/*      $NetBSD: main.cc,v 1.7 2021/12/05 09:22:45 rillig Exp $ */

/*-
 * Copyright (c) 2003 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Christos Zoulas.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Main dots program
 */

#include "defs.h"
RCSID("$NetBSD: main.cc,v 1.7 2021/12/05 09:22:45 rillig Exp $")

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <err.h>
#include "algor.h"
#include "board.h"
#include "human.h"
#include "ttyscrn.h"

GAMESCREEN *sc;

// Print the command line usage
static void usage(char* pname)
{
    char* p = strrchr(pname, '/');
    if (p)
        p++;
    else
        p = pname;
    (void)::fprintf(stderr,
        "Usage: %s [-w] [-p <c|h><c|h>] [-n <ngames>] [<ydim> [<xdim>]]\n", p);
}

// Play a single game
static void play(BOARD& b, PLAYER* p[2])
{
    // Initialize
    b.init();
    p[0]->init();
    p[1]->init();
    b.paint();

    // Alternate turns between players, scoring each turn
    for (size_t i = 0;; i = (i + 1) & 1) {
        b.score(i, *p[i]);
        if (!p[i]->domove(b)) {
            // No more moves, game over
            break;
        }
        b.score(i, *p[i]);
    }

    // Find who won
    p[0]->wl(p[1]->getScore());
    p[1]->wl(p[0]->getScore());

    // Post scores
    b.score(0, *p[0]);
    b.score(1, *p[1]);

    // Post totals
    b.total(0, *p[0]);
    b.total(1, *p[1]);

    // Post games
    b.games(0, *p[0]);
    b.games(1, *p[1]);

    // Post ties
    b.ties(*p[0]);
}

int main(int argc, char** argv)
{
    size_t ny, nx, nn = 1, wt = 0;
    const char* nc = "ch";
    int c;
    int acs = 1;

    while ((c = getopt(argc, argv, "awp:n:")) != -1)
        switch (c) {
        case 'a':
            acs = 0;
            break;
        case 'w':
            wt++;
            break;

        case 'p':
            nc = optarg;
            break;

        case 'n':
            nn = atoi(optarg);
            break;

        default:
            usage(argv[0]);
            return 1;
        }

    // Get the size of the board if specified
    switch (argc - optind) {
    case 0:
        ny = nx = 3;
        break;

    case 1:
        ny = nx = atoi(argv[optind]);
        break;

    case 2:
        nx = atoi(argv[optind]);
        ny = atoi(argv[optind+1]);
        break;

    default:
        usage(argv[0]);
        return 1;
    }
    

    PLAYER* p[2];

    // Allocate players
    for (size_t i = 0; i < 2; i++) {
        char n = nc[1] == nc[0] ? i + '0' : nc[i];
        switch (nc[i]) {
        case 'c':
            p[i] = new ALGOR(n);
            break;

        case 'h':
            p[i] = new HUMAN(n);
            break;

        default:
            usage(argv[0]);
            return 1;
        }
    }

    sc = TTYSCRN::create(acs, &ny, &nx);
    if (sc == NULL)
        ::errx(1, "Dimensions too large for current screen.");

    BOARD b(ny, nx, sc);

    // Play games
    while (nn--) {
        play(b, p);
        if (wt)
            b.getmove();
    }

    if (wt == 0)
        b.getmove();
    // Cleanup
    delete sc;
    delete p[0];
    delete p[1];
    return 0;
}