// Portage UE 5.5 - voir LPOutdoorRoomSubsystem.h

#include "LPOutdoorRoomSubsystem.h"

#include "Components/SceneComponent.h"
#include "Engine/GameInstance.h"
#include "GameFramework/Actor.h"
#include "LifePlay.h"
#include "UObject/UnrealType.h"

namespace
{
	// Interieurs : 0,2 a 0,4 ; exterieurs : 0,01. Le seuil laisse une marge des deux cotes.
	constexpr double OutdoorScaleZ = 0.05;
	const FName RoomPropertyName(TEXT("Room"));
	const FName CeilingPropertyName(TEXT("WallT"));

	template <typename T>
	T* GetObjectProperty(const UObject* Container, FName Name)
	{
		const FObjectPropertyBase* Prop = Container ? CastField<FObjectPropertyBase>(Container->GetClass()->FindPropertyByName(Name)) : nullptr;
		return Prop ? Cast<T>(Prop->GetObjectPropertyValue_InContainer(Container)) : nullptr;
	}
}

void ULPOutdoorRoomSubsystem::Initialize(FSubsystemCollectionBase& Collection)
{
	Super::Initialize(Collection);
	TickHandle = FTSTicker::GetCoreTicker().AddTicker(FTickerDelegate::CreateUObject(this, &ULPOutdoorRoomSubsystem::Tick));
}

void ULPOutdoorRoomSubsystem::Deinitialize()
{
	FTSTicker::GetCoreTicker().RemoveTicker(TickHandle);
	Super::Deinitialize();
}

bool ULPOutdoorRoomSubsystem::Tick(float DeltaTime)
{
	const AActor* Room = GetObjectProperty<AActor>(GetGameInstance(), RoomPropertyName);
	USceneComponent* Root = IsValid(Room) ? Room->GetRootComponent() : nullptr;
	USceneComponent* Ceiling = IsValid(Room) ? GetObjectProperty<USceneComponent>(Room, CeilingPropertyName) : nullptr;

	// Plafond masque precedemment mais qui n'est plus celui de la piece courante : le rendre.
	if (HiddenCeiling.IsValid() && HiddenCeiling.Get() != Ceiling)
	{
		HiddenCeiling->SetHiddenInGame(false);
		HiddenCeiling.Reset();
	}
	if (!Root || !Ceiling)
	{
		return true;
	}

	const bool bOutdoor = Root->GetRelativeScale3D().Z < OutdoorScaleZ;
	if (bOutdoor && !Ceiling->bHiddenInGame)
	{
		Ceiling->SetHiddenInGame(true);
		HiddenCeiling = Ceiling;
		UE_LOG(LogLifePlay, Log, TEXT("Piece exterieure (echelle Z %.3f) : plafond WallT masque"), Root->GetRelativeScale3D().Z);
	}
	else if (!bOutdoor && HiddenCeiling.Get() == Ceiling)
	{
		Ceiling->SetHiddenInGame(false);
		HiddenCeiling.Reset();
		UE_LOG(LogLifePlay, Log, TEXT("Piece interieure (echelle Z %.3f) : plafond WallT rendu visible"), Root->GetRelativeScale3D().Z);
	}
	return true;
}