/*
 *  Empire - A multi-player, client/server Internet based war game.
 *  Copyright (C) 1986-2007, 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 files README, COPYING and CREDITS in the root of the source
 *  tree for related information and legal notices.  It is expected
 *  that future projects/authors will amend these files as needed.
 *
 *  ---
 *
 *  marketup.c: Market updater thread
 * 
 *  Known contributors to this file:
 *     Steve McClure, 1996
 */

#include <config.h>

#include "empthread.h"
#include "file.h"
#include "optlist.h"
#include "player.h"
#include "prototypes.h"
#include "server.h"

static void
check_all_markets(void)
{
    check_market();
    check_trade();

    ef_flush(EF_NATION);
    ef_flush(EF_SECTOR);
    ef_flush(EF_PLANE);
    ef_flush(EF_SHIP);
    ef_flush(EF_LAND);
    ef_flush(EF_COMM);
    ef_flush(EF_TRADE);
}

/*ARGSUSED*/
static void
market_update(void *unused)
{
    time_t now;

    player->proc = empth_self();
    player->cnum = 0;
    player->god = 1;

    while (1) {
	time(&now);
	check_all_markets();
	now += 300;		/* Every 5 minutes */
	empth_sleep(now);
    }
    /*NOTREACHED*/
}

void
market_init(void)
{
    struct player *dp;

    if (!opt_MARKET)
	return;
    dp = player_new(-1);
    if (!dp)
	exit_nomem();
    if (!empth_create(PP_UPDATE, market_update, 50 * 1024, 0,
		      "MarketUpdate", "Updates the market", dp))
	exit_nomem();
}