/*
 * 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 Affero General Public License as published by the
 * Free Software Foundation; either version 3 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 Affero 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/>.
 */

#ifndef AZEROTHCORE_PET_H
#define AZEROTHCORE_PET_H

#include "PetDefines.h"
#include "TemporarySummon.h"

#define PET_FOCUS_REGEN_INTERVAL    4 * IN_MILLISECONDS
#define PET_LOSE_HAPPINES_INTERVAL  7500
#define HAPPINESS_LEVEL_SIZE        333000

struct PetSpell
{
    ActiveStates active;
    PetSpellState state;
    PetSpellType type;
};

class AsynchPetSummon
{
public:
    AsynchPetSummon(uint32 entry, Position position, PetType petType, uint32 duration, uint32 createdBySpell, ObjectGuid casterGUID) :
        m_entry(entry), pos(position), m_petType(petType),
        m_duration(duration), m_createdBySpell(createdBySpell), m_casterGUID(casterGUID) { }

    uint32 m_entry;
    Position pos;
    PetType m_petType;
    uint32 m_duration, m_createdBySpell;
    ObjectGuid m_casterGUID;
};

typedef std::unordered_map<uint32, PetSpell> PetSpellMap;
typedef std::vector<uint32> AutoSpellList;

class Player;

class Pet : public Guardian
{
public:
    explicit Pet(Player* owner, PetType type = MAX_PET_TYPE);
    ~Pet() override;

    void AddToWorld() override;
    void RemoveFromWorld() override;

    void SetDisplayId(uint32 modelId) override;

    PetType getPetType() const { return m_petType; }
    void setPetType(PetType type) { m_petType = type; }
    bool isControlled() const { return getPetType() == SUMMON_PET || getPetType() == HUNTER_PET; }
    bool isTemporarySummoned() const { return m_duration > 0; }

    bool IsPermanentPetFor(Player* owner) const;              // pet have tab in character windows and set UNIT_FIELD_PETNUMBER

    bool Create(ObjectGuid::LowType guidlow, Map* map, uint32 phaseMask, uint32 Entry, uint32 pet_number);
    bool CreateBaseAtCreature(Creature* creature);
    bool CreateBaseAtCreatureInfo(CreatureTemplate const* cinfo, Unit* owner);
    bool CreateBaseAtTamed(CreatureTemplate const* cinfo, Map* map, uint32 phaseMask);
    static SpellCastResult TryLoadFromDB(Player* owner, bool current = false, PetType mandatoryPetType = MAX_PET_TYPE, bool checkDead = false);
    static bool LoadPetFromDB(Player* owner, uint8 asynchLoadType, uint32 petentry = 0, uint32 petnumber = 0, bool current = false, AsynchPetSummon* info = nullptr);
    bool isBeingLoaded() const override { return m_loading;}
    void SavePetToDB(PetSaveMode mode, bool logout);
    void Remove(PetSaveMode mode, bool returnreagent = false);
    static void DeleteFromDB(ObjectGuid::LowType guidlow);

    void setDeathState(DeathState s, bool despawn = false) override;                   // overwrite virtual Creature::setDeathState and Unit::setDeathState
    void Update(uint32 diff) override;                           // overwrite virtual Creature::Update and Unit::Update

    uint8 GetPetAutoSpellSize() const override { return m_autospells.size(); }
    uint32 GetPetAutoSpellOnPos(uint8 pos) const override
    {
        if (pos >= m_autospells.size())
            return 0;
        else
            return m_autospells[pos];
    }

    void LoseHappiness();
    HappinessState GetHappinessState();
    void GivePetXP(uint32 xp);
    void GivePetLevel(uint8 level);
    void SynchronizeLevelWithOwner();
    bool HaveInDiet(ItemTemplate const* item) const;
    uint32 GetCurrentFoodBenefitLevel(uint32 itemlevel) const;
    void SetDuration(int32 dur) { m_duration = dur; }
    int32 GetDuration() const { return m_duration; }

    /*
    bool UpdateStats(Stats stat);
    bool UpdateAllStats();
    void UpdateResistances(uint32 school);
    void UpdateArmor();
    void UpdateMaxHealth();
    void UpdateMaxPower(Powers power);
    void UpdateAttackPowerAndDamage(bool ranged = false);
    void UpdateDamagePhysical(WeaponAttackType attType);
    */

    void ToggleAutocast(SpellInfo const* spellInfo, bool apply);

    bool HasSpell(uint32 spell) const override;

    void LearnPetPassives();
    void CastPetAuras(bool current);

    void CastWhenWillAvailable(uint32 spellid, Unit* spellTarget, Unit* oldTarget, bool spellIsPositive = false);
    void ClearCastWhenWillAvailable();
    void RemoveSpellCooldown(uint32 spell_id, bool update /* = false */);

    void _SaveSpellCooldowns(CharacterDatabaseTransaction trans, bool logout);
    void _SaveAuras(CharacterDatabaseTransaction trans, bool logout);
    void _SaveSpells(CharacterDatabaseTransaction trans);

    void _LoadSpellCooldowns(PreparedQueryResult result);
    void _LoadAuras(PreparedQueryResult result, uint32 timediff);
    void _LoadSpells(PreparedQueryResult result);

    bool addSpell(uint32 spellId, ActiveStates active = ACT_DECIDE, PetSpellState state = PETSPELL_NEW, PetSpellType type = PETSPELL_NORMAL);
    bool learnSpell(uint32 spell_id);
    void learnSpellHighRank(uint32 spellid);
    void InitLevelupSpellsForLevel();
    bool unlearnSpell(uint32 spell_id, bool learn_prev, bool clear_ab = true);
    bool removeSpell(uint32 spell_id, bool learn_prev, bool clear_ab = true);
    void CleanupActionBar();

    PetSpellMap     m_spells;
    AutoSpellList   m_autospells;

    void InitPetCreateSpells();

    bool resetTalents();
    static void resetTalentsForAllPetsOf(Player* owner, Pet* online_pet = nullptr);
    void InitTalentForLevel();

    uint8 GetMaxTalentPointsForLevel(uint8 level);
    uint8 GetFreeTalentPoints() { return GetByteValue(UNIT_FIELD_BYTES_1, 1); }
    void SetFreeTalentPoints(uint8 points) { SetByteValue(UNIT_FIELD_BYTES_1, UNIT_BYTES_1_OFFSET_PET_TALENTS, points); }

    uint32  m_usedTalentCount;

    uint64 GetAuraUpdateMaskForRaid() const { return m_auraRaidUpdateMask; }
    void SetAuraUpdateMaskForRaid(uint8 slot) { m_auraRaidUpdateMask |= (uint64(1) << slot); }
    void ResetAuraUpdateMaskForRaid() { m_auraRaidUpdateMask = 0; }

    DeclinedName const* GetDeclinedNames() const { return m_declinedname; }

    bool    m_removed;                                  // prevent overwrite pet state in DB at next Pet::Update if pet already removed(saved)

    Player* GetOwner() const { return m_owner; }
    void SetLoading(bool load) { m_loading = load; }
    void HandleAsynchLoadSucceed();
    static void HandleAsynchLoadFailed(AsynchPetSummon* info, Player* player, uint8 asynchLoadType, uint8 loadResult);
    uint8 GetAsynchLoadType() const { return asynchLoadType; }
    void SetAsynchLoadType(uint8 type) { asynchLoadType = type; }
protected:
    Player* m_owner;
    int32   m_happinessTimer;
    PetType m_petType;
    int32   m_duration;                                 // time until unsummon (used mostly for summoned guardians and not used for controlled pets)
    uint64  m_auraRaidUpdateMask;
    bool    m_loading;
    int32   m_petRegenTimer;                            // xinef: used for focus regeneration

    DeclinedName* m_declinedname;

    Unit*   m_tempspellTarget;
    Unit*   m_tempoldTarget;
    bool    m_tempspellIsPositive;
    uint32  m_tempspell;

    uint8 asynchLoadType;

private:
    void SaveToDB(uint32, uint8, uint32) override                // override of Creature::SaveToDB     - must not be called
    {
        ABORT();
    }
    void DeleteFromDB() override                                 // override of Creature::DeleteFromDB - must not be called
    {
        ABORT();
    }
};
#endif
