/* Copyright (C) 2006 - 2012 ScriptDev2 
 * This program is free software licensed under GPL version 2
 * Please see the included DOCS/LICENSE.TXT for more information */

#include "precompiled.h"
#include "Config/Config.h"
#include "config.h"
#include "Database/DatabaseEnv.h"
#include "DBCStores.h"
#include "ObjectMgr.h"
#include "ProgressBar.h"
#include "../system/ScriptLoader.h"
#include "../system/system.h"
#include "../../../game/ScriptMgr.h"
#include "World.h"

typedef std::vector SDScriptVec;
typedef std::map SDScriptMap;

int num_sc_scripts;
SDScriptVec *m_scripts = NULL;
SDScriptMap *m_scriptStorage = NULL;    // Not registered scripts storage

Config SD2Config;

/**********************************************************************
+additions for windows compiler
**********************************************************************/
#ifdef _WIN32
template bool MaNGOS::Singleton::si_destroyed;
template bool MaNGOS::Singleton::si_destroyed;
template World *MaNGOS::Singleton::si_instance;
World::World()
{
}
World::~World()
{
}
ObjectMgr::~ObjectMgr()
{
}
#endif
/***********************************************************************/

QueryResult* strSD2Pquery(char* str)
{
    return SD2Database.Query(str);
}

void FillSpellSummary();

void LoadDatabase()
{

    std::string strSD2DBinfo = SD2Config.GetStringDefault("ScriptDev2DatabaseInfo", "");

    if (strSD2DBinfo.empty())
    {
        error_log("SD2: Missing Scriptdev2 database info from configuration file. Load database aborted.");
        return;
    }

    // Initialize connection to DB
    if (SD2Database.Initialize(strSD2DBinfo.c_str()))
    {
        outstring_log("SD2: ScriptDev2 database initialized.");
        outstring_log("");

        pSystemMgr.LoadVersion();
        pSystemMgr.LoadScriptTexts();
        pSystemMgr.LoadScriptTextsCustom();
        pSystemMgr.LoadScriptGossipTexts();
        pSystemMgr.LoadScriptWaypoints();
    }
    else
    {
        error_log("SD2: Unable to connect to Database. Load database aborted.");
        return;
    }

}

struct TSpellSummary
{
    uint8 Targets;                                          // set of enum SelectTarget
    uint8 Effects;                                          // set of enum SelectEffect
} extern *SpellSummary;

MANGOS_DLL_EXPORT
void FreeScriptLibrary()
{
    // Free Spell Summary
    delete[] SpellSummary;

    // Free resources before library unload
    for (SDScriptVec::const_iterator itr = m_scripts->begin(); itr != m_scripts->end(); ++itr)
        delete *itr;

    delete m_scripts;

    for (SDScriptMap::const_iterator itr = m_scriptStorage->begin(); itr != m_scriptStorage->end(); ++itr)
        delete itr->second;

    delete m_scriptStorage;

    num_sc_scripts = 0;
    SD2Database.HaltDelayThread();
}

MANGOS_DLL_EXPORT
void InitScriptLibrary()
{
    // ScriptDev2 startup
    outstring_log("");
    outstring_log(" MMM  MMM    MM");
    outstring_log("M  MM M  M  M  M");
    outstring_log("MM    M   M   M");
    outstring_log(" MMM  M   M  M");
    outstring_log("   MM M   M MMMM");
    outstring_log("MM  M M  M ");
    outstring_log(" MMM  MMM  http://www.scriptdev2.com");
    outstring_log("R2 modifications included (https://github.com/mangosR2/scriptdev2)");
    outstring_log(_VERSION);

    // Get configuration file
    if (!SD2Config.SetSource(_SCRIPTDEV2_CONFIG))
        error_log("SD2: Unable to open configuration file. Database will be unaccessible. Configuration values will use default.");
    else
        outstring_log("SD2: Using configuration file %s",_SCRIPTDEV2_CONFIG);

    // Check config file version
    if (SD2Config.GetIntDefault("ConfVersion", 0) != SD2_CONF_VERSION)
        error_log("SD2: Configuration file version doesn't match expected version. Some config variables may be wrong or missing.");

    outstring_log("");

    // Load database (must be called after SD2Config.SetSource).
    LoadDatabase();

    outstring_log("SD2: Loading C++ scripts");
    BarGoLink bar(1);
    bar.step();
    outstring_log("");

    // Initialize script ids to needed ammount of assigned ScriptNames (from core)
    m_scripts = new SDScriptVec(GetScriptIdsCount(), NULL);

    m_scriptStorage = new SDScriptMap();

    FillSpellSummary();

    AddScripts();

    // Check existance scripts for all registered by core script names
    for (uint32 i = 1; i < GetScriptIdsCount(); ++i)
    {
        if (!m_scripts->at(i))
            error_log("SD2: No script found for ScriptName '%s'.", GetScriptName(i));
    }

    outstring_log(">> Loaded %i C++ Scripts.", num_sc_scripts);
}

//*********************************
//*** Functions used globally ***

/**
 * Function that does script text
 *
 * @param iTextEntry Entry of the text, stored in SD2-database
 * @param pSource Source of the text
 * @param pTarget Can be NULL (depending on CHAT_TYPE of iTextEntry). Possible target for the text
 */
void DoScriptText(int32 iTextEntry, WorldObject* pSource, Unit* pTarget)
{
    if (!pSource)
    {
        error_log("SD2: DoScriptText entry %i, invalid Source pointer.", iTextEntry);
        return;
    }

    if (iTextEntry >= 0)
    {
        error_log("SD2: DoScriptText with source entry %u (TypeId=%u, guid=%u) attempts to process text entry %i, but text entry must be negative.",
            pSource->GetEntry(), pSource->GetTypeId(), pSource->GetGUIDLow(), iTextEntry);

        return;
    }

    const StringTextData* pData = pSystemMgr.GetTextData(iTextEntry);
    if (!pData)
    {
        error_log("SD2: DoScriptText with source entry %u (TypeId=%u, guid=%u) could not find text entry %i.",
            pSource->GetEntry(), pSource->GetTypeId(), pSource->GetGUIDLow(), iTextEntry);

        return;
    }

    debug_log("SD2: DoScriptText: text entry=%i, Sound=%u, Type=%u, Language=%u, Emote=%u",
        iTextEntry, pData->uiSoundId, pData->uiType, pData->uiLanguage, pData->uiEmote);

    if (pData->uiSoundId)
    {
        if (GetSoundEntriesStore()->LookupEntry(pData->uiSoundId))
        {
            if (pData->uiType == CHAT_TYPE_ZONE_YELL)
                pSource->GetMap()->PlayDirectSoundToMap(pData->uiSoundId, pSource->GetZoneId());
            else if (pData->uiType == CHAT_TYPE_WHISPER || pData->uiType == CHAT_TYPE_BOSS_WHISPER)
            {
                // An error will be displayed for the text
                if (pTarget && pTarget->GetTypeId() == TYPEID_PLAYER)
                    pSource->PlayDirectSound(pData->uiSoundId, (Player*)pTarget);
            }
            else
                pSource->PlayDirectSound(pData->uiSoundId);
        }
        else
            error_log("SD2: DoScriptText entry %i tried to process invalid sound id %u.", iTextEntry, pData->uiSoundId);
    }

    if (pData->uiEmote)
    {
        if (pSource->GetTypeId() == TYPEID_UNIT || pSource->GetTypeId() == TYPEID_PLAYER)
            ((Unit*)pSource)->HandleEmote(pData->uiEmote);
        else
            error_log("SD2: DoScriptText entry %i tried to process emote for invalid TypeId (%u).", iTextEntry, pSource->GetTypeId());
    }

    switch(pData->uiType)
    {
        case CHAT_TYPE_SAY:
            pSource->MonsterSay(iTextEntry, pData->uiLanguage, pTarget);
            break;
        case CHAT_TYPE_YELL:
            pSource->MonsterYell(iTextEntry, pData->uiLanguage, pTarget);
            break;
        case CHAT_TYPE_TEXT_EMOTE:
            pSource->MonsterTextEmote(iTextEntry, pTarget);
            break;
        case CHAT_TYPE_BOSS_EMOTE:
            pSource->MonsterTextEmote(iTextEntry, pTarget, true);
            break;
        case CHAT_TYPE_WHISPER:
        {
            if (pTarget && pTarget->GetTypeId() == TYPEID_PLAYER)
                pSource->MonsterWhisper(iTextEntry, pTarget);
            else
                error_log("SD2: DoScriptText entry %i cannot whisper without target unit (TYPEID_PLAYER).", iTextEntry);

            break;
        }
        case CHAT_TYPE_BOSS_WHISPER:
        {
            if (pTarget && pTarget->GetTypeId() == TYPEID_PLAYER)
                pSource->MonsterWhisper(iTextEntry, pTarget, true);
            else
                error_log("SD2: DoScriptText entry %i cannot whisper without target unit (TYPEID_PLAYER).", iTextEntry);

            break;
        }
        case CHAT_TYPE_ZONE_YELL:
            pSource->MonsterYellToZone(iTextEntry, pData->uiLanguage, pTarget);
            break;
    }
}

/**
 * Function that either simulates or does script text for a map
 *
 * @param iTextEntry Entry of the text, stored in SD2-database, only type CHAT_TYPE_ZONE_YELL supported
 * @param uiCreatureEntry Id of the creature of whom saying will be simulated
 * @param pMap Given Map on which the map-wide text is displayed
 * @param pCreatureSource Can be NULL. If pointer to Creature is given, then the creature does the map-wide text
 * @param pTarget Can be NULL. Possible target for the text
 */
void DoOrSimulateScriptTextForMap(int32 iTextEntry, uint32 uiCreatureEntry, Map* pMap, Creature* pCreatureSource /*=NULL*/, Unit* pTarget /*=NULL*/)
{
    if (!pMap)
    {
        error_log("SD2: DoOrSimulateScriptTextForMap entry %i, invalid Map pointer.", iTextEntry);
        return;
    }

    if (iTextEntry >= 0)
    {
        error_log("SD2: DoOrSimulateScriptTextForMap with source entry %u for map %u attempts to process text entry %i, but text entry must be negative.", uiCreatureEntry, pMap->GetId(), iTextEntry);
        return;
    }

    CreatureInfo const* pInfo = GetCreatureTemplateStore(uiCreatureEntry);
    if (!pInfo)
    {
         error_log("SD2: DoOrSimulateScriptTextForMap has invalid source entry %u for map %u.", uiCreatureEntry, pMap->GetId());
        return;
    }

    const StringTextData* pData = pSystemMgr.GetTextData(iTextEntry);
    if (!pData)
    {
        error_log("SD2: DoOrSimulateScriptTextForMap with source entry %u for map %u could not find text entry %i.", uiCreatureEntry, pMap->GetId(), iTextEntry);
        return;
    }

    debug_log("SD2: DoOrSimulateScriptTextForMap: text entry=%i, Sound=%u, Type=%u, Language=%u, Emote=%u",
        iTextEntry, pData->uiSoundId, pData->uiType, pData->uiLanguage, pData->uiEmote);

    if (pData->uiType != CHAT_TYPE_ZONE_YELL)
    {
        error_log("SD2: DoSimulateScriptTextForMap entry %i has not supported chat type %u.", iTextEntry, pData->uiType);
        return;
    }

    if (pData->uiSoundId)
    {
        if (GetSoundEntriesStore()->LookupEntry(pData->uiSoundId))
            pMap->PlayDirectSoundToMap(pData->uiSoundId);
        else
            error_log("SD2: DoOrSimulateScriptTextForMap entry %i tried to process invalid sound id %u.", iTextEntry, pData->uiSoundId);
    }

    if (pCreatureSource)                                // If provided pointer for sayer, use direct version
        pMap->MonsterYellToMap(pCreatureSource->GetObjectGuid(), iTextEntry, pData->uiLanguage, pTarget);
    else                                                // Simulate yell
        pMap->MonsterYellToMap(pInfo, iTextEntry, pData->uiLanguage, pTarget);
}

//*********************************
//*** Functions used internally ***

void Script::RegisterSelf(bool bReportError)
{
    if (uint32 id = GetScriptId(Name.c_str()))
    {
        m_scripts->at(id) = this;
        ++num_sc_scripts;
    }
    else
    {
        if (bReportError)
            error_log("SD2: Script registering but ScriptName %s is not assigned in database. Script will not be used.", Name.c_str());

        m_scriptStorage->insert(std::make_pair(Name.c_str(), this));
    }
}

//********************************
//*** Functions to be Exported ***

MANGOS_DLL_EXPORT
char const* GetScriptLibraryVersion()
{
    return strSD2Version.c_str();
}

MANGOS_DLL_EXPORT
bool GossipHello(Player* pPlayer, Creature* pCreature)
{
    if (!pCreature)
        return false;

    Script* pTempScript = m_scripts->at(pCreature->GetScriptId());

    if (!pTempScript || !pTempScript->pGossipHello)
        return false;

    pPlayer->PlayerTalkClass->ClearMenus();

    return pTempScript->pGossipHello(pPlayer, pCreature);
}

MANGOS_DLL_EXPORT
bool GOGossipHello(Player* pPlayer, GameObject* pGo)
{
    if (!pGo)
        return false;

    Script* pTempScript = m_scripts->at(pGo->GetGOInfo()->ScriptId);

    if (!pTempScript || !pTempScript->pGossipHelloGO)
        return false;

    pPlayer->PlayerTalkClass->ClearMenus();

    return pTempScript->pGossipHelloGO(pPlayer, pGo);
}

MANGOS_DLL_EXPORT
bool GossipSelect(Player* pPlayer, Creature* pCreature, uint32 uiSender, uint32 uiAction)
{
    debug_log("SD2: Gossip selection, sender: %u, action: %u", uiSender, uiAction);

    if (!pCreature)
        return false;

    Script* pTempScript = m_scripts->at(pCreature->GetScriptId());

    if (!pTempScript || !pTempScript->pGossipSelect)
        return false;

//    pPlayer->PlayerTalkClass->ClearMenus();
//    this expression is wrong, where 'return false' from script's GossipSelect
//    not return menu ID (cleared in this string) and not allow to work with database-based menus

    return pTempScript->pGossipSelect(pPlayer, pCreature, uiSender, uiAction);
}

MANGOS_DLL_EXPORT
bool GOGossipSelect(Player* pPlayer, GameObject* pGo, uint32 uiSender, uint32 uiAction)
{
    debug_log("SD2: GO Gossip selection, sender: %u, action: %u", uiSender, uiAction);

    if (!pGo)
        return false;

    Script* pTempScript = m_scripts->at(pGo->GetGOInfo()->ScriptId);

    if (!pTempScript || !pTempScript->pGossipSelectGO)
        return false;

    pPlayer->PlayerTalkClass->ClearMenus();

    return pTempScript->pGossipSelectGO(pPlayer, pGo, uiSender, uiAction);
}

MANGOS_DLL_EXPORT
bool GossipSelectWithCode(Player* pPlayer, Creature* pCreature, uint32 uiSender, uint32 uiAction, const char* sCode)
{
    debug_log("SD2: Gossip selection with code, sender: %u, action: %u", uiSender, uiAction);

    if (!pCreature)
        return false;

    Script* pTempScript = m_scripts->at(pCreature->GetScriptId());

    if (!pTempScript || !pTempScript->pGossipSelectWithCode)
        return false;

    pPlayer->PlayerTalkClass->ClearMenus();

    return pTempScript->pGossipSelectWithCode(pPlayer, pCreature, uiSender, uiAction, sCode);
}

MANGOS_DLL_EXPORT
bool GOGossipSelectWithCode(Player* pPlayer, GameObject* pGo, uint32 uiSender, uint32 uiAction, const char* sCode)
{
    debug_log("SD2: GO Gossip selection with code, sender: %u, action: %u", uiSender, uiAction);

    if (!pGo)
        return false;

    Script* pTempScript = m_scripts->at(pGo->GetGOInfo()->ScriptId);

    if (!pTempScript || !pTempScript->pGossipSelectGOWithCode)
        return false;

    pPlayer->PlayerTalkClass->ClearMenus();

    return pTempScript->pGossipSelectGOWithCode(pPlayer, pGo, uiSender, uiAction, sCode);
}

MANGOS_DLL_EXPORT
bool QuestAccept(Player* pPlayer, Creature* pCreature, const Quest* pQuest)
{
    if (!pCreature)
        return false;

    Script* pTempScript = m_scripts->at(pCreature->GetScriptId());

    if (!pTempScript || !pTempScript->pQuestAcceptNPC)
        return false;

    pPlayer->PlayerTalkClass->ClearMenus();

    return pTempScript->pQuestAcceptNPC(pPlayer, pCreature, pQuest);
}

MANGOS_DLL_EXPORT
bool QuestRewarded(Player* pPlayer, Creature* pCreature, Quest const* pQuest)
{
    if (!pCreature)
        return false;

    Script* pTempScript = m_scripts->at(pCreature->GetScriptId());

    if (!pTempScript || !pTempScript->pQuestRewardedNPC)
        return false;

    pPlayer->PlayerTalkClass->ClearMenus();

    return pTempScript->pQuestRewardedNPC(pPlayer, pCreature, pQuest);
}

MANGOS_DLL_EXPORT
uint32 GetNPCDialogStatus(Player* pPlayer, Creature* pCreature)
{
    Script* pTempScript = m_scripts->at(pCreature->GetScriptId());

    if (!pTempScript || !pTempScript->pDialogStatusNPC)
        return 100;

    pPlayer->PlayerTalkClass->ClearMenus();

    return pTempScript->pDialogStatusNPC(pPlayer, pCreature);
}

MANGOS_DLL_EXPORT
uint32 GetGODialogStatus(Player* pPlayer, GameObject* pGo)
{
    if (!pGo)
        return false;

    Script* pTempScript = m_scripts->at(pGo->GetGOInfo()->ScriptId);

    if (!pTempScript || !pTempScript->pDialogStatusGO)
        return 100;

    pPlayer->PlayerTalkClass->ClearMenus();

    return pTempScript->pDialogStatusGO(pPlayer, pGo);
}

MANGOS_DLL_EXPORT
bool ItemQuestAccept(Player* pPlayer, Item* pItem, Quest const* pQuest)
{
    if (!pItem)
        return false;

    Script* pTempScript = m_scripts->at(pItem->GetProto()->ScriptId);

    if (!pTempScript || !pTempScript->pQuestAcceptItem)
        return false;

    pPlayer->PlayerTalkClass->ClearMenus();

    return pTempScript->pQuestAcceptItem(pPlayer, pItem, pQuest);
}

MANGOS_DLL_EXPORT
bool GOUse(Player* pPlayer, GameObject* pGo)
{
    if (!pGo)
        return false;

    Script* pTempScript = m_scripts->at(pGo->GetGOInfo()->ScriptId);

    if (!pTempScript || !pTempScript->pGOUse)
        return false;

    return pTempScript->pGOUse(pPlayer, pGo);
}

MANGOS_DLL_EXPORT
bool GOQuestAccept(Player* pPlayer, GameObject* pGo, const Quest* pQuest)
{
    if (!pGo)
        return false;

    Script* pTempScript = m_scripts->at(pGo->GetGOInfo()->ScriptId);

    if (!pTempScript || !pTempScript->pQuestAcceptGO)
        return false;

    pPlayer->PlayerTalkClass->ClearMenus();

    return pTempScript->pQuestAcceptGO(pPlayer, pGo, pQuest);
}

MANGOS_DLL_EXPORT
bool GOQuestRewarded(Player* pPlayer, GameObject* pGo, Quest const* pQuest)
{
    if (!pGo)
        return false;

    Script* pTempScript = m_scripts->at(pGo->GetGOInfo()->ScriptId);

    if (!pTempScript || !pTempScript->pQuestRewardedGO)
        return false;

    pPlayer->PlayerTalkClass->ClearMenus();

    return pTempScript->pQuestRewardedGO(pPlayer, pGo, pQuest);
}

MANGOS_DLL_EXPORT
bool AreaTrigger(Player* pPlayer, AreaTriggerEntry const* atEntry)
{
    Script* pTempScript = m_scripts->at(GetAreaTriggerScriptId(atEntry->id));

    if (!pTempScript || !pTempScript->pAreaTrigger)
        return false;

    return pTempScript->pAreaTrigger(pPlayer, atEntry);
}

MANGOS_DLL_EXPORT
bool ProcessEvent(uint32 uiEventId, Object* pSource, Object* pTarget, bool bIsStart)
{
    Script* pTempScript = m_scripts->at(GetEventIdScriptId(uiEventId));

    if (!pTempScript || !pTempScript->pProcessEventId)
        return false;

    // bIsStart may be false, when event is from taxi node events (arrival=false, departure=true)
    return pTempScript->pProcessEventId(uiEventId, pSource, pTarget, bIsStart);
}

MANGOS_DLL_EXPORT
CreatureAI* GetCreatureAI(Creature* pCreature)
{
    if (!pCreature)
        return false;

    Script* pTempScript = m_scripts->at(pCreature->GetScriptId());

    if (!pTempScript || !pTempScript->GetAI)
        return NULL;

    return pTempScript->GetAI(pCreature);
}

MANGOS_DLL_EXPORT
bool ItemUse(Player* pPlayer, Item* pItem, SpellCastTargets const& targets)
{
    if (!pItem)
        return false;

    Script* pTempScript = m_scripts->at(pItem->GetProto()->ScriptId);

    if (!pTempScript || !pTempScript->pItemUse)
        return false;

    return pTempScript->pItemUse(pPlayer, pItem, targets);
}

MANGOS_DLL_EXPORT
bool EffectDummyCreature(Unit* pCaster, uint32 spellId, SpellEffectIndex effIndex, Creature* pTarget)
{
    if (!pTarget)
        return false;

    Script* pTempScript = m_scripts->at(pTarget->GetScriptId());

    if (!pTempScript || !pTempScript->pEffectDummyNPC)
        return false;

    return pTempScript->pEffectDummyNPC(pCaster, spellId, effIndex, pTarget);
}

MANGOS_DLL_EXPORT
bool EffectDummyGameObject(Unit* pCaster, uint32 spellId, SpellEffectIndex effIndex, GameObject* pTarget)
{
    if (!pTarget)
        return false;

    Script* pTempScript = m_scripts->at(pTarget->GetGOInfo()->ScriptId);

    if (!pTempScript || !pTempScript->pEffectDummyGO)
        return false;

    return pTempScript->pEffectDummyGO(pCaster, spellId, effIndex, pTarget);
}

MANGOS_DLL_EXPORT
bool EffectDummyItem(Unit* pCaster, uint32 spellId, SpellEffectIndex effIndex, Item* pTarget)
{
    if (!pTarget)
        return false;

    Script* pTempScript = m_scripts->at(pTarget->GetProto()->ScriptId);

    if (!pTempScript || !pTempScript->pEffectDummyItem)
        return false;

    return pTempScript->pEffectDummyItem(pCaster, spellId, effIndex, pTarget);
}

MANGOS_DLL_EXPORT
bool AuraDummy(Aura const* pAura, bool bApply)
{
    Script* pTempScript = m_scripts->at(((Creature*)pAura->GetTarget())->GetScriptId());

    if (!pTempScript || !pTempScript->pEffectAuraDummy)
        return false;

    return pTempScript->pEffectAuraDummy(pAura, bApply);
}

MANGOS_DLL_EXPORT
InstanceData* CreateInstanceData(Map* pMap)
{
    Script* pTempScript = m_scripts->at(pMap->GetScriptId());

    if (!pTempScript || !pTempScript->GetInstanceData)
        return NULL;

    return pTempScript->GetInstanceData(pMap);
}

Script* GetScriptByName(std::string scriptName)
{
    SDScriptMap::const_iterator itr = m_scriptStorage->find(scriptName);
    if (itr != m_scriptStorage->end())
        return itr->second;
    else
        return NULL;
}