/*	EQEmu: EQEmulator

	Copyright (C) 2001-2026 EQEmu Development Team

	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 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 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/>.
*/
#pragma once

#include "common/emu_constants.h"
#include "common/types.h"

#include <list>

class Client;
class Group;
class Mob;
class Raid;
struct ExtraAttackOptions;

struct struct_HateList {
	Mob    *entity_on_hatelist;
	int64  hatelist_damage;
	int64  stored_hate_amount;
	bool   is_entity_frenzy;
	int8   oor_count; // count on how long we've been out of range
	uint32 last_modified; // we need to remove this if it gets higher than 10 mins
};

enum class HateListCountType {
	Bot    = 0,
	Client = 1,
	NPC    = 2,
	All    = 3,
};

class HateList {
public:
	HateList();
	~HateList();

	Mob *GetClosestEntOnHateList(Mob *hater, bool skip_mezzed = false, EntityFilterType filter_type = EntityFilterType::All);
	Mob *GetDamageTopOnHateList(Mob *hater); // didn't add 'skip_mezzed' due to calls being in ::Death()
	Mob *GetMobWithMostHateOnList(Mob *center, Mob *skip = nullptr, bool skip_mezzed = false, EntityFilterType filter_type = EntityFilterType::All);
	Mob *GetRandomMobOnHateList(EntityFilterType filter_type = EntityFilterType::All);
	Mob *GetMobWithMostHateOnList(bool skip_mezzed = false);
	Mob *GetEscapingMobOnHateList(Mob *center, float range = 0.0f, bool first = false);

	bool IsEntOnHateList(Mob* m);
	bool IsHateListEmpty();
	bool RemoveEntFromHateList(Mob *ent);
	uint32 GetHateListCount(HateListCountType count_type = HateListCountType::All);

	int AreaRampage(Mob *caster, Mob *target, int count, ExtraAttackOptions *opts);
	int GetSummonedPetCountOnHateList();
	int GetHateRatio(Mob *top, Mob *other);

	int64 GetEntHateAmount(Mob *ent, bool in_damage = false);

	std::list<struct_HateList *> &GetHateList() { return list; }

	std::list<struct_HateList *> GetFilteredHateList(
		EntityFilterType filter_type = EntityFilterType::All,
		uint32 distance = 0
	);

	void DamageHateList(
		int64 damage,
		uint32 distance = 0,
		EntityFilterType filter_type = EntityFilterType::All,
		bool is_percentage = false
	);

	void AddEntToHateList(
		Mob *ent,
		int64 in_hate = 0,
		int64 in_damage = 0,
		bool in_is_frenzied = false,
		bool add_to_hate_list_if_not_exist = true
	);
	void DoFactionHits(int64 npc_faction_level_id, int32 faction_id, int32 faction_value);
	void PrintHateListToClient(Client *c);
	void SetHateAmountOnEnt(Mob *other, int64 in_hate, uint64 in_damage);
	void SetHateOwner(Mob *new_hate_owner) { hate_owner = new_hate_owner; }
	void SpellCast(Mob *caster, uint32 spell_id, float range, Mob *ae_center = nullptr);
	void WipeHateList(bool npc_only = false);
	void RemoveStaleEntries(int time_ms, float dist);


protected:
	struct_HateList* Find(Mob* m);
private:
	std::list<struct_HateList *> list;
	Mob                          *hate_owner;
};