#include <catch2/catch_test_macros.hpp>
#include <fmt/core.h>
#include <string>
#include "ansi_parser.hpp"
#include <codecvt>
#include <iostream>

#include "ftxui/dom/elements.hpp"  // for text, bgcolor, color, vbox, hbox, separator, operator|, Elements, Element, Fit, border
#include "ftxui/dom/node.hpp"      // for Render
#include "ftxui/screen/color.hpp"  // for Color, Color::Black, Color::Blue, Color::BlueLight, Color::Cyan, Color::CyanLight, Color::Default, Color::GrayDark, Color::GrayLight, Color::Green, Color::GreenLight, Color::Magenta, Color::MagentaLight, Color::Red, Color::RedLight, Color::White, Color::Yellow, Color::YellowLight, Color::Palette256, ftxui
#include <ftxui/screen/color_info.hpp>  // for ColorInfo
#include <ftxui/screen/screen.hpp>      // for Full, Screen
#include <ftxui/screen/terminal.hpp>  // for ColorSupport, Color, Palette16, Palette256, TrueColor

using namespace fmt;
using namespace ftxui;

std::string generate_colors() {
  REQUIRE(ftxui::Terminal::ColorSupport() == ftxui::Terminal::Color::TrueColor);

  const int max_value = 255;
  const int value_increment = 8;
  const int hue_increment = 6;
  int saturation = max_value;
  Elements array;
  int count = 0;

  for (int value = 0; value < max_value; value += 2 * value_increment) {
    Elements line;
    for (int hue = 0; hue < max_value; hue += hue_increment) {
      line.push_back(
          text("#")                                    //
          | color(Color::HSV(hue, saturation, value))  //
          | bgcolor(Color::HSV(hue, saturation, value + value_increment)));
      count++;
    }
    array.push_back(hbox(std::move(line)));
  }

  auto true_color_display = vbox({
      vbox(std::move(array)),
  });

  auto document = vbox({hbox({
      true_color_display,
  })});

  auto screen = Screen::Create(Dimension::Full(), Dimension::Fit(document));
  Render(screen, document);
  return screen.ToString();
}

TEST_CASE("test out ragel parser", "[gui]") {
  sf::Color default_fg(0,0,0);
  sf::Color default_bg(100,100,100);

  // this sets the Truecolor so need to do it first
  ANSIParser ansi(default_fg, default_bg);
  std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> $converter;
  std::string colors = generate_colors();
  std::wstring colors_utf = $converter.from_bytes(colors);

  std::cout << colors;


  bool good = ansi.parse(colors_utf, [&](sf::Color bgcolor, sf::Color color, wchar_t ch) {
      bool correct_char = ch == '#' || ch == ' ' || ch == '\n' || ch == '\r';
      REQUIRE(correct_char);
  });

  REQUIRE(good);
}