/* This file is a part of othello-ai-guile-c
 *
 * Copyright (C) 2021  Robby Zambito
 *
 * othello-ai-guile-c is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * othello-ai-guile-c is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#define _GNU_SOURCE

#include <getopt.h>
#include <errno.h>
#include <libguile.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "othello.h"

int main(int argc, char **argv) {
  static const struct option long_options[] = {
      {"help", no_argument, NULL, 'h'},
      {"player-one", required_argument, NULL, '1'},
      {"player-two", required_argument, NULL, '2'},
      {0, 0, 0, 0}};

  const char *usage =
      " -h --help              show help output\n"
      " -1 --player-one <file> specify a file to use for player one strategy\n"
      " -2 --player-two <file> specify a file to use for player two strategy\n";

  FILE *player_one_strategy = NULL;
  FILE *player_two_strategy = NULL;

  int c;
  while (1) {
    int option_index = 0;
    c = getopt_long(argc, argv, "h1:2:", long_options, &option_index);
    if (c == -1) {
      break;
    }
    errno = 0;
    switch (c) {
    case 'h':
      printf("%s", usage);
      exit(EXIT_SUCCESS);
    case '1':
      /*char *player_one_strategy_path = strdup(optarg);*/
      if (player_one_strategy != NULL) {
        fclose(player_one_strategy);
      }
      player_one_strategy = fopen(optarg, "r");
      if (errno != 0) {
          perror("Could not open player 1 strategy");
      }
      /*free(player_one_strategy_path);*/
      break;
    case '2':
      if (player_two_strategy != NULL) {
        fclose(player_two_strategy);
      }
      player_two_strategy = fopen(optarg, "r");
      if (errno != 0) {
          perror("Could not open player 2 strategy");
      }
      /*char *player_two_strategy_path = strdup(optarg);*/
      /*free(player_two_strategy_path);*/
      break;
    }
  }

  enum player_color winner = game_loop(player_one_strategy, player_two_strategy);

  switch (winner) {
  case WHITE:
    puts("Congratulations for winning player 1!");
    break;
  case BLACK:
    puts("Congratulations for winning player 2!");
    break;
  default:
    puts("The game ended with no winner.");
  }

  puts("Here was the final board:");
  print_board();

  return EXIT_SUCCESS;
}