#include <fmt/core.h>
#include "dbc.hpp"
#include <SFML/Graphics.hpp>
#include <SFML/Graphics/RenderWindow.hpp>
#include "constants.hpp"

int main() {
  unsigned int font_size = 30;
  sf::Vector2u size{32, 32};

  sf::RenderTexture render{size};
  render.setSmooth(false);

  sf::Font font{FONT_FILE_NAME};
  font.setSmooth(false);

  wchar_t display_char = 3848;
  std::wstring content{display_char};
  sf::Text icon{font, content, font_size};

  icon.setFillColor({0, 0, 0, 255});
  render.draw(icon);
  render.clear({0,0,0,0});

  // fit the glyph in our box height
  auto glyph = font.getGlyph(content[0], font_size, false);

  while(glyph.textureRect.size.y < int(size.y)-1) {
    font_size++;
    glyph = font.getGlyph(content[0], font_size, false);
  }

  auto font_texture = font.getTexture(font_size);
  sf::Sprite sprite{font_texture, glyph.textureRect};
  auto t_size = glyph.textureRect.size;

  dbc::check(int(size.x - t_size.x) > 0, "font too big on x");
  dbc::check(int(size.y - t_size.y) > 0, "font too big on y");

  sf::Vector2f center{
    (float(size.x) - float(t_size.x)) / 2.0f,
    (float(size.y) - float(t_size.y)) / 2.0f};

  sf::Vector2f scale{float(size.x) / float(t_size.x), float(size.y) / float(t_size.y)};

  fmt::println("scale={},{}; t_size={},{}; size={},{}",
      scale.x, scale.y, t_size.x, t_size.y, size.x, size.y);

  sprite.setScale(scale);

  sprite.setPosition({0,0});
  sprite.setColor({0, 0, 0, 255});

  render.draw(sprite);
  render.display();
  sf::Image out_img = render.getTexture().copyToImage();

  bool worked = out_img.saveToFile("./screenshot.png");
  dbc::check(worked, "Failed to write screenshot.png");

  return 0;
}