#include <stdlib.h>
#include <stdio.h>
#include <getopt.h>
#include <stdbool.h>
#include <assert.h> 
#include <string.h>

void help(){
    printf("usage: utictactoe ([-i LEVEL|-x N|-o N|-v|-V|-h] | -c FILE)\n");
    printf("Play a utictactoe game with human or program players.\n");
    printf("-i, --inception-level LEVEL deepness of the game (min=1, max=3 (default=2))\n");
    printf("-x, --cross-ai N set tactic of cross player 'X'\n");
    printf("-o, --round-ai N set tactic of round player 'O'\n");
    printf("-c, --contest enable 'contest' mode\n");
    printf("-v, --verbose verbose output\n");
    printf("-V, --version display version and exit\n");
    printf("-h, --help display this help and exit\n");
    printf("Tactics list: random (0), clever (1)\n");
}
int main(int argc, char* argv[]) {
    int optc;
    int inception_level = 0;
    bool contest, round_ai, cross_ai  = false;

    char * end_ptr;
    static struct option long_opts[] =
        {
          {"inception-level",   optional_argument,  0, 'i'},
          {"cross-ai",          no_argument,        0, 'x'},
          {"round-ai",          no_argument,        0, 'o'},
          {"contest",           no_argument,        0, 'c'},
          {"verbose",           no_argument,        0, 'v'},
          {"version",           no_argument,        0, 'V'},
          {"help",              no_argument,        0, 'h'},
          {0, 0, 0, 0}
        };
    while ((optc = getopt_long (argc, argv, "i:xocvVh", long_opts, NULL)) != -1){
        switch (optc) {
        case 'i': /* 'a' option */
            printf ("Inception activated\n");
            if ( optarg ) {
                inception_level = strtol(optarg, &end_ptr, 10);
                assert ( strcmp(end_ptr,"\0") == 0);
                assert ( inception_level >= 1 );
                assert ( inception_level <= 3 );
            }
            else {
                inception_level = 2;
            }  
            break;
        case 'x': /* 'a' option */
            printf ("contest activated\n");
            cross_ai = true;
            break;

        case 'o': /* 'a' option */
            printf ("contest activated\n");
            round_ai = true;
            break;

        case 'c': /* 'a' option */
            printf ("contest activated\n");
            contest = true;
            break;

        case 'h':
            help();
            exit(EXIT_SUCCESS);

        default:
            exit (EXIT_FAILURE);
        }
    }
    printf("Hello World!\n");
}