// Copyright IHY. Universal Bars plugin.
// Global access point for the active HUD. From any Blueprint/C++:
//   Get World Subsystem -> UniversalBarsSubsystem -> Set Health (0.5)
// No widget reference needed. The HUD widget registers itself on construct.
#pragma once

#include "CoreMinimal.h"
#include "Subsystems/WorldSubsystem.h"
#include "UniversalBarsSubsystem.generated.h"

class UUniversalHUDWidget;
class APlayerController;

UCLASS()
class UNIVERSALBARS_API UUniversalBarsSubsystem : public UWorldSubsystem
{
	GENERATED_BODY()

public:
	// One-call accessor from any object with a world.
	UFUNCTION(BlueprintPure, Category="UniversalBars", meta=(WorldContext="WorldContextObject"))
	static UUniversalBarsSubsystem* Get(const UObject* WorldContextObject);

	// Spawn a HUD widget, add it to the viewport, and make it the active HUD.
	UFUNCTION(BlueprintCallable, Category="UniversalBars")
	UUniversalHUDWidget* CreateHUD(APlayerController* Owner, TSubclassOf<UUniversalHUDWidget> HUDClass, int32 ZOrder = 0);

	UFUNCTION(BlueprintCallable, Category="UniversalBars")
	void RegisterHUD(UUniversalHUDWidget* InHUD);

	UFUNCTION(BlueprintCallable, Category="UniversalBars")
	void UnregisterHUD(UUniversalHUDWidget* InHUD);

	UFUNCTION(BlueprintPure, Category="UniversalBars")
	UUniversalHUDWidget* GetHUD() const { return HUD.Get(); }

	// ===== global forwarders (animated) =====
	UFUNCTION(BlueprintCallable, Category="UniversalBars") void SetHealth(float Percent);
	UFUNCTION(BlueprintCallable, Category="UniversalBars") void SetStamina(float Percent);
	UFUNCTION(BlueprintCallable, Category="UniversalBars") void SetShield(float Percent);
	UFUNCTION(BlueprintCallable, Category="UniversalBars") void SetHunger(float Amount);
	UFUNCTION(BlueprintCallable, Category="UniversalBars") void SetWeight(float Amount);
	UFUNCTION(BlueprintCallable, Category="UniversalBars") void SetCold(float Amount);
	UFUNCTION(BlueprintCallable, Category="UniversalBars") void DamageHealth(float Delta);
	UFUNCTION(BlueprintCallable, Category="UniversalBars") void HealHealth(float Delta);

private:
	UPROPERTY()
	TWeakObjectPtr<UUniversalHUDWidget> HUD;
};