void WorldSession::HandleBlackMarketBidOnItem(WorldPackets::BlackMarket::BlackMarketBidOnItem& blackMarketBidOnItem)
{
    if (!sBlackMarketMgr->IsEnabled())
        return;

    Player* player = GetPlayer();
    Creature* unit = player->GetNPCIfCanInteractWith(blackMarketBidOnItem.Guid, UNIT_NPC_FLAG_BLACK_MARKET);
    if (!unit)
    {
        TC_LOG_DEBUG("network", "WORLD: HandleBlackMarketBidOnItem - Unit (GUID: %s) not found or you can't interact with him.", blackMarketBidOnItem.Guid.ToString().c_str());
        return;
    }

    BlackMarketEntry* entry = sBlackMarketMgr->GetAuctionByID(blackMarketBidOnItem.MarketID);
    if (!entry)
    {
        TC_LOG_DEBUG("network", "WORLD: HandleBlackMarketBidOnItem - Player (%s, name: %s) tried to bid on a nonexistent auction (MarketId: %i).", player->GetGUID().ToString().c_str(), player->GetName().c_str(), blackMarketBidOnItem.MarketID);
        SendBlackMarketBidOnItemResult(ERR_BMAH_ITEM_NOT_FOUND, blackMarketBidOnItem.MarketID, blackMarketBidOnItem.Item);
        return;
    }

    if (entry->GetBidder() == player->GetGUID().GetCounter())
    {
        TC_LOG_DEBUG("network", "WORLD: HandleBlackMarketBidOnItem - Player (%s, name: %s) tried to place a bid on an item he already bid on. (MarketId: %i).", player->GetGUID().ToString().c_str(), player->GetName().c_str(), blackMarketBidOnItem.MarketID);
        SendBlackMarketBidOnItemResult(ERR_BMAH_ALREADY_BID, blackMarketBidOnItem.MarketID, blackMarketBidOnItem.Item);
        return;
    }

    if (!entry->ValidateBid(blackMarketBidOnItem.BidAmount))
    {
        TC_LOG_DEBUG("network", "WORLD: HandleBlackMarketBidOnItem - Player (%s, name: %s) tried to place an invalid bid. Amount: %lu (MarketId: %i).", player->GetGUID().ToString().c_str(), player->GetName().c_str(), blackMarketBidOnItem.BidAmount, blackMarketBidOnItem.MarketID);
        SendBlackMarketBidOnItemResult(ERR_BMAH_HIGHER_BID, blackMarketBidOnItem.MarketID, blackMarketBidOnItem.Item);
        return;
    }

    if (!player->HasEnoughMoney(blackMarketBidOnItem.BidAmount))
    {
        TC_LOG_DEBUG("network", "WORLD: HandleBlackMarketBidOnItem - Player (%s, name: %s) does not have enough money to place bid. (MarketId: %i).", player->GetGUID().ToString().c_str(), player->GetName().c_str(), blackMarketBidOnItem.MarketID);
        SendBlackMarketBidOnItemResult(ERR_BMAH_NOT_ENOUGH_MONEY, blackMarketBidOnItem.MarketID, blackMarketBidOnItem.Item);
        return;
    }

    if (entry->GetSecondsRemaining() <= 0)
    {
        TC_LOG_DEBUG("network", "WORLD: HandleBlackMarketBidOnItem - Player (%s, name: %s) tried to bid on a completed auction. (MarketId: %i).", player->GetGUID().ToString().c_str(), player->GetName().c_str(), blackMarketBidOnItem.MarketID);
        SendBlackMarketBidOnItemResult(ERR_BMAH_DATABASE_ERROR, blackMarketBidOnItem.MarketID, blackMarketBidOnItem.Item);
        return;
    }

    SQLTransaction trans = CharacterDatabase.BeginTransaction();

    sBlackMarketMgr->SendAuctionOutbidMail(entry, trans);
    entry->PlaceBid(blackMarketBidOnItem.BidAmount, player, trans);

    CharacterDatabase.CommitTransaction(trans);

    SendBlackMarketBidOnItemResult(ERR_BMAH_OK, blackMarketBidOnItem.MarketID, blackMarketBidOnItem.Item);
}
void BlackMarketMgr::Update(bool updateTime)
{
    SQLTransaction trans = CharacterDatabase.BeginTransaction();
    time_t now = time(nullptr);
    for (BlackMarketEntryMap::iterator itr = _auctions.begin(); itr != _auctions.end(); ++itr)
    {
        BlackMarketEntry* entry = itr->second;

        if (entry->IsCompleted() && entry->GetBidder())
            SendAuctionWonMail(entry, trans);

        if (updateTime)
            entry->Update(now);
    }

    if (updateTime)
        _lastUpdate = now;

    CharacterDatabase.CommitTransaction(trans);
}