/*
	cl_ignore.c

	Client-side ignore list management

	Copyright (C) 1996-1997  Id Software, Inc.

	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:

		Free Software Foundation, Inc.
		59 Temple Place - Suite 330
		Boston, MA  02111-1307, USA

*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

static __attribute__ ((unused)) const char rcsid[] =
	"$Id$";

#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif

#include "QF/info.h"
#include "QF/dstring.h"
#include "QF/llist.h"
#include "QF/cmd.h"
#include "QF/sys.h"
#include "client.h"
#include "cl_chat.h"

llist_t *ignore_list, *dead_ignore_list;

static void
CL_Ignore_Free (void *ele, void *unused)
{
	ignore_t *ig = (ignore_t *) ele;
	if (ig->lastname)
		free ((void *)ig->lastname);
	free (ig);
}

static qboolean
CL_Ignore_Compare (const void *ele, const void *cmp, void *unused)
{
	return *(int *)cmp == ((ignore_t *) ele)->uid;
}

static void
CL_Ignore_Sanity_Check (void)
{
	auto qboolean iterator (ignore_t *ig, llist_node_t *node);
	qboolean
	iterator (ignore_t *ig, llist_node_t *node)
	{
		if (cl.players[ig->slot].userid != ig->uid) // We got out of sync somehow
			llist_remove (node);
		return true;
	}
	llist_iterate (ignore_list, LLIST_ICAST (iterator));
}

static void
CL_Ignore_f (void)
{
	CL_Ignore_Sanity_Check ();
	if (Cmd_Argc () == 1) {
		auto qboolean live_iterator (ignore_t *ig, llist_node_t *node);
		qboolean live_iterator (ignore_t *ig, llist_node_t *node)
		{
			Sys_Printf ("%5i - %s\n", ig->uid, Info_ValueForKey (cl.players[ig->slot].userinfo, "name"));
			return true;
		}
		auto qboolean dead_iterator (ignore_t *ig, llist_node_t *node);
		qboolean dead_iterator (ignore_t *ig, llist_node_t *node)
		{
			Sys_Printf ("%s\n", ig->lastname);
			return true;
		}
		Sys_Printf (
			"Users ignored by user id\n"
			"------------------------\n"
		);
		llist_iterate (ignore_list, LLIST_ICAST (live_iterator));
		Sys_Printf (
			"\n"
			"Users ignored by name (not currently connected)\n"
			"-----------------------------------------------\n"
		);
		llist_iterate (dead_ignore_list, LLIST_ICAST (dead_iterator));
	} else if (Cmd_Argc () == 2) {
		int i, uid = atoi (Cmd_Argv (1));

		for (i = 0; i < MAX_CLIENTS; i++) {
			if (cl.players[i].userid == uid) {
				ignore_t *new = calloc (1, sizeof (ignore_t));
				new->slot = i;
				new->uid = uid;
				llist_append (ignore_list, new);
				Sys_Printf ("User %i (%s) is now ignored.\n", uid, Info_ValueForKey (cl.players[i].userinfo, "name"));
				return;
			}
		}
		Sys_Printf ("No user %i present on the server.\n", uid);
	} else
		Sys_Printf ("Usage: ignore [userid]\n");
}

static void
CL_Unignore_f (void)
{
	int uid;
	llist_node_t *node;

	CL_Ignore_Sanity_Check ();
	if (Cmd_Argc() != 2)
		Sys_Printf ("usage: unignore userid\n");
	else {
		uid = atoi (Cmd_Argv (1));
		if ((node = llist_findnode (ignore_list, &uid))) {
			Sys_Printf ("User %i (%s) is no longer ignored.\n", uid, Info_ValueForKey (cl.players[LLIST_DATA (node, ignore_t)->slot].userinfo, "name"));
			CL_Ignore_Free (llist_remove (node), 0);
			return;
		}
		Sys_Printf ("User %i does not exist or is not presently ignored.\n", uid);
	}
}

qboolean
CL_Chat_Allow_Message (const char *str)
{
	dstring_t *test = dstring_newstr ();
	qboolean allowed = true;

	auto qboolean iterator (ignore_t *ig, llist_node_t *node);
	qboolean iterator (ignore_t *ig, llist_node_t *node)
	{
		if (cl.players[ig->slot].userid != ig->uid) { // We got out of sync somehow
			llist_remove (node);
			return true;
		}
		dsprintf (test, "%s: ", Info_ValueForKey (cl.players[ig->slot].userinfo, "name"));
		if (!strncmp (test->str, str, sizeof (test->str))) {
			return allowed = false;
		} else
			return true;
	}

	llist_iterate (ignore_list, LLIST_ICAST (iterator));
	return allowed;
}

void
CL_Chat_User_Disconnected (int uid)
{
	ignore_t *ig;

	CL_Ignore_Sanity_Check ();

	if ((ig = llist_remove (llist_findnode (ignore_list, &uid)))) {
		if (ig->lastname)
			free ((void *)ig->lastname);
		ig->lastname = strdup (Info_ValueForKey (cl.players[ig->slot].userinfo, "name"));
		llist_append (dead_ignore_list, ig);
		Sys_Printf ("Ignored user %i (%s) left the server.  Now ignoring by name...\n", ig->uid, ig->lastname);
	}
}

void
CL_Chat_Check_Name (const char *name, int slot)
{
	ignore_t *found = 0;

	auto qboolean iterator (ignore_t *ig, llist_node_t *node);
	qboolean iterator (ignore_t *ig, llist_node_t *node)
	{
		if (!strcmp (ig->lastname, name)) {
			found = ig;
			return false;
		} else
			return true;
	}
	llist_iterate (dead_ignore_list, LLIST_ICAST (iterator));
	if (found) {
		found->slot = slot;
		found->uid = cl.players[slot].userid;
		llist_append (ignore_list, llist_remove (llist_getnode (dead_ignore_list, found)));
		Sys_Printf ("User %i (%s) is using an ignored name.  Now ignoring by user id...\n", found->uid, found->lastname);
	}
}

void
CL_Chat_Flush_Ignores (void)
{
	llist_flush (ignore_list);
}

void
CL_Chat_Init (void)
{
	ignore_list = llist_new (CL_Ignore_Free, CL_Ignore_Compare, 0);
	dead_ignore_list = llist_new (CL_Ignore_Free, CL_Ignore_Compare, 0);

	Cmd_AddCommand ("ignore", CL_Ignore_f, "Ignores chat and name-change messages from a user.");
	Cmd_AddCommand ("unignore", CL_Unignore_f, "Removes a previously ignored user from the ignore list.");
}