/*
 fe-ctcp.c : irssi

    Copyright (C) 1999-2000 Timo Sirainen

    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.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#include "module.h"
#include "module-formats.h"
#include "misc.h"
#include "settings.h"

#include "levels.h"
#include "servers.h"
#include "channels.h"
#include "queries.h"
#include "ignore.h"

#include "fe-windows.h"
#include "window-items.h"
#include "printtext.h"

static void ctcp_default_msg(IRC_SERVER_REC *server, const char *data,
			     const char *nick, const char *addr,
			     const char *target)
{
        const char *p;
	char *cmd;

	p = strchr(data, ' ');
	if (p == NULL) {
		cmd = g_strdup(data);
                data = "";
	} else {
		cmd = g_strndup(data, (int) (p-data));
                data = p+1;
	}

	printformat(server, server_ischannel(SERVER(server), target) ? target : nick, MSGLEVEL_CTCPS,
		    IRCTXT_CTCP_REQUESTED_UNKNOWN,
		    nick, addr, cmd, data, target);
        g_free(cmd);
}

static void ctcp_ping_msg(IRC_SERVER_REC *server, const char *data,
			  const char *nick, const char *addr,
			  const char *target)
{
	signal_emit("message irc ctcp", 6, server, "PING",
		    data, nick, addr, target);
}

static void ctcp_version_msg(IRC_SERVER_REC *server, const char *data,
			     const char *nick, const char *addr,
			     const char *target)
{
	signal_emit("message irc ctcp", 6, server, "VERSION",
		    data, nick, addr, target);
}

static void ctcp_time_msg(IRC_SERVER_REC *server, const char *data,
			  const char *nick, const char *addr,
			  const char *target)
{
	signal_emit("message irc ctcp", 6, server, "TIME",
		    data, nick, addr, target);
}

static void ctcp_userinfo_msg(IRC_SERVER_REC *server, const char *data,
			  const char *nick, const char *addr,
			  const char *target)
{
	signal_emit("message irc ctcp", 6, server, "USERINFO",
		    data, nick, addr, target);
}

static void ctcp_clientinfo_msg(IRC_SERVER_REC *server, const char *data,
			  const char *nick, const char *addr,
			  const char *target)
{
	signal_emit("message irc ctcp", 6, server, "CLIENTINFO",
		    data, nick, addr, target);
}

static void ctcp_default_reply(IRC_SERVER_REC *server, const char *data,
			       const char *nick, const char *addr,
			       const char *target)
{
	const char *ctcpdata;
	char *ctcp, *ptr;

	g_return_if_fail(data != NULL);

	ctcp = g_strdup(data);
	ptr = strchr(ctcp, ' ');
	if (ptr == NULL)
		ctcpdata = "";
	else {
		*ptr = '\0';
		ctcpdata = ptr+1;
	}

	printformat(server, server_ischannel(SERVER(server), target) ? target : nick, MSGLEVEL_CTCPS,
		    server_ischannel(SERVER(server), target) ? IRCTXT_CTCP_REPLY_CHANNEL :
		    IRCTXT_CTCP_REPLY, ctcp, nick, ctcpdata, target);
	g_free(ctcp);
}

static void ctcp_ping_reply(IRC_SERVER_REC *server, const char *data,
			    const char *nick, const char *addr,
			    const char *target)
{
	GTimeVal tv, tv2;
	long usecs;

	g_return_if_fail(data != NULL);

	if (sscanf(data, "%ld %ld", &tv2.tv_sec, &tv2.tv_usec) < 1) {
                char *tmp = g_strconcat("PING ", data, NULL);
		ctcp_default_reply(server, tmp, nick, addr, target);
		g_free(tmp);
		return;
	}

        g_get_current_time(&tv);
	usecs = get_timeval_diff(&tv, &tv2);
        printformat(server, server_ischannel(SERVER(server), target) ? target : nick, MSGLEVEL_CTCPS,
                    IRCTXT_CTCP_PING_REPLY, nick, usecs/1000, usecs%1000);
}

void fe_ctcp_init(void)
{
	signal_add("default ctcp msg", (SIGNAL_FUNC) ctcp_default_msg);
	signal_add("ctcp msg ping", (SIGNAL_FUNC) ctcp_ping_msg);
	signal_add("ctcp msg version", (SIGNAL_FUNC) ctcp_version_msg);
	signal_add("ctcp msg time", (SIGNAL_FUNC) ctcp_time_msg);
	signal_add("ctcp msg userinfo", (SIGNAL_FUNC) ctcp_userinfo_msg);
	signal_add("ctcp msg clientinfo", (SIGNAL_FUNC) ctcp_clientinfo_msg);
	signal_add("default ctcp reply", (SIGNAL_FUNC) ctcp_default_reply);
	signal_add("ctcp reply ping", (SIGNAL_FUNC) ctcp_ping_reply);
}

void fe_ctcp_deinit(void)
{
	signal_remove("default ctcp msg", (SIGNAL_FUNC) ctcp_default_msg);
	signal_remove("ctcp msg ping", (SIGNAL_FUNC) ctcp_ping_msg);
	signal_remove("ctcp msg version", (SIGNAL_FUNC) ctcp_version_msg);
	signal_remove("ctcp msg time", (SIGNAL_FUNC) ctcp_time_msg);
	signal_remove("ctcp msg userinfo", (SIGNAL_FUNC) ctcp_userinfo_msg);
	signal_remove("ctcp msg clientinfo", (SIGNAL_FUNC) ctcp_clientinfo_msg);
	signal_remove("default ctcp reply", (SIGNAL_FUNC) ctcp_default_reply);
	signal_remove("ctcp reply ping", (SIGNAL_FUNC) ctcp_ping_reply);
}