////////////////////////////////////////////////////////////////
///This function handles CMSG_GROUP_ACCEPT:
////////////////////////////////////////////////////////////////
void WorldSession::HandleGroupAcceptOpcode( WorldPacket & recv_data )
{
	if(!_player->IsInWorld()) return;

	PlayerPointer player = objmgr.GetPlayer(_player->GetInviter());
	if ( !player )
		return;
	
	player->SetInviter(0);
	_player->SetInviter(0);
	
	Group *grp = player->GetGroup();

	if(grp)
	{
		grp->AddMember(_player->m_playerInfo);
		if(grp->GetLeader()->m_loggedInPlayer)
			_player->iInstanceType = grp->GetLeader()->m_loggedInPlayer->iInstanceType;

        _player->GetSession()->OutPacket(MSG_SET_DUNGEON_DIFFICULTY, 4, &_player->iInstanceType);
		return;
	}
	
	// If we're this far, it means we have no existing group, and have to make one.
	grp = new Group(true);
	grp->AddMember(player->m_playerInfo);		// add the inviter first, therefore he is the leader
	grp->AddMember(_player->m_playerInfo);	   // add us.
    _player->iInstanceType = player->iInstanceType;
    _player->GetSession()->OutPacket(MSG_SET_DUNGEON_DIFFICULTY, 4, &player->iInstanceType);
}
///////////////////////////////////////////////////////////////////////////////////////
///This function handles CMSG_GROUP_DECLINE:
//////////////////////////////////////////////////////////////////////////////////////
void WorldSession::HandleGroupDeclineOpcode( WorldPacket & recv_data )
{
	if(!_player->IsInWorld()) return;
	WorldPacket data(SMSG_GROUP_DECLINE, 100);

	PlayerPointer player = objmgr.GetPlayer(_player->GetInviter());
	if(!player) return;

	data << GetPlayer()->GetName();

	player->GetSession()->SendPacket( &data );
	player->SetInviter(0);
	_player->SetInviter(0);
}
//////////////////////////////////////////////////////////////
/// This function handles CMSG_GROUP_INVITE
//////////////////////////////////////////////////////////////
void WorldSession::HandleGroupInviteOpcode( WorldPacket & recv_data )
{
	if(!_player->IsInWorld())
		return;

	CHECK_PACKET_SIZE(recv_data, 1);
	WorldPacket data(100);
	std::string membername;
	PlayerPointer player = NULLPLR;
	Group *group = NULL;

	recv_data >> membername;
	if(_player->HasBeenInvited())return;

	player = objmgr.GetPlayer(membername.c_str(), false);

	if ( player == NULL)
	{
		SendPartyCommandResult(_player, 0, membername, ERR_PARTY_CANNOT_FIND);
		return;
	}

	if (player == _player)
	{
		return;
	}

	if ( _player->InGroup() && (!_player->IsGroupLeader() || _player->GetGroup()->HasFlag(GROUP_FLAG_BATTLEGROUND_GROUP) ) )
	{
		SendPartyCommandResult(_player, 0, "", ERR_PARTY_YOU_ARE_NOT_LEADER);
		return;
	}

	group = _player->GetGroup();
	if ( group != NULL )
	{
		if (group->IsFull())
		{
			SendPartyCommandResult(_player, 0, "", ERR_PARTY_IS_FULL);
			return;
		}
	}

	if ( player->InGroup() )
	{
		SendPartyCommandResult(_player, player->GetGroup()->GetGroupType(), membername, ERR_PARTY_ALREADY_IN_GROUP);
		data.SetOpcode(SMSG_GROUP_INVITE);
		data << uint8(0);
		data << GetPlayer()->GetName();
		player->GetSession()->SendPacket(&data);
		return;
	}
	
	if(player->GetTeam()!=_player->GetTeam() && _player->GetSession()->GetPermissionCount() == 0 && !sWorld.cross_faction_world)
	{
		SendPartyCommandResult(_player, 0, membername, ERR_PARTY_WRONG_FACTION);
		return;
	}

	if ( player->HasBeenInvited() )
	{
		SendPartyCommandResult(_player, 0, membername, ERR_PARTY_ALREADY_IN_GROUP);
		return;
	}

	if( player->Social_IsIgnoring( _player->GetLowGUID() ) )
	{
		SendPartyCommandResult(_player, 0, membername, ERR_PARTY_IS_IGNORING_YOU);
		return;
	}

	if( player->bGMTagOn && !_player->GetSession()->HasPermissions())
	{
		SendPartyCommandResult(_player, 0, membername, ERR_PARTY_CANNOT_FIND);
		return;
	}

	// 16/08/06 - change to guid to prevent very unlikely event of a crash in deny, etc
	_player->SetInviter(_player->GetLowGUID());//bugfix if player invtied 2 people-> he can be in 2 parties

	data.SetOpcode(SMSG_GROUP_INVITE);
	data << uint8(1);
	data << GetPlayer()->GetName();

	player->GetSession()->SendPacket(&data);

	uint32 gtype = 0;
	if(group)
		gtype = group->GetGroupType();

	SendPartyCommandResult(_player, gtype, membername, ERR_PARTY_NO_ERROR);

	// 16/08/06 - change to guid to prevent very unlikely event of a crash in deny, etc
	player->SetInviter(_player->GetLowGUID());
}