#pragma once

#include "CoreMinimal.h"
#include "Blueprint/UserWidget.h"
#include "EnhancedInputComponent.h"
#include "LuprexUserWidget.generated.h"

UCLASS(BlueprintType, Blueprintable)
class INTEGRATION_API UlxUserWidget : public UUserWidget
{
	GENERATED_BODY()

public:
	using EventBinding = TUniquePtr<FEnhancedInputActionEventBinding>;

	UlxUserWidget(const FObjectInitializer& ObjectInitializer);

	virtual void NativeOnInitialized() override;

	// Clone every enhanced-input action binding currently on InputComponent
	// into SavedEnhancedActionEventBindings, so bindings can later be removed
	// from the component and reinstated without losing their delegates.
	void BackupInputComponent();

	// Remove every live event binding whose action is InputAction.
	// No-op if there are none, or if InputComponent isn't enhanced.
	UFUNCTION(BlueprintCallable, Category="Luprex|Widget Enhanced Input")
	void DisableEventBinding(const UInputAction* InputAction);

	// Replace any live bindings for InputAction with fresh clones of every
	// saved binding for that action. Leaves the backup array intact so this
	// can be called repeatedly.
	UFUNCTION(BlueprintCallable, Category="Luprex|Widget Enhanced Input")
	void RestoreInputBinding(const UInputAction* InputAction);

	// Install live bindings on From that, when fired, dispatch through a
	// clone of each saved binding for To. Clears any pre-existing live
	// bindings on From first. Backup array is untouched.
	UFUNCTION(BlueprintCallable, Category="Luprex|Widget Enhanced Input")
	void RedirectInputAction(const UInputAction* From, const UInputAction* To);

	// Cloned bindings captured from InputComponent after construction.
	TArray<EventBinding> SavedEnhancedActionEventBindings;

private:
	// Strip the synthetic const off UEnhancedInputComponent::GetActionEventBindings
	// to get direct mutable access to the protected array. Well-defined because
	// the underlying object is not const; only the getter's return type is.
	static TArray<EventBinding>& GetMutableActionEventBindings(UEnhancedInputComponent* EIC);
};