/*
 * 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 _UNITEVENTS
#define _UNITEVENTS

#include "Common.h"

class ThreatContainer;
class ThreatMgr;
class HostileReference;

//==============================================================
//==============================================================

enum UNIT_EVENT_TYPE
{
    // Player/Pet changed on/offline status
    UEV_THREAT_REF_ONLINE_STATUS        = 1 << 0,

    // Threat for Player/Pet changed
    UEV_THREAT_REF_THREAT_CHANGE        = 1 << 1,

    // Player/Pet will be removed from list (dead) [for internal use]
    UEV_THREAT_REF_REMOVE_FROM_LIST     = 1 << 2,

    // Player/Pet entered/left  water or some other place where it is/was not accessible for the creature
    UEV_THREAT_REF_ASSECCIBLE_STATUS    = 1 << 3,

    // Threat list is going to be sorted (if dirty flag is set)
    UEV_THREAT_SORT_LIST                = 1 << 4,

    // New target should be fetched, could tbe the current target as well
    UEV_THREAT_SET_NEXT_TARGET          = 1 << 5,

    // A new victim (target) was set. Could be nullptr
    UEV_THREAT_VICTIM_CHANGED           = 1 << 6,

    // Future use
    //UEV_UNIT_KILLED                   = 1<<7,

    //Future use
    //UEV_UNIT_HEALTH_CHANGE            = 1<<8,
};

#define UEV_THREAT_REF_EVENT_MASK (UEV_THREAT_REF_ONLINE_STATUS | UEV_THREAT_REF_THREAT_CHANGE | UEV_THREAT_REF_REMOVE_FROM_LIST | UEV_THREAT_REF_ASSECCIBLE_STATUS)
#define UEV_THREAT_MANAGER_EVENT_MASK (UEV_THREAT_SORT_LIST | UEV_THREAT_SET_NEXT_TARGET | UEV_THREAT_VICTIM_CHANGED)
#define UEV_ALL_EVENT_MASK (0xffffffff)

// Future use
//#define UEV_UNIT_EVENT_MASK (UEV_UNIT_KILLED | UEV_UNIT_HEALTH_CHANGE)

//==============================================================

class UnitBaseEvent
{
private:
    uint32 iType;
public:
    UnitBaseEvent(uint32 pType) { iType = pType; }
    [[nodiscard]] uint32 getType() const { return iType; }
    [[nodiscard]] bool matchesTypeMask(uint32 pMask) const { return iType & pMask; }

    void setType(uint32 pType) { iType = pType; }
};

//==============================================================

class ThreatRefStatusChangeEvent : public UnitBaseEvent
{
private:
    HostileReference* iHostileReference;
    union
    {
        float iFValue;
        int32 iIValue;
        bool iBValue;
    };
    ThreatMgr* iThreatMgr;
public:
    ThreatRefStatusChangeEvent(uint32 pType) : UnitBaseEvent(pType), iThreatMgr(nullptr) { iHostileReference = nullptr; }

    ThreatRefStatusChangeEvent(uint32 pType, HostileReference* pHostileReference) : UnitBaseEvent(pType), iThreatMgr(nullptr) { iHostileReference = pHostileReference; }

    ThreatRefStatusChangeEvent(uint32 pType, HostileReference* pHostileReference, float pValue) : UnitBaseEvent(pType), iThreatMgr(nullptr) { iHostileReference = pHostileReference; iFValue = pValue; }

    ThreatRefStatusChangeEvent(uint32 pType, HostileReference* pHostileReference, bool pValue) : UnitBaseEvent(pType), iThreatMgr(nullptr) { iHostileReference = pHostileReference; iBValue = pValue; }

    [[nodiscard]] int32 getIValue() const { return iIValue; }

    [[nodiscard]] float getFValue() const { return iFValue; }

    [[nodiscard]] bool getBValue() const { return iBValue; }

    void setBValue(bool pValue) { iBValue = pValue; }

    [[nodiscard]] HostileReference* getReference() const { return iHostileReference; }

    void setThreatMgr(ThreatMgr* pThreatMgr) { iThreatMgr = pThreatMgr; }

    [[nodiscard]] ThreatMgr* getThreatMgr() const { return iThreatMgr; }
};

//==============================================================

class ThreatMgrEvent : public ThreatRefStatusChangeEvent
{
private:
    ThreatContainer* iThreatContainer;
public:
    ThreatMgrEvent(uint32 pType) : ThreatRefStatusChangeEvent(pType), iThreatContainer(nullptr) {}
    ThreatMgrEvent(uint32 pType, HostileReference* pHostileReference) : ThreatRefStatusChangeEvent(pType, pHostileReference), iThreatContainer(nullptr) {}

    void setThreatContainer(ThreatContainer* pThreatContainer) { iThreatContainer = pThreatContainer; }

    [[nodiscard]] ThreatContainer* getThreatContainer() const { return iThreatContainer; }
};

//==============================================================
#endif
