Endgame-Analyzer/src/download.cpp

#include <boost/json/src.hpp>
#include <cpr/cpr.h>

#include "parse_game.h"
#include "make_state.h"

#include "download.h"


namespace Download
{

  std::optional<boost::json::object> download_game_json(int game_id)
  {
    std::string request_str = "https://hanab.live/export/" + std::to_string(game_id);
    cpr::Response r = cpr::Get(cpr::Url(request_str));
    if (r.header["content-type"] != "application/json; charset=utf-8")
    {
      return std::nullopt;
    }
    return boost::json::parse(r.text).as_object();
  }

  std::optional<boost::json::object> open_game_json(const char *filename)
  {
    std::ifstream file(filename);
    if (!file.is_open())
    {
      return std::nullopt;
    }
    std::string game_json((std::istreambuf_iterator<char>(file)), std::istreambuf_iterator<char>());
    return boost::json::parse(game_json).as_object();
  }

  Hanabi::Game get_game(int game_id, std::optional<uint8_t> score_goal)
  {
    std::optional<boost::json::object> const game_json = download_game_json(game_id);
    if (!game_json.has_value() or game_json.value().empty())
    {
      return {nullptr, {}};
    }

    Hanabi::GameInfo game_info = Parsing::parse_game(game_json.value());
    return {make_game_state(game_info.num_suits, game_info.num_players, game_info.deck, score_goal), game_info};
  }

  Hanabi::Game get_game(std::string const & filename, std::optional<uint8_t> score_goal)
  {
    std::optional<boost::json::object> const game_json = open_game_json(filename.c_str());
    if (!game_json.has_value() or game_json.value().empty())
    {
      return {nullptr, {}};
    }

    Hanabi::GameInfo game_info = Parsing::parse_game(game_json.value());
    return {make_game_state(game_info.num_suits, game_info.num_players, game_info.deck, score_goal), game_info};
  }
} // namespace Download