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

#pragma once

#include "CoreMinimal.h"

class FLinker;
struct FLinkerExportObject;
class FOutputDevice;

class FLinkerDiff
{
public:
    static COREUOBJECT_API FLinkerDiff CompareLinkers(FLinker* LHSLinker, FLinker* RHSLinker);

    COREUOBJECT_API bool HasDiffs() const;

    COREUOBJECT_API void PrintDiff(FOutputDevice& Ar);

private:
    void Generate(FLinker* LHSLinker, FLinker* RHSLinker);

    void GenerateSummaryDiff(FLinker* LHSLinker, FLinker* RHSLinker);
    void GenerateNameMapDiff(FLinker* LHSLinker, FLinker* RHSLinker);
    void GenerateGatherableTextDataMapDiff(FLinker* LHSLinker, FLinker* RHSLinker);
    void GenerateImportMapDiff(FLinker* LHSLinker, FLinker* RHSLinker);
    void GenerateExportAndDependsMapDiff(FLinker* LHSLinker, FLinker* RHSLinker);
    void GenerateSofPackageReferenceDiff(FLinker* LHSLinker, FLinker* RHSLinker);
    void GenerateSearchableNameMapDiff(FLinker* LHSLinker, FLinker* RHSLinker);

    void GenerateExportDiff(FLinker* LHSLinker, const FLinkerExportObject& LHSExport, const FLinkerExportObject& RHSExport);
    void GenerateDependsArrayDiff(FLinker* LHSLinker, int32 LHSIndex, FLinker* RHSLinker, int32 RHSIndex);
    void GenerateSearchableNameArrayDiff(const TArray<FName>& LHSNameArray, const TArray<FName>& RHSNameArray);

    // Array of diffs
    FString PackageName;
    TArray<FString> SummaryDiffs;
    TArray<FString> NameMapDiffs;
    TArray<FString> GatherableTextDataDiffs;
    TArray<FString> ImportDiffs;
    TArray<FString> ExportDiffs;
    TArray<FString> SoftPackageReferenceDiffs;
    TArray<FString> SearchableNameDiffs;
};