#pragma once

#include "weakptr.h"
#include "weapon.h"

namespace cs
{
    class MFBuff;
}

struct RemoveBuffCbConext
{
    list_head** next;
    list_head entry;
};

class Human;
class Creature;
class Bullet;
class Effect;
struct EventHandlerPtr;
class Buff
{
 public:
    int buff_uniid = 0;
    Creature* owner = nullptr;
    const mt::Buff* meta = nullptr;
    const mt::Skill* skill_meta = nullptr;
    a8::Attacher xtimer_attacher;
    long long add_frameno = 0;
    list_head effect_entry;
    list_head depend_entry;
    list_head cond_entry;
    list_head on_remove_contexts;
    a8::XTimerWp remover_timer;
    std::shared_ptr<a8::Args> init_args;
    float res_scale = 1;
    long long res_scale_frameno = 0;

    Buff();
    ~Buff();
    void Init();
    void UnInit();
    int GetLeftTime();
    int GetLastingTime();
    bool NeedSync(Human* hum);
    void FillMFBuff(cs::MFBuff* buff_pb);
    bool FreezeOperate();
    CreatureWeakPtr& GetCaster();
    void SetCaster(Creature* caster);

    void CalcPassengerShotOffset();

    void PreProcess();

    virtual void Activate();
    virtual void Deactivate();

protected:
    void ClearEventHandlers();
    void InternalTimerAddBuff();
    void RecoverHoldWeapons();

    void ProcSputteringFunc(Bullet* bullet);

protected:
    int hold_curr_weapon_idx_ = 0;
    std::list<Weapon> hold_weapons_;
    std::list<std::weak_ptr<EventHandlerPtr>> event_handlers_;
    CreatureWeakPtr caster_;
    std::list<std::weak_ptr<Effect>> effect_list_;

    friend class PBUtils;
};