/*
 * InspIRCd -- Internet Relay Chat Daemon
 *
 *   Copyright (C) 2017 B00mX0r <b00mx0r@aureus.pw>
 *   Copyright (C) 2013, 2018, 2020 Sadie Powell <sadie@witchery.services>
 *   Copyright (C) 2012, 2019 Robby <robby@chatbelgie.be>
 *   Copyright (C) 2012, 2016 Attila Molnar <attilamolnar@hush.com>
 *   Copyright (C) 2009 Uli Schlachter <psychon@inspircd.org>
 *   Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
 *   Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
 *   Copyright (C) 2008 Oliver Lupton <om@inspircd.org>
 *
 * 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"
#include "numerichelper.h"

class CommandSATopic final
	: public Command
{
public:
	CommandSATopic(Module* Creator)
		: Command(Creator, "SATOPIC", 2, 2)
	{
		access_needed = CmdAccess::OPERATOR;
		allow_empty_last_param = true;
		syntax = { "<channel> :<topic>" };
	}

	CmdResult Handle(User* user, const Params& parameters) override
	{
		/*
		 * Handles a SATOPIC request. Notifies all +s users.
		 */
		auto* target = ServerInstance->Channels.Find(parameters[0]);

		if(target)
		{
			const std::string newTopic(parameters[1], 0, ServerInstance->Config->Limits.MaxTopic);
			if (target->topic == newTopic)
			{
				user->WriteNotice(INSP_FORMAT("The topic on {} is already what you are trying to change it to.", target->name));
				return CmdResult::SUCCESS;
			}

			target->SetTopic(user, newTopic, ServerInstance->Time(), nullptr);
			ServerInstance->SNO.WriteGlobalSno('a', user->nick + " used SATOPIC on " + target->name + ", new topic: " + newTopic);

			return CmdResult::SUCCESS;
		}
		else
		{
			user->WriteNumeric(Numerics::NoSuchChannel(parameters[0]));
			return CmdResult::FAILURE;
		}
	}
};

class ModuleSATopic final
	: public Module
{
private:
	CommandSATopic cmd;

public:
	ModuleSATopic()
		: Module(VF_VENDOR, "Adds the /SATOPIC command which allows server operators to change the topic of a channel that they would not otherwise have the privileges to change.")
		, cmd(this)
	{
	}
};

MODULE_INIT(ModuleSATopic)