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#include "cppGI.h"
#include "Kismet/GameplayStatics.h"
#include "Misc/paths.h"
#include "Engine/levelstreamingdynamic.h"
#include "cppFuncLibrary.h"

/*for working tarray::Contains*/

bool operator==(const Fcppcoords& c1, const Fcppcoords& c2) {
	return c1.flat == c2.flat &&
		c1.floor == c2.floor &&
		c1.house == c2.house &&
		c1.section == c2.section &&
		c1.type == c2.type &&
		c1.zone == c2.zone;
}
/*for working tarray::Contains*/
bool operator==(const FcppLevelStruct& c1, const FcppLevelStruct& c2) {
	return c1.anotherLvl == c2.anotherLvl &&
		c1.coords == c2.coords &&
		c1.dontUnload == c2.dontUnload &&
		c1.path == c2.path &&
		c1.uniqName == c2.uniqName &&
		c1.Z == c2.Z;
}

TArray<ULevelStreaming*> UcppGI::cppLvlManage(UObject* WorldContextObject, Fcppcoords currentCoords, uint8 currentState)
{
	TArray<ULevelStreaming*> outStruct;
	bool loadthis;
	/*for 3Dtour only*/
	if(currentState==11) {
		auto temp = Fcppcoords();
		temp.house = -2;
		temp.section = -2;
		temp.floor = 1;

		cppLoadList.AddUnique(temp);
	}
	cppLoadList.AddUnique(currentCoords);

	for (const auto& lvl : cppLevels)
	{
		loadthis = 0;

		if (cppBlackList.Contains(lvl));
		else if (cppWhiteList.Contains(lvl)) loadthis = true;
		else {
			bool ceq[7];
			for (const auto& crd : cppLoadList) // here is filter code 
			{
				cppCoordsEq(crd, lvl.coords, true, false, ceq[0], ceq[1], ceq[2], ceq[3], ceq[4], ceq[5], ceq[6]);
				if (ceq[3] && ceq[4] && ceq[5] && !lvl.uniqName.ToString().EndsWith(L"refl")) loadthis = true; //reflections setup separately, load all on floor
				if (ceq[6] && lvl.uniqName.ToString().EndsWith(L"refl")) loadthis = true;
				//if (ceq[6]) loadthis = true; //classic load with parallax
			}
		}

		if (loadthis) {
			if (cppCreatedList.Contains(lvl.uniqName)) { /*if already created level*/
				ULevelStreaming* outlvl_ = nullptr;
				if ((outlvl_ = UGameplayStatics::GetStreamingLevel(WorldContextObject, lvl.uniqName)) != nullptr) {
					outlvl_->SetShouldBeLoaded(true);
					outlvl_->SetShouldBeVisible(true);
					cpploadedList.Add(lvl.uniqName);
					outStruct.Add(outlvl_);
				}
			}
			else { /*load new level instance*/

				bool b;
				if (ULevelStreamingDynamic* newlvl = ULevelStreamingDynamic::LoadLevelInstance(WorldContextObject, lvl.path, FVector(0, 0, lvl.Z), FRotator(0), b, lvl.uniqName.ToString())) {
					newlvl->SetPriority(lvl.coords.flat == -1 ? 1 : 0);
					newlvl->bShouldBlockOnLoad = lvl.dontUnload;
					cppCreatedList.Add(lvl.uniqName); 
					cpploadedList.Add(lvl.uniqName);
					outStruct.Add(newlvl);
				}

			}
		}
		else if (cppCreatedList.Contains(lvl.uniqName)) {
			ULevelStreaming* outlvl_ = nullptr;
			if ((outlvl_ = UGameplayStatics::GetStreamingLevel(WorldContextObject, lvl.uniqName)) != nullptr) {
				//if (lvl.path.EndsWith("refl")) outlvl_->bShouldBlockOnUnload = true;
				outlvl_->SetShouldBeLoaded(lvl.dontUnload);
				outlvl_->SetShouldBeVisible(false);
				cpploadedList.Remove(lvl.uniqName);
				outStruct.Add(outlvl_);
			}
		}
	}


	cppWhiteList.Empty();
	cppBlackList.Empty();
	cppLoadList.Empty();
	return outStruct;
}



void UcppGI::cppCoordsEq(Fcppcoords coords, Fcppcoords coords1, bool relevantMinus2, bool fastEq, bool& flat_, bool& type_, bool& zone_, bool& house_, bool& section_, bool& floor_, bool& fullEq)
{
	bool* outLvl[6] = { &flat_, &type_, &zone_, &house_, &section_, &floor_ };
	int32 c1[6] = { coords.flat,coords.type, coords.zone, coords.house, coords.section, coords.floor };
	int32 c2[6] = { coords1.flat,coords1.type, coords1.zone, coords1.house, coords1.section, coords1.floor };
	int32 mins[6] = { 0,0,1,1,1,0 };
	if (fastEq) {
		for (int8 i = 0; i < 6; i++)
		{
			*outLvl[i] = (c1[i] == c2[i]);
		}
	}
	else {
		for (int8 i = 0; i < 6; i++) {
			*outLvl[i] = ((c1[i] < mins[i]) && (c2[i] < mins[i])) || (c1[i] == c2[i]) || ((c1[i] == -2) && relevantMinus2) || ((c2[i] == -2) && relevantMinus2);
		}
	}
	fullEq = true;
	for (const auto var : outLvl)
	{
		if (!*var)fullEq = false;
	}

}