/*
 * 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) 2005-2014  MaNGOS project <http://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 "config.h"
#include "ScriptMgr.h"
#include "../../game/GossipDef.h"
#include "../../game/GameObject.h"
#include "../../game/Player.h"
#include "../../game/Map.h"
#include "../../game/ObjectMgr.h"
#include "../../game/ScriptMgr.h"
#include "../../game/SpellAuras.h"

// uint8 loglevel = 0;
int nrscripts;
Script* m_scripts[MAX_SCRIPTS];

// -- Scripts to be added --
extern void AddSC_default();
// -------------------

MANGOS_DLL_EXPORT
void ScriptsFree()
{
    // Free resources before library unload
    for (int i = 0; i < nrscripts; ++i)
        delete m_scripts[i];

    nrscripts = 0;
}

MANGOS_DLL_EXPORT
void ScriptsInit()
{
    nrscripts = GetScriptNames().size();
    for (int i = 0; i < MAX_SCRIPTS; ++i)
        m_scripts[i] = NULL;

    // -- Inicialize the Scripts to be Added --
    AddSC_default();
    // ----------------------------------------
}

MANGOS_DLL_EXPORT
char const* ScriptsVersion()
{
    return "Default MaNGOS scripting library";
}

void Script::registerSelf()
{
    if (int id = GetScriptId(Name.c_str()))
        m_scripts[id] = this;
}

MANGOS_DLL_EXPORT
bool GossipHello(Player* player, Creature* _Creature)
{
    Script* tmpscript = m_scripts[_Creature->GetScriptId()];
    if (!tmpscript || !tmpscript->pGossipHello)
        return false;

    player->PlayerTalkClass->ClearMenus();

    return tmpscript->pGossipHello(player, _Creature);
}

MANGOS_DLL_EXPORT
bool GOGossipHello(Player* pPlayer, GameObject* pGo)
{
    Script* tmpscript = m_scripts[pGo->GetGOInfo()->ScriptId];
    if (!tmpscript || !tmpscript->pGOGossipHello)
        return false;

    pPlayer->PlayerTalkClass->ClearMenus();

    return tmpscript->pGOGossipHello(pPlayer, pGo);
}

MANGOS_DLL_EXPORT
bool GossipSelect(Player* player, Creature* _Creature, uint32 sender, uint32 action)
{
    debug_log("DEBUG: Gossip selection, sender: %d, action: %d", sender, action);

    Script* tmpscript = m_scripts[_Creature->GetScriptId()];
    if (!tmpscript || !tmpscript->pGossipSelect)
        return false;

    player->PlayerTalkClass->ClearMenus();

    return tmpscript->pGossipSelect(player, _Creature, sender, action);
}

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

    Script* tmpscript = m_scripts[pGo->GetGOInfo()->ScriptId];
    if (!tmpscript || !tmpscript->pGOGossipSelect)
        return false;

    pPlayer->PlayerTalkClass->ClearMenus();

    return tmpscript->pGOGossipSelect(pPlayer, pGo, sender, action);
}

MANGOS_DLL_EXPORT
bool GossipSelectWithCode(Player* player, Creature* _Creature, uint32 sender, uint32 action, const char* sCode)
{
    debug_log("DEBUG: Gossip selection, sender: %d, action: %d", sender, action);

    Script* tmpscript = m_scripts[_Creature->GetScriptId()];
    if (!tmpscript || !tmpscript->pGossipSelectWithCode)
        return false;

    player->PlayerTalkClass->ClearMenus();

    return tmpscript->pGossipSelectWithCode(player, _Creature, sender, action, sCode);
}

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

    Script* tmpscript = m_scripts[pGo->GetGOInfo()->ScriptId];
    if (!tmpscript || !tmpscript->pGOGossipSelectWithCode)
        return false;

    pPlayer->PlayerTalkClass->ClearMenus();

    return tmpscript->pGOGossipSelectWithCode(pPlayer, pGo, sender, action, sCode);
}

MANGOS_DLL_EXPORT
bool QuestAccept(Player* player, Creature* _Creature, Quest* _Quest)
{
    Script* tmpscript = m_scripts[_Creature->GetScriptId()];
    if (!tmpscript || !tmpscript->pQuestAccept)
        return false;

    player->PlayerTalkClass->ClearMenus();

    return tmpscript->pQuestAccept(player, _Creature, _Quest);
}

MANGOS_DLL_EXPORT
bool QuestSelect(Player* player, Creature* _Creature, Quest* _Quest)
{
    Script* tmpscript = m_scripts[_Creature->GetScriptId()];
    if (!tmpscript || !tmpscript->pQuestSelect)
        return false;

    player->PlayerTalkClass->ClearMenus();

    return tmpscript->pQuestSelect(player, _Creature, _Quest);
}

MANGOS_DLL_EXPORT
bool QuestComplete(Player* player, Creature* _Creature, Quest* _Quest)
{
    Script* tmpscript = m_scripts[_Creature->GetScriptId()];
    if (!tmpscript || !tmpscript->pQuestComplete)
        return false;

    player->PlayerTalkClass->ClearMenus();

    return tmpscript->pQuestComplete(player, _Creature, _Quest);
}

MANGOS_DLL_EXPORT
bool ChooseReward(Player* player, Creature* _Creature, Quest* _Quest, uint32 opt)
{
    Script* tmpscript = m_scripts[_Creature->GetScriptId()];
    if (!tmpscript || !tmpscript->pChooseReward)
        return false;

    player->PlayerTalkClass->ClearMenus();

    return tmpscript->pChooseReward(player, _Creature, _Quest, opt);
}

MANGOS_DLL_EXPORT
uint32 NPCDialogStatus(Player* player, Creature* _Creature)
{
    Script* tmpscript = m_scripts[_Creature->GetScriptId()];
    if (!tmpscript || !tmpscript->pNPCDialogStatus)
        return 100;

    player->PlayerTalkClass->ClearMenus();

    return tmpscript->pNPCDialogStatus(player, _Creature);
}

MANGOS_DLL_EXPORT
uint32 GODialogStatus(Player* player, GameObject* _GO)
{
    Script* tmpscript = m_scripts[_GO->GetGOInfo()->ScriptId];
    if (!tmpscript || !tmpscript->pGODialogStatus)
        return 100;

    player->PlayerTalkClass->ClearMenus();

    return tmpscript->pGODialogStatus(player, _GO);
}

MANGOS_DLL_EXPORT
bool ItemHello(Player* player, Item* _Item, Quest* _Quest)
{
    Script* tmpscript = m_scripts[_Item->GetProto()->ScriptId];
    if (!tmpscript || !tmpscript->pItemHello)
        return false;

    player->PlayerTalkClass->ClearMenus();

    return tmpscript->pItemHello(player, _Item, _Quest);
}

MANGOS_DLL_EXPORT
bool ItemQuestAccept(Player* player, Item* _Item, Quest* _Quest)
{
    Script* tmpscript = m_scripts[_Item->GetProto()->ScriptId];
    if (!tmpscript || !tmpscript->pItemQuestAccept)
        return false;

    player->PlayerTalkClass->ClearMenus();

    return tmpscript->pItemQuestAccept(player, _Item, _Quest);
}

MANGOS_DLL_EXPORT
bool GOHello(Player* player, GameObject* _GO)
{
    Script* tmpscript = m_scripts[_GO->GetGOInfo()->ScriptId];
    if (!tmpscript || !tmpscript->pGOHello)
        return false;

    player->PlayerTalkClass->ClearMenus();

    return tmpscript->pGOHello(player, _GO);
}

MANGOS_DLL_EXPORT
bool GOQuestAccept(Player* player, GameObject* _GO, Quest* _Quest)
{
    Script* tmpscript = m_scripts[_GO->GetGOInfo()->ScriptId];
    if (!tmpscript || !tmpscript->pGOQuestAccept)
        return false;

    player->PlayerTalkClass->ClearMenus();

    return tmpscript->pGOQuestAccept(player, _GO, _Quest);
}

MANGOS_DLL_EXPORT
bool GOChooseReward(Player* player, GameObject* _GO, Quest* _Quest, uint32 opt)
{
    Script* tmpscript = m_scripts[_GO->GetGOInfo()->ScriptId];
    if (!tmpscript || !tmpscript->pGOChooseReward)
        return false;

    player->PlayerTalkClass->ClearMenus();
    return tmpscript->pGOChooseReward(player, _GO, _Quest, opt);
}

MANGOS_DLL_EXPORT
bool AreaTrigger(Player* player, AreaTriggerEntry const* atEntry)
{
    Script* tmpscript = m_scripts[GetAreaTriggerScriptId(atEntry->id)];
    if (!tmpscript || !tmpscript->pAreaTrigger)
        return false;

    return tmpscript->pAreaTrigger(player, atEntry);
}

MANGOS_DLL_EXPORT
bool ProcessEventId(uint32 eventId, Object* source, Object* target, bool isStart)
{
    Script* tmpscript = m_scripts[GetEventIdScriptId(eventId)];
    if (!tmpscript || !tmpscript->pProcessEventId)
        return false;

    // isStart are normally true. For taxi event id at arrival, it's false
    return tmpscript->pProcessEventId(eventId, source, target, isStart);
}

MANGOS_DLL_EXPORT
bool ItemUse(Player* player, Item* _Item, SpellCastTargets const& targets)
{
    Script* tmpscript = m_scripts[_Item->GetProto()->ScriptId];
    if (!tmpscript || !tmpscript->pItemUse)
        return false;

    return tmpscript->pItemUse(player, _Item, targets);
}

MANGOS_DLL_EXPORT
CreatureAI* GetAI(Creature* _Creature)
{
    Script* tmpscript = m_scripts[_Creature->GetScriptId()];
    if (!tmpscript || !tmpscript->GetAI)
        return NULL;

    return tmpscript->GetAI(_Creature);
}

MANGOS_DLL_EXPORT
InstanceData* CreateInstanceData(Map* map)
{
    if (!map->IsDungeon())
        return NULL;

    Script* tmpscript = m_scripts[((InstanceMap*)map)->GetScriptId()];
    if (!tmpscript || !tmpscript->GetInstanceData)
        return NULL;

    return tmpscript->GetInstanceData(map);
}

MANGOS_DLL_EXPORT
bool EffectDummyGameObj(Unit* caster, uint32 spellId, SpellEffectIndex effIndex, GameObject* gameObjTarget)
{
    Script* tmpscript = m_scripts[gameObjTarget->GetGOInfo()->ScriptId];
    if (!tmpscript || !tmpscript->pEffectDummyGameObj)
        return false;

    return tmpscript->pEffectDummyGameObj(caster, spellId, effIndex, gameObjTarget);
}

MANGOS_DLL_EXPORT
bool EffectDummyCreature(Unit* caster, uint32 spellId, SpellEffectIndex effIndex, Creature* crTarget)
{
    Script* tmpscript = m_scripts[crTarget->GetScriptId()];
    if (!tmpscript || !tmpscript->pEffectDummyCreature)
        return false;

    return tmpscript->pEffectDummyCreature(caster, spellId, effIndex, crTarget);
}

MANGOS_DLL_EXPORT
bool EffectDummyItem(Unit* caster, uint32 spellId, SpellEffectIndex effIndex, Item* itemTarget)
{
    Script* tmpscript = m_scripts[itemTarget->GetProto()->ScriptId];
    if (!tmpscript || !tmpscript->pEffectDummyItem)
        return false;

    return tmpscript->pEffectDummyItem(caster, spellId, effIndex, itemTarget);
}

MANGOS_DLL_EXPORT
bool EffectAuraDummy(const Aura* pAura, bool apply)
{
    Script* tmpscript = m_scripts[((Creature*)pAura->GetTarget())->GetScriptId()];
    if (!tmpscript || !tmpscript->pEffectAuraDummy)
        return false;

    return tmpscript->pEffectAuraDummy(pAura, apply);
}

void ScriptedAI::UpdateAI(const uint32)
{
    // Check if we have a current target
    if (m_creature->isAlive() && m_creature->SelectHostileTarget() && m_creature->getVictim())
    {
        // If we are within range melee the target
        if (m_creature->IsWithinDistInMap(m_creature->getVictim(), ATTACK_DISTANCE))
        {
            if (m_creature->isAttackReady())
            {
                m_creature->AttackerStateUpdate(m_creature->getVictim());
                m_creature->resetAttackTimer();
            }
        }
    }
}

void ScriptedAI::EnterEvadeMode()
{
    m_creature->CombatStop(true);
    if (m_creature->isAlive())
        DoGoHome();
}

void ScriptedAI::DoStartAttack(Unit* victim)
{
    if (m_creature->Attack(victim, true))
        m_creature->GetMotionMaster()->MoveChase(victim);
}

void ScriptedAI::DoStopAttack()
{
    if (m_creature->getVictim() != NULL)
        m_creature->AttackStop();
}

void ScriptedAI::DoGoHome()
{
    if (!m_creature->getVictim() && m_creature->isAlive())
        m_creature->GetMotionMaster()->MoveTargetedHome();
}