#include "addresses.h"

#include "UObjectGlobals.h"
#include "World.h"
#include "NetDriver.h"
#include "GameSession.h"

#include "NetSerialization.h"

#include "Array.h"
#include "AbilitySystemComponent.h"

#include "finder.h"
#include <regex>

#include "BuildingActor.h"

void Addresses::SetupVersion()
{
	if (false)
	{
		Engine_Version = 423;
		Fortnite_Version = 10.40;
	}

	if (false)
	{
		Engine_Version = 424;
		Fortnite_Version = 11.01;
	}

	if (false)
	{
		Engine_Version = 425;
		Fortnite_Version = 12.41;
	}

	static FString(*GetEngineVersion)() = decltype(GetEngineVersion)(Memcury::Scanner::FindPattern("40 53 48 83 EC 20 48 8B D9 E8 ? ? ? ? 48 8B C8 41 B8 04 ? ? ? 48 8B D3", false).Get());

	std::string FullVersion;
	FString toFree;

	if (!GetEngineVersion)
	{
		auto VerStr = Memcury::Scanner::FindPattern("2B 2B 46 6F 72 74 6E 69 74 65 2B 52 65 6C 65 61 73 65 2D ? ? ? ?").Get();

		// if (!VerStr)

		FullVersion = decltype(FullVersion.c_str())(VerStr);
		Engine_Version = 500;
	}

	else
	{
		toFree = GetEngineVersion();
		FullVersion = toFree.ToString();
	}

	std::string FNVer = FullVersion;
	std::string EngineVer = FullVersion;
	std::string CLStr;
	int CL = 0;

	if (!FullVersion.contains("Live") && !FullVersion.contains(("Next")) && !FullVersion.contains(("Cert")))
	{
		if (GetEngineVersion)
		{
			FNVer.erase(0, FNVer.find_last_of(("-"), FNVer.length() - 1) + 1);
			EngineVer.erase(EngineVer.find_first_of(("-"), FNVer.length() - 1), 40);

			if (EngineVer.find_first_of(".") != EngineVer.find_last_of(".")) // this is for 4.21.0 and itll remove the .0
				EngineVer.erase(EngineVer.find_last_of((".")), 2);

			Engine_Version = std::stod(EngineVer) * 100;
		}

		else
		{
			const std::regex base_regex(("-([0-9.]*)-"));
			std::cmatch base_match;

			std::regex_search(FullVersion.c_str(), base_match, base_regex);

			FNVer = base_match[1];
		}

		Fortnite_Version = std::stod(FNVer);

		if (Fortnite_Version >= 16.00 && Fortnite_Version <= 18.40)
			Engine_Version = 427; // 4.26.1;
	}

	else
	{
		// TODO
		// Engine_Version = FullVersion.contains(("Next")) ? 419 : 416;
		CLStr = FullVersion.substr(FullVersion.find_first_of('-') + 1);
		CLStr = CLStr.substr(0, CLStr.find_first_of('+'));
		CL = std::stoi(CLStr);
		Engine_Version = CL <= 3775276 ? 416 : 419; // std::stoi(FullVersion.substr(0, FullVersion.find_first_of('-')));
		Fortnite_Version = FullVersion.contains(("Next")) ? 2.4 : 1.8;
	}

	// Fortnite_Season = std::floor(Fortnite_Version);

	FFastArraySerializer::bNewSerializer = Fortnite_Version >= 8.30;
}

void Addresses::FindAll()
{
	LOG_INFO(LogDev, "9241");
	Addresses::ProcessEvent = FindProcessEvent();
	LOG_INFO(LogDev, "151");

	Addresses::StaticFindObject = FindStaticFindObject();
	LOG_INFO(LogDev, "2151");

	Addresses::GetPlayerViewpoint = FindGetPlayerViewpoint();
	LOG_INFO(LogDev, "1246");

	Addresses::CreateNetDriver = FindCreateNetDriver();
	LOG_INFO(LogDev, "2561");

	Addresses::InitHost = FindInitHost();
	LOG_INFO(LogDev, "1341");

	Addresses::PauseBeaconRequests = FindPauseBeaconRequests();
	LOG_INFO(LogDev, "1351");

	Addresses::SpawnActor = FindSpawnActor();
	LOG_INFO(LogDev, "1`231");

	Addresses::InitListen = FindInitListen();
	LOG_INFO(LogDev, "52175");

	Addresses::SetWorld = FindSetWorld();
	LOG_INFO(LogDev, "5432");

	Addresses::KickPlayer = FindKickPlayer();
	LOG_INFO(LogDev, "123");

	Addresses::TickFlush = FindTickFlush();
	LOG_INFO(LogDev, "1123");

	Addresses::GetNetMode = FindGetNetMode();
	LOG_INFO(LogDev, "113");

	Addresses::Realloc = FindRealloc();
	LOG_INFO(LogDev, "1231");

	Addresses::CollectGarbage = FindCollectGarbage();
	LOG_INFO(LogDev, "1123");

	Addresses::NoMCP = FindNoMCP();
	LOG_INFO(LogDev, "131");

	Addresses::PickTeam = FindPickTeam();
	LOG_INFO(LogDev, "132");

	Addresses::InternalTryActivateAbility = FindInternalTryActivateAbility();
	LOG_INFO(LogDev, "17");

	Addresses::GiveAbility = FindGiveAbility();
	LOG_INFO(LogDev, "156");

	Addresses::CantBuild = FindCantBuild();
	LOG_INFO(LogDev, "16");

	Addresses::ReplaceBuildingActor = FindReplaceBuildingActor();
	LOG_INFO(LogDev, "15");

	Addresses::GiveAbilityAndActivateOnce = FindGiveAbilityAndActivateOnce();
	LOG_INFO(LogDev, "14");

	Addresses::OnDamageServer = FindOnDamageServer();
	LOG_INFO(LogDev, "13");

	Addresses::StaticLoadObject = FindStaticLoadObject();
	LOG_INFO(LogDev, "12");

	Addresses::ActorGetNetMode = FindActorGetNetMode();
	LOG_INFO(LogDev, "11");

	Addresses::ChangeGameSessionId = FindChangeGameSessionId();
	LOG_INFO(LogDev, "10");

}

void Addresses::Print()
{
	auto Base = __int64(GetModuleHandleW(0));

	LOG_INFO(LogDev, "Base: 0x{:x}", Base);
	LOG_INFO(LogDev, "ProcessEvent: 0x{:x}", ProcessEvent - Base);
	LOG_INFO(LogDev, "StaticFindObject: 0x{:x}", StaticFindObject - Base);
	LOG_INFO(LogDev, "GetPlayerViewpoint: 0x{:x}", GetPlayerViewpoint - Base);
	LOG_INFO(LogDev, "CreateNetDriver: 0x{:x}", CreateNetDriver - Base);
	LOG_INFO(LogDev, "InitHost: 0x{:x}", InitHost - Base);
	LOG_INFO(LogDev, "PauseBeaconRequests: 0x{:x}", PauseBeaconRequests - Base);
	LOG_INFO(LogDev, "SpawnActor: 0x{:x}", SpawnActor - Base);
	LOG_INFO(LogDev, "InitListen: 0x{:x}", InitListen - Base);
	LOG_INFO(LogDev, "SetWorld: 0x{:x}", SetWorld - Base);
	LOG_INFO(LogDev, "KickPlayer: 0x{:x}", KickPlayer - Base);
	LOG_INFO(LogDev, "TickFlush: 0x{:x}", TickFlush - Base);
	LOG_INFO(LogDev, "GetNetMode: 0x{:x}", GetNetMode - Base);
	LOG_INFO(LogDev, "Realloc: 0x{:x}", Realloc - Base);
	LOG_INFO(LogDev, "CollectGarbage: 0x{:x}", CollectGarbage - Base);
	LOG_INFO(LogDev, "NoMCP: 0x{:x}", NoMCP - Base);
	LOG_INFO(LogDev, "PickTeam: 0x{:x}", PickTeam - Base);
	LOG_INFO(LogDev, "InternalTryActivateAbility: 0x{:x}", InternalTryActivateAbility - Base);
	LOG_INFO(LogDev, "GiveAbility: 0x{:x}", GiveAbility - Base);
	LOG_INFO(LogDev, "CantBuild: 0x{:x}", CantBuild - Base);
	LOG_INFO(LogDev, "ReplaceBuildingActor: 0x{:x}", ReplaceBuildingActor - Base);
	LOG_INFO(LogDev, "GiveAbilityAndActivateOnce: 0x{:x}", GiveAbilityAndActivateOnce - Base);
	LOG_INFO(LogDev, "OnDamageServer: 0x{:x}", OnDamageServer - Base);
	LOG_INFO(LogDev, "StaticLoadObject: 0x{:x}", StaticLoadObject - Base);
	LOG_INFO(LogDev, "ActorGetNetMode: 0x{:x}", ActorGetNetMode - Base);
	LOG_INFO(LogDev, "ChangeGameSessionId: 0x{:x}", ChangeGameSessionId - Base);
}

void Offsets::FindAll()
{
	Offsets::Offset_Internal = Engine_Version >= 425 && std::floor(Fortnite_Version) < 20 ? 0x4C : 0x44;
	Offsets::SuperStruct = Engine_Version >= 422 ? 0x40 : 0x30;
	Offsets::Children = Engine_Version >= 425 ? 0x50 : Offsets::SuperStruct + 8;
	Offsets::PropertiesSize = Offsets::Children + 8;

	if (Engine_Version == 420 || Engine_Version == 421)
		Offsets::Func = 0xB0;
	else if (Engine_Version >= 422 && Engine_Version <= 424)
		Offsets::Func = 0xC0;
	else if (Engine_Version == 425)
		Offsets::Func = 0xF0;
	else if (Engine_Version >= 426)
		Offsets::Func = 0xD8;

	if (Engine_Version == 420)
		Offsets::ServerReplicateActors = 0x53;
	else if (Engine_Version == 421)
		Offsets::ServerReplicateActors = std::floor(Fortnite_Version) == 5 ? 0x54 : 0x56;
	else if (Engine_Version >= 422 && Engine_Version <= 424)
		Offsets::ServerReplicateActors = Fortnite_Version >= 7.40 && Fortnite_Version < 8.40 ? 0x57 :
		Engine_Version == 424 ? (Fortnite_Version >= 11.00 && Fortnite_Version <= 11.01 ? 0x57 :
			(Fortnite_Version == 11.30 || Fortnite_Version == 11.31 ? 0x59 : 0x5A)) : 0x56;

	// ^ I know this makes no sense, 7.40-8.40 is 0x57, other 7-10 is 0x56, 11.00-11.01 = 0x57, 11.31 = 0x59, other S11 is 0x5A

	else if (std::floor(Fortnite_Version) == 12 || std::floor(Fortnite_Version) == 13)
		Offsets::ServerReplicateActors = 0x5D;
	else if (std::floor(Fortnite_Version) == 14 || Fortnite_Version <= 15.2) // never tested 15.2
		Offsets::ServerReplicateActors = 0x5E;
	else if (Fortnite_Version >= 15.3 && Engine_Version < 500) // 15.3-18 = 0x5F
		Offsets::ServerReplicateActors = 0x5F;
	else if (std::floor(Fortnite_Version) >= 19 && std::floor(Fortnite_Version) <= 20)
		Offsets::ServerReplicateActors = 0x66;
	else if (std::floor(Fortnite_Version) >= 21)
		Offsets::ServerReplicateActors = 0x67; // checked onb 22.30
}

void Offsets::Print()
{
	LOG_INFO(LogDev, "Offset_Internal: 0x{:x}", Offset_Internal);
	LOG_INFO(LogDev, "SuperStruct: 0x{:x}", SuperStruct);
	LOG_INFO(LogDev, "Children: 0x{:x}", Children);
	LOG_INFO(LogDev, "PropertiesSize: 0x{:x}", PropertiesSize);
	LOG_INFO(LogDev, "Func: 0x{:x}", Func);
}

void Addresses::Init()
{
	UObject::ProcessEventOriginal = decltype(UObject::ProcessEventOriginal)(ProcessEvent);
	StaticFindObjectOriginal = decltype(StaticFindObjectOriginal)(StaticFindObject);
	UWorld::SpawnActorOriginal = decltype(UWorld::SpawnActorOriginal)(SpawnActor);
	UNetDriver::InitListenOriginal = decltype(UNetDriver::InitListenOriginal)(InitListen);
	AGameSession::KickPlayerOriginal = decltype(AGameSession::KickPlayerOriginal)(KickPlayer);
	UNetDriver::TickFlushOriginal = decltype(UNetDriver::TickFlushOriginal)(TickFlush);
	FMemory::Realloc = decltype(FMemory::Realloc)(Realloc);
	UAbilitySystemComponent::GiveAbilityOriginal = decltype(UAbilitySystemComponent::GiveAbilityOriginal)(GiveAbility);
	UAbilitySystemComponent::InternalTryActivateAbilityOriginal = decltype(UAbilitySystemComponent::InternalTryActivateAbilityOriginal)(InternalTryActivateAbility);
	ABuildingActor::OnDamageServerOriginal = decltype(ABuildingActor::OnDamageServerOriginal)(OnDamageServer);
	StaticLoadObjectOriginal = decltype(StaticLoadObjectOriginal)(StaticLoadObject);

	static auto DefaultNetDriver = FindObject("/Script/Engine.Default__NetDriver");
	Addresses::SetWorld = Engine_Version < 426 ? Addresses::SetWorld : __int64(DefaultNetDriver->VFTable[Addresses::SetWorld]);
	UNetDriver::SetWorldOriginal = decltype(UNetDriver::SetWorldOriginal)(SetWorld);

	// if (Engine_Version >= 421) ChunkedObjects = decltype(ChunkedObjects)(ObjectArray);
	// else UnchunkedObjects = decltype(UnchunkedObjects)(ObjectArray);
}

std::vector<uint64> Addresses::GetFunctionsToNull()
{
	std::vector<uint64> toNull;

	if (Engine_Version == 420)
	{
		toNull.push_back(Memcury::Scanner::FindPattern("48 8B C4 57 48 81 EC ? ? ? ? 4C 8B 82 ? ? ? ? 48 8B F9 0F 29 70 E8 0F 29 78 D8").Get()); // Pawn Overlap
	}

	if (Engine_Version == 421)
	{
		toNull.push_back(Memcury::Scanner::FindPattern("48 8B C4 48 89 58 08 48 89 70 10 57 48 81 EC ? ? ? ? 48 8B BA ? ? ? ? 48 8B DA 0F 29").Get()); // Pawn Overlap
	}

	if (Engine_Version == 422)
	{
		// toNull.push_back(Memcury::Scanner::FindPattern("40 55 56 41 54 48 8B EC 48 81 EC ? ? ? ? 48 8B 01 4C 8B E2 48 8B F1 FF 90").Get()); // chnaging cameasesion
	}

	if (Engine_Version == 425)
	{
		toNull.push_back(Memcury::Scanner::FindPattern("40 57 41 56 48 81 EC ? ? ? ? 80 3D ? ? ? ? ? 0F B6 FA 44 8B F1 74 3A 80 3D ? ? ? ? ? 0F 82").Get()); // collect garbage
		// toNull.push_back(Memcury::Scanner::FindPattern("48 8B C4 55 48 8D 68 A1 48 81 EC ? ? ? ? 48 89 58 08 4C 89 60 F0 45 0F B6 E0 4C").Get()); // Changing Gamesession
		// toNull.push_back(Memcury::Scanner::FindPattern("48 8B C4 55 48 8D 68 A1 48 81 EC ? ? ? ? 48 89 58 08 4C 89 60 F0 4C 8B E2 4C 89").Get()); // ^
	}

	if (Engine_Version == 500)
	{
		toNull.push_back(Memcury::Scanner::FindPattern("48 89 5C 24 ? 48 89 74 24 ? 57 48 83 EC 40 48 8B FA 48 8B D9 48 85 D2 0F 84 ? ? ? ? 8B").Get()); // idk lmfao
	}

	if (Fortnite_Version == 12.61)
	{
		// toNull.push_back(Memcury::Scanner::FindPattern("48 89 4C 24 ? 55 56 57 41 56 48 81 EC ? ? ? ? 4C 8B B1 ? ? ? ? 33 F6 4C 89 B4 24 ? ? ? ? 48 8B").Get()); // fritter crash
	}

	if (Fortnite_Version == 17.30)
	{
		toNull.push_back(Memcury::Scanner::FindPattern("48 8B C4 48 89 70 08 48 89 78 10 55 41 54 41 55 41 56 41 57 48 8D 68 A1 48 81 EC ? ? ? ? 45 33 ED").Get());
	}

	toNull.push_back(Addresses::ChangeGameSessionId);

	return toNull;
}