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

#pragma once

#include "GameplayInteractionsTypes.h"
#include "GameplayInteractionSendSlotEventTask.generated.h"

enum class EDataValidationResult : uint8;

class USmartObjectSubsystem;

USTRUCT()
struct FGameplayInteractionSendSlotEventTaskInstanceData
{
	GENERATED_BODY()

	/** The slot to send the event to. */
	UPROPERTY(EditAnywhere, Category="Input")
	FSmartObjectSlotHandle TargetSlot;
};

/**
 * Task to send event to a specified Smart Object Slot based on the tasks lifetime. 
 */
USTRUCT(meta = (DisplayName = "Send Slot Event", Category="Gameplay Interactions|Smart Object"))
struct FGameplayInteractionSendSlotEventTask : public FGameplayInteractionStateTreeTask
{
	GENERATED_BODY()

	FGameplayInteractionSendSlotEventTask();
	
	using FInstanceDataType = FGameplayInteractionSendSlotEventTaskInstanceData;

protected:
	virtual const UStruct* GetInstanceDataType() const override { return FInstanceDataType::StaticStruct(); }

	virtual bool Link(FStateTreeLinker& Linker) override;
	virtual EStateTreeRunStatus EnterState(FStateTreeExecutionContext& Context, const FStateTreeTransitionResult& Transition) const override;
	virtual void ExitState(FStateTreeExecutionContext& Context, const FStateTreeTransitionResult& Transition) const override;
#if WITH_EDITOR
	virtual EDataValidationResult Compile(UE::StateTree::ICompileNodeContext& Context) override;
	virtual FText GetDescription(const FGuid& ID, FStateTreeDataView InstanceDataView, const IStateTreeBindingLookup& BindingLookup, EStateTreeNodeFormatting Formatting = EStateTreeNodeFormatting::Text) const override;
	virtual FName GetIconName() const override
	{
		return FName("StateTreeEditorStyle|Node.Event");
	}
	virtual FColor GetIconColor() const override
	{
		return UE::StateTree::Colors::Blue;
	}
#endif
	
	/** Tag of the event to send. */
	UPROPERTY(EditAnywhere, Category = Parameter)
	FGameplayTag EventTag;

	/** Payload of the event to send. */
	UPROPERTY(EditAnywhere, Category = Parameter)
	FInstancedStruct Payload;

	/** Specifies under which conditions to send the event. */
	UPROPERTY(EditAnywhere, Category = Parameter)
	EGameplayInteractionTaskTrigger Trigger = EGameplayInteractionTaskTrigger::OnEnterState;

	/** If true, handle external State Tree stop as a failure. */
	UPROPERTY(EditAnywhere, Category = "Parameter")
	bool bHandleExternalStopAsFailure = true;

	/** If false, will not trigger on state reselection. */
	UPROPERTY(EditAnywhere, Category = Parameter)
	bool bShouldTriggerOnReselect = true;

	/** Handle to retrieve USmartObjectSubsystem. */
	TStateTreeExternalDataHandle<USmartObjectSubsystem> SmartObjectSubsystemHandle;
};