/*
 * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
 *
 * Copyright (C) 2008-2009 Trinity <http://www.trinitycore.org/>
 *
 * 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
 */

#include "Totem.h"
#include "WorldPacket.h"
#include "Log.h"
#include "Group.h"
#include "Player.h"
#include "ObjectMgr.h"
#include "SpellMgr.h"

Totem::Totem(SummonPropertiesEntry const *properties, Unit *owner) : Minion(properties, owner)
{
    m_unitTypeMask |= UNIT_MASK_TOTEM;
    m_duration = 0;
    m_type = TOTEM_PASSIVE;
}

void Totem::Update( uint32 time )
{
    if (!m_owner->isAlive() || !isAlive())
    {
        UnSummon();                                         // remove self
        return;
    }

    if (m_duration <= time)
    {
        UnSummon();                                         // remove self
        return;
    }
    else
        m_duration -= time;

    Creature::Update( time );
}

void Totem::InitStats(uint32 duration)
{
    Minion::InitStats(duration);

    CreatureInfo const *cinfo = GetCreatureInfo();
    if(m_owner->GetTypeId() == TYPEID_PLAYER && cinfo)
    {
        uint32 display_id = objmgr.ChooseDisplayId(((Player*)m_owner)->GetTeam(), cinfo);
        CreatureModelInfo const *minfo = objmgr.GetCreatureModelRandomGender(display_id);
        if (minfo)
            display_id = minfo->modelid;
        SetDisplayId(display_id);
    }

    // Get spell casted by totem
    SpellEntry const * totemSpell = sSpellStore.LookupEntry(GetSpell());
    if (totemSpell)
    {
        // If spell have cast time -> so its active totem
        if (GetSpellCastTime(totemSpell))
            m_type = TOTEM_ACTIVE;
    }

    if(GetEntry() == SENTRY_TOTEM_ENTRY)
        SetReactState(REACT_AGGRESSIVE);

    m_duration = duration;

    SetLevel(m_owner->getLevel());
}

void Totem::InitSummon()
{
    WorldPacket data(SMSG_GAMEOBJECT_SPAWN_ANIM_OBSOLETE, 8);
    data << GetGUID();
    SendMessageToSet(&data, true);

    if(m_type == TOTEM_PASSIVE)
        CastSpell(this, GetSpell(), true); 

    // Some totems can have both instant effect and passive spell
    if (GetSpell(1))
        CastSpell(this, GetSpell(1), true);
}

void Totem::UnSummon()
{
    SendObjectDeSpawnAnim(GetGUID());

    CombatStop();
    RemoveAurasDueToSpell(GetSpell());

    // clear owenr's totem slot
    for(int i = SUMMON_SLOT_TOTEM; i < MAX_TOTEM_SLOT; ++i)
    {
        if(m_owner->m_SummonSlot[i]==GetGUID())
        {
            m_owner->m_SummonSlot[i] = 0;
            break;
        }
    }

    m_owner->RemoveAurasDueToSpell(GetSpell());

    //remove aura all party members too
    Group *pGroup = NULL;
    if (m_owner->GetTypeId() == TYPEID_PLAYER)
    {
        // Not only the player can summon the totem (scripted AI)
        pGroup = ((Player*)m_owner)->GetGroup();
        if (pGroup)
        {
            for(GroupReference *itr = pGroup->GetFirstMember(); itr != NULL; itr = itr->next())
            {
                Player* Target = itr->getSource();
                if(Target && pGroup->SameSubGroup((Player*)m_owner, Target))
                    Target->RemoveAurasDueToSpell(GetSpell());
            }
        }
    }

    AddObjectToRemoveList();
}

bool Totem::IsImmunedToSpellEffect(SpellEntry const* spellInfo, uint32 index) const
{
    // TODO: possibly all negative auras immune?
    switch(spellInfo->EffectApplyAuraName[index])
    {
        case SPELL_AURA_PERIODIC_DAMAGE:
        case SPELL_AURA_PERIODIC_LEECH:
        case SPELL_AURA_MOD_FEAR:
        case SPELL_AURA_TRANSFORM:
            return true;
        default:
            break;
    }
    return Creature::IsImmunedToSpellEffect(spellInfo, index);
}
