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

/*=============================================================================
        InternalImportUtils.cpp: Internal import utils functions.
=============================================================================*/

#include "ImportUtils/InternalImportUtils.h"

#include "Containers/UnrealString.h"
#include "CoreMinimal.h"
#include "Engine/EngineTypes.h"
#include "Factories/FbxMeshImportData.h"
#include "UObject/MetaData.h"
#include "UObject/NameTypes.h"
#include "UObject/Object.h"
#include "UObject/Package.h"

bool InternalImportUtils::IsUsingMaterialSlotNameWorkflow(UAssetImportData* AssetImportData)
{
    UFbxMeshImportData* ImportData = Cast<UFbxMeshImportData>(AssetImportData);
    if (ImportData == nullptr || ImportData->ImportMaterialOriginalNameData.Num() <= 0)
    {
        return false;
    }
    bool AllNameAreNone = true;
    for (FName ImportMaterialName: ImportData->ImportMaterialOriginalNameData)
    {
        if (ImportMaterialName != NAME_None)
        {
            AllNameAreNone = false;
            break;
        }
    }
    return !AllNameAreNone;
}

void InternalImportUtils::RestoreMetaData(UObject* TargetObject, const TMap<FName, FString>& ExistingUMetaDataTagValues)
{
    if (ExistingUMetaDataTagValues.Num() > 0)
    {
        UMetaData* PackageMetaData = TargetObject->GetOutermost()->GetMetaData();
        checkSlow(PackageMetaData);

        TMap<FName, FString> MetaDataToApply(ExistingUMetaDataTagValues);
        // Keep all existing metadata, but override/add those who were imported.
        if (TMap<FName, FString>* ImportedMetaData = UMetaData::GetMapForObject(TargetObject))
        {
            for (const TPair<FName, FString>& KeyValue: *ImportedMetaData)
            {
                MetaDataToApply.Add(KeyValue);
            }
        }
        PackageMetaData->SetObjectValues(TargetObject, MetaDataToApply);
    }
}