//
// Created by maximilian on 7/13/23.
//

#include <boost/rational.hpp>
#include <cstdint>
#include <iostream>
#include <optional>
#include <vector>

#include "game_state.h"
#include "download.h"
#include "myassert.h"
#include "cli_interface.h"


namespace Hanabi {
    void download(std::variant<int, const char*> game_id, int turn) {
        auto game = Download::get_game(game_id, turn);
        std::cout << "Analysing state: " << std::endl << *game << std::endl;
        auto res = game->evaluate_state();
        std::cout.precision(10);
        std::cout << std::endl;
        std::cout << "Probability with optimal play: " << res << std::endl;
        std::cout << "Enumerated " << game->enumerated_states() << " states" << std::endl;
        std::cout << "Visited " << game->position_tablebase().size() << " unique game states. " << std::endl;
        unsigned long biggest_key = 0;
        for(const auto& [key, prob] : game->position_tablebase()) {
            biggest_key = std::max(biggest_key, key);
        }
        std::cout << "Biggest key generated is " << biggest_key << std::endl;
        std::cout << std::endl;

        auto game_shared = std::shared_ptr<HanabiStateIF>(game.release());
        auto states = game_shared->possible_next_states(0, false);
        cli(game_shared);
    }

    void print_sizes() {
      std::cout << "size of card -> hand map: " << sizeof(HanabiState<5, 3, 4>)
                << std::endl;

      unsigned exp = 32;
      std::cout << "Pair size: " << sizeof(std::pair<std::uint32_t, float>)
                << std::endl;
      std::cout << sizeof(boost::rational<int>) << std::endl;
      std::cout << (1ul << exp) << std::endl;
    }

    void print_usage(const char* program_name) {
        std::cout << "Usage: " << program_name << " GAME_ID TURN" << std::endl;
    }

}

#define CHECK(test, condition) if (!(condition)) { std::cerr << "Test " << (test) << " failed." << std::endl; } else { std::cout << "Test " << (test) << " succeeded." << std::endl; }

void test() {
    {
        auto game = Download::get_game("in/1005195", 43);
        auto res = game->evaluate_state();
        CHECK("1005195", res == Hanabi::probability_t (7,8));
    }
}

void check_games(unsigned num_players, unsigned max_draw_pile_size, unsigned first_game = 0, unsigned last_game = 9999) {

   std::vector<std::vector<Hanabi::probability_t>> winning_percentages(last_game + 2);

    for(size_t draw_pile_size = 0; draw_pile_size <= max_draw_pile_size; draw_pile_size++) {
        Hanabi::probability_t total_chance = 0;
        const std::string output_fname = "games_" + std::to_string(num_players) + "p_draw_size_" + std::to_string(draw_pile_size) + ".txt";
        std::ofstream file (output_fname);
        for(size_t game_id = first_game; game_id <= last_game; game_id++) {
            const std::string input_fname = "json/" + std::to_string(num_players) + "p/" + std::to_string(game_id) + ".json";
            auto game = Download::get_game(input_fname.c_str(), 50, draw_pile_size);
            const Hanabi::probability_t chance = game->evaluate_state();
            winning_percentages[game_id].push_back(chance);
            if(chance != 1) {
                file << "Game " << game_id << ": " << chance << std::endl;
                file << *game << std::endl << std::endl;
            }
            std::cout << "Finished game " << game_id << " with draw pile size " << draw_pile_size << ": " << chance << std::endl;

            total_chance += chance;
       }
       const Hanabi::probability_t total_average = total_chance / (last_game - first_game + 1);
       winning_percentages.back().push_back(total_average);
       file << "Total chance found over " << last_game - first_game + 1 << " many games: " << total_average << std::endl;
       file.close();
    }
    const std::string results_file_name {"results_" + std::to_string(num_players) + "p.txt"};
    std::ofstream results_file (results_file_name);
    results_file << "game_id, ";
    for(size_t draw_pile_size = 0; draw_pile_size <= max_draw_pile_size; draw_pile_size++) {
        results_file << std::to_string(draw_pile_size) << ", ";
    }
    results_file << "\n";
    for(size_t game_id = first_game; game_id <= last_game; game_id++) {
        results_file << game_id << ", ";
        for(size_t draw_pile_size = 0; draw_pile_size <= max_draw_pile_size; draw_pile_size++) {
            results_file << winning_percentages[game_id][draw_pile_size] << ", ";
        }
        results_file << std::endl;
    }
    results_file << "total, ";
    for(size_t draw_pile_size = 0; draw_pile_size <= max_draw_pile_size; draw_pile_size++) {
        results_file << winning_percentages.back()[draw_pile_size] << ", ";
    }
    results_file << std::endl;
    results_file.close();
}

int main(int argc, char *argv[]) {
    #ifndef NDEBUG
      test();
    #endif
  if(argc == 3) {
      std::string game(argv[1]);
      std::string turn (argv[2]);
      try {
          Hanabi::download(std::stoi(game), std::stoi(turn));
      } catch(std::invalid_argument&) {
          Hanabi::download(game.c_str(), std::stoi(turn));
      }
  } else if (argc == 2) {
      int player_count = std::stoi(argv[1]);
      if (player_count == 3) {
          check_games(3, 10);
      } else if (player_count == 4) {
          check_games(4, 9);
      } else if (player_count == 5) {
          check_games(5, 9);
      } else if (player_count == 2) {
          check_games(2, 10);
      }
  } else {
      Hanabi::print_usage(argv[0]);
  }
  return 0;
}