/**
 * MaNGOS is a full featured server for World of Warcraft, supporting
 * the following clients: 1.12.x, 2.4.3, 3.3.5a, 4.3.4a and 5.4.8
 *
 * Copyright (C) 2005-2017  MaNGOS project <https://getmangos.eu>
 *
 * 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
 *
 * World of Warcraft, and all World of Warcraft or Warcraft art, images,
 * and lore are copyrighted by Blizzard Entertainment, Inc.
 */

#include "ChannelMgr.h"
#include "Policies/Singleton.h"
#include "World.h"

INSTANTIATE_SINGLETON_1(AllianceChannelMgr);
INSTANTIATE_SINGLETON_1(HordeChannelMgr);

ChannelMgr* channelMgr(Team team)
{
    if (sWorld.getConfig(CONFIG_BOOL_ALLOW_TWO_SIDE_INTERACTION_CHANNEL))
        { return &MaNGOS::Singleton<AllianceChannelMgr>::Instance(); }        // cross-faction

    if (team == ALLIANCE)
        { return &MaNGOS::Singleton<AllianceChannelMgr>::Instance(); }
    if (team == HORDE)
        { return &MaNGOS::Singleton<HordeChannelMgr>::Instance(); }

    return NULL;
}

ChannelMgr::~ChannelMgr()
{
    for (ChannelMap::iterator itr = channels.begin(); itr != channels.end(); ++itr)
        { delete itr->second; }

    channels.clear();
}

Channel* ChannelMgr::GetJoinChannel(const std::string &name)
{
    std::wstring wname;
    Utf8toWStr(name, wname);
    wstrToLower(wname);

    if (channels.find(wname) == channels.end())
    {
        Channel* nchan = new Channel(name);
        channels[wname] = nchan;
        return nchan;
    }

    return channels[wname];
}

Channel* ChannelMgr::GetChannel(const std::string &name, Player* p, bool pkt)
{
    std::wstring wname;
    Utf8toWStr(name, wname);
    wstrToLower(wname);

    ChannelMap::const_iterator i = channels.find(wname);

    if (i == channels.end())
    {
        if (pkt)
        {
            WorldPacket data;
            Channel::MakeNotOnPacket(&data, name);
            p->GetSession()->SendPacket(&data);
        }

        return NULL;
    }
    else
        { return i->second; }
}

void ChannelMgr::LeftChannel(const std::string &name)
{
    std::wstring wname;
    Utf8toWStr(name, wname);
    wstrToLower(wname);

    ChannelMap::const_iterator i = channels.find(wname);

    if (i == channels.end())
        { return; }

    Channel* channel = i->second;

    if (channel->GetNumPlayers() == 0 && !channel->IsConstant())
    {
        channels.erase(wname);
        delete channel;
    }
}