/*
 * InspIRCd -- Internet Relay Chat Daemon
 *
 *   Copyright (C) 2018 linuxdaemon <linuxdaemon.irc@gmail.com>
 *   Copyright (C) 2013, 2018, 2022 Sadie Powell <sadie@witchery.services>
 *   Copyright (C) 2012-2014, 2018 Attila Molnar <attilamolnar@hush.com>
 *   Copyright (C) 2012, 2019 Robby <robby@chatbelgie.be>
 *   Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
 *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
 *   Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
 *
 * This file is part of InspIRCd.  InspIRCd 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, version 2.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */


#include "inspircd.h"

class ModuleChanLog : public Module
{
	/*
	 * Multimap so people can redirect a snomask to multiple channels.
	 */
	typedef insp::flat_multimap<char, std::string> ChanLogTargets;
	ChanLogTargets logstreams;

 public:
	void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
	{
		ChanLogTargets newlogs;

		ConfigTagList tags = ServerInstance->Config->ConfTags("chanlog");
		for (ConfigIter i = tags.first; i != tags.second; ++i)
		{
			ConfigTag* tag = i->second;

			const std::string channel = tag->getString("channel");
			if (!ServerInstance->IsChannel(channel))
				throw ModuleException("<chanlog:channel> must be set to a channel name, at " + tag->getTagLocation());

			const std::string snomasks = tag->getString("snomasks");
			if (snomasks.empty())
				throw ModuleException("<chanlog:snomasks> must not be empty, at " + tag->getTagLocation());

			for (std::string::const_iterator it = snomasks.begin(); it != snomasks.end(); it++)
			{
				newlogs.insert(std::make_pair(*it, channel));
				ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Logging %c to %s", *it, channel.c_str());
			}
		}

		logstreams.swap(newlogs);
	}

	ModResult OnSendSnotice(char &sno, std::string &desc, const std::string &msg) CXX11_OVERRIDE
	{
		std::pair<ChanLogTargets::const_iterator, ChanLogTargets::const_iterator> itpair = logstreams.equal_range(sno);
		if (itpair.first == itpair.second)
			return MOD_RES_PASSTHRU;

		const std::string snotice = "\002" + desc + "\002: " + msg;

		for (ChanLogTargets::const_iterator it = itpair.first; it != itpair.second; ++it)
		{
			Channel *c = ServerInstance->FindChan(it->second);
			if (c)
			{
				ClientProtocol::Messages::Privmsg privmsg(ClientProtocol::Messages::Privmsg::nocopy, ServerInstance->Config->ServerName, c, snotice);
				c->Write(ServerInstance->GetRFCEvents().privmsg, privmsg);
				ServerInstance->PI->SendMessage(c, 0, snotice);
			}
		}

		return MOD_RES_PASSTHRU;
	}

	Version GetVersion() CXX11_OVERRIDE
	{
		return Version("Allows messages sent to snomasks to be logged to a channel.", VF_VENDOR);
	}
};

MODULE_INIT(ModuleChanLog)
