/*
 * Copyright (C) 2008-2012 TrinityCore <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, see <http://www.gnu.org/licenses/>.
 */

/*
 * Scripts for spells with SPELLFAMILY_SHAMAN and SPELLFAMILY_GENERIC spells used by shaman players.
 * Ordered alphabetically using scriptname.
 * Scriptnames of files in this file should be prefixed with "spell_sha_".
 */

#include "ScriptPCH.h"
#include "SpellAuraEffects.h"

enum ShamanSpells
{
    SHAMAN_SPELL_GLYPH_OF_MANA_TIDE     = 55441,
    SHAMAN_SPELL_MANA_TIDE_TOTEM        = 39609,
    SHAMAN_SPELL_FIRE_NOVA_R1           = 1535,
    SHAMAN_SPELL_FIRE_NOVA_TRIGGERED_R1 = 8349,
    SHAMAN_SPELL_SATED                  = 57724,
    SHAMAN_SPELL_EXHAUSTION             = 57723,

    //For Earthen Power
    SHAMAN_TOTEM_SPELL_EARTHBIND_TOTEM  = 6474, //Spell casted by totem
    SHAMAN_TOTEM_SPELL_EARTHEN_POWER    = 59566, //Spell witch remove snare effect
};

// 51474 - Astral shift
class spell_sha_astral_shift : public SpellScriptLoader
{
    public:
        spell_sha_astral_shift() : SpellScriptLoader("spell_sha_astral_shift") { }

        class spell_sha_astral_shift_AuraScript : public AuraScript
        {
            PrepareAuraScript(spell_sha_astral_shift_AuraScript);

            uint32 absorbPct;

            bool Load()
            {
                absorbPct = GetSpellInfo()->Effects[EFFECT_0].CalcValue(GetCaster());
                return true;
            }

            void CalculateAmount(AuraEffect const* /*aurEff*/, int32 & amount, bool & /*canBeRecalculated*/)
            {
                // Set absorbtion amount to unlimited
                amount = -1;
            }

            void Absorb(AuraEffect* /*aurEff*/, DamageInfo & dmgInfo, uint32 & absorbAmount)
            {
                // reduces all damage taken while stun, fear or silence
                if (GetTarget()->GetUInt32Value(UNIT_FIELD_FLAGS) & (UNIT_FLAG_FLEEING | UNIT_FLAG_SILENCED) || (GetTarget()->GetUInt32Value(UNIT_FIELD_FLAGS) & (UNIT_FLAG_STUNNED) && GetTarget()->HasAuraWithMechanic(1<<MECHANIC_STUN)))
                    absorbAmount = CalculatePctN(dmgInfo.GetDamage(), absorbPct);
            }

            void Register()
            {
                 DoEffectCalcAmount += AuraEffectCalcAmountFn(spell_sha_astral_shift_AuraScript::CalculateAmount, EFFECT_0, SPELL_AURA_SCHOOL_ABSORB);
                 OnEffectAbsorb += AuraEffectAbsorbFn(spell_sha_astral_shift_AuraScript::Absorb, EFFECT_0);
            }
        };

        AuraScript* GetAuraScript() const
        {
            return new spell_sha_astral_shift_AuraScript();
        }
};

// 1535 Fire Nova
class spell_sha_fire_nova : public SpellScriptLoader
{
    public:
        spell_sha_fire_nova() : SpellScriptLoader("spell_sha_fire_nova") { }

        class spell_sha_fire_nova_SpellScript : public SpellScript
        {
            PrepareSpellScript(spell_sha_fire_nova_SpellScript);

            bool Validate(SpellInfo const* spellEntry)
            {
                if (!sSpellMgr->GetSpellInfo(SHAMAN_SPELL_FIRE_NOVA_R1))
                    return false;
                if (sSpellMgr->GetFirstSpellInChain(SHAMAN_SPELL_FIRE_NOVA_R1) != sSpellMgr->GetFirstSpellInChain(spellEntry->Id))
                    return false;

                uint8 rank = sSpellMgr->GetSpellRank(spellEntry->Id);
                if (!sSpellMgr->GetSpellWithRank(SHAMAN_SPELL_FIRE_NOVA_TRIGGERED_R1, rank, true))
                    return false;
                return true;
            }

            SpellCastResult CheckFireTotem()
            {
                // fire totem
                if (!GetCaster()->m_SummonSlot[1])
                {
                    SetCustomCastResultMessage(SPELL_CUSTOM_ERROR_MUST_HAVE_FIRE_TOTEM);
                    return SPELL_FAILED_CUSTOM_ERROR;
                }

                return SPELL_CAST_OK;
            }

            void HandleDummy(SpellEffIndex /*effIndex*/)
            {
                Unit* caster = GetCaster();
                uint8 rank = sSpellMgr->GetSpellRank(GetSpellInfo()->Id);
                if (uint32 spellId = sSpellMgr->GetSpellWithRank(SHAMAN_SPELL_FIRE_NOVA_TRIGGERED_R1, rank))
                {
                    Creature* totem = caster->GetMap()->GetCreature(caster->m_SummonSlot[1]);
                    if (totem && totem->isTotem())
                        totem->CastSpell(totem, spellId, true);
                }
            }

            void Register()
            {
                OnCheckCast += SpellCheckCastFn(spell_sha_fire_nova_SpellScript::CheckFireTotem);
                OnEffectHitTarget += SpellEffectFn(spell_sha_fire_nova_SpellScript::HandleDummy, EFFECT_0, SPELL_EFFECT_DUMMY);
            }
        };

        SpellScript* GetSpellScript() const
        {
            return new spell_sha_fire_nova_SpellScript();
        }
};

// 39610 Mana Tide Totem
class spell_sha_mana_tide_totem : public SpellScriptLoader
{
    public:
        spell_sha_mana_tide_totem() : SpellScriptLoader("spell_sha_mana_tide_totem") { }

        class spell_sha_mana_tide_totem_SpellScript : public SpellScript
        {
            PrepareSpellScript(spell_sha_mana_tide_totem_SpellScript);

            bool Validate(SpellInfo const* /*spellEntry*/)
            {
                if (!sSpellMgr->GetSpellInfo(SHAMAN_SPELL_GLYPH_OF_MANA_TIDE))
                    return false;
                if (!sSpellMgr->GetSpellInfo(SHAMAN_SPELL_MANA_TIDE_TOTEM))
                    return false;
                return true;
            }

            void HandleDummy(SpellEffIndex /*effIndex*/)
            {
                Unit* caster = GetCaster();
                if (Unit* unitTarget = GetHitUnit())
                {
                    if (unitTarget->getPowerType() == POWER_MANA)
                    {
                        int32 effValue = GetEffectValue();
                        // Glyph of Mana Tide
                        if (Unit* owner = caster->GetOwner())
                            if (AuraEffect* dummy = owner->GetAuraEffect(SHAMAN_SPELL_GLYPH_OF_MANA_TIDE, 0))
                                effValue += dummy->GetAmount();
                        // Regenerate 6% of Total Mana Every 3 secs
                        int32 effBasePoints0 = int32(CalculatePctN(unitTarget->GetMaxPower(POWER_MANA), effValue));
                        caster->CastCustomSpell(unitTarget, SHAMAN_SPELL_MANA_TIDE_TOTEM, &effBasePoints0, NULL, NULL, true, NULL, NULL, GetOriginalCaster()->GetGUID());
                    }
                }
            }

            void Register()
            {
                OnEffectHitTarget += SpellEffectFn(spell_sha_mana_tide_totem_SpellScript::HandleDummy, EFFECT_0, SPELL_EFFECT_DUMMY);
            }
        };

        SpellScript* GetSpellScript() const
        {
            return new spell_sha_mana_tide_totem_SpellScript();
        }
};

// 6474 - Earthbind Totem - Fix Talent:Earthen Power
class spell_sha_earthbind_totem : public SpellScriptLoader
{
    public:
        spell_sha_earthbind_totem() : SpellScriptLoader("spell_sha_earthbind_totem") { }

        class spell_sha_earthbind_totem_AuraScript : public AuraScript
        {
            PrepareAuraScript(spell_sha_earthbind_totem_AuraScript);

            bool Validate(SpellInfo const* /*spellEntry*/)
            {
                if (!sSpellMgr->GetSpellInfo(SHAMAN_TOTEM_SPELL_EARTHBIND_TOTEM))
                    return false;
                if (!sSpellMgr->GetSpellInfo(SHAMAN_TOTEM_SPELL_EARTHEN_POWER))
                    return false;
                return true;
            }

            void HandleEffectPeriodic(AuraEffect const* aurEff)
            {
                Unit* target = GetTarget();
                if (Unit* caster = aurEff->GetBase()->GetCaster())
                    if (AuraEffect* aur = caster->GetDummyAuraEffect(SPELLFAMILY_SHAMAN, 2289, 0))
                        if (roll_chance_i(aur->GetBaseAmount()))
                            target->CastSpell(target, SHAMAN_TOTEM_SPELL_EARTHEN_POWER, true, NULL, aurEff);
            }

            void Register()
            {
                 OnEffectPeriodic += AuraEffectPeriodicFn(spell_sha_earthbind_totem_AuraScript::HandleEffectPeriodic, EFFECT_0, SPELL_AURA_PERIODIC_TRIGGER_SPELL);
            }
        };

        AuraScript* GetAuraScript() const
        {
            return new spell_sha_earthbind_totem_AuraScript();
        }
};

class spell_sha_bloodlust : public SpellScriptLoader
{
    public:
        spell_sha_bloodlust() : SpellScriptLoader("spell_sha_bloodlust") { }

        class spell_sha_bloodlust_SpellScript : public SpellScript
        {
            PrepareSpellScript(spell_sha_bloodlust_SpellScript);

            bool Validate(SpellInfo const* /*spellEntry*/)
            {
                if (!sSpellMgr->GetSpellInfo(SHAMAN_SPELL_SATED))
                    return false;
                return true;
            }

            void RemoveInvalidTargets(std::list<Unit*>& targets)
            {
                targets.remove_if (Trinity::UnitAuraCheck(true, SHAMAN_SPELL_SATED));
            }

            void ApplyDebuff()
            {
                GetHitUnit()->CastSpell(GetHitUnit(), SHAMAN_SPELL_SATED, true);
            }

            void Register()
            {
                OnUnitTargetSelect += SpellUnitTargetFn(spell_sha_bloodlust_SpellScript::RemoveInvalidTargets, EFFECT_0, TARGET_UNIT_CASTER_AREA_RAID);
                OnUnitTargetSelect += SpellUnitTargetFn(spell_sha_bloodlust_SpellScript::RemoveInvalidTargets, EFFECT_1, TARGET_UNIT_CASTER_AREA_RAID);
                OnUnitTargetSelect += SpellUnitTargetFn(spell_sha_bloodlust_SpellScript::RemoveInvalidTargets, EFFECT_2, TARGET_UNIT_CASTER_AREA_RAID);
                AfterHit += SpellHitFn(spell_sha_bloodlust_SpellScript::ApplyDebuff);
            }
        };

        SpellScript* GetSpellScript() const
        {
            return new spell_sha_bloodlust_SpellScript();
        }
};

class spell_sha_heroism : public SpellScriptLoader
{
    public:
        spell_sha_heroism() : SpellScriptLoader("spell_sha_heroism") { }

        class spell_sha_heroism_SpellScript : public SpellScript
        {
            PrepareSpellScript(spell_sha_heroism_SpellScript);

            bool Validate(SpellInfo const* /*spellEntry*/)
            {
                if (!sSpellMgr->GetSpellInfo(SHAMAN_SPELL_EXHAUSTION))
                    return false;
                return true;
            }

            void RemoveInvalidTargets(std::list<Unit*>& targets)
            {
                targets.remove_if (Trinity::UnitAuraCheck(true, SHAMAN_SPELL_EXHAUSTION));
            }

            void ApplyDebuff()
            {
                GetHitUnit()->CastSpell(GetHitUnit(), SHAMAN_SPELL_EXHAUSTION, true);
            }

            void Register()
            {
                OnUnitTargetSelect += SpellUnitTargetFn(spell_sha_heroism_SpellScript::RemoveInvalidTargets, EFFECT_0, TARGET_UNIT_CASTER_AREA_RAID);
                OnUnitTargetSelect += SpellUnitTargetFn(spell_sha_heroism_SpellScript::RemoveInvalidTargets, EFFECT_1, TARGET_UNIT_CASTER_AREA_RAID);
                OnUnitTargetSelect += SpellUnitTargetFn(spell_sha_heroism_SpellScript::RemoveInvalidTargets, EFFECT_2, TARGET_UNIT_CASTER_AREA_RAID);
                AfterHit += SpellHitFn(spell_sha_heroism_SpellScript::ApplyDebuff);
            }
        };

        SpellScript* GetSpellScript() const
        {
            return new spell_sha_heroism_SpellScript();
        }
};

void AddSC_shaman_spell_scripts()
{
    new spell_sha_astral_shift();
    new spell_sha_fire_nova();
    new spell_sha_mana_tide_totem();
    new spell_sha_earthbind_totem();
    new spell_sha_bloodlust();
    new spell_sha_heroism();
}
