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


#include "FormatError.h"

#include "BlueprintActionDatabaseRegistrar.h"
#include "BlueprintNodeSpawner.h"
#include "Containers/EnumAsByte.h"
#include "Containers/UnrealString.h"
#include "EdGraph/EdGraph.h"
#include "EdGraph/EdGraphSchema.h"
#include "EdGraphSchema_K2.h"
#include "EdGraphSchema_K2_Actions.h"
#include "EditorCategoryUtils.h"
#include "Engine/Blueprint.h"
#include "HAL/PlatformCrt.h"
#include "Internationalization/Internationalization.h"
#include "Internationalization/TextFormatter.h"
#include "K2Node_CallFunction.h"
#include "K2Node_MakeArray.h"
#include "K2Node_MakeStruct.h"
#include "Kismet/KismetMathLibrary.h"
#include "Kismet/KismetSystemLibrary.h"
#include "Kismet/KismetTextLibrary.h"
#include "Kismet2/BlueprintEditorUtils.h"
#include "Kismet2/CompilerResultsLog.h"
#include "KismetCompiler.h"
#include "Math/Vector2D.h"
#include "Misc/AssertionMacros.h"
#include "Misc/CString.h"
#include "ScopedTransaction.h"
#include "Templates/Casts.h"
#include "Templates/SubclassOf.h"
#include "UObject/Class.h"
#include "UObject/ObjectPtr.h"
#include "UObject/Package.h"
#include "UObject/UnrealNames.h"
#include "UObject/UnrealType.h"
#include "UObject/WeakObjectPtr.h"
#include "UObject/WeakObjectPtrTemplates.h"

#define LOCTEXT_NAMESPACE "FormatError"

// All argument pins will have Names that start with "A:"

static bool IsArgumentPin(const UEdGraphPin *Pin) {
	TCHAR pname[FName::StringBufferSize];
	Pin->PinName.ToString(pname);
	return pname[0] == 'A' && pname[1] == ':';
}

static FName ArgumentNameAddPrefix(const FString &name) {
	FString Prefixed = FString("A:") + name;
	return FName(*Prefixed);
}

static FString ArgumentNameRemovePrefix(const FName &name) {
	return name.ToString().Mid(2, FName::StringBufferSize);
}

static const FName VerbosityPinName(TEXT("Verbosity"));
static bool IsVerbosityPin(const UEdGraphPin *Pin) {
	return (Pin->PinName == VerbosityPinName);
}

static const FName DisplayDurationPinName(TEXT("DisplayDuration"));
static bool IsDisplayDurationPin(const UEdGraphPin *Pin) {
	return (Pin->PinName == DisplayDurationPinName);
}

static const FName FormatPinName(TEXT("Format"));
static bool IsFormatPin(const UEdGraphPin *Pin) {
	return (Pin->PinName == FormatPinName);
}

UK2Node_FormatError::UK2Node_FormatError(const FObjectInitializer& ObjectInitializer)
	: Super(ObjectInitializer)
{
	NodeTooltip = LOCTEXT("NodeTooltip", 
		"Output an error, warning, or informational message to the log file.\n"
		"\n"
		"  \u2022 Use {ArgName} to denote format arguments, giving each argument a different ArgName.\n"
		"  \u2022 Arguments may be Byte, Integer, Float, Text, String, Name, Boolean, Object or ETextGender.\n"
		"\n"
		"It is often desirable to use this in conjunction with a separate utility that\n"
		"pauses the execution of the blueprint whenever an error is logged."
		);
}

void UK2Node_FormatError::AllocateDefaultPins()
{
	Super::AllocateDefaultPins();
	CreateCorrectPins();
}

void UK2Node_FormatError::CreateCorrectPins()
{
	if (FindPin(UEdGraphSchema_K2::PN_Execute) == nullptr) {
		CreatePin(EGPD_Input, UEdGraphSchema_K2::PC_Exec, UEdGraphSchema_K2::PN_Execute);
	}

	if (FindPin(UEdGraphSchema_K2::PN_Then) == nullptr) {
		CreatePin(EGPD_Output, UEdGraphSchema_K2::PC_Exec, UEdGraphSchema_K2::PN_Then);
	}

	if (FindPin(FormatPinName, EGPD_Input) == nullptr) {
		UEdGraphPin *P = CreatePin(EGPD_Input, UEdGraphSchema_K2::PC_Text, FormatPinName);
		P->DefaultTextValue = LOCTEXT("FormatErrorMessage_DefaultMessage", "Error Message");
	}

	if (FindPin(VerbosityPinName, EGPD_Input) == nullptr) {
		UEdGraphPin *P = CreatePin(EGPD_Input, UEdGraphSchema_K2::PC_Byte, StaticEnum<ElxLogVerbosity>(), VerbosityPinName);
		P->DefaultValue = TEXT("Error");
		P->AutogeneratedDefaultValue = P->DefaultValue;
	}

	if (FindPin(DisplayDurationPinName, EGPD_Input) == nullptr) {
		UEdGraphPin *P = CreatePin(EGPD_Input, UEdGraphSchema_K2::PC_Byte, StaticEnum<ElxDisplayDuration>(), DisplayDurationPinName);
		P->DefaultValue = TEXT("No_Display");
		P->AutogeneratedDefaultValue = P->DefaultValue;
	}

	// Transfer all Existing Argument pins to the Old Pins Map.                                                                               
	TMap<FString, UEdGraphPin *> OldPins;
	for (auto It = Pins.CreateIterator(); It; ++It)
	{
		UEdGraphPin* CheckPin = *It;
		if (IsArgumentPin(CheckPin))
		{
			OldPins.Add(ArgumentNameRemovePrefix(CheckPin->PinName), CheckPin);
			It.RemoveCurrent();
		}
	}

	// Create Argument pins in the correct order, reusing old pins where possible.                                                                    
	for (const FString& Name : PinNames)
	{
		UEdGraphPin **OldPin = OldPins.Find(Name);
		if (OldPin != nullptr) {
			Pins.Emplace(*OldPin);
			OldPins.Remove(Name);
		} else {
			FName PrefixedName = ArgumentNameAddPrefix(Name);
			CreatePin(EGPD_Input, UEdGraphSchema_K2::PC_Wildcard, PrefixedName);
		}
	}

	// Delete any unused pins.                                                                                                                
	for (auto &iter : OldPins)
	{
		iter.Value->Modify();
		iter.Value->MarkAsGarbage();
	}
	OldPins.Empty();
}


void UK2Node_FormatError::SynchronizeArgumentPinType(UEdGraphPin* Pin)
{
	if (IsArgumentPin(Pin))
	{
		const UEdGraphSchema_K2* K2Schema = Cast<const UEdGraphSchema_K2>(GetSchema());

		bool bPinTypeChanged = false;
		if (Pin->LinkedTo.Num() == 0)
		{
			static const FEdGraphPinType WildcardPinType = FEdGraphPinType(UEdGraphSchema_K2::PC_Wildcard, NAME_None, nullptr, EPinContainerType::None, false, FEdGraphTerminalType());

			// Ensure wildcard
			if (Pin->PinType != WildcardPinType)
			{
				Pin->PinType = WildcardPinType;
				bPinTypeChanged = true;
			}
		}
		else
		{
			UEdGraphPin* ArgumentSourcePin = Pin->LinkedTo[0];

			// Take the type of the connected pin
			if (Pin->PinType != ArgumentSourcePin->PinType)
			{
				Pin->PinType = ArgumentSourcePin->PinType;
				bPinTypeChanged = true;
			}
		}

		if (bPinTypeChanged)
		{
			// Let the graph know to refresh
			GetGraph()->NotifyNodeChanged(this);

			UBlueprint* Blueprint = GetBlueprint();
			if (!Blueprint->bBeingCompiled)
			{
				FBlueprintEditorUtils::MarkBlueprintAsModified(Blueprint);
			}
		}
	}
}

FText UK2Node_FormatError::GetNodeTitle(ENodeTitleType::Type TitleType) const
{
	return LOCTEXT("FormatError_Title", "Format Error Message");
}

FText UK2Node_FormatError::GetPinDisplayName(const UEdGraphPin* Pin) const
{
	// The exec pins don't need labels.
	if (Pin->PinType.PinCategory == UEdGraphSchema_K2::PC_Exec)
	{
		return FText::GetEmpty();
	}
	
	// Many pins can go unlabeled if they have default values.
	if (IsFormatPin(Pin) || IsVerbosityPin(Pin) || IsDisplayDurationPin(Pin))
	{
		if (Pin->LinkedTo.Num() == 0)
		{
			return FText::GetEmpty();
		}
	}

	// For argument pins, we must strip off the Argument Pin Prefix.
	if (IsArgumentPin(Pin)) {
		return FText::FromString(ArgumentNameRemovePrefix(Pin->PinName));
	}

	// Otherwise, just return the Pin Name the normal way.
	return FText::FromName(Pin->PinName);
}

void UK2Node_FormatError::PostEditChangeProperty(struct FPropertyChangedEvent& PropertyChangedEvent)
{
	const FName PropertyName = (PropertyChangedEvent.Property  ? PropertyChangedEvent.Property->GetFName() : NAME_None);
	if (PropertyName == GET_MEMBER_NAME_CHECKED(UK2Node_FormatError, PinNames))
	{
		ReconstructNode();
	}
	Super::PostEditChangeProperty(PropertyChangedEvent);
	GetGraph()->NotifyNodeChanged(this);
}

void UK2Node_FormatError::PinConnectionListChanged(UEdGraphPin* Pin)
{
	Modify();
	SynchronizeArgumentPinType(Pin);
}

void UK2Node_FormatError::PinDefaultValueChanged(UEdGraphPin* Pin)
{
	if(IsFormatPin(Pin))
	{
		PinNames.Empty();
		FText::GetFormatPatternParameters(Pin->DefaultTextValue, PinNames);
		CreateCorrectPins();
		GetGraph()->NotifyNodeChanged(this);
	}
}

void UK2Node_FormatError::PinTypeChanged(UEdGraphPin* Pin)
{
	SynchronizeArgumentPinType(Pin);
	Super::PinTypeChanged(Pin);
}

FText UK2Node_FormatError::GetTooltipText() const
{
	return NodeTooltip;
}

UEdGraphPin* FindOutputStructPinChecked(UEdGraphNode* Node)
{
	check(NULL != Node);
	UEdGraphPin* OutputPin = NULL;
	for (int32 PinIndex = 0; PinIndex < Node->Pins.Num(); ++PinIndex)
	{
		UEdGraphPin* Pin = Node->Pins[PinIndex];
		if (Pin && (EGPD_Output == Pin->Direction))
		{
			OutputPin = Pin;
			break;
		}
	}
	check(NULL != OutputPin);
	return OutputPin;
}

void UK2Node_FormatError::PostReconstructNode()
{
	Super::PostReconstructNode();

	UEdGraph* OuterGraph = GetGraph();
	if (!IsTemplate() && OuterGraph && OuterGraph->Schema) {
		for (UEdGraphPin* CurrentPin : Pins)
		{
			// Potentially update an argument pin type
			SynchronizeArgumentPinType(CurrentPin);
		}
	}
}

void UK2Node_FormatError::ExpandNode(class FKismetCompilerContext& CompilerContext, UEdGraph* SourceGraph)
{
	Super::ExpandNode(CompilerContext, SourceGraph);

	/**
		At the end of this, the UK2Node_FormatError will not be a part of the Blueprint, it merely handles connecting
		the other nodes into the Blueprint.
	*/

	const UEdGraphSchema_K2* Schema = CompilerContext.GetSchema();

	// Create a "Make Array" node to compile the list of arguments into an array for the Format function being called
	UK2Node_MakeArray* MakeArrayNode = CompilerContext.SpawnIntermediateNode<UK2Node_MakeArray>(this, SourceGraph);
	MakeArrayNode->AllocateDefaultPins();
	CompilerContext.MessageLog.NotifyIntermediateObjectCreation(MakeArrayNode, this);

	// This is the node that does all the Format work and outputs the message.
	UK2Node_CallFunction* CallFormatFunction = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
	UFunction *FormatFunction = UlxFormatErrorLibrary::StaticClass()->FindFunctionByName(GET_MEMBER_NAME_CHECKED(UlxFormatErrorLibrary, FormatErrorInternal));
	CallFormatFunction->SetFromFunction(FormatFunction);
	CallFormatFunction->AllocateDefaultPins();
	CompilerContext.MessageLog.NotifyIntermediateObjectCreation(CallFormatFunction, this);

	// Connect the output of the "Make Array" pin to the function's "InArgs" pin
	UEdGraphPin* ArrayOut = MakeArrayNode->GetOutputPin();
	ArrayOut->MakeLinkTo(CallFormatFunction->FindPinChecked(TEXT("InArgs")));

	// This will set the "Make Array" node's type, only works if one pin is connected.
	MakeArrayNode->PinConnectionListChanged(ArrayOut);

	// For each argument, we will need to add in a "Make Struct" node.
	for(int32 ArgIdx = 0; ArgIdx < PinNames.Num(); ++ArgIdx)
	{
		FString OriginalName = PinNames[ArgIdx];
		UEdGraphPin* ArgumentPin = FindPin(ArgumentNameAddPrefix(OriginalName), EGPD_Input);
		
		static UScriptStruct* FormatArgumentDataStruct = FindObjectChecked<UScriptStruct>(FindObjectChecked<UPackage>(nullptr, TEXT("/Script/Engine")), TEXT("FormatArgumentData"));

		// Spawn a "Make Struct" node to create the struct needed for formatting the text.
		UK2Node_MakeStruct* MakeFormatArgumentDataStruct = CompilerContext.SpawnIntermediateNode<UK2Node_MakeStruct>(this, SourceGraph);
		MakeFormatArgumentDataStruct->StructType = FormatArgumentDataStruct;
		MakeFormatArgumentDataStruct->AllocateDefaultPins();
		MakeFormatArgumentDataStruct->bMadeAfterOverridePinRemoval = true;
		CompilerContext.MessageLog.NotifyIntermediateObjectCreation(MakeFormatArgumentDataStruct, this);

		// Set the struct's "ArgumentName" pin literal to be the argument pin's name.
		MakeFormatArgumentDataStruct->GetSchema()->TrySetDefaultValue(*MakeFormatArgumentDataStruct->FindPinChecked(GET_MEMBER_NAME_STRING_CHECKED(FFormatArgumentData, ArgumentName)), OriginalName);

		UEdGraphPin* ArgumentTypePin = MakeFormatArgumentDataStruct->FindPinChecked(GET_MEMBER_NAME_STRING_CHECKED(FFormatArgumentData, ArgumentValueType));

		// Move the connection of the argument pin to the correct argument value pin, and also set the correct argument type based on the pin that was hooked up.
		if (ArgumentPin->LinkedTo.Num() > 0)
		{
			const FName& ArgumentPinCategory = ArgumentPin->PinType.PinCategory;

			// Adds an implicit conversion node to this argument based on its function and pin name
			auto AddConversionNode = [&](const FName FuncName, const TCHAR* PinName)
			{
				// Set the default value if there was something passed in, or default to "Text"
				MakeFormatArgumentDataStruct->GetSchema()->TrySetDefaultValue(*ArgumentTypePin, TEXT("Text"));

				// Spawn conversion node based on the given function name
				UK2Node_CallFunction* ToTextFunction = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
				ToTextFunction->SetFromFunction(UKismetTextLibrary::StaticClass()->FindFunctionByName(FuncName));
				ToTextFunction->AllocateDefaultPins();
				CompilerContext.MessageLog.NotifyIntermediateObjectCreation(ToTextFunction, this);

				CompilerContext.MovePinLinksToIntermediate(*ArgumentPin, *ToTextFunction->FindPinChecked(PinName));

				ToTextFunction->FindPinChecked(UEdGraphSchema_K2::PN_ReturnValue)->MakeLinkTo(MakeFormatArgumentDataStruct->FindPinChecked(GET_MEMBER_NAME_STRING_CHECKED(FFormatArgumentData, ArgumentValue)));
			};

			if (ArgumentPinCategory == UEdGraphSchema_K2::PC_Int)
			{
				MakeFormatArgumentDataStruct->GetSchema()->TrySetDefaultValue(*ArgumentTypePin, TEXT("Int"));
				// Need a manual cast from int -> int64
				UK2Node_CallFunction* CallFloatToDoubleFunction = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
				CallFloatToDoubleFunction->SetFromFunction(UKismetMathLibrary::StaticClass()->FindFunctionByName(GET_MEMBER_NAME_CHECKED(UKismetMathLibrary, Conv_IntToInt64)));
				CallFloatToDoubleFunction->AllocateDefaultPins();
				CompilerContext.MessageLog.NotifyIntermediateObjectCreation(CallFloatToDoubleFunction, this);

				// Move the byte output pin to the input pin of the conversion node
				CompilerContext.MovePinLinksToIntermediate(*ArgumentPin, *CallFloatToDoubleFunction->FindPinChecked(TEXT("InInt")));

				// Connect the int output pin to the argument value
				CallFloatToDoubleFunction->FindPinChecked(UEdGraphSchema_K2::PN_ReturnValue)->MakeLinkTo(MakeFormatArgumentDataStruct->FindPinChecked(GET_MEMBER_NAME_STRING_CHECKED(FFormatArgumentData, ArgumentValueInt)));
			}
			else if (ArgumentPinCategory == UEdGraphSchema_K2::PC_Real)
			{
				if (ArgumentPin->PinType.PinSubCategory == UEdGraphSchema_K2::PC_Float)
				{
					MakeFormatArgumentDataStruct->GetSchema()->TrySetDefaultValue(*ArgumentTypePin, TEXT("Float"));
					CompilerContext.MovePinLinksToIntermediate(*ArgumentPin, *MakeFormatArgumentDataStruct->FindPinChecked(GET_MEMBER_NAME_STRING_CHECKED(FFormatArgumentData, ArgumentValueFloat)));
				}
				else if (ArgumentPin->PinType.PinSubCategory == UEdGraphSchema_K2::PC_Double)
				{
					MakeFormatArgumentDataStruct->GetSchema()->TrySetDefaultValue(*ArgumentTypePin, TEXT("Double"));
					CompilerContext.MovePinLinksToIntermediate(*ArgumentPin, *MakeFormatArgumentDataStruct->FindPinChecked(GET_MEMBER_NAME_STRING_CHECKED(FFormatArgumentData, ArgumentValueDouble)));
				}
				else
				{
					check(false);
				}
			}
			else if (ArgumentPinCategory == UEdGraphSchema_K2::PC_Int64)
			{
				MakeFormatArgumentDataStruct->GetSchema()->TrySetDefaultValue(*ArgumentTypePin, TEXT("Int64"));
				CompilerContext.MovePinLinksToIntermediate(*ArgumentPin, *MakeFormatArgumentDataStruct->FindPinChecked(GET_MEMBER_NAME_STRING_CHECKED(FFormatArgumentData, ArgumentValueInt)));
			}
			else if (ArgumentPinCategory == UEdGraphSchema_K2::PC_Text)
			{
				MakeFormatArgumentDataStruct->GetSchema()->TrySetDefaultValue(*ArgumentTypePin, TEXT("Text"));
				CompilerContext.MovePinLinksToIntermediate(*ArgumentPin, *MakeFormatArgumentDataStruct->FindPinChecked(GET_MEMBER_NAME_STRING_CHECKED(FFormatArgumentData, ArgumentValue)));
			}
			else if (ArgumentPinCategory == UEdGraphSchema_K2::PC_Byte && !ArgumentPin->PinType.PinSubCategoryObject.IsValid())
			{
				MakeFormatArgumentDataStruct->GetSchema()->TrySetDefaultValue(*ArgumentTypePin, TEXT("Int"));

				// Need a manual cast from byte -> int
				UK2Node_CallFunction* CallByteToIntFunction = CompilerContext.SpawnIntermediateNode<UK2Node_CallFunction>(this, SourceGraph);
				CallByteToIntFunction->SetFromFunction(UKismetMathLibrary::StaticClass()->FindFunctionByName(GET_MEMBER_NAME_CHECKED(UKismetMathLibrary, Conv_ByteToInt64)));
				CallByteToIntFunction->AllocateDefaultPins();
				CompilerContext.MessageLog.NotifyIntermediateObjectCreation(CallByteToIntFunction, this);

				// Move the byte output pin to the input pin of the conversion node
				CompilerContext.MovePinLinksToIntermediate(*ArgumentPin, *CallByteToIntFunction->FindPinChecked(TEXT("InByte")));

				// Connect the int output pin to the argument value
				CallByteToIntFunction->FindPinChecked(UEdGraphSchema_K2::PN_ReturnValue)->MakeLinkTo(MakeFormatArgumentDataStruct->FindPinChecked(GET_MEMBER_NAME_STRING_CHECKED(FFormatArgumentData, ArgumentValueInt)));
			}
			else if (ArgumentPinCategory == UEdGraphSchema_K2::PC_Byte || ArgumentPinCategory == UEdGraphSchema_K2::PC_Enum)
			{
				static UEnum* TextGenderEnum = FindObjectChecked<UEnum>(nullptr, TEXT("/Script/Engine.ETextGender"), /*ExactClass*/true);
				if (ArgumentPin->PinType.PinSubCategoryObject == TextGenderEnum)
				{
					MakeFormatArgumentDataStruct->GetSchema()->TrySetDefaultValue(*ArgumentTypePin, TEXT("Gender"));
					CompilerContext.MovePinLinksToIntermediate(*ArgumentPin, *MakeFormatArgumentDataStruct->FindPinChecked(GET_MEMBER_NAME_STRING_CHECKED(FFormatArgumentData, ArgumentValueGender)));
				}
			}
			else if (ArgumentPinCategory == UEdGraphSchema_K2::PC_Boolean)
			{
				AddConversionNode(GET_MEMBER_NAME_CHECKED(UKismetTextLibrary, Conv_BoolToText), TEXT("InBool"));
			}
			else if (ArgumentPinCategory == UEdGraphSchema_K2::PC_Name)
			{
				AddConversionNode(GET_MEMBER_NAME_CHECKED(UKismetTextLibrary, Conv_NameToText), TEXT("InName"));
			}
			else if (ArgumentPinCategory == UEdGraphSchema_K2::PC_String)
			{
				AddConversionNode(GET_MEMBER_NAME_CHECKED(UKismetTextLibrary, Conv_StringToText), TEXT("InString"));
			}
			else if (ArgumentPinCategory == UEdGraphSchema_K2::PC_Object)
			{
				AddConversionNode(GET_MEMBER_NAME_CHECKED(UKismetTextLibrary, Conv_ObjectToText), TEXT("InObj"));
			}
			else
			{
				// Unexpected pin type!
				CompilerContext.MessageLog.Error(*FText::Format(LOCTEXT("Error_UnexpectedPinType", "Pin '{0}' has an unexpected type: {1}"), FText::FromString(OriginalName), FText::FromName(ArgumentPinCategory)).ToString());
			}
		}
		else
		{
			// No connected pin - just default to an empty text
			MakeFormatArgumentDataStruct->GetSchema()->TrySetDefaultValue(*ArgumentTypePin, TEXT("Text"));
			MakeFormatArgumentDataStruct->GetSchema()->TrySetDefaultText(*MakeFormatArgumentDataStruct->FindPinChecked(GET_MEMBER_NAME_STRING_CHECKED(FFormatArgumentData, ArgumentValue)), FText::GetEmpty());
		}

		// The "Make Array" node already has one pin available, so don't create one for ArgIdx == 0
		if(ArgIdx > 0)
		{
			MakeArrayNode->AddInputPin();
		}

		// Find the input pin on the "Make Array" node by index.
		const FString PinName = FString::Printf(TEXT("[%d]"), ArgIdx);
		UEdGraphPin* InputPin = MakeArrayNode->FindPinChecked(PinName);

		// Find the output for the pin's "Make Struct" node and link it to the corresponding pin on the "Make Array" node.
		FindOutputStructPinChecked(MakeFormatArgumentDataStruct)->MakeLinkTo(InputPin);
	}

	// Move connection of "Format" pin to the call function's "InPattern" pin
	CompilerContext.MovePinLinksToIntermediate(*FindPinChecked(FormatPinName), *CallFormatFunction->FindPinChecked(TEXT("InPattern")));
	CompilerContext.MovePinLinksToIntermediate(*FindPinChecked(VerbosityPinName), *CallFormatFunction->FindPinChecked(TEXT("Verbosity")));
	CompilerContext.MovePinLinksToIntermediate(*FindPinChecked(DisplayDurationPinName), *CallFormatFunction->FindPinChecked(TEXT("DisplayDuration")));
	
	// Link up the Exec pins.
	CompilerContext.MovePinLinksToIntermediate(*GetExecPin(), *CallFormatFunction->GetExecPin());
	CompilerContext.MovePinLinksToIntermediate(*GetThenPin(), *CallFormatFunction->GetThenPin());
	
	BreakAllNodeLinks();
}


UK2Node::ERedirectType UK2Node_FormatError::DoPinsMatchForReconstruction(const UEdGraphPin* NewPin, int32 NewPinIndex, const UEdGraphPin* OldPin, int32 OldPinIndex) const
{
	ERedirectType RedirectType = ERedirectType_None;

	// if the pin names do match
	if (NewPin->PinName.ToString().Equals(OldPin->PinName.ToString(), ESearchCase::CaseSensitive))
	{
		// Make sure we're not dealing with a menu node
		UEdGraph* OuterGraph = GetGraph();
		if( OuterGraph && OuterGraph->Schema )
		{
			const UEdGraphSchema_K2* K2Schema = Cast<const UEdGraphSchema_K2>(GetSchema());
			if( !K2Schema || K2Schema->IsSelfPin(*NewPin) || K2Schema->ArePinTypesCompatible(OldPin->PinType, NewPin->PinType) )
			{
				RedirectType = ERedirectType_Name;
			}
			else
			{
				RedirectType = ERedirectType_None;
			}
		}
	}
	else
	{
		// try looking for a redirect if it's a K2 node
		if (UK2Node* Node = Cast<UK2Node>(NewPin->GetOwningNode()))
		{	
			// if you don't have matching pin, now check if there is any redirect param set
			TArray<FString> OldPinNames;
			GetRedirectPinNames(*OldPin, OldPinNames);

			FName NewPinName;
			RedirectType = ShouldRedirectParam(OldPinNames, /*out*/ NewPinName, Node);

			// make sure they match
			if ((RedirectType != ERedirectType_None) && (!NewPin->PinName.ToString().Equals(NewPinName.ToString(), ESearchCase::CaseSensitive)))
			{
				RedirectType = ERedirectType_None;
			}
		}
	}

	return RedirectType;
}

bool UK2Node_FormatError::IsConnectionDisallowed(const UEdGraphPin* MyPin, const UEdGraphPin* OtherPin, FString& OutReason) const
{
	// The following pins cannot be connected.  They are meant to be hardwired constants.
	if (IsFormatPin(MyPin))
	{
		OutReason = LOCTEXT("Error_FormatStringMustBeHardwired", "Format string must be a hardwired constant.").ToString();
		return true;
	}

	// Argument input pins may only be connected to Byte, Integer, Float, Text, and ETextGender pins...
	if (IsArgumentPin(MyPin))
	{
		const UEdGraphSchema_K2* K2Schema = Cast<const UEdGraphSchema_K2>(GetSchema());
		const FName& OtherPinCategory = OtherPin->PinType.PinCategory;

		bool bIsValidType = false;
		if (OtherPinCategory == UEdGraphSchema_K2::PC_Int || OtherPinCategory == UEdGraphSchema_K2::PC_Real || OtherPinCategory == UEdGraphSchema_K2::PC_Text ||
			(OtherPinCategory == UEdGraphSchema_K2::PC_Byte && !OtherPin->PinType.PinSubCategoryObject.IsValid()) ||
			OtherPinCategory == UEdGraphSchema_K2::PC_Boolean || OtherPinCategory == UEdGraphSchema_K2::PC_String || OtherPinCategory == UEdGraphSchema_K2::PC_Name || OtherPinCategory == UEdGraphSchema_K2::PC_Object ||
			OtherPinCategory == UEdGraphSchema_K2::PC_Wildcard || OtherPinCategory == UEdGraphSchema_K2::PC_Int64)
        {
			bIsValidType = true;
		}
		else if (OtherPinCategory == UEdGraphSchema_K2::PC_Byte || OtherPinCategory == UEdGraphSchema_K2::PC_Enum)
		{
			static UEnum* TextGenderEnum = FindObjectChecked<UEnum>(nullptr, TEXT("/Script/Engine.ETextGender"), /*ExactClass*/true);
			if (OtherPin->PinType.PinSubCategoryObject == TextGenderEnum)
			{
				bIsValidType = true;
			}
		}

		if (!bIsValidType)
		{
			OutReason = LOCTEXT("Error_InvalidArgumentType", "Format arguments may only be Byte, Integer, Int64, Float, Double, Text, String, Name, Boolean, Object, Wildcard or ETextGender.").ToString();
			return true;
		}
	}

	return Super::IsConnectionDisallowed(MyPin, OtherPin, OutReason);
}


void UK2Node_FormatError::GetMenuActions(FBlueprintActionDatabaseRegistrar& ActionRegistrar) const
{
	// actions get registered under specific object-keys; the idea is that 
	// actions might have to be updated (or deleted) if their object-key is  
	// mutated (or removed)... here we use the node's class (so if the node 
	// type disappears, then the action should go with it)
	UClass* ActionKey = GetClass();
	// to keep from needlessly instantiating a UBlueprintNodeSpawner, first   
	// check to make sure that the registrar is looking for actions of this type
	// (could be regenerating actions for a specific asset, and therefore the 
	// registrar would only accept actions corresponding to that asset)
	if (ActionRegistrar.IsOpenForRegistration(ActionKey))
	{
		UBlueprintNodeSpawner* NodeSpawner = UBlueprintNodeSpawner::Create(GetClass());
		check(NodeSpawner != nullptr);

		ActionRegistrar.AddBlueprintAction(ActionKey, NodeSpawner);
	}
}

FText UK2Node_FormatError::GetMenuCategory() const
{
	return FEditorCategoryUtils::GetCommonCategory(FCommonEditorCategory::Text);
}

void UlxFormatErrorLibrary::FormatErrorInternal(UObject *Context, ElxLogVerbosity Verbosity, ElxDisplayDuration DisplayDuration, FText InPattern, TArray<FFormatArgumentData> InArgs)
{
	// Generate the formatted string.
	//
	FText Message = FTextFormatter::Format(MoveTemp(InPattern), MoveTemp(InArgs), false, false);
	FString MessageString = Message.ToString();
	
	// Convert the DisplayDuration enum into a number of seconds.
	//
	int Seconds = int(DisplayDuration);
	if (Seconds > 100) Seconds = (Seconds - 100) * 60;

	// Choose a color appropriate to the verbosity level.
	//
	FLinearColor Color;
	switch (Verbosity) {
		case ElxLogVerbosity::Fatal   : Color = FLinearColor(1.0, 0.6, 0.6); break;
		case ElxLogVerbosity::Error   : Color = FLinearColor(1.0, 0.6, 0.6); break;
		case ElxLogVerbosity::Warning : Color = FLinearColor(0.9, 0.9, 0.6); break;
		default: Color = FLinearColor(0.8, 0.8, 0.8); break;
	}

	// Convert verbosity to an internal value.
	//
	ELogVerbosity::Type VerbosityValue;
	switch (Verbosity) {
		case ElxLogVerbosity::Error:		VerbosityValue = ELogVerbosity::Error; 			break;
		case ElxLogVerbosity::Warning:		VerbosityValue = ELogVerbosity::Warning; 		break;
		case ElxLogVerbosity::Display:		VerbosityValue = ELogVerbosity::Display; 		break;
		case ElxLogVerbosity::Log:			VerbosityValue = ELogVerbosity::Log; 			break;
		case ElxLogVerbosity::Verbose:		VerbosityValue = ELogVerbosity::Verbose; 		break;
		case ElxLogVerbosity::VeryVerbose:	VerbosityValue = ELogVerbosity::VeryVerbose; 	break;
		case ElxLogVerbosity::Fatal:		VerbosityValue = ELogVerbosity::Fatal; 			break;
	}

	// Get the blueprint name.
	//
	// Normally, the log function expects you to pass in a filename, and a log
	// category name.  We use the blueprint name for both.
	//
	// Using the blueprint name as a log category name is not technically
	// correct.  However, there is no correct way to create log categories
	// from inside of blueprints.  Doing it this way at least produces a reasonable
	// message inside the log.  What doesn't work correctly is the log message
	// suppression system.  Ie, console commands like 'log <category> verbose'
	// don't have any effect here.  The design of the log message suppression
	// system is such that there just is no reasonable way to hook into it from
	// inside of blueprints.
	//
	FString BlueprintNameString = Context->GetClass()->GetName();
	auto BlueprintNameAnsi = StringCast<ANSICHAR>(*BlueprintNameString);
	FLogCategoryName BlueprintNameLogCategory(Context->GetClass()->GetFName());


	// Output to Screen, if requested.
	//
	if (Seconds != 0)
	{
		UKismetSystemLibrary::PrintText(NULL, Message, true, false, Color, Seconds, NAME_None);
	}

	// Output to Log
	//
	if (VerbosityValue <= ELogVerbosity::COMPILED_IN_MINIMUM_VERBOSITY)
	{
		FMsg::Logf(BlueprintNameAnsi.Get(), 0, BlueprintNameLogCategory, VerbosityValue, TEXT("%s"), *MessageString);
	}
}


#undef LOCTEXT_NAMESPACE