// Copyright Epic Games, Inc. All Rights Reserved.

/*=============================================================================
        DerivedDataCacheCommandlet.cpp: Commandlet for DDC maintenence
=============================================================================*/

#pragma once

#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "Commandlets/Commandlet.h"
#include "DerivedDataCacheCommandlet.generated.h"

UCLASS()
class UDerivedDataCacheCommandlet: public UCommandlet
{
    GENERATED_UCLASS_BODY()
    UDerivedDataCacheCommandlet(FVTableHelper& Helper);  // Declare the FVTableHelper constructor manually so that we can forward-declare-only TUniquePtrs in the header without getting compile error in generated cpp

    //~ Begin UCommandlet Interface
    virtual int32 Main(const FString& Params) override;
    //~ End UCommandlet Interface

    // Objects currently being cached along with when was the last time in seconds we verified if they were still compiling
    // The last time is used to do some throttling on the IsCachedCookedPlatformDataLoaded which can be quite expensive on some objects
    TMap<UObject*, double> CachingObjects;
    TSet<FName> ProcessedPackages;
    TSet<FName> PackagesToProcess;
    double FinishCacheTime = 0.0;
    double BeginCacheTime  = 0.0;

    class FPackageListener;
    TUniquePtr<FPackageListener> PackageListener;

    class FObjectReferencer;
    TUniquePtr<FObjectReferencer> ObjectReferencer;

    void MaybeMarkPackageAsAlreadyLoaded(UPackage* Package);

    void CacheLoadedPackages(UPackage* CurrentPackage, uint8 PackageFilter, const TArray<ITargetPlatform*>& Platforms);
    bool ProcessCachingObjects(const TArray<ITargetPlatform*>& Platforms);
    void FinishCachingObjects(const TArray<ITargetPlatform*>& Platforms);
};