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

#include "Serialization/JsonInternationalizationArchiveSerializer.h"
#include "Misc/FileHelper.h"
#include "Serialization/JsonReader.h"
#include "Serialization/JsonSerializer.h"
#include "Serialization/JsonInternationalizationMetadataSerializer.h"
#include "LocTextHelper.h"


DEFINE_LOG_CATEGORY_STATIC(LogInternationalizationArchiveSerializer, Log, All);


const FString FJsonInternationalizationArchiveSerializer::TAG_FORMATVERSION = TEXT("FormatVersion");
const FString FJsonInternationalizationArchiveSerializer::TAG_NAMESPACE = TEXT("Namespace");
const FString FJsonInternationalizationArchiveSerializer::TAG_KEY = TEXT("Key");
const FString FJsonInternationalizationArchiveSerializer::TAG_CHILDREN = TEXT("Children");
const FString FJsonInternationalizationArchiveSerializer::TAG_SUBNAMESPACES = TEXT("Subnamespaces");
const FString FJsonInternationalizationArchiveSerializer::TAG_DEPRECATED_DEFAULTTEXT = TEXT("DefaultText");
const FString FJsonInternationalizationArchiveSerializer::TAG_DEPRECATED_TRANSLATEDTEXT = TEXT("TranslatedText");
const FString FJsonInternationalizationArchiveSerializer::TAG_OPTIONAL = TEXT("Optional");
const FString FJsonInternationalizationArchiveSerializer::TAG_SOURCE = TEXT("Source");
const FString FJsonInternationalizationArchiveSerializer::TAG_SOURCE_TEXT = TEXT("Text");
const FString FJsonInternationalizationArchiveSerializer::TAG_TRANSLATION = TEXT("Translation");
const FString FJsonInternationalizationArchiveSerializer::TAG_TRANSLATION_TEXT = FJsonInternationalizationArchiveSerializer::TAG_SOURCE_TEXT;
const FString FJsonInternationalizationArchiveSerializer::TAG_METADATA = TEXT("MetaData");
const FString FJsonInternationalizationArchiveSerializer::TAG_METADATA_KEY = TEXT("Key");
const FString FJsonInternationalizationArchiveSerializer::NAMESPACE_DELIMITER = TEXT(".");


struct FCompareArchiveEntryBySourceAndKey
{
	FORCEINLINE bool operator()( TSharedPtr< FArchiveEntry > A, TSharedPtr< FArchiveEntry > B ) const
	{
		bool bResult = false;
		if( A->Source < B->Source )
		{
			bResult = true;
		}
		else if( A->Source == B->Source )
		{
			if( A->KeyMetadataObj.IsValid() != B->KeyMetadataObj.IsValid() )
			{
				bResult = B->KeyMetadataObj.IsValid();
			}
			else if( A->KeyMetadataObj.IsValid() && B->KeyMetadataObj.IsValid() )
			{
				bResult = (*(A->KeyMetadataObj) < *(B->KeyMetadataObj));
			}
		}
		return bResult;
	}
};


struct FCompareStructuredArchiveEntryByNamespace
{
	FORCEINLINE bool operator()( TSharedPtr< FStructuredArchiveEntry > A, TSharedPtr< FStructuredArchiveEntry > B ) const
	{
		return A->Namespace < B->Namespace;
	}
};


bool FJsonInternationalizationArchiveSerializer::DeserializeArchive(const FString& InStr, TSharedRef<FInternationalizationArchive> InArchive, TSharedPtr<const FInternationalizationManifest> InManifest, TSharedPtr<const FInternationalizationArchive> InNativeArchive)
{
	TSharedPtr< FJsonObject > JsonArchiveObj;
	TSharedRef< TJsonReader<> > Reader = TJsonReaderFactory<>::Create(InStr);
	
	if (FJsonSerializer::Deserialize(Reader, JsonArchiveObj) && JsonArchiveObj.IsValid())
	{
		return DeserializeInternal(JsonArchiveObj.ToSharedRef(), InArchive, InManifest, InNativeArchive);
	}

	return false;
}


bool FJsonInternationalizationArchiveSerializer::DeserializeArchive(TSharedRef<FJsonObject> InJsonObj, TSharedRef<FInternationalizationArchive> InArchive, TSharedPtr<const FInternationalizationManifest> InManifest, TSharedPtr<const FInternationalizationArchive> InNativeArchive)
{
	return DeserializeInternal(InJsonObj, InArchive, InManifest, InNativeArchive);
}


bool FJsonInternationalizationArchiveSerializer::DeserializeArchiveFromFile(const FString& InJsonFile, TSharedRef<FInternationalizationArchive> InArchive, TSharedPtr<const FInternationalizationManifest> InManifest, TSharedPtr<const FInternationalizationArchive> InNativeArchive)
{
	// Read in file as string
	FString FileContents;
	if (!FFileHelper::LoadFileToString(FileContents, *InJsonFile))
	{
		UE_LOG(LogInternationalizationArchiveSerializer, Error, TEXT("Failed to load archive '%s'."), *InJsonFile);
		return false;
	}

	// Parse as JSON
	TSharedPtr<FJsonObject> JsonObject;

	TSharedRef<TJsonReader<>> JsonReader = TJsonReaderFactory<>::Create(FileContents);
	if (!FJsonSerializer::Deserialize(JsonReader, JsonObject) || !JsonObject.IsValid())
	{
		UE_LOG(LogInternationalizationArchiveSerializer, Error, TEXT("Failed to parse archive '%s'. %s."), *InJsonFile, *JsonReader->GetErrorMessage());
		return false;
	}

	return DeserializeInternal(JsonObject.ToSharedRef(), InArchive, InManifest, InNativeArchive);
}


bool FJsonInternationalizationArchiveSerializer::SerializeArchive( TSharedRef< const FInternationalizationArchive > InArchive, FString& Str )
{
	TSharedRef< FJsonObject > JsonArchiveObj = MakeShareable( new FJsonObject );
	bool bExecSuccessful = SerializeInternal( InArchive, JsonArchiveObj );

	if( bExecSuccessful )
	{
		TSharedRef< TJsonWriter<> > Writer = TJsonWriterFactory<>::Create( &Str );
		bExecSuccessful = FJsonSerializer::Serialize( JsonArchiveObj, Writer );
		Writer->Close();
	}

	return bExecSuccessful;
}


bool FJsonInternationalizationArchiveSerializer::SerializeArchive( TSharedRef< const FInternationalizationArchive > InArchive, TSharedRef< FJsonObject > InJsonObj )
{
	return SerializeInternal( InArchive, InJsonObj );
}


bool FJsonInternationalizationArchiveSerializer::SerializeArchiveToFile(TSharedRef<const FInternationalizationArchive> InArchive, const FString& InJsonFile)
{
	TSharedRef<FJsonObject> JsonObject = MakeShareable(new FJsonObject());
	if (!SerializeArchive(InArchive, JsonObject))
	{
		UE_LOG(LogInternationalizationArchiveSerializer, Error, TEXT("Failed to serialize archive '%s'."), *InJsonFile);
		return false;
	}

	// Print the JSON data to a string
	FString OutputJsonString;
	TSharedRef<TJsonWriter<>> JsonWriter = TJsonWriterFactory<>::Create(&OutputJsonString);
	FJsonSerializer::Serialize(JsonObject, JsonWriter);

	// Save the JSON string (force Unicode for our manifest and archive files)
	if (!FFileHelper::SaveStringToFile(OutputJsonString, *InJsonFile, FFileHelper::EEncodingOptions::ForceUnicode))
	{
		UE_LOG(LogInternationalizationArchiveSerializer, Error, TEXT("Failed to save archive '%s'."), *InJsonFile);
		return false;
	}

	return true;
}


bool FJsonInternationalizationArchiveSerializer::DeserializeInternal(TSharedRef<FJsonObject> InJsonObj, TSharedRef<FInternationalizationArchive> InArchive, TSharedPtr<const FInternationalizationManifest> InManifest, TSharedPtr<const FInternationalizationArchive> InNativeArchive)
{
	if (InJsonObj->HasField(TAG_FORMATVERSION))
	{
		const int32 FormatVersion = static_cast<int32>(InJsonObj->GetNumberField(TAG_FORMATVERSION));
		if (FormatVersion > (int32)FInternationalizationArchive::EFormatVersion::Latest)
		{
			// Archive is too new to be loaded!
			return false;
		}

		InArchive->SetFormatVersion(static_cast<FInternationalizationArchive::EFormatVersion>(FormatVersion));
	}
	else
	{
		InArchive->SetFormatVersion(FInternationalizationArchive::EFormatVersion::Initial);
	}

	if (InArchive->GetFormatVersion() < FInternationalizationArchive::EFormatVersion::AddedKeys && !InManifest.IsValid())
	{
		// Cannot load these archives without a manifest to key against
		return false;
	}

	if (JsonObjToArchive(InJsonObj, FString(), InArchive, InManifest, InNativeArchive))
	{
		// We've been upgraded to the latest format now...
		InArchive->SetFormatVersion(FInternationalizationArchive::EFormatVersion::Latest);
		return true;
	}

	return false;
}


bool FJsonInternationalizationArchiveSerializer::SerializeInternal(TSharedRef<const FInternationalizationArchive> InArchive, TSharedRef<FJsonObject> JsonObj)
{
	TSharedPtr<FStructuredArchiveEntry> RootElement = MakeShareable(new FStructuredArchiveEntry(FString()));

	// Condition the data so that it exists in a structured hierarchy for easy population of the JSON object.
	GenerateStructuredData(InArchive, RootElement);

	SortStructuredData(RootElement);

	// Clear anything that may be in the JSON object
	JsonObj->Values.Empty();

	// Set format version.
	JsonObj->SetNumberField(TAG_FORMATVERSION, static_cast<double>(InArchive->GetFormatVersion()));

	// Setup the JSON object using the structured data created
	StructuredDataToJsonObj(RootElement, JsonObj);
	return true;
}


bool FJsonInternationalizationArchiveSerializer::JsonObjToArchive(TSharedRef<FJsonObject> InJsonObj, const FString& ParentNamespace, TSharedRef<FInternationalizationArchive> InArchive, TSharedPtr<const FInternationalizationManifest> InManifest, TSharedPtr<const FInternationalizationArchive> InNativeArchive)
{
	bool bConvertSuccess = true;
	FString AccumulatedNamespace = ParentNamespace;

	if (InJsonObj->HasField(TAG_NAMESPACE))
	{
		if (!(AccumulatedNamespace.IsEmpty()))
		{
			AccumulatedNamespace += NAMESPACE_DELIMITER;
		}
		AccumulatedNamespace += InJsonObj->GetStringField(TAG_NAMESPACE);
	}
	else
	{
		UE_LOG(LogInternationalizationArchiveSerializer, Warning, TEXT("Encountered an object with a missing namespace while converting to Internationalization archive."));
		bConvertSuccess = false;
	}

	// Process all the child objects
	if (bConvertSuccess && InJsonObj->HasField(TAG_CHILDREN))
	{
		const TArray< TSharedPtr<FJsonValue> > ChildrenArray = InJsonObj->GetArrayField(TAG_CHILDREN);

		for (TArray< TSharedPtr< FJsonValue > >::TConstIterator ChildIter(ChildrenArray.CreateConstIterator()); ChildIter; ++ChildIter)
		{
			const TSharedPtr< FJsonValue >  ChildEntry = *ChildIter;
			const TSharedPtr< FJsonObject > ChildJSONObject = ChildEntry->AsObject();

			FString SourceText;
			TSharedPtr< FLocMetadataObject > SourceMetadata;
			if (ChildJSONObject->HasTypedField< EJson::String >(TAG_DEPRECATED_DEFAULTTEXT))
			{
				SourceText = ChildJSONObject->GetStringField(TAG_DEPRECATED_DEFAULTTEXT);
			}
			else if (ChildJSONObject->HasTypedField< EJson::Object >(TAG_SOURCE))
			{
				const TSharedPtr< FJsonObject > SourceJSONObject = ChildJSONObject->GetObjectField(TAG_SOURCE);
				if (SourceJSONObject->HasTypedField< EJson::String >(TAG_SOURCE_TEXT))
				{
					SourceText = SourceJSONObject->GetStringField(TAG_SOURCE_TEXT);

					// Source meta data is mixed in with the source text, we'll process metadata if the source json object has more than one entry
					if (SourceJSONObject->Values.Num() > 1)
					{
						// We load in the entire source object as metadata and just remove the source text.
						FJsonInternationalizationMetaDataSerializer::DeserializeMetadata(SourceJSONObject.ToSharedRef(), SourceMetadata);
						if (SourceMetadata.IsValid())
						{
							SourceMetadata->Values.Remove(TAG_SOURCE_TEXT);
						}
					}
				}
				else
				{
					bConvertSuccess = false;
				}
			}
			else
			{
				bConvertSuccess = false;
			}

			FString TranslationText;
			TSharedPtr< FLocMetadataObject > TranslationMetadata;
			if (ChildJSONObject->HasTypedField< EJson::String >(TAG_DEPRECATED_TRANSLATEDTEXT))
			{
				TranslationText = ChildJSONObject->GetStringField(TAG_DEPRECATED_TRANSLATEDTEXT);
			}
			else if (ChildJSONObject->HasTypedField< EJson::Object >(TAG_TRANSLATION))
			{
				const TSharedPtr< FJsonObject > TranslationJSONObject = ChildJSONObject->GetObjectField(TAG_TRANSLATION);
				if (TranslationJSONObject->HasTypedField< EJson::String >(TAG_TRANSLATION_TEXT))
				{
					TranslationText = TranslationJSONObject->GetStringField(TAG_TRANSLATION_TEXT);

					// Source meta data is mixed in with the source text, we'll process metadata if the source json object has more than one entry
					if (TranslationJSONObject->Values.Num() > 1)
					{
						// We load in the entire source object as metadata and remove the source text
						FJsonInternationalizationMetaDataSerializer::DeserializeMetadata(TranslationJSONObject.ToSharedRef(), TranslationMetadata);
						if (TranslationJSONObject.IsValid())
						{
							TranslationJSONObject->Values.Remove(TAG_TRANSLATION_TEXT);
						}
					}
				}
				else
				{
					bConvertSuccess = false;
				}
			}
			else
			{
				bConvertSuccess = false;
			}

			if (bConvertSuccess)
			{
				FLocItem Source(SourceText);
				Source.MetadataObj = SourceMetadata;

				FLocItem Translation(TranslationText);
				Translation.MetadataObj = TranslationMetadata;

				bool bIsOptional = false;
				if (ChildJSONObject->HasTypedField< EJson::Boolean >(TAG_OPTIONAL))
				{
					bIsOptional = ChildJSONObject->GetBoolField(TAG_OPTIONAL);
				}

				TArray<FLocKey> Keys;
				TSharedPtr< FLocMetadataObject > KeyMetadataNode;
				if (InArchive->GetFormatVersion() < FInternationalizationArchive::EFormatVersion::AddedKeys)
				{
					// We used to store the key meta-data as a top-level value, rather than within a "MetaData" object
					if (ChildJSONObject->HasTypedField< EJson::Object >(TAG_METADATA_KEY))
					{
						const TSharedPtr< FJsonObject > MetaDataKeyJSONObject = ChildJSONObject->GetObjectField(TAG_METADATA_KEY);
						FJsonInternationalizationMetaDataSerializer::DeserializeMetadata(MetaDataKeyJSONObject.ToSharedRef(), KeyMetadataNode);
					}

					if (InManifest.IsValid())
					{
						// We have no key in the archive data, so we must try and infer it from the manifest
						FLocTextHelper::FindKeysForLegacyTranslation(InManifest.ToSharedRef(), InNativeArchive, AccumulatedNamespace, SourceText, KeyMetadataNode, Keys);
					}
				}
				else
				{
					if (ChildJSONObject->HasTypedField< EJson::String >(TAG_KEY))
					{
						Keys.Add(ChildJSONObject->GetStringField(TAG_KEY));
					}

					if (ChildJSONObject->HasTypedField< EJson::Object >(TAG_METADATA))
					{
						const TSharedPtr< FJsonObject > MetaDataJSONObject = ChildJSONObject->GetObjectField(TAG_METADATA);

						if (MetaDataJSONObject->HasTypedField< EJson::Object >(TAG_METADATA_KEY))
						{
							const TSharedPtr< FJsonObject > MetaDataKeyJSONObject = MetaDataJSONObject->GetObjectField(TAG_METADATA_KEY);
							FJsonInternationalizationMetaDataSerializer::DeserializeMetadata(MetaDataKeyJSONObject.ToSharedRef(), KeyMetadataNode);
						}
					}
				}

				for (const FLocKey& Key : Keys)
				{
					const bool bAddSuccessful = InArchive->AddEntry(AccumulatedNamespace, Key, Source, Translation, KeyMetadataNode, bIsOptional);
					if (!bAddSuccessful)
					{
						UE_LOG(LogInternationalizationArchiveSerializer, Warning, TEXT("Could not add JSON entry to the Internationalization archive: Namespace:%s Key:%s DefaultText:%s"), *AccumulatedNamespace, *Key.GetString(), *SourceText);
					}
				}
			}
		}
	}

	if (bConvertSuccess && InJsonObj->HasField(TAG_SUBNAMESPACES))
	{
		const TArray< TSharedPtr<FJsonValue> > SubnamespaceArray = InJsonObj->GetArrayField(TAG_SUBNAMESPACES);

		for (TArray< TSharedPtr< FJsonValue > >::TConstIterator SubnamespaceIter(SubnamespaceArray.CreateConstIterator()); SubnamespaceIter; ++SubnamespaceIter)
		{
			const TSharedPtr< FJsonValue >  SubnamespaceEntry = *SubnamespaceIter;
			const TSharedPtr< FJsonObject > SubnamespaceJSONObject = SubnamespaceEntry->AsObject();

			if (!JsonObjToArchive(SubnamespaceJSONObject.ToSharedRef(), AccumulatedNamespace, InArchive, InManifest, InNativeArchive))
			{
				bConvertSuccess = false;
				break;
			}
		}
	}

	return bConvertSuccess;
}


void FJsonInternationalizationArchiveSerializer::GenerateStructuredData( TSharedRef< const FInternationalizationArchive > InArchive, TSharedPtr<FStructuredArchiveEntry> RootElement )
{
	//Loop through all the unstructured archive entries and build up our structured hierarchy
	for(FArchiveEntryByStringContainer::TConstIterator It( InArchive->GetEntriesBySourceTextIterator() ); It; ++It)
	{
		const TSharedRef< FArchiveEntry > UnstructuredArchiveEntry = It.Value();

		TArray< FString > NamespaceTokens;

		// Tokenize the namespace by using '.' as a delimiter
		int32 NamespaceTokenCount = UnstructuredArchiveEntry->Namespace.GetString().ParseIntoArray( NamespaceTokens, *NAMESPACE_DELIMITER, true );

		TSharedPtr< FStructuredArchiveEntry > StructuredArchiveEntry = RootElement;
		//Loop through all the namespace tokens and find the appropriate structured entry, if it does not exist add it.  At the end StructuredArchiveEntry
		//  will point to the correct hierarchy entry for a given namespace
		for( int32 TokenIndex = 0; TokenIndex < NamespaceTokenCount; ++TokenIndex )
		{
			TSharedPtr<FStructuredArchiveEntry> FoundNamespaceEntry;
			for( int SubNamespaceIndex = 0; SubNamespaceIndex < StructuredArchiveEntry->SubNamespaces.Num(); SubNamespaceIndex++ )
			{
				if( StructuredArchiveEntry->SubNamespaces[SubNamespaceIndex]->Namespace.Equals(NamespaceTokens[TokenIndex], ESearchCase::CaseSensitive) )
				{
					FoundNamespaceEntry = StructuredArchiveEntry->SubNamespaces[SubNamespaceIndex];
					break;
				}
			}

			if( !FoundNamespaceEntry.IsValid() )
			{
				int32 index = StructuredArchiveEntry->SubNamespaces.Add( MakeShareable( new FStructuredArchiveEntry( NamespaceTokens[TokenIndex] ) ) );
				FoundNamespaceEntry = StructuredArchiveEntry->SubNamespaces[index];
			}
			StructuredArchiveEntry = FoundNamespaceEntry;
		}

		// We add the unstructured Archive entry to the hierarchy
		StructuredArchiveEntry->ArchiveEntries.AddUnique( UnstructuredArchiveEntry );
	}
}


void FJsonInternationalizationArchiveSerializer::SortStructuredData( TSharedPtr< FStructuredArchiveEntry > InElement )
{
	if( !InElement.IsValid() )
	{
		return;
	}

	// Sort the manifest entries by source text.
	InElement->ArchiveEntries.Sort( FCompareArchiveEntryBySourceAndKey() );

	// Sort the subnamespaces by namespace string
	InElement->SubNamespaces.Sort( FCompareStructuredArchiveEntryByNamespace() );

	// Do the sorting for each of the subnamespaces
	for( TArray< TSharedPtr< FStructuredArchiveEntry > >::TIterator Iter( InElement->SubNamespaces.CreateIterator() ); Iter; ++Iter )
	{
		TSharedPtr< FStructuredArchiveEntry > SubElement = *Iter;

		SortStructuredData( SubElement );
	}
}


void FJsonInternationalizationArchiveSerializer::StructuredDataToJsonObj( TSharedPtr< const FStructuredArchiveEntry > InElement, TSharedRef< FJsonObject > OutJsonObj )
{
	OutJsonObj->SetStringField( TAG_NAMESPACE, InElement->Namespace );

	TArray< TSharedPtr< FJsonValue > > NamespaceArray;
	TArray< TSharedPtr< FJsonValue > > EntryArray;

	//Write namespace content entries
	for( TArray< TSharedPtr< FArchiveEntry > >::TConstIterator Iter( InElement->ArchiveEntries ); Iter; ++Iter )
	{
		const TSharedPtr< FArchiveEntry > Entry = *Iter;
		TSharedPtr< FJsonObject > EntryNode = MakeShareable( new FJsonObject );

		FString ProcessedSourceText = Entry->Source.Text;
		FString ProcessedTranslation = Entry->Translation.Text;

		TSharedPtr< FJsonObject > SourceNode;
		if( Entry->Source.MetadataObj.IsValid() )
		{
			FJsonInternationalizationMetaDataSerializer::SerializeMetadata( Entry->Source.MetadataObj.ToSharedRef(), SourceNode );
		}

		if( !SourceNode.IsValid() )
		{
			SourceNode = MakeShareable( new FJsonObject );
		}

		SourceNode->SetStringField( TAG_SOURCE_TEXT, ProcessedSourceText );
		EntryNode->SetObjectField( TAG_SOURCE, SourceNode );
		
		TSharedPtr< FJsonObject > TranslationNode;
		if( Entry->Translation.MetadataObj.IsValid() )
		{
			FJsonInternationalizationMetaDataSerializer::SerializeMetadata( Entry->Translation.MetadataObj.ToSharedRef(), TranslationNode );
		}

		if( !TranslationNode.IsValid() )
		{
			TranslationNode = MakeShareable( new FJsonObject );
		}

		TranslationNode->SetStringField( TAG_TRANSLATION_TEXT, ProcessedTranslation );
		EntryNode->SetObjectField( TAG_TRANSLATION, TranslationNode );

		EntryNode->SetStringField( TAG_KEY, Entry->Key.GetString() );

		if( Entry->KeyMetadataObj.IsValid() )
		{
			TSharedRef< FJsonObject > MetaDataNode = MakeShareable(new FJsonObject());
			EntryNode->SetObjectField( TAG_METADATA, MetaDataNode );

			TSharedPtr< FJsonObject > KeyMetaDataNode;
			FJsonInternationalizationMetaDataSerializer::SerializeMetadata( Entry->KeyMetadataObj.ToSharedRef(), KeyMetaDataNode );
			if( KeyMetaDataNode.IsValid() )
			{
				MetaDataNode->SetObjectField( TAG_METADATA_KEY, KeyMetaDataNode );
			}
		}

		// We only add the optional field if it is true, it is assumed to be false otherwise.
		if( Entry->bIsOptional == true )
		{
			EntryNode->SetBoolField( TAG_OPTIONAL, Entry->bIsOptional );
		}

		EntryArray.Add( MakeShareable( new FJsonValueObject( EntryNode ) ) );
	}

	//Write the subnamespaces
	for( TArray< TSharedPtr< FStructuredArchiveEntry > >::TConstIterator Iter( InElement->SubNamespaces ); Iter; ++Iter )
	{
		const TSharedPtr<FStructuredArchiveEntry> SubElement = *Iter;
		if( SubElement.IsValid() )
		{
			TSharedRef<FJsonObject> SubObject = MakeShareable( new FJsonObject );
			StructuredDataToJsonObj( SubElement, SubObject );

			NamespaceArray.Add( MakeShareable( new FJsonValueObject( SubObject ) ) );
		}
	}

	if( EntryArray.Num() > 0 )
	{
		OutJsonObj->SetArrayField( TAG_CHILDREN, EntryArray );
	}

	if( NamespaceArray.Num() > 0 )
	{
		OutJsonObj->SetArrayField( TAG_SUBNAMESPACES, NamespaceArray );
	}
}