/*
 * This file is part of the AzerothCore Project. See AUTHORS file for Copyright information
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

#include "AuctionHouseMgr.h"
#include "AuctionHouseSearcher.h"
#include "Common.h"
#include "DBCStores.h"
#include "DatabaseEnv.h"
#include "GameTime.h"
#include "Item.h"
#include "Logging/Log.h"
#include "ObjectMgr.h"
#include "Player.h"
#include "ScriptMgr.h"
#include "UpdateTime.h"
#include "World.h"
#include "WorldPacket.h"
#include <vector>

constexpr auto AH_MINIMUM_DEPOSIT = 100;

AuctionHouseMgr::AuctionHouseMgr() : _auctionHouseSearcher(new AuctionHouseSearcher())
{
    _updateIntervalTimer.SetInterval(MINUTE * IN_MILLISECONDS);
    _updateIntervalTimer.SetCurrent(MINUTE * IN_MILLISECONDS);
}

AuctionHouseMgr::~AuctionHouseMgr()
{
    for (ItemMap::iterator itr = _mAitems.begin(); itr != _mAitems.end(); ++itr)
        delete itr->second;

    delete _auctionHouseSearcher;
}

AuctionHouseMgr* AuctionHouseMgr::instance()
{
    static AuctionHouseMgr instance;
    return &instance;
}

AuctionHouseObject* AuctionHouseMgr::GetAuctionsMap(uint32 factionTemplateId)
{
    if (sWorld->getBoolConfig(CONFIG_ALLOW_TWO_SIDE_INTERACTION_AUCTION))
        return &_neutralAuctions;

    // team have linked auction houses
    FactionTemplateEntry const* u_entry = sFactionTemplateStore.LookupEntry(factionTemplateId);
    if (!u_entry)
        return &_neutralAuctions;
    else if (u_entry->ourMask & FACTION_MASK_ALLIANCE)
        return &_allianceAuctions;
    else if (u_entry->ourMask & FACTION_MASK_HORDE)
        return &_hordeAuctions;

    return &_neutralAuctions;
}

AuctionHouseObject* AuctionHouseMgr::GetAuctionsMapByHouseId(AuctionHouseId auctionHouseId)
{
    if (sWorld->getBoolConfig(CONFIG_ALLOW_TWO_SIDE_INTERACTION_AUCTION))
        return &_neutralAuctions;

    switch (auctionHouseId)
    {
        case AuctionHouseId::Alliance:
            return &_allianceAuctions;
        case AuctionHouseId::Horde:
            return &_hordeAuctions;
        case AuctionHouseId::Neutral:
        default:
            break;
    }

    return &_neutralAuctions;
}

uint32 AuctionHouseMgr::GetAuctionDeposit(AuctionHouseEntry const* entry, uint32 time, Item* pItem, uint32 count)
{
    uint32 MSV = pItem->GetTemplate()->SellPrice;

    if (MSV <= 0)
        return AH_MINIMUM_DEPOSIT * sWorld->getRate(RATE_AUCTION_DEPOSIT);

    float multiplier = CalculatePct(float(entry->depositPercent), 3);
    uint32 timeHr = (((time / 60) / 60) / 12);
    uint32 deposit = uint32(((multiplier * MSV * count / 3) * timeHr * 3) * sWorld->getRate(RATE_AUCTION_DEPOSIT));

    LOG_DEBUG("auctionHouse", "MSV:        {}", MSV);
    LOG_DEBUG("auctionHouse", "Items:      {}", count);
    LOG_DEBUG("auctionHouse", "Multiplier: {}", multiplier);
    LOG_DEBUG("auctionHouse", "Deposit:    {}", deposit);

    if (deposit < AH_MINIMUM_DEPOSIT * sWorld->getRate(RATE_AUCTION_DEPOSIT))
        return AH_MINIMUM_DEPOSIT * sWorld->getRate(RATE_AUCTION_DEPOSIT);
    else
        return deposit;
}

//does not clear ram
void AuctionHouseMgr::SendAuctionWonMail(AuctionEntry* auction, CharacterDatabaseTransaction trans, bool sendNotification, bool updateAchievementCriteria, bool sendMail)
{
    Item* pItem = GetAItem(auction->item_guid);
    if (!pItem)
        return;

    uint32 bidder_accId = 0;
    Player* bidder = ObjectAccessor::FindConnectedPlayer(auction->bidder);
    if (bidder)
        bidder_accId = bidder->GetSession()->GetAccountId();
    else
        bidder_accId = sCharacterCache->GetCharacterAccountIdByGuid(auction->bidder);

    // receiver exist
    if (bidder || bidder_accId)
    {
        sScriptMgr->OnBeforeAuctionHouseMgrSendAuctionWonMail(this, auction, bidder, bidder_accId, sendNotification, updateAchievementCriteria, sendMail);
        // set owner to bidder (to prevent delete item with sender char deleting)
        // owner in `data` will set at mail receive and item extracting
        CharacterDatabasePreparedStatement* stmt = CharacterDatabase.GetPreparedStatement(CHAR_UPD_ITEM_OWNER);
        stmt->SetData(0, auction->bidder.GetCounter());
        stmt->SetData(1, pItem->GetGUID().GetCounter());
        trans->Append(stmt);

        if (bidder)
        {
            if (sendNotification) // can be changed in the hook
                bidder->GetSession()->SendAuctionBidderNotification((uint32)auction->GetHouseId(), auction->Id, auction->bidder, 0, 0, auction->item_template);

            if (updateAchievementCriteria) // can be changed in the hook
                bidder->UpdateAchievementCriteria(ACHIEVEMENT_CRITERIA_TYPE_WON_AUCTIONS, 1);
        }
        else if (updateAchievementCriteria)
            sAchievementMgr->UpdateAchievementCriteriaForOfflinePlayer(auction->bidder.GetCounter(), ACHIEVEMENT_CRITERIA_TYPE_WON_AUCTIONS, 1);

        if (sendMail) // can be changed in the hook
        {
            MailDraft(auction->BuildAuctionMailSubject(AUCTION_WON), AuctionEntry::BuildAuctionMailBody(auction->owner, auction->bid, auction->buyout))
                .AddItem(pItem)
                .SendMailTo(trans, MailReceiver(bidder, auction->bidder.GetCounter()), auction, MAIL_CHECK_MASK_COPIED);
        }
    }
    else
        RemoveAItem(auction->item_guid, true, &trans);
}

void AuctionHouseMgr::SendAuctionSalePendingMail(AuctionEntry* auction, CharacterDatabaseTransaction trans, bool sendMail)
{
    Player* owner = ObjectAccessor::FindConnectedPlayer(auction->owner);
    uint32 owner_accId = sCharacterCache->GetCharacterAccountIdByGuid(auction->owner);
    // owner exist (online or offline)
    if (owner || owner_accId)
    {
        sScriptMgr->OnBeforeAuctionHouseMgrSendAuctionSalePendingMail(this, auction, owner, owner_accId, sendMail);

        uint32 deliveryDelay = sWorld->getIntConfig(CONFIG_MAIL_DELIVERY_DELAY);

        ByteBuffer timePacker;
        timePacker.AppendPackedTime(GameTime::GetGameTime().count() + time_t(deliveryDelay));

        if (sendMail) // can be changed in the hook
            MailDraft(auction->BuildAuctionMailSubject(AUCTION_SALE_PENDING),
                AuctionEntry::BuildAuctionMailBody(auction->bidder, auction->bid, auction->buyout, auction->deposit, auction->GetAuctionCut(), deliveryDelay, timePacker.read<uint32>()))
            .SendMailTo(trans, MailReceiver(owner, auction->owner.GetCounter()), auction, MAIL_CHECK_MASK_COPIED);
    }
}

//call this method to send mail to auction owner, when auction is successful, it does not clear ram
void AuctionHouseMgr::SendAuctionSuccessfulMail(AuctionEntry* auction, CharacterDatabaseTransaction trans, bool sendNotification, bool updateAchievementCriteria, bool sendMail)
{
    Player* owner = ObjectAccessor::FindConnectedPlayer(auction->owner);
    uint32 owner_accId = sCharacterCache->GetCharacterAccountIdByGuid(auction->owner);
    // owner exist
    if (owner || owner_accId)
    {
        uint32 profit = auction->bid + auction->deposit - auction->GetAuctionCut();
        sScriptMgr->OnBeforeAuctionHouseMgrSendAuctionSuccessfulMail(this, auction, owner, owner_accId, profit, sendNotification, updateAchievementCriteria, sendMail);

        if (owner)
        {
            if (updateAchievementCriteria) // can be changed in the hook
            {
                owner->UpdateAchievementCriteria(ACHIEVEMENT_CRITERIA_TYPE_GOLD_EARNED_BY_AUCTIONS, profit);
                owner->UpdateAchievementCriteria(ACHIEVEMENT_CRITERIA_TYPE_HIGHEST_AUCTION_SOLD, auction->bid);
            }

            if (sendNotification) // can be changed in the hook
                owner->GetSession()->SendAuctionOwnerNotification(auction);
        }
        else if (updateAchievementCriteria)
        {
            sAchievementMgr->UpdateAchievementCriteriaForOfflinePlayer(auction->owner.GetCounter(), ACHIEVEMENT_CRITERIA_TYPE_GOLD_EARNED_BY_AUCTIONS, profit);
            sAchievementMgr->UpdateAchievementCriteriaForOfflinePlayer(auction->owner.GetCounter(), ACHIEVEMENT_CRITERIA_TYPE_HIGHEST_AUCTION_SOLD, auction->bid);
        }

        if (sendMail) // can be changed in the hook
            MailDraft(auction->BuildAuctionMailSubject(AUCTION_SUCCESSFUL), AuctionEntry::BuildAuctionMailBody(auction->bidder, auction->bid, auction->buyout, auction->deposit, auction->GetAuctionCut()))
            .AddMoney(profit)
            .SendMailTo(trans, MailReceiver(owner, auction->owner.GetCounter()), auction, MAIL_CHECK_MASK_COPIED, sWorld->getIntConfig(CONFIG_MAIL_DELIVERY_DELAY));

        if (auction->bid >= 500 * GOLD)
            if (CharacterCacheEntry const* gpd = sCharacterCache->GetCharacterCacheByGuid(auction->bidder))
            {
                Player* bidder = ObjectAccessor::FindConnectedPlayer(auction->bidder);
                std::string owner_name = "";
                uint8 owner_level = 0;
                if (CharacterCacheEntry const* gpd_owner = sCharacterCache->GetCharacterCacheByGuid(auction->owner))
                {
                    owner_name = gpd_owner->Name;
                    owner_level = gpd_owner->Level;
                }
                CharacterDatabase.Execute("INSERT INTO log_money VALUES({}, {}, \"{}\", \"{}\", {}, \"{}\", {}, \"profit: {}g, bidder: {} {} lvl (guid: {}), seller: {} {} lvl (guid: {}), item {} ({})\", NOW(), {})",
                    gpd->AccountId, auction->bidder.GetCounter(), gpd->Name, bidder ? bidder->GetSession()->GetRemoteAddress() : "", owner_accId, owner_name, auction->bid, (profit / GOLD), gpd->Name, gpd->Level, auction->bidder.GetCounter(), owner_name, owner_level, auction->owner.GetCounter(), auction->item_template, auction->itemCount, 2);
            }
    }
}

//does not clear ram
void AuctionHouseMgr::SendAuctionExpiredMail(AuctionEntry* auction, CharacterDatabaseTransaction trans, bool sendNotification, bool sendMail)
{
    //return an item in auction to its owner by mail
    Item* pItem = GetAItem(auction->item_guid);
    if (!pItem)
        return;

    Player* owner = ObjectAccessor::FindConnectedPlayer(auction->owner);
    uint32 owner_accId = sCharacterCache->GetCharacterAccountIdByGuid(auction->owner);

    // owner exist
    if (owner || owner_accId)
    {
        sScriptMgr->OnBeforeAuctionHouseMgrSendAuctionExpiredMail(this, auction, owner, owner_accId, sendNotification, sendMail);

        if (owner && sendNotification) // can be changed in the hook
            owner->GetSession()->SendAuctionOwnerNotification(auction);

        if (sendMail) // can be changed in the hook
        {
            MailDraft(auction->BuildAuctionMailSubject(AUCTION_EXPIRED), AuctionEntry::BuildAuctionMailBody(ObjectGuid::Empty, 0, auction->buyout, auction->deposit))
                .AddItem(pItem)
                .SendMailTo(trans, MailReceiver(owner, auction->owner.GetCounter()), auction, MAIL_CHECK_MASK_COPIED, 0);
        }
    }
    else
        RemoveAItem(auction->item_guid, true, &trans);
}

//this function sends mail to old bidder
void AuctionHouseMgr::SendAuctionOutbiddedMail(AuctionEntry* auction, uint32 newPrice, Player* newBidder, CharacterDatabaseTransaction trans, bool sendNotification, bool sendMail)
{
    Player* oldBidder = ObjectAccessor::FindConnectedPlayer(auction->bidder);

    uint32 oldBidder_accId = 0;
    if (!oldBidder)
        oldBidder_accId = sCharacterCache->GetCharacterAccountIdByGuid(auction->bidder);

    // old bidder exist
    if (oldBidder || oldBidder_accId)
    {
        sScriptMgr->OnBeforeAuctionHouseMgrSendAuctionOutbiddedMail(this, auction, oldBidder, oldBidder_accId, newBidder, newPrice, sendNotification, sendMail);

        if (oldBidder && newBidder && sendNotification) // can be changed in the hook
            oldBidder->GetSession()->SendAuctionBidderNotification((uint32)auction->GetHouseId(), auction->Id, newBidder->GetGUID(), newPrice, AuctionEntry::CalculateAuctionOutBid(auction->bid), auction->item_template);

        if (sendMail) // can be changed in the hook
            MailDraft(auction->BuildAuctionMailSubject(AUCTION_OUTBIDDED), AuctionEntry::BuildAuctionMailBody(auction->owner, auction->bid, auction->buyout, auction->deposit, auction->GetAuctionCut()))
            .AddMoney(auction->bid)
            .SendMailTo(trans, MailReceiver(oldBidder, auction->bidder.GetCounter()), auction, MAIL_CHECK_MASK_COPIED);
    }
}

//this function sends mail, when auction is cancelled to old bidder
void AuctionHouseMgr::SendAuctionCancelledToBidderMail(AuctionEntry* auction, CharacterDatabaseTransaction trans, bool sendMail)
{
    Player* bidder = ObjectAccessor::FindConnectedPlayer(auction->bidder);

    uint32 bidder_accId = 0;
    if (!bidder)
    {
        bidder_accId = sCharacterCache->GetCharacterAccountIdByGuid(auction->bidder);
    }

    // bidder exist
    if (bidder || bidder_accId)
    {
        sScriptMgr->OnBeforeAuctionHouseMgrSendAuctionCancelledToBidderMail(this, auction, bidder, bidder_accId, sendMail);
        if (sendMail) // can be changed in the hook
            MailDraft(auction->BuildAuctionMailSubject(AUCTION_CANCELLED_TO_BIDDER), AuctionEntry::BuildAuctionMailBody(auction->owner, auction->bid, auction->buyout, auction->deposit))
            .AddMoney(auction->bid)
            .SendMailTo(trans, MailReceiver(bidder, auction->bidder.GetCounter()), auction, MAIL_CHECK_MASK_COPIED);
    }
}

void AuctionHouseMgr::LoadAuctionItems()
{
    uint32 oldMSTime = getMSTime();

    // need to clear in case we are reloading
    if (!_mAitems.empty())
    {
        for (ItemMap::iterator itr = _mAitems.begin(); itr != _mAitems.end(); ++itr)
            delete itr->second;

        _mAitems.clear();
    }

    // data needs to be at first place for Item::LoadFromDB
    CharacterDatabasePreparedStatement* stmt = CharacterDatabase.GetPreparedStatement(CHAR_SEL_AUCTION_ITEMS);
    PreparedQueryResult result = CharacterDatabase.Query(stmt);

    if (!result)
    {
        LOG_WARN("server.loading", ">> Loaded 0 auction items. DB table `auctionhouse` or `item_instance` is empty!");
        LOG_INFO("server.loading", " ");
        return;
    }

    uint32 count = 0;

    do
    {
        Field* fields = result->Fetch();

        ObjectGuid::LowType item_guid = fields[11].Get<uint32>();
        uint32 item_template = fields[12].Get<uint32>();

        ItemTemplate const* proto = sObjectMgr->GetItemTemplate(item_template);
        if (!proto)
        {
            LOG_ERROR("auctionHouse", "AuctionHouseMgr::LoadAuctionItems: Unknown item (GUID: {} id: #{}) in auction, skipped.", item_guid, item_template);
            continue;
        }

        Item* item = NewItemOrBag(proto);
        if (!item->LoadFromDB(item_guid, ObjectGuid::Empty, fields, item_template))
        {
            delete item;
            continue;
        }
        AddAItem(item);

        ++count;
    } while (result->NextRow());

    LOG_INFO("server.loading", ">> Loaded {} auction items in {} ms", count, GetMSTimeDiffToNow(oldMSTime));
    LOG_INFO("server.loading", " ");
}

void AuctionHouseMgr::LoadAuctions()
{
    uint32 oldMSTime = getMSTime();

    CharacterDatabasePreparedStatement* stmt = CharacterDatabase.GetPreparedStatement(CHAR_SEL_AUCTIONS);
    PreparedQueryResult result = CharacterDatabase.Query(stmt);

    if (!result)
    {
        LOG_WARN("server.loading", ">> Loaded 0 auctions. DB table `auctionhouse` is empty.");
        LOG_INFO("server.loading", " ");
        return;
    }

    uint32 count = 0;

    CharacterDatabaseTransaction trans = CharacterDatabase.BeginTransaction();
    do
    {
        Field* fields = result->Fetch();

        AuctionEntry* aItem = new AuctionEntry();
        if (!aItem->LoadFromDB(fields))
        {
            aItem->DeleteFromDB(trans);
            delete aItem;
            continue;
        }

        GetAuctionsMapByHouseId(AuctionHouseId(aItem->houseId))->AddAuction(aItem);
        count++;
    } while (result->NextRow());

    CharacterDatabase.CommitTransaction(trans);

    LOG_INFO("server.loading", ">> Loaded {} auctions in {} ms", count, GetMSTimeDiffToNow(oldMSTime));
    LOG_INFO("server.loading", " ");
}

void AuctionHouseMgr::AddAItem(Item* it)
{
    ASSERT(it);
    ASSERT(_mAitems.find(it->GetGUID()) == _mAitems.end());
    _mAitems[it->GetGUID()] = it;
}

bool AuctionHouseMgr::RemoveAItem(ObjectGuid itemGuid, bool deleteFromDB, CharacterDatabaseTransaction* trans /*= nullptr*/)
{
    ItemMap::iterator i = _mAitems.find(itemGuid);
    if (i == _mAitems.end())
        return false;

    if (deleteFromDB)
    {
        ASSERT(trans);
        i->second->FSetState(ITEM_REMOVED);
        i->second->SaveToDB(*trans);
    }

    _mAitems.erase(i);
    return true;
}

void AuctionHouseMgr::Update(uint32 const diff)
{
    _updateIntervalTimer.Update(diff);
    if (_updateIntervalTimer.Passed())
    {
        sScriptMgr->OnBeforeAuctionHouseMgrUpdate();

        _hordeAuctions.Update();
        _allianceAuctions.Update();
        _neutralAuctions.Update();

        _updateIntervalTimer.Reset();
    }

    _auctionHouseSearcher->Update();
}

AuctionHouseFaction AuctionHouseMgr::GetAuctionHouseFactionFromHouseId(AuctionHouseId ahHouseId)
{
    switch (ahHouseId)
    {
        case AuctionHouseId::Alliance:
            return AuctionHouseFaction::Alliance;
        case AuctionHouseId::Horde:
            return AuctionHouseFaction::Horde;
        case AuctionHouseId::Neutral:
            return AuctionHouseFaction::Neutral;
    }
    return AuctionHouseFaction::Neutral;
}

AuctionHouseEntry const* AuctionHouseMgr::GetAuctionHouseEntryFromFactionTemplate(uint32 factionTemplateId)
{
    AuctionHouseId houseid;
    FactionTemplateEntry const* uEntry = sFactionTemplateStore.LookupEntry(factionTemplateId);

    if (!uEntry || sWorld->getBoolConfig(CONFIG_ALLOW_TWO_SIDE_INTERACTION_AUCTION))
        houseid = AuctionHouseId::Neutral;
    else if (uEntry->ourMask & FACTION_MASK_ALLIANCE)
        houseid = AuctionHouseId::Alliance;
    else if (uEntry->ourMask & FACTION_MASK_HORDE)
        houseid = AuctionHouseId::Horde;
    else
        houseid = AuctionHouseId::Neutral;

    return sAuctionHouseStore.LookupEntry((uint32)houseid);
}

AuctionHouseEntry const* AuctionHouseMgr::GetAuctionHouseEntryFromHouse(AuctionHouseId ahHouseId)
{
    return (sWorld->getBoolConfig(CONFIG_ALLOW_TWO_SIDE_INTERACTION_AUCTION)) ? sAuctionHouseStore.LookupEntry((uint32)AuctionHouseId::Neutral) : sAuctionHouseStore.LookupEntry((uint32)ahHouseId);
}

void AuctionHouseObject::AddAuction(AuctionEntry* auction)
{
    ASSERT(auction);

    _auctionsMap[auction->Id] = auction;
    sAuctionMgr->GetAuctionHouseSearcher()->AddAuction(auction);

    sScriptMgr->OnAuctionAdd(this, auction);
}

bool AuctionHouseObject::RemoveAuction(AuctionEntry* auction)
{
    bool wasInMap = _auctionsMap.erase(auction->Id);
    sAuctionMgr->GetAuctionHouseSearcher()->RemoveAuction(auction);

    sScriptMgr->OnAuctionRemove(this, auction);

    // we need to delete the entry, it is not referenced any more
    delete auction;
    auction = nullptr;

    return wasInMap;
}

void AuctionHouseObject::Update()
{
    time_t checkTime = GameTime::GetGameTime().count() + 60;
    ///- Handle expired auctions

    // If storage is empty, no need to update. next == nullptr in this case.
    if (_auctionsMap.empty())
        return;

    CharacterDatabaseTransaction trans = CharacterDatabase.BeginTransaction();

    for (AuctionEntryMap::iterator itr, iter = _auctionsMap.begin(); iter != _auctionsMap.end(); )
    {
        itr = iter++;
        AuctionEntry* auction = (*itr).second;

        if (auction->expire_time > checkTime)
            continue;

        ///- Either cancel the auction if there was no bidder
        if (!auction->bidder)
        {
            sAuctionMgr->SendAuctionExpiredMail(auction, trans);
            sScriptMgr->OnAuctionExpire(this, auction);
        }
        ///- Or perform the transaction
        else
        {
            //we should send an "item sold" message if the seller is online
            //we send the item to the winner
            //we send the money to the seller
            sAuctionMgr->SendAuctionSuccessfulMail(auction, trans);
            sAuctionMgr->SendAuctionWonMail(auction, trans);
            sScriptMgr->OnAuctionSuccessful(this, auction);
        }

        ///- In any case clear the auction
        auction->DeleteFromDB(trans);

        sAuctionMgr->RemoveAItem(auction->item_guid);
        RemoveAuction(auction);
    }
    CharacterDatabase.CommitTransaction(trans);
}

AuctionHouseFaction AuctionEntry::GetFactionId() const
{
    return AuctionHouseMgr::GetAuctionHouseFactionFromHouseId(houseId);
}

uint32 AuctionEntry::GetAuctionCut() const
{
    int32 cut = int32(CalculatePct(bid, auctionHouseEntry->cutPercent) * sWorld->getRate(RATE_AUCTION_CUT));
    return std::max(cut, 0);
}

uint32 AuctionEntry::GetAuctionOutBid() const
{
    return CalculateAuctionOutBid(bid);
}

/// the sum of outbid is (1% from current bid)*5, if bid is very small, it is 1c
uint32 AuctionEntry::CalculateAuctionOutBid(uint32 bid)
{
    uint32 outbid = CalculatePct(bid, 5);
    return outbid ? outbid : 1;
}

void AuctionEntry::DeleteFromDB(CharacterDatabaseTransaction trans) const
{
    CharacterDatabasePreparedStatement* stmt = CharacterDatabase.GetPreparedStatement(CHAR_DEL_AUCTION);
    stmt->SetData(0, Id);
    trans->Append(stmt);
}

void AuctionEntry::SaveToDB(CharacterDatabaseTransaction trans) const
{
    CharacterDatabasePreparedStatement* stmt = CharacterDatabase.GetPreparedStatement(CHAR_INS_AUCTION);
    stmt->SetData(0, Id);
    stmt->SetData(1, houseId);
    stmt->SetData(2, item_guid.GetCounter());
    stmt->SetData(3, owner.GetCounter());
    stmt->SetData (4, buyout);
    stmt->SetData(5, uint32(expire_time));
    stmt->SetData(6, bidder.GetCounter());
    stmt->SetData (7, bid);
    stmt->SetData (8, startbid);
    stmt->SetData (9, deposit);
    trans->Append(stmt);
}

bool AuctionEntry::LoadFromDB(Field* fields)
{
    Id = fields[0].Get<uint32>();
    houseId = AuctionHouseId(fields[1].Get<uint8>());
    item_guid = ObjectGuid::Create<HighGuid::Item>(fields[2].Get<uint32>());
    item_template = fields[3].Get<uint32>();
    itemCount = fields[4].Get<uint32>();
    owner = ObjectGuid::Create<HighGuid::Player>(fields[5].Get<uint32>());
    buyout = fields[6].Get<uint32>();
    expire_time = fields[7].Get<uint32>();
    bidder = ObjectGuid::Create<HighGuid::Player>(fields[8].Get<uint32>());
    bid = fields[9].Get<uint32>();
    startbid = fields[10].Get<uint32>();
    deposit = fields[11].Get<uint32>();

    auctionHouseEntry = AuctionHouseMgr::GetAuctionHouseEntryFromHouse(houseId);
    if (!auctionHouseEntry)
    {
        LOG_ERROR("auctionHouse", "Auction {} has invalid house id {}", Id, houseId);
        return false;
    }

    // check if sold item exists for guid
    // and item_template in fact (GetAItem will fail if problematic in result check in AuctionHouseMgr::LoadAuctionItems)
    if (!sAuctionMgr->GetAItem(item_guid))
    {
        LOG_ERROR("auctionHouse", "Auction {} has not a existing item : {}", Id, item_guid.ToString());
        return false;
    }
    return true;
}

std::string AuctionEntry::BuildAuctionMailSubject(MailAuctionAnswers response) const
{
    std::ostringstream strm;
    strm << item_template << ":0:" << response << ':' << Id << ':' << itemCount;
    return strm.str();
}

std::string AuctionEntry::BuildAuctionMailBody(ObjectGuid guid, uint32 bid, uint32 buyout, uint32 deposit /*= 0*/, uint32 cut /*= 0*/, uint32 moneyDelay /*= 0*/, uint32 eta /*= 0*/)
{
    std::ostringstream strm;
    strm.width(16);
    strm << std::right << std::hex << guid.GetRawValue();
    strm << std::dec << ':' << bid << ':' << buyout;
    strm << ':' << deposit << ':' << cut;
    strm << ':' << moneyDelay << ':' << eta;
    return strm.str();
}