/*
 * Copyright (C) 2000,2001	Onlyer	(onlyer@263.net)
 *
 * 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.
 */
#include "common/setup_before.h"
#include "setup.h"

#ifdef STDC_HEADERS
# include <stdlib.h>
#else
# ifdef HAVE_MALLOC_H
#  include <malloc.h>
# endif
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#else
# ifdef HAVE_STRINGS_H
#  include <strings.h>
# endif
# ifdef HAVE_MEMORY_H
#  include <memory.h>
# endif
#endif
#ifdef TIME_WITH_SYS_TIME
# include <time.h>
# include <sys/time.h>
#else
# ifdef HAVE_SYS_TIME_H
#  include <sys/time.h>
# else
#  include <time.h>
# endif
#endif
#include "prefs.h"
#include "game.h"
#include "common/list.h"
#include "common/eventlog.h"
#include "common/setup_after.h"

static t_list		* gamelist_head=NULL;
static t_elem const	* gamelist_curr_elem=NULL;
static unsigned int	total_game=0;
static unsigned int	game_id=0;
static t_game_charinfo * game_find_character(t_game * game, char const * charname);

extern t_list * gamelist(void)
{
	return gamelist_head;
}

extern t_elem const * gamelist_get_curr_elem(void)
{
	return gamelist_curr_elem;
}

extern void gamelist_set_curr_elem(t_elem const * elem)
{
	gamelist_curr_elem=elem;
	return;
}

extern int gamelist_create(void)
{
	if (!(gamelist_head=list_create())) return -1;
	return 0;
}

extern int gamelist_destroy(void)
{
	t_game * game;

	BEGIN_LIST_TRAVERSE_DATA(gamelist_head, game)
	{
		game_destroy(game);
	}
	END_LIST_TRAVERSE_DATA();

	if (list_destroy(gamelist_head)<0) {
		log_error("error destroy connection list");
		return -1;
	}
	gamelist_head=NULL;
	return 0;
}

extern t_game * gamelist_find_game(char const * gamename)
{
	t_game * game;

	ASSERT(gamename,NULL);
	BEGIN_LIST_TRAVERSE_DATA(gamelist_head,game)
	{
		if (!strcasecmp(game->name,gamename)) return game;
	}
	END_LIST_TRAVERSE_DATA()
	return NULL;
}

extern t_game * gamelist_find_game_by_id(unsigned int id)
{
	t_game * game;

	BEGIN_LIST_TRAVERSE_DATA(gamelist_head,game)
	{
		if (game->id==id) return game;
	}
	END_LIST_TRAVERSE_DATA()
	return NULL;
}

extern t_game * gamelist_find_game_by_d2gs_and_id(unsigned int d2gs_id, unsigned int d2gs_gameid)
{
	t_game * game;

	BEGIN_LIST_TRAVERSE_DATA(gamelist_head,game)
	{
		if (!game->created) continue;
		if (game->d2gs_gameid!=d2gs_gameid) continue;
		if (d2gs_get_id(game->d2gs) != d2gs_id) continue;
		return game;
	}
	END_LIST_TRAVERSE_DATA()
	return NULL;
}

extern t_game * gamelist_find_character(char const * charname)
{
	t_game	* game;

	ASSERT(charname,NULL);
	BEGIN_LIST_TRAVERSE_DATA(gamelist_head, game)
	{
		if (game_find_character(game,charname)) return game;
	}
	END_LIST_TRAVERSE_DATA();
	return NULL;
}

extern void gamelist_check_voidgame(void)
{
	t_game	* game;
	time_t	now;
	unsigned int timeout;

	timeout=prefs_get_max_game_idletime();
	if (!timeout) return;
	now=time(NULL);
	BEGIN_LIST_TRAVERSE_DATA(gamelist_head, game)
	{
		if (!game->currchar) {
			if ((now-game->lastaccess_time)>timeout) {
				log_info("game %s is empty too long time,destroying it",game->name);
				game_destroy(game);
			}
		}
	}
	END_LIST_TRAVERSE_DATA()
}

extern t_game * game_create(char const * gamename, char const * gamepass, char const * gamedesc,\
			unsigned int gameflag)
{
	t_game	* game;
	time_t	now;

	ASSERT(gamename,NULL);
	ASSERT(gamepass,NULL);
	ASSERT(gamedesc,NULL);
	if (gamelist_find_game(gamename)) {
		log_error("game %s already exist",gamename);
		return NULL;
	}
	if (!(game=malloc(sizeof(t_game)))) {
		log_error("error allocate memory for game");
		return NULL;
	}
	if (!(game->name=strdup(gamename))) {
		free(game);
		return NULL;
	}
	if (!(game->pass=strdup(gamepass))) {
		free((void *)game->name);
		free(game);
		return NULL;
	}
	if (!(game->desc=strdup(gamedesc))) {
		free((void *)game->name);
		free((void *)game->pass);
		free(game);
		return NULL;
	}
	if (!(game->charlist=list_create())) {
		free((void *)game->name);
		free((void *)game->pass);
		free((void *)game->desc);
		free(game);
		return NULL;
	}
	now=time(NULL);
	game_id++;
	if (game_id==0) game_id=1;
	game->id=game_id;
	game->created=0;
	game->create_time=now;
	game->lastaccess_time=now;
	game->gameflag=gameflag;
	game->charlevel=0;
	game->leveldiff=0;
	game->d2gs_gameid=0;
	game->d2gs=NULL;
	game->maxchar=MAX_CHAR_PER_GAME;
	game->currchar=0;
	if (list_prepend_data(gamelist_head,game)<0) {
		log_error("error prepend game to game list");
		list_destroy(game->charlist);
		free((void *)game->desc);
		free((void *)game->pass);
		free((void *)game->name);
		free(game);
		return NULL;
	}
	total_game++;
	log_info("game %s pass=%s desc=%s gameflag=0x%08X created (%d total)",gamename,gamepass,\
		gamedesc,gameflag,total_game);
	return game;
}

extern int game_destroy(t_game * game)
{
	t_elem		* curr;
	t_game_charinfo	* charinfo;

	ASSERT(game,-1);
	if (gamelist_curr_elem && (game==elem_get_data(gamelist_curr_elem))) {
		gamelist_curr_elem=elem_get_next_const(gamelist_curr_elem);
	}
	if (list_remove_data(gamelist_head,game)<0) {
		log_error("error remove game %s on game list",game->name);
		return -1;
	}
	total_game--;
	log_info("game %s removed from game list (%d left)",game->name,total_game);
	LIST_TRAVERSE(game->charlist,curr)
	{
		if ((charinfo=elem_get_data(curr))) {
			if (charinfo->charname) free((void *)charinfo->charname);
			free(charinfo);
		}
		list_remove_elem(game->charlist,curr);
	}
	list_destroy(game->charlist);

	if (game->d2gs) {
		d2gs_add_gamenum(game->d2gs,-1);
		if (d2gs_get_gamenum(game->d2gs) < d2gs_get_maxgame(game->d2gs)) {
			gqlist_check_creategame();
		}
	}
	if (game->desc) free((void *)game->desc);
	if (game->pass) free((void *)game->pass);
	if (game->name) free((void *)game->name);
	free(game);
	return 0;
}

static t_game_charinfo * game_find_character(t_game * game, char const * charname)
{
	t_game_charinfo * charinfo;

	ASSERT(game,NULL);
	ASSERT(charname,NULL);
	if (!game->charlist) {
		log_error("got NULL character list in game %s",game->name);
		return NULL;
	}
	BEGIN_LIST_TRAVERSE_DATA(game->charlist,charinfo)
	{
		if (!charinfo->charname) continue;
		if (!strcmp_charname(charinfo->charname,charname)) return charinfo;
	}
	END_LIST_TRAVERSE_DATA()
	return NULL;
}

extern int game_add_character(t_game * game, char const * charname, unsigned char class,\
				unsigned char level)
{
	t_game_charinfo	* charinfo;

	ASSERT(game,-1);
	ASSERT(charname,-1);
	charinfo=game_find_character(game,charname);
	if (charinfo) {
		log_info("updating character %s (game %s) status", charname,game->name);
		charinfo->class=class;
		charinfo->level=level;
		return 0;
	}
	if (!(charinfo=malloc(sizeof(t_game_charinfo)))) {
		log_error("error allocate charinfo");
		return -1;
	}
	if (!(charinfo->charname=strdup(charname))) {
		return -1;
	}
	charinfo->class=class;
	charinfo->level=level;
	if (list_append_data(game->charlist,charinfo)<0) {
		log_error("error add character %s to game %s",charname,game->name);
		free(charinfo);
		return -1;
	}
	game->currchar++;
	game->lastaccess_time=time(NULL);
	log_info("added character %s to game %s (%d total)",charname,game->name,game->currchar);
	return 0;
}

extern int game_del_character(t_game * game, char const * charname)
{
	t_game_charinfo * charinfo;

	ASSERT(game,-1);
	ASSERT(charname,-1);
	if (!(charinfo=game_find_character(game,charname))) {
		log_error("character %s not found in game %s",charname,game->name);
		return -1;
	}
	if (list_remove_data(game->charlist,charinfo)) {
		log_error("error remove character %s from game %s",charname,game->name);
		return -1;
	}
	if (charinfo->charname) free((void *)charinfo->charname);
	free(charinfo);
	game->currchar--;
	game->lastaccess_time=time(NULL);
	log_info("removed character %s from game %s (%d left)",charname,game->name,game->currchar);
	return 0;
}

extern int game_set_d2gs_gameid(t_game * game, unsigned int d2gs_gameid)
{
	ASSERT(game,-1);
	game->d2gs_gameid=d2gs_gameid;
	return 0;
}

extern unsigned int game_get_d2gs_gameid(t_game const * game)
{
	ASSERT(game,0);
	return game->d2gs_gameid;
}

extern unsigned int game_get_id(t_game const * game)
{
	ASSERT(game,0);
	return game->id;
}

extern int game_set_d2gs(t_game * game, t_d2gs * gs)
{
	ASSERT(game,-1);
	game->d2gs=gs;
	return 0;
}

extern t_d2gs * game_get_d2gs(t_game const * game)
{
	ASSERT(game,NULL);
	return game->d2gs;
}

extern int game_set_leveldiff(t_game * game, unsigned int leveldiff)
{
	ASSERT(game,-1);
	game->leveldiff=leveldiff;
	return 0;
}

extern int game_set_charlevel(t_game * game, unsigned int charlevel)
{
	ASSERT(game,-1);
	game->charlevel=charlevel;
	return 0;
}

extern unsigned int game_get_charlevel(t_game const * game)
{
	ASSERT(game,0);
	return game->charlevel;
}

extern unsigned int game_get_leveldiff(t_game const * game)
{
	ASSERT(game,0);
	return game->leveldiff;
}

extern unsigned int game_get_maxlevel(t_game const * game)
{
	int	maxlevel;

	ASSERT(game,0);
	maxlevel=game->charlevel+game->leveldiff;
	if (maxlevel>0xff) maxlevel=0xff;
	return maxlevel;
}

extern unsigned int game_get_minlevel(t_game const * game)
{
	int	minlevel;

	ASSERT(game,0);
	minlevel=game->charlevel-game->leveldiff;
	if (minlevel<0) minlevel=0;
	return minlevel;
}

extern unsigned int game_get_gameflag_expansion(t_game const * game)
{
	ASSERT(game,0);
	return gameflag_get_expansion(game->gameflag);
}

extern unsigned int game_get_gameflag_hardcore(t_game const * game)
{
	ASSERT(game,0);
	return gameflag_get_hardcore(game->gameflag);
}

extern unsigned int game_get_gameflag_difficulty(t_game const * game)
{
	ASSERT(game,0);
	return gameflag_get_difficulty(game->gameflag);
}

extern int game_set_gameflag_expansion(t_game * game, unsigned int expansion)
{
	ASSERT(game,-1);
	gameflag_set_expansion(game->gameflag,expansion);
	return 0;
}

extern int game_set_gameflag_hardcore(t_game * game, unsigned int hardcore)
{
	ASSERT(game,-1);
	gameflag_set_hardcore(game->gameflag,hardcore);
	return 0;
}

extern int game_set_gameflag_difficulty(t_game * game, unsigned int difficulty)
{
	ASSERT(game,-1);
	gameflag_set_difficulty(game->gameflag,difficulty);
	return 0;
}

extern unsigned int game_get_created(t_game const * game)
{
	ASSERT(game,0);
	return game->created;
}

extern int game_set_created(t_game * game, unsigned int created)
{
	ASSERT(game,-1);
	game->created=created;
	return 0;
}

extern unsigned int game_get_maxchar(t_game const * game)
{
	ASSERT(game,0);
	return game->maxchar;
}

extern int game_set_maxchar(t_game * game, unsigned int maxchar)
{
	ASSERT(game,-1);
	game->maxchar=maxchar;
	return 0;
}

extern unsigned int game_get_currchar(t_game const * game)
{
	ASSERT(game,0);
	return game->currchar;
}

extern char const * game_get_name(t_game const * game)
{
	ASSERT(game,NULL);
	return game->name;
}

extern char const * game_get_desc(t_game const * game)
{
	ASSERT(game,NULL);
	return game->desc;
}

extern char const * game_get_pass(t_game const * game)
{
	ASSERT(game,NULL);
	return game->pass;
}

extern unsigned int game_get_gameflag(t_game const * game)
{
	ASSERT(game,0);
	return game->gameflag;
}

extern int game_get_create_time(t_game const * game)
{
	ASSERT(game,-1);
	return game->create_time;
}

extern int game_set_create_time(t_game * game, int create_time)
{
	ASSERT(game,-1);
	game->create_time=create_time;
	return 0;
}

extern t_list * game_get_charlist(t_game const * game)
{
	ASSERT(game,NULL);
	return game->charlist;
}

extern unsigned int gamelist_get_totalgame(void)
{
	return total_game;
}