#include "ZMMOHudHpSpWidget.h"

#include "Components/ProgressBar.h"
#include "Components/TextBlock.h"
#include "Internationalization/Text.h"
#include "ZMMOAttributeComponent.h"

void UZMMOHudHpSpWidget::BindToAttributeComponent(UZMMOAttributeComponent* InComponent)
{
	if (UZMMOAttributeComponent* Old = BoundComponent.Get())
	{
		Old->OnAttributesChanged.RemoveDynamic(this, &UZMMOHudHpSpWidget::HandleAttributesChanged);
		Old->OnHpSpChanged.RemoveDynamic(this, &UZMMOHudHpSpWidget::HandleHpSpChanged);
	}

	BoundComponent = InComponent;

	if (InComponent)
	{
		InComponent->OnAttributesChanged.AddDynamic(this, &UZMMOHudHpSpWidget::HandleAttributesChanged);
		InComponent->OnHpSpChanged.AddDynamic(this, &UZMMOHudHpSpWidget::HandleHpSpChanged);
		// Refresh imediato — caso o primeiro snapshot tenha chegado antes
		// do widget existir.
		HandleAttributesChanged(InComponent->GetSnapshot());
	}
}

void UZMMOHudHpSpWidget::NativeDestruct()
{
	if (UZMMOAttributeComponent* Old = BoundComponent.Get())
	{
		Old->OnAttributesChanged.RemoveDynamic(this, &UZMMOHudHpSpWidget::HandleAttributesChanged);
		Old->OnHpSpChanged.RemoveDynamic(this, &UZMMOHudHpSpWidget::HandleHpSpChanged);
	}
	BoundComponent.Reset();
	Super::NativeDestruct();
}

void UZMMOHudHpSpWidget::HandleAttributesChanged(const FZMMOAttributesSnapshot& Snapshot)
{
	OnSnapshotApplied(Snapshot);
}

void UZMMOHudHpSpWidget::HandleHpSpChanged(int32 Hp, int32 Sp)
{
	OnHpSpDelta(Hp, Sp);
}

void UZMMOHudHpSpWidget::OnSnapshotApplied_Implementation(const FZMMOAttributesSnapshot& Snapshot)
{
	if (HpBar)
	{
		HpBar->SetPercent(Snapshot.MaxHp > 0
			? static_cast<float>(Snapshot.Hp) / static_cast<float>(Snapshot.MaxHp) : 0.f);
	}
	if (SpBar)
	{
		SpBar->SetPercent(Snapshot.MaxSp > 0
			? static_cast<float>(Snapshot.Sp) / static_cast<float>(Snapshot.MaxSp) : 0.f);
	}
	if (HpText)
	{
		HpText->SetText(FText::FromString(FString::Printf(TEXT("%d / %d"), Snapshot.Hp, Snapshot.MaxHp)));
	}
	if (SpText)
	{
		SpText->SetText(FText::FromString(FString::Printf(TEXT("%d / %d"), Snapshot.Sp, Snapshot.MaxSp)));
	}
	if (LevelText)
	{
		LevelText->SetText(FText::FromString(FString::Printf(TEXT("Lv %d"), Snapshot.BaseLevel)));
	}
}

void UZMMOHudHpSpWidget::OnHpSpDelta_Implementation(int32 Hp, int32 Sp)
{
	// Atualiza apenas os campos vitais (evita refresh redundante de
	// stats/level que nao mudaram).
	if (UZMMOAttributeComponent* Comp = BoundComponent.Get())
	{
		const FZMMOAttributesSnapshot& Snap = Comp->GetSnapshot();
		if (HpBar)
		{
			HpBar->SetPercent(Snap.MaxHp > 0
				? static_cast<float>(Hp) / static_cast<float>(Snap.MaxHp) : 0.f);
		}
		if (SpBar)
		{
			SpBar->SetPercent(Snap.MaxSp > 0
				? static_cast<float>(Sp) / static_cast<float>(Snap.MaxSp) : 0.f);
		}
		if (HpText)
		{
			HpText->SetText(FText::FromString(FString::Printf(TEXT("%d / %d"), Hp, Snap.MaxHp)));
		}
		if (SpText)
		{
			SpText->SetText(FText::FromString(FString::Printf(TEXT("%d / %d"), Sp, Snap.MaxSp)));
		}
	}
}