// Copyright ExByte Studios. Item Interaction Ecosystem.

#pragma once

#include "CoreMinimal.h"
#include "Components/ActorComponent.h"
#include "ItemInteractionInterfaces.h"
#include "FuelTankComponent.generated.h"

DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FOnFuelChanged, float, NewFuel);

/**
 * A fuel reservoir on a world object (generator, vehicle) that accepts fuel poured
 * from a held canister (section 15, 31.4). Implements IItemUseTarget for the
 * "TransferFuel" result verb.
 */
UCLASS(ClassGroup = (Interaction), meta = (BlueprintSpawnableComponent))
class ITEMWORLD_API UFuelTankComponent : public UActorComponent, public IItemUseTarget
{
	GENERATED_BODY()

public:
	UFuelTankComponent();

	virtual void GetLifetimeReplicatedProps(TArray<FLifetimeProperty>& OutLifetimeProps) const override;

	UPROPERTY(EditAnywhere, BlueprintReadOnly, Category = "Fuel")
	float MaxFuel = 40.f;

	/** Max litres poured per single use action. */
	UPROPERTY(EditAnywhere, BlueprintReadOnly, Category = "Fuel")
	float PourAmount = 10.f;

	UPROPERTY(ReplicatedUsing = OnRep_Fuel, BlueprintReadOnly, Category = "Fuel")
	float CurrentFuel = 0.f;

	UPROPERTY(BlueprintAssignable, Category = "Fuel")
	FOnFuelChanged OnFuelChanged;

	//~ IItemUseTarget
	virtual bool ReceiveHeldUse(FName ResultVerb, FItemInstanceData& HeldItem, AActor* Instigator) override;

protected:
	UFUNCTION()
	void OnRep_Fuel();

	bool HasAuthority() const;
};