#ifndef MENU_H_3F6E62B3
#define MENU_H_3F6E62B3

#include <functional>
#include <memory>
#include <string>
#include <vector>

class Game;

enum class MenuType {
  Command,
  Slider
};

struct MenuItem {
  MenuType type = MenuType::Command;
  std::string text;
  std::function<void(Game&)> activationFunction;
  bool playSfx = true;
  int value = 0;
  int maxValue = 0;
  std::function<void(MenuItem&)> selectionChanged;
};

class MenuBuilder {
public:

  MenuBuilder& Command(std::string text) {
    result_.type = MenuType::Command;
    result_.text = std::move(text);
    return *this;
  }

  MenuBuilder& ActivationFunction(std::function<void(Game&)> val) {
    result_.activationFunction = std::move(val);
    return *this;
  }

  MenuBuilder& SkipSoundEffect() {
    result_.playSfx = false;
    return *this;
  }

  MenuBuilder& Slider(std::string text) {
    result_.type = MenuType::Slider;
    result_.text = std::move(text);
    return *this;
  }

  MenuBuilder& InitialValue(int value) {
    result_.value = value;
    return *this;
  }

  MenuBuilder& MaxValue(int mv) {
    result_.maxValue = mv;
    return *this;
  }

  MenuBuilder& SelectionChangedFunction(std::function<void(MenuItem&)> val) {
    result_.selectionChanged = std::move(val);
    return *this;
  }

  MenuItem Build() const {
    return result_;
  }

private:

  MenuItem result_;
};

class Menu {
public:

  explicit Menu(const std::vector<MenuBuilder>& builders);

  const std::vector<MenuItem>& getItems() const { return items_; }

  std::vector<MenuItem>& getItems() { return items_; }

  int getCursorPosition() const { return cursor_; }

  void moveCursorUp();

  void moveCursorDown();

private:

  std::vector<MenuItem> items_;
  int cursor_ = 0;
};

#endif /* end of include guard: MENU_H_3F6E62B3 */