/*
 * This file is part of the TrinityCore 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 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/>.
 */

#ifndef TRINITY_SMARTSCRIPT_H
#define TRINITY_SMARTSCRIPT_H

#include "Define.h"
#include "SmartScriptMgr.h"

class Creature;
class GameObject;
class Player;
class SpellInfo;
class Unit;
class WorldObject;
struct AreaTriggerEntry;
struct SceneTemplate;

class TC_GAME_API SmartScript
{
    public:
        SmartScript();
        ~SmartScript();

        void OnInitialize(WorldObject* obj, AreaTriggerEntry const* at = nullptr, SceneTemplate const* scene = nullptr);
        void GetScript();
        void FillScript(SmartAIEventList e, WorldObject* obj, AreaTriggerEntry const* at, SceneTemplate const* scene);

        void ProcessEventsFor(SMART_EVENT e, Unit* unit = nullptr, uint32 var0 = 0, uint32 var1 = 0, bool bvar = false, const SpellInfo* spell = nullptr, GameObject* gob = nullptr, std::string const& varString = "");
        void ProcessEvent(SmartScriptHolder& e, Unit* unit = nullptr, uint32 var0 = 0, uint32 var1 = 0, bool bvar = false, const SpellInfo* spell = nullptr, GameObject* gob = nullptr, std::string const& varString = "");
        bool CheckTimer(SmartScriptHolder const& e) const;
        static void RecalcTimer(SmartScriptHolder& e, uint32 min, uint32 max);
        void UpdateTimer(SmartScriptHolder& e, uint32 const diff);
        static void InitTimer(SmartScriptHolder& e);
        void ProcessAction(SmartScriptHolder& e, Unit* unit = nullptr, uint32 var0 = 0, uint32 var1 = 0, bool bvar = false, const SpellInfo* spell = nullptr, GameObject* gob = nullptr, std::string const& varString = "");
        void ProcessTimedAction(SmartScriptHolder& e, uint32 const& min, uint32 const& max, Unit* unit = nullptr, uint32 var0 = 0, uint32 var1 = 0, bool bvar = false, const SpellInfo* spell = nullptr, GameObject* gob = nullptr, std::string const& varString = "");
        void GetTargets(ObjectVector& targets, SmartScriptHolder const& e, Unit* invoker = nullptr) const;
        void GetWorldObjectsInDist(ObjectVector& objects, float dist) const;
        void InstallTemplate(SmartScriptHolder const& e);
        static SmartScriptHolder CreateSmartEvent(SMART_EVENT e, uint32 event_flags, uint32 event_param1, uint32 event_param2, uint32 event_param3, uint32 event_param4, uint32 event_param5, SMART_ACTION action, uint32 action_param1, uint32 action_param2, uint32 action_param3, uint32 action_param4, uint32 action_param5, uint32 action_param6, SMARTAI_TARGETS t, uint32 target_param1, uint32 target_param2, uint32 target_param3, uint32 phaseMask = 0);
        void AddEvent(SMART_EVENT e, uint32 event_flags, uint32 event_param1, uint32 event_param2, uint32 event_param3, uint32 event_param4, uint32 event_param5, SMART_ACTION action, uint32 action_param1, uint32 action_param2, uint32 action_param3, uint32 action_param4, uint32 action_param5, uint32 action_param6, SMARTAI_TARGETS t, uint32 target_param1, uint32 target_param2, uint32 target_param3, uint32 phaseMask = 0);
        void SetPathId(uint32 id) { mPathId = id; }
        uint32 GetPathId() const { return mPathId; }

        WorldObject* GetBaseObject() const;
        WorldObject* GetBaseObjectOrUnit(Unit* unit);
        static bool IsUnit(WorldObject* obj);
        static bool IsPlayer(WorldObject* obj);
        static bool IsCreature(WorldObject* obj);
        static bool IsCharmedCreature(WorldObject* obj);
        static bool IsGameObject(WorldObject* obj);

        void OnUpdate(const uint32 diff);
        void OnMoveInLineOfSight(Unit* who);

        Unit* DoSelectLowestHpFriendly(float range, uint32 MinHPDiff) const;
        void DoFindFriendlyCC(std::vector<Creature*>& creatures, float range) const;
        void DoFindFriendlyMissingBuff(std::vector<Creature*>& creatures, float range, uint32 spellid) const;
        Unit* DoFindClosestFriendlyInRange(float range, bool playerOnly) const;

        bool IsSmart(Creature* c = NULL);
        bool IsSmartGO(GameObject* g = NULL);

        void StoreTargetList(ObjectVector const& targets, uint32 id)
        {
            // insert or replace
            _storedTargets.erase(id);
            _storedTargets.emplace(id, ObjectGuidVector(targets));
        }

        ObjectVector const* GetStoredTargetVector(uint32 id, WorldObject const& ref) const
        {
            auto itr = _storedTargets.find(id);
            if (itr != _storedTargets.end())
                return itr->second.GetObjectVector(ref);
            return nullptr;
        }

        void StoreCounter(uint32 id, uint32 value, uint32 reset);
        uint32 GetCounterValue(uint32 id) const;

        GameObject* FindGameObjectNear(WorldObject* searchObject, ObjectGuid::LowType guid) const;
        Creature* FindCreatureNear(WorldObject* searchObject, ObjectGuid::LowType guid) const;

        void OnReset();
        void ResetBaseObject();

        //TIMED_ACTIONLIST (script type 9 aka script9)
        void SetScript9(SmartScriptHolder& e, uint32 entry);
        Unit* GetLastInvoker(Unit* invoker = nullptr) const;
        ObjectGuid mLastInvoker;
        typedef std::unordered_map<uint32, uint32> CounterMap;
        CounterMap mCounterList;

    private:
        void IncPhase(uint32 p);
        void DecPhase(uint32 p)
        {
            if (p >= mEventPhase)
                mEventPhase = 0;
            else
                mEventPhase -= p;
        }

        bool IsInPhase(uint32 p) const
        {
            if (mEventPhase == 0)
                return false;
            return ((1 << (mEventPhase - 1)) & p) != 0;
        }

        void SetPhase(uint32 p = 0) { mEventPhase = p; }

        SmartAIEventList mEvents;
        SmartAIEventList mInstallEvents;
        SmartAIEventList mTimedActionList;
        bool isProcessingTimedActionList;
        Creature* me;
        ObjectGuid meOrigGUID;
        GameObject* go;
        ObjectGuid goOrigGUID;
        AreaTriggerEntry const* trigger;
        SceneTemplate const* sceneTemplate;
        SmartScriptType mScriptType;
        uint32 mEventPhase;

        uint32 mPathId;
        SmartAIEventStoredList mStoredEvents;
        std::vector<uint32> mRemIDs;

        uint32 mTextTimer;
        uint32 mLastTextID;
        uint32 mTalkerEntry;
        bool mUseTextTimer;

        ObjectVectorMap _storedTargets;

        SMARTAI_TEMPLATE mTemplate;
        void InstallEvents();

        void RemoveStoredEvent(uint32 id);
};

#endif