/*
 *  Empire - A multi-player, client/server Internet based war game.
 *  Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
 *                           Ken Stevens, Steve McClure
 *
 *  This program 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 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  ---
 *
 *  See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
 *  related information and legal notices. It is expected that any future
 *  projects/authors will amend these files as needed.
 *
 *  ---
 *
 *  mobu.c: Adjust mobility updating
 * 
 *  Known contributors to this file:
 *     Steve McClure, 1996
 */

#include "misc.h"
#include "player.h"
#include "var.h"
#include "xy.h"
#include "sect.h"
#include "nsc.h"
#include "nat.h"
#include "deity.h"
#include "path.h"
#include "file.h"
#include "commands.h"
#include "optlist.h"
#include "prototypes.h"

#include <stdio.h>

int
mobupdate(void)
{
    FILE *fp;
    long minites;
    extern int updating_mob;
    struct mob_acc_globals timestamps;
    long now;

    if (!opt_MOB_ACCESS) {
	pr("Command invalid - MOB_ACCESS is not enabled.\n");
	return RET_FAIL;
    }
    if (!player->argp[1])
	return RET_SYN;
    if (*player->argp[1] == 'c')
	minites = -1;
    else
	minites = atol(player->argp[1]) * 60;
    time(&now);
#if !defined(_WIN32)
    if ((fp = fopen(timestampfil, "r+")) == NULL) {
#else
    if ((fp = fopen(timestampfil, "r+b")) == NULL) {
#endif
	logerror("Unable to edit timestamp file.");
    } else {
	rewind(fp);
	fread(&timestamps, sizeof(timestamps), 1, fp);
	if (minites < 0) {
	    fclose(fp);
	    if (updating_mob)
		pr("Mobility updating is enabled.");
	    else {
		pr("Mobility updating will come back on around %s",
		   ctime(&timestamps.starttime));
		pr("within 3 minutes, depending on when the server checks.");
	    }
	    return 0;
	}
	timestamps.timestamp = now;
	timestamps.starttime = now + minites;
	rewind(fp);
	fwrite(&timestamps, sizeof(timestamps), 1, fp);
	fclose(fp);
	if (now >= timestamps.starttime) {
	    pr("Turning on mobility updating.");
	    update_all_mob();
	    updating_mob = 1;
	} else if (updating_mob == 1) {
	    pr("Turning off mobility updating.\n\r");
	    pr("Mobility updating will come back on around %s",
	       ctime(&timestamps.starttime));
	    pr("within 3 minutes, depending on when the server checks.");
	    update_all_mob();
	    updating_mob = 0;
	} else if (updating_mob == 0) {
	    pr("Mobility updating is already off.\n\r");
	    pr("Mobility updating will come back on around %s",
	       ctime(&timestamps.starttime));
	    pr("within 3 minutes, depending on when the server checks.");
	}
    }

    return 0;
}