#ifndef RENDERER_H_6A58EC30
#define RENDERER_H_6A58EC30

#include <SDL.h>
#include <SDL_image.h>
#include <SDL_ttf.h>
#include <stdexcept>
#include <memory>
#include <array>
#include <string_view>
#include <vector>
#include <string>
#include "consts.h"

class Game;

class sdl_error : public std::logic_error {
public:

  sdl_error() : std::logic_error(SDL_GetError())
  {
  }
};

class img_error : public std::logic_error {
public:

  img_error() : std::logic_error(IMG_GetError())
  {
  }
};

class ttf_error : public std::logic_error {
public:

  ttf_error() : std::logic_error(TTF_GetError())
  {
  }
};

class sdl_wrapper {
public:

  sdl_wrapper()
  {
    if (SDL_Init(SDL_INIT_VIDEO) != 0)
    {
      sdl_error ex;
      SDL_Quit();

    	throw ex;
    }
  }

  ~sdl_wrapper()
  {
    SDL_Quit();
  }
};

class img_wrapper {
public:

  img_wrapper()
  {
    if (IMG_Init(IMG_INIT_PNG) != IMG_INIT_PNG)
    {
      img_error ex;
      IMG_Quit();

      throw ex;
    }
  }

  ~img_wrapper()
  {
    IMG_Quit();
  }
};

class ttf_wrapper {
public:

  ttf_wrapper()
  {
    if (TTF_Init() != 0)
    {
      ttf_error ex;
      TTF_Quit();

    	throw ex;
    }
  }

  ~ttf_wrapper()
  {
    TTF_Quit();
  }
};

class window_deleter {
public:

  void operator()(SDL_Window* ptr)
  {
    SDL_DestroyWindow(ptr);
  }
};

using window_ptr = std::unique_ptr<SDL_Window, window_deleter>;

class renderer_deleter {
public:

  void operator()(SDL_Renderer* ptr)
  {
    SDL_DestroyRenderer(ptr);
  }
};

using renderer_ptr = std::unique_ptr<SDL_Renderer, renderer_deleter>;

class surface_deleter {
public:

  void operator()(SDL_Surface* ptr)
  {
    SDL_FreeSurface(ptr);
  }
};

using surface_ptr = std::unique_ptr<SDL_Surface, surface_deleter>;

class texture_deleter {
public:

  void operator()(SDL_Texture* ptr)
  {
    SDL_DestroyTexture(ptr);
  }
};

using texture_ptr = std::unique_ptr<SDL_Texture, texture_deleter>;

class font_deleter {
public:

  void operator()(TTF_Font* ptr) {
    TTF_CloseFont(ptr);
  }
};

using font_ptr = std::unique_ptr<TTF_Font, font_deleter>;

class Renderer {
public:

  Renderer();

  void renderGame(
    const Game& game,
    bool drawDark = true);

  void renderTitle(int num, double fade);

  TTF_Font* getFont() { return font_.get(); }

  void toggleFullscreen();

private:

  void loadTextureFromFile(std::string_view path, texture_ptr& texture);
  void loadAllTextures();

  sdl_wrapper sdl_;
  img_wrapper img_;
  ttf_wrapper ttf_;
  window_ptr win_;
  renderer_ptr ren_;
  font_ptr font_;

  texture_ptr playerFade_;
  texture_ptr lampFade_;
  texture_ptr dustFade_;
  texture_ptr playerSheet_;
  texture_ptr tileset_;
  texture_ptr lamp_;
  texture_ptr readInstruction_;
  texture_ptr menuBg_;
  texture_ptr help_;
  texture_ptr messageBg_;
  texture_ptr feather_;

  std::array<texture_ptr, NUM_TITLES> titles_;
  std::array<int, NUM_TITLES> titleWidths_;
  std::array<int, NUM_TITLES> titleHeights_;

  // Text rendering
  struct MessageCache {
    texture_ptr renderedTex;
    std::vector<int> charIndexToWidth;
    std::string line;
    std::string overflow;
  };

  void renderMessageLine(MessageCache& line, const std::string& text, const Game& game);

  MessageCache messageLines_[2];

  bool isFullscreen = false;

  void renderMenu(const Game& game);

  texture_ptr menu_;
  int menuWidth_ = 0;
  int menuHeight_ = 0;
  int menuSelected_ = 0;
};

#endif /* end of include guard: RENDERER_H_6A58EC30 */