::init()");
    LEVELS->create_level(current_world());
    return next();
  }

  GameLevel &next() {
    dbc::check(initialized, "Forgot to call Game::init()");
    return LEVELS->next();
  }

  GameLevel &previous() {
    dbc::check(initialized, "Forgot to call Game::init()");
    return LEVELS->previous();
  }

  GameLevel &current() {
    dbc::check(initialized, "Forgot to call Game::init()");
    return LEVELS->current();
  }

  size_t current_index() {
    dbc::check(initialized, "Forgot to call Game::init()");
    return LEVELS->current_index();
  }

  GameLevel &get(size_t index) {
    dbc::check(initialized, "Forgot to call Game::init()");
    return LEVELS->get(index);
  }

  DinkyECS::Entity spawn_enemy(const std::string& named) {
    dbc::check(initialized, "Forgot to call Game::init()");
    return LEVELS->spawn_enemy(named);
  }

  components::Position& player_position() {
    dbc::check(initialized, "Forgot to call Game::init()");
    auto world = current_world();
    auto& player = world->get_the<components::Player>();
    return world->get<components::Position>(player.entity);
  }

  DinkyECS::Entity the_player() {
    dbc::check(initialized, "Forgot to call Game::init()");
    return current().player;
  }
}