/*
* Copyright (c) <2017> Side Effects Software Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/

#include "HoudiniAssetParameterString.h"

#include "HoudiniApi.h"
#include "HoudiniEngineRuntimePrivatePCH.h"
#include "HoudiniEngineUtils.h"
#include "HoudiniAssetComponent.h"
#include "HoudiniEngine.h"
#include "HoudiniEngineString.h"

#include "Misc/Variant.h"
#include "Internationalization/Internationalization.h"
#define LOCTEXT_NAMESPACE HOUDINI_LOCTEXT_NAMESPACE 

UHoudiniAssetParameterString::UHoudiniAssetParameterString( const FObjectInitializer & ObjectInitializer )
    : Super( ObjectInitializer )
{
    Values.Add( TEXT( "" ) );
}

UHoudiniAssetParameterString *
UHoudiniAssetParameterString::Create(
    UObject * InPrimaryObject,
    UHoudiniAssetParameter * InParentParameter,
    HAPI_NodeId InNodeId, const HAPI_ParmInfo & ParmInfo )
{
    UObject * Outer = InPrimaryObject;
    if ( !Outer )
    {
        Outer = InParentParameter;
        if ( !Outer )
        {
            // Must have either component or parent not null.
            check( false );
        }
    }

    UHoudiniAssetParameterString * HoudiniAssetParameterString = NewObject< UHoudiniAssetParameterString >(
        Outer, UHoudiniAssetParameterString::StaticClass(), NAME_None, RF_Public | RF_Transactional );

    HoudiniAssetParameterString->CreateParameter( InPrimaryObject, InParentParameter, InNodeId, ParmInfo );
    return HoudiniAssetParameterString;
}

bool
UHoudiniAssetParameterString::CreateParameter(
    UObject * InPrimaryObject,
    UHoudiniAssetParameter * InParentParameter,
    HAPI_NodeId InNodeId, const HAPI_ParmInfo & ParmInfo )
{
    if ( !Super::CreateParameter( InPrimaryObject, InParentParameter, InNodeId, ParmInfo ) )
        return false;

    // We can only handle string type.
    if ( ParmInfo.type != HAPI_PARMTYPE_STRING )
        return false;

    // Assign internal Hapi values index.
    SetValuesIndex( ParmInfo.stringValuesIndex );

    // Get the actual value for this property.
    TArray< HAPI_StringHandle > StringHandles;
    StringHandles.SetNumZeroed( TupleSize );
    if ( FHoudiniApi::GetParmStringValues(
        FHoudiniEngine::Get().GetSession(), InNodeId, false,
        &StringHandles[ 0 ], ValuesIndex, TupleSize) != HAPI_RESULT_SUCCESS )
    {
        return false;
    }

    // Convert HAPI string handles to Unreal strings.
    Values.SetNum( TupleSize );
    for ( int32 Idx = 0; Idx < TupleSize; ++Idx )
    {
        FString ValueString = TEXT( "" );
        FHoudiniEngineString HoudiniEngineString( StringHandles[ Idx ] );
        HoudiniEngineString.ToFString( ValueString );
        Values[ Idx ] = ValueString;
    }

    return true;
}

void
UHoudiniAssetParameterString::Serialize( FArchive & Ar )
{
    // Call base implementation.
    Super::Serialize( Ar );

    Ar.UsingCustomVersion( FHoudiniCustomSerializationVersion::GUID );

    Ar << Values;
}

bool
UHoudiniAssetParameterString::UploadParameterValue()
{
    for ( int32 Idx = 0; Idx < Values.Num(); ++Idx )
    {
        std::string ConvertedString = TCHAR_TO_UTF8( *( Values[ Idx ] ) );
        if ( FHoudiniApi::SetParmStringValue(
            FHoudiniEngine::Get().GetSession(), NodeId,
            ConvertedString.c_str(), ParmId, Idx ) != HAPI_RESULT_SUCCESS )
        {
            return false;
        }
    }

    return Super::UploadParameterValue();
}

bool
UHoudiniAssetParameterString::SetParameterVariantValue(
    const FVariant & Variant, int32 Idx, bool bTriggerModify, bool bRecordUndo )
{
    EVariantTypes VariantType = Variant.GetType();

    if ( !Values.IsValidIndex(Idx) )
        return false;

    if (EVariantTypes::String != VariantType)
        return false;

    const FString & VariantStringValue = Variant.GetValue< FString >();

#if WITH_EDITOR

    FScopedTransaction Transaction(
        TEXT(HOUDINI_MODULE_RUNTIME),
        LOCTEXT("HoudiniAssetParameterStringChange", "Houdini Parameter String: Changing a value"),
        PrimaryObject);

    Modify();

    if (!bRecordUndo)
        Transaction.Cancel();

#endif

    Values[Idx] = VariantStringValue;
    MarkChanged();

    return true;
}

#if WITH_EDITOR

void
UHoudiniAssetParameterString::SetValueCommitted( const FText & InValue, ETextCommit::Type CommitType, int32 Idx )
{
    if (!Values.IsValidIndex(Idx))
        return;

    FString CommittedValue = InValue.ToString();
    if (Values[Idx] == CommittedValue)
        return;

    // Record undo information.
    FScopedTransaction Transaction(
        TEXT( HOUDINI_MODULE_RUNTIME ),
        LOCTEXT( "HoudiniAssetParameterStringChange", "Houdini Parameter String: Changing a value" ),
        PrimaryObject );
    Modify();

    Values[ Idx ] = CommittedValue;

    // Mark this parameter as changed.
    MarkChanged();
}

#endif

#undef LOCTEXT_NAMESPACE