// Reglages par onglets. Voir LPSettingsSubsystem.h.

#include "LPSettingsSubsystem.h"

#include "Blueprint/UserWidget.h"
#include "Components/Button.h"
#include "Components/ButtonSlot.h"
#include "Components/CanvasPanel.h"
#include "Components/CanvasPanelSlot.h"
#include "Components/CheckBox.h"
#include "Components/HorizontalBox.h"
#include "Components/HorizontalBoxSlot.h"
#include "Components/Image.h"
#include "Components/NativeWidgetHost.h"
#include "Components/Overlay.h"
#include "Components/OverlaySlot.h"
#include "Components/ScrollBox.h"
#include "Components/SizeBox.h"
#include "Components/SpinBox.h"
#include "Components/TextBlock.h"
#include "Components/PanelWidget.h"
#include "Components/VerticalBox.h"
#include "Components/VerticalBoxSlot.h"
#include "Engine/GameInstance.h"
#include "Engine/Texture2D.h"
#include "LPKeyboardSubsystem.h"
#include "LifePlay.h"
#include "Styling/CoreStyle.h"
#include "Styling/SlateTypes.h"
#include "UObject/TextProperty.h"

namespace LPSettingsUi
{
	const TCHAR* TabNames[] = {
		TEXT("General"), TEXT("Audio"), TEXT("Video"), TEXT("Keyboard"), TEXT("Lewd"), TEXT("Misc")
	};
	constexpr int32 TabGeneral = 0;
	constexpr int32 TabAudio = 1;
	constexpr int32 TabVideo = 2;
	constexpr int32 TabKeyboard = 3;
	constexpr int32 TabLewd = 4;
	constexpr int32 TabMisc = 5;
	constexpr int32 TabAlways = -1;
	constexpr int32 TabHidden = -2;

	FString VolumeLabel(const FString& Text)
	{
		if (Text.Equals(TEXT("Volume - Sex Moans"), ESearchCase::IgnoreCase) || Text.Equals(TEXT("Volume - Sex Moan"), ESearchCase::IgnoreCase))
		{
			return TEXT("Volume - SFX");
		}
		if (Text.Equals(TEXT("Volume - Sex"), ESearchCase::IgnoreCase))
		{
			return TEXT("Volume - Dialogue");
		}
		return Text;
	}

	void RenameVolumes(UWidget* Widget)
	{
		if (!Widget)
		{
			return;
		}
		if (FTextProperty* Setting = CastField<FTextProperty>(Widget->GetClass()->FindPropertyByName(TEXT("SettingText"))))
		{
			const FString Next = VolumeLabel(Setting->GetPropertyValue_InContainer(Widget).ToString());
			if (Next != Setting->GetPropertyValue_InContainer(Widget).ToString())
			{
				Setting->SetPropertyValue_InContainer(Widget, FText::FromString(Next));
			}
		}
		if (UTextBlock* Block = Cast<UTextBlock>(Widget))
		{
			const FString Next = VolumeLabel(Block->GetText().ToString());
			if (Next != Block->GetText().ToString())
			{
				Block->SetText(FText::FromString(Next));
			}
		}
		if (UUserWidget* User = Cast<UUserWidget>(Widget))
		{
			RenameVolumes(User->GetRootWidget());
		}
		if (UPanelWidget* Panel = Cast<UPanelWidget>(Widget))
		{
			for (int32 Index = 0; Index < Panel->GetChildrenCount(); ++Index)
			{
				RenameVolumes(Panel->GetChildAt(Index));
			}
		}
	}

	bool IsOpen(const UWidget* Widget)
	{
		if (!Widget)
		{
			return false;
		}
		const ESlateVisibility Visibility = Widget->GetVisibility();
		return Visibility != ESlateVisibility::Collapsed && Visibility != ESlateVisibility::Hidden;
	}

	// Libelle visible seulement : les infobulles provoquent des faux positifs
	// (ex. "on screen" → Video, "prefer quality" → Video pour NewAnimationsOnly).
	FString RowText(const UWidget* Widget)
	{
		FString Text;
		if (!Widget)
		{
			return Text;
		}
		if (const FTextProperty* Setting = CastField<FTextProperty>(Widget->GetClass()->FindPropertyByName(TEXT("SettingText"))))
		{
			Text += Setting->GetPropertyValue_InContainer(Widget).ToString();
		}
		TArray<UWidget*> Pending;
		Pending.Add(const_cast<UWidget*>(Widget));
		while (Pending.Num() > 0)
		{
			UWidget* Current = Pending.Pop(EAllowShrinking::No);
			if (const UTextBlock* Block = Cast<UTextBlock>(Current))
			{
				Text += TEXT(" ") + Block->GetText().ToString();
			}
			if (const UUserWidget* User = Cast<UUserWidget>(Current))
			{
				if (UWidget* Root = User->GetRootWidget())
				{
					Pending.Add(Root);
				}
			}
			if (const UPanelWidget* Panel = Cast<UPanelWidget>(Current))
			{
				for (int32 Index = 0; Index < Panel->GetChildrenCount(); ++Index)
				{
					Pending.Add(Panel->GetChildAt(Index));
				}
			}
		}
		return Text;
	}

	int32 CategoryOf(const UWidget* Widget)
	{
		if (Widget && Widget->GetFName() == TEXT("BackButton"))
		{
			return TabAlways;
		}
		// Reglages qualite video remplaces par les lignes LPVideo* (LPVideoQualitySubsystem).
		if (Widget && (Widget->GetFName() == TEXT("ShadowQuality")
			|| Widget->GetFName() == TEXT("PostProcessQuality")
			|| Widget->GetFName() == TEXT("PostProcessAAQuality")))
		{
			return TabHidden;
		}
		// Noms stables : evite les collisions de mots-cles sur le libelle.
		if (Widget)
		{
			const FName Name = Widget->GetFName();
			if (Name == TEXT("NewAnimationsOnly"))
			{
				return TabGeneral;
			}
			if (Name == TEXT("ShowFPS") || Name == TEXT("ScreenPercentage") || Name == TEXT("FullscreenButton")
				|| Name == TEXT("ToonShading") || Name == TEXT("Censore") || Name == TEXT("CPUSkinning")
				|| Name == TEXT("DisableFurEffect"))
			{
				return TabVideo;
			}
		}
		if (Widget && (Widget->GetName().StartsWith(TEXT("LPColor")) || Widget->GetName().StartsWith(TEXT("LPVideo"))))
		{
			return TabVideo;
		}
		const FString Text = RowText(Widget).ToLower();
		if (Text.Contains(TEXT("volume")) || Text.Contains(TEXT("audio")) || Text.Contains(TEXT("sound")) || Text.Contains(TEXT("music")))
		{
			return TabAudio;
		}
		if (Text.Contains(TEXT("fps")) || Text.Contains(TEXT("screen percentage")) || Text.Contains(TEXT("shadow"))
			|| Text.Contains(TEXT("fullscreen")) || Text.Contains(TEXT("window")) || Text.Contains(TEXT("toon"))
			|| Text.Contains(TEXT("depth of field")) || Text.Contains(TEXT("censor")) || Text.Contains(TEXT("morph"))
			|| Text.Contains(TEXT("dog")) || Text.Contains(TEXT("jiggle")) || Text.Contains(TEXT("resolution"))
			|| Text.Contains(TEXT("vsync")) || Text.Contains(TEXT("brightness"))
			|| (Text.Contains(TEXT("quality")) && (Text.Contains(TEXT("shadow")) || Text.Contains(TEXT("aa "))
				|| Text.Contains(TEXT("anti-alias")) || Text.Contains(TEXT("post process")) || Text.Contains(TEXT("pp "))
				|| Text.Contains(TEXT("overall")) || Text.Contains(TEXT("texture")) || Text.Contains(TEXT("effect")))))
		{
			return TabVideo;
		}
		if (Text.Contains(TEXT("sex")) || Text.Contains(TEXT("condom")) || Text.Contains(TEXT("squirt")) || Text.Contains(TEXT("pregnan"))
			|| Text.Contains(TEXT("underwear")) || Text.Contains(TEXT("orientation")) || Text.Contains(TEXT("trans")) || Text.Contains(TEXT("relationship"))
			|| Text.Contains(TEXT("moan")) || Text.Contains(TEXT("lewd")))
		{
			return TabLewd;
		}
		if (Text.Contains(TEXT("difficult")) || Text.Contains(TEXT("clock")) || Text.Contains(TEXT("camera")) || Text.Contains(TEXT("scene"))
			|| Text.Contains(TEXT("pause")) || Text.Contains(TEXT("timeout")) || Text.Contains(TEXT("tutorial")) || Text.Contains(TEXT("marker"))
			|| Text.Contains(TEXT("building")) || Text.Contains(TEXT("animation")) || Text.Contains(TEXT("action filter")) || Text.Contains(TEXT("dye"))
			|| Text.Contains(TEXT("stat")) || Text.Contains(TEXT("child")) || Text.Contains(TEXT("redress")))
		{
			return TabGeneral;
		}
		return TabMisc;
	}

	void WireMainMenuGI(UUserWidget* Menu, UGameInstance* GI)
	{
		if (!Menu || !GI)
		{
			return;
		}
		FObjectPropertyBase* Prop = CastField<FObjectPropertyBase>(Menu->GetClass()->FindPropertyByName(TEXT("GI")));
		if (!Prop || Prop->GetObjectPropertyValue_InContainer(Menu))
		{
			return;
		}
		if (!GI->IsA(Prop->PropertyClass))
		{
			return;
		}
		Prop->SetObjectPropertyValue_InContainer(Menu, GI);
		UE_LOG(LogLifePlay, Display, TEXT("Reglages : MainMenu.GI rattache (evite les spinbox / cases None sur l'ecran titre)"));
	}

	void CollectCheckBoxes(UWidget* Widget, TArray<UCheckBox*>& Out)
	{
		if (!Widget)
		{
			return;
		}
		if (UCheckBox* Box = Cast<UCheckBox>(Widget))
		{
			Out.Add(Box);
			return;
		}
		if (UUserWidget* User = Cast<UUserWidget>(Widget))
		{
			CollectCheckBoxes(User->GetRootWidget(), Out);
		}
		if (UPanelWidget* Panel = Cast<UPanelWidget>(Widget))
		{
			for (int32 Index = 0; Index < Panel->GetChildrenCount(); ++Index)
			{
				CollectCheckBoxes(Panel->GetChildAt(Index), Out);
			}
		}
	}

	void CollectSpinBoxes(UWidget* Widget, TArray<USpinBox*>& Out)
	{
		if (!Widget)
		{
			return;
		}
		if (USpinBox* Box = Cast<USpinBox>(Widget))
		{
			Out.Add(Box);
			return;
		}
		if (UUserWidget* User = Cast<UUserWidget>(Widget))
		{
			CollectSpinBoxes(User->GetRootWidget(), Out);
		}
		if (UPanelWidget* Panel = Cast<UPanelWidget>(Widget))
		{
			for (int32 Index = 0; Index < Panel->GetChildrenCount(); ++Index)
			{
				CollectSpinBoxes(Panel->GetChildAt(Index), Out);
			}
		}
	}

	void TintBrush(FSlateBrush& Brush, const FLinearColor& Tint)
	{
		Brush.TintColor = FSlateColor(Tint);
	}

	// Cases et spinboxes BP : style Slate clair → illisible sur fond flou clair.
	// Le curseur Contrast du color grading les revelait sans corriger le style.
	void HardenSettingsControls(UScrollBox* Scroll)
	{
		if (!Scroll)
		{
			return;
		}

		FCheckBoxStyle CheckStyle = FCoreStyle::Get().GetWidgetStyle<FCheckBoxStyle>("Checkbox");
		const FLinearColor Unchecked(0.08f, 0.08f, 0.08f, 1.f);
		const FLinearColor UncheckedHover(0.18f, 0.18f, 0.18f, 1.f);
		const FLinearColor Checked(0.12f, 0.42f, 0.95f, 1.f);
		const FLinearColor CheckedHover(0.2f, 0.5f, 1.f, 1.f);
		TintBrush(CheckStyle.UncheckedImage, Unchecked);
		TintBrush(CheckStyle.UncheckedHoveredImage, UncheckedHover);
		TintBrush(CheckStyle.UncheckedPressedImage, Unchecked);
		TintBrush(CheckStyle.CheckedImage, Checked);
		TintBrush(CheckStyle.CheckedHoveredImage, CheckedHover);
		TintBrush(CheckStyle.CheckedPressedImage, Checked);
		TintBrush(CheckStyle.UndeterminedImage, Unchecked);
		TintBrush(CheckStyle.UndeterminedHoveredImage, UncheckedHover);
		TintBrush(CheckStyle.UndeterminedPressedImage, Unchecked);
		CheckStyle.BorderBackgroundColor = FSlateColor(FLinearColor(1.f, 1.f, 1.f, 1.f));
		CheckStyle.ForegroundColor = FSlateColor(FLinearColor(1.f, 1.f, 1.f, 1.f));

		FSpinBoxStyle SpinStyle = FCoreStyle::Get().GetWidgetStyle<FSpinBoxStyle>("SpinBox");
		const FLinearColor SpinBg(0.06f, 0.06f, 0.06f, 0.95f);
		const FLinearColor SpinBgHover(0.12f, 0.12f, 0.12f, 0.98f);
		const FLinearColor SpinBgActive(0.16f, 0.16f, 0.16f, 1.f);
		TintBrush(SpinStyle.BackgroundBrush, SpinBg);
		TintBrush(SpinStyle.HoveredBackgroundBrush, SpinBgHover);
		TintBrush(SpinStyle.ActiveBackgroundBrush, SpinBgActive);
		TintBrush(SpinStyle.ActiveFillBrush, FLinearColor(0.2f, 0.45f, 0.9f, 0.85f));
		SpinStyle.ForegroundColor = FSlateColor(FLinearColor(1.f, 1.f, 1.f, 1.f));

		TArray<UCheckBox*> Boxes;
		TArray<USpinBox*> Spins;
		for (int32 Index = 0; Index < Scroll->GetChildrenCount(); ++Index)
		{
			CollectCheckBoxes(Scroll->GetChildAt(Index), Boxes);
			CollectSpinBoxes(Scroll->GetChildAt(Index), Spins);
		}

		for (UCheckBox* Box : Boxes)
		{
			if (!Box)
			{
				continue;
			}
			Box->SetIsEnabled(true);
			Box->SetRenderOpacity(1.f);
			Box->SetWidgetStyle(CheckStyle);
			{
				FWidgetTransform Xform = Box->GetRenderTransform();
				if (FMath::Max(FMath::Abs(Xform.Scale.X), FMath::Abs(Xform.Scale.Y)) < 1.5f)
				{
					Xform.Scale = FVector2D(2.f, 2.f);
					Box->SetRenderTransform(Xform);
				}
			}
		}

		for (USpinBox* Spin : Spins)
		{
			if (!Spin)
			{
				continue;
			}
			Spin->SetIsEnabled(true);
			Spin->SetRenderOpacity(1.f);
			Spin->SetWidgetStyle(SpinStyle);
			Spin->SetForegroundColor(FSlateColor(FLinearColor(1.f, 1.f, 1.f, 1.f)));
			FSlateFontInfo Font = Spin->GetFont();
			Font.OutlineSettings.OutlineSize = 2;
			Font.OutlineSettings.bApplyOutlineToDropShadows = true;
			Font.OutlineSettings.OutlineColor = FLinearColor(0.f, 0.f, 0.f, 0.95f);
			if (Font.Size < 18.f)
			{
				Font.Size = 18.f;
			}
			Spin->SetFont(Font);
		}

		if (UWidget* ShowFPS = [&]() -> UWidget*
			{
				for (int32 Index = 0; Index < Scroll->GetChildrenCount(); ++Index)
				{
					if (UWidget* Child = Scroll->GetChildAt(Index))
					{
						if (Child->GetFName() == TEXT("ShowFPS"))
						{
							return Child;
						}
					}
				}
				return nullptr;
			}())
		{
			ShowFPS->SetIsEnabled(true);
			ShowFPS->SetRenderOpacity(1.f);
		}
	}

	UTextBlock* FirstText(UWidget* Widget)
	{
		if (!Widget)
		{
			return nullptr;
		}
		if (UTextBlock* Text = Cast<UTextBlock>(Widget))
		{
			return Text;
		}
		if (UUserWidget* User = Cast<UUserWidget>(Widget))
		{
			if (UTextBlock* Text = FirstText(User->GetRootWidget()))
			{
				return Text;
			}
		}
		if (UPanelWidget* Panel = Cast<UPanelWidget>(Widget))
		{
			for (int32 Index = 0; Index < Panel->GetChildrenCount(); ++Index)
			{
				if (UTextBlock* Text = FirstText(Panel->GetChildAt(Index)))
				{
					return Text;
				}
			}
		}
		return nullptr;
	}

	UImage* RoundIcon(UWidget* Owner, const TCHAR* TexturePath, float Size)
	{
		UImage* Image = NewObject<UImage>(Owner);
		if (UTexture2D* Texture = LoadObject<UTexture2D>(nullptr, TexturePath))
		{
			FSlateBrush Brush;
			Brush.SetResourceObject(Texture);
			Brush.ImageSize = FVector2D(Size, Size);
			Image->SetBrush(Brush);
		}
		return Image;
	}
}

void ULPSettingsSubsystem::Initialize(FSubsystemCollectionBase& Collection)
{
	Super::Initialize(Collection);
	// Chaque frame : le BP Settings peut reforcer Visible sur toutes les lignes entre deux ticks.
	TickHandle = FTSTicker::GetCoreTicker().AddTicker(FTickerDelegate::CreateUObject(this, &ULPSettingsSubsystem::Tick), 0.f);
}

void ULPSettingsSubsystem::Deinitialize()
{
	FTSTicker::GetCoreTicker().RemoveTicker(TickHandle);
	Super::Deinitialize();
}

bool ULPSettingsSubsystem::Tick(float DeltaTime)
{
	(void)DeltaTime;
	PlaceSettingsButton();
	UScrollBox* Scroll = nullptr;
	for (TObjectIterator<UScrollBox> It; It; ++It)
	{
		UScrollBox* Candidate = *It;
		if (!Candidate || Candidate->GetFName() != TEXT("SettingsScrollBox") || Candidate->HasAnyFlags(RF_ClassDefaultObject | RF_ArchetypeObject))
		{
			continue;
		}
		const UUserWidget* MenuOwner = Candidate->GetTypedOuter<UUserWidget>();
		if (!MenuOwner || MenuOwner->HasAnyFlags(RF_ClassDefaultObject) || MenuOwner->GetGameInstance() != GetGameInstance())
		{
			continue;
		}
		Scroll = Candidate;
		break;
	}
	if (!Scroll)
	{
		return true;
	}
	SettingsList = Scroll;
	const bool bOpen = LPSettingsUi::IsOpen(Scroll);
	if (TabBar.IsValid())
	{
		TabBar->SetVisibility(bOpen ? ESlateVisibility::Visible : ESlateVisibility::Collapsed);
	}
	if (KeyboardHost.IsValid() && !bOpen)
	{
		KeyboardHost->SetVisibility(ESlateVisibility::Collapsed);
		bKeyboardPage = false;
	}
	if (!bOpen)
	{
		bControlsHardened = false;
		return true;
	}
	if (UUserWidget* Menu = Scroll->GetTypedOuter<UUserWidget>())
	{
		LPSettingsUi::WireMainMenuGI(Menu, GetGameInstance());
	}
	EnsureTabs(Scroll);
	const int32 ChildCount = Scroll->GetChildrenCount();
	if (!bControlsHardened || ChildCount != LastChildCount)
	{
		LPSettingsUi::HardenSettingsControls(Scroll);
		bControlsHardened = true;
		LastChildCount = ChildCount;
	}
	ApplyRows();
	return true;
}

void ULPSettingsSubsystem::OpenSettings()
{
	if (UButton* Source = SourceSettings.Get())
	{
		Source->OnClicked.Broadcast();
	}
}

void ULPSettingsSubsystem::PlaceSettingsButton()
{
	UVerticalBox* Menu = nullptr;
	UButton* TitleMods = nullptr;
	UButton* Original = nullptr;
	UButton* Ours = nullptr;
	for (TObjectIterator<UVerticalBox> It; It; ++It)
	{
		UVerticalBox* Box = *It;
		if (!Box || Box->GetFName() != TEXT("MainMenuOptions") || Box->HasAnyFlags(RF_ClassDefaultObject | RF_ArchetypeObject))
		{
			continue;
		}
		const UUserWidget* MenuOwner = Box->GetTypedOuter<UUserWidget>();
		if (!MenuOwner || MenuOwner->HasAnyFlags(RF_ClassDefaultObject) || MenuOwner->GetGameInstance() != GetGameInstance())
		{
			continue;
		}
		UButton* FoundTitle = nullptr;
		for (int32 Index = 0; Index < Box->GetChildrenCount(); ++Index)
		{
			if (UButton* Child = Cast<UButton>(Box->GetChildAt(Index)))
			{
				if (Child->GetFName() == TEXT("ModManagerTitleButton"))
				{
					FoundTitle = Child;
					break;
				}
			}
		}
		if (FoundTitle)
		{
			Menu = Box;
			TitleMods = FoundTitle;
			break;
		}
	}
	if (!Menu || !TitleMods)
	{
		return;
	}
	for (int32 Index = 0; Index < Menu->GetChildrenCount(); ++Index)
	{
		UButton* Child = Cast<UButton>(Menu->GetChildAt(Index));
		if (!Child)
		{
			continue;
		}
		if (Child->GetFName() == TEXT("SettingsButton"))
		{
			Original = Child;
		}
		else if (Child->GetFName() == TEXT("LPSettingsTitleButton"))
		{
			Ours = Child;
		}
	}
	if (Original)
	{
		SourceSettings = Original;
	}
	if (!Ours)
	{
		Ours = NewObject<UButton>(Menu, TEXT("LPSettingsTitleButton"));
		Ours->SetStyle(TitleMods->GetStyle());
		UOverlay* Icon = NewObject<UOverlay>(Ours);
		UImage* Circle = LPSettingsUi::RoundIcon(Icon, TEXT("/Game/Heavy/New/whitecircle.whitecircle"), 50.f);
		UImage* Gear = LPSettingsUi::RoundIcon(Icon, TEXT("/Game/Heavy/New/settings.settings"), 42.f);
		if (UOverlaySlot* Slot = Cast<UOverlaySlot>(Icon->AddChild(Circle)))
		{
			Slot->SetHorizontalAlignment(HAlign_Fill);
			Slot->SetVerticalAlignment(VAlign_Fill);
		}
		if (UOverlaySlot* Slot = Cast<UOverlaySlot>(Icon->AddChild(Gear)))
		{
			Slot->SetHorizontalAlignment(HAlign_Fill);
			Slot->SetVerticalAlignment(VAlign_Fill);
			Slot->SetPadding(FMargin(6.f));
		}
		USizeBox* IconFrame = NewObject<USizeBox>(Ours);
		IconFrame->SetWidthOverride(50.f);
		IconFrame->SetHeightOverride(50.f);
		IconFrame->AddChild(Icon);
		UTextBlock* Label = NewObject<UTextBlock>(Ours);
		Label->SetText(FText::FromString(TEXT("Settings")));
		if (const UTextBlock* Sample = LPSettingsUi::FirstText(TitleMods))
		{
			Label->SetFont(Sample->GetFont());
			Label->SetColorAndOpacity(Sample->GetColorAndOpacity());
			Label->SetShadowOffset(Sample->GetShadowOffset());
		}
		else
		{
			Label->SetFont(FCoreStyle::GetDefaultFontStyle("Regular", 26));
		}
		UHorizontalBox* Row = NewObject<UHorizontalBox>(Ours);
		if (UHorizontalBoxSlot* Slot = Row->AddChildToHorizontalBox(IconFrame))
		{
			Slot->SetPadding(FMargin(0.f, 0.f, 10.f, 0.f));
			Slot->SetVerticalAlignment(VAlign_Center);
		}
		if (UHorizontalBoxSlot* Slot = Row->AddChildToHorizontalBox(Label))
		{
			Slot->SetVerticalAlignment(VAlign_Center);
		}
		Ours->SetContent(Row);
		if (UButtonSlot* ContentSlot = Cast<UButtonSlot>(Row->Slot))
		{
			ContentSlot->SetHorizontalAlignment(HAlign_Left);
			ContentSlot->SetVerticalAlignment(VAlign_Center);
		}
		if (Original)
		{
			Ours->SetToolTipText(Original->GetToolTipText());
		}
		FScriptDelegate Delegate;
		Delegate.BindUFunction(this, GET_FUNCTION_NAME_CHECKED(ULPSettingsSubsystem, OpenSettings));
		Ours->OnClicked.Add(Delegate);
		UE_LOG(LogLifePlay, Display, TEXT("Reglages : entree Settings ajoutee sur l'ecran titre"));
	}
	// InsertChildAt ne réordonne que le tableau UMG. La boîte Slate, elle, garde le bouton en dernier,
	// donc sous Exit. On reconstruit les emplacements pour que l'ordre peint soit celui du tableau.
	if (OrderedMenu.Get() != Menu)
	{
		struct FKept
		{
			UWidget* Widget = nullptr;
			FMargin Padding;
			EHorizontalAlignment HAlign = HAlign_Fill;
			EVerticalAlignment VAlign = VAlign_Fill;
			FSlateChildSize Size;
		};
		TArray<FKept> Kept;
		for (int32 Index = 0; Index < Menu->GetChildrenCount(); ++Index)
		{
			UWidget* Child = Menu->GetChildAt(Index);
			if (!Child || Child == Ours)
			{
				continue;
			}
			FKept Item;
			Item.Widget = Child;
			if (const UVerticalBoxSlot* Slot = Cast<UVerticalBoxSlot>(Child->Slot))
			{
				Item.Padding = Slot->GetPadding();
				Item.HAlign = Slot->GetHorizontalAlignment();
				Item.VAlign = Slot->GetVerticalAlignment();
				Item.Size = Slot->GetSize();
			}
			Kept.Add(Item);
		}
		FKept SettingsItem;
		SettingsItem.Widget = Ours;
		SettingsItem.Padding = FMargin(0.f, 0.f, 0.f, 10.f);
		SettingsItem.HAlign = HAlign_Fill;
		if (const UVerticalBoxSlot* TitleSlot = Cast<UVerticalBoxSlot>(TitleMods->Slot))
		{
			SettingsItem.Padding = TitleSlot->GetPadding();
			SettingsItem.HAlign = TitleSlot->GetHorizontalAlignment();
			SettingsItem.VAlign = TitleSlot->GetVerticalAlignment();
			SettingsItem.Size = TitleSlot->GetSize();
		}
		int32 InsertAt = Kept.Num();
		for (int32 Index = 0; Index < Kept.Num(); ++Index)
		{
			if (Kept[Index].Widget == TitleMods)
			{
				InsertAt = Index + 1;
				break;
			}
		}
		Kept.Insert(SettingsItem, InsertAt);
		Menu->ClearChildren();
		for (const FKept& Item : Kept)
		{
			if (UVerticalBoxSlot* Slot = Cast<UVerticalBoxSlot>(Menu->AddChild(Item.Widget)))
			{
				Slot->SetPadding(Item.Padding);
				Slot->SetHorizontalAlignment(Item.HAlign);
				Slot->SetVerticalAlignment(Item.VAlign);
				Slot->SetSize(Item.Size);
			}
		}
		OrderedMenu = Menu;
		UE_LOG(LogLifePlay, Display, TEXT("Reglages : Settings place apres Mod Manager"));
	}
	const ESlateVisibility TitleVisibility = TitleMods->GetVisibility();
	if (Ours->GetVisibility() != TitleVisibility)
	{
		Ours->SetVisibility(TitleVisibility);
	}
}

void ULPSettingsSubsystem::EnsureTabs(UScrollBox* Scroll)
{
	if (TabBar.IsValid())
	{
		return;
	}
	UCanvasPanel* Canvas = Cast<UCanvasPanel>(Scroll->GetParent());
	UCanvasPanelSlot* ScrollSlot = Cast<UCanvasPanelSlot>(Scroll->Slot);
	if (!Canvas || !ScrollSlot)
	{
		return;
	}
	UHorizontalBox* Bar = NewObject<UHorizontalBox>(Canvas, TEXT("LPSettingsTabs"));
	UCanvasPanelSlot* BarSlot = Canvas->AddChildToCanvas(Bar);
	if (!BarSlot)
	{
		return;
	}
	BarSlot->SetAnchors(ScrollSlot->GetAnchors());
	BarSlot->SetAlignment(ScrollSlot->GetAlignment());
	BarSlot->SetPosition(ScrollSlot->GetPosition() - FVector2D(0.f, 46.f));
	BarSlot->SetSize(FVector2D(ScrollSlot->GetSize().X, 40.f));
	BarSlot->SetZOrder(ScrollSlot->GetZOrder() + 1);
	TabBar = Bar;
	TabLabels.Reset();

	const FName Clicks[] = {
		GET_FUNCTION_NAME_CHECKED(ULPSettingsSubsystem, ShowGeneral),
		GET_FUNCTION_NAME_CHECKED(ULPSettingsSubsystem, ShowAudio),
		GET_FUNCTION_NAME_CHECKED(ULPSettingsSubsystem, ShowVideo),
		GET_FUNCTION_NAME_CHECKED(ULPSettingsSubsystem, ShowKeyboard),
		GET_FUNCTION_NAME_CHECKED(ULPSettingsSubsystem, ShowLewd),
		GET_FUNCTION_NAME_CHECKED(ULPSettingsSubsystem, ShowMisc)
	};
	for (int32 Index = 0; Index < UE_ARRAY_COUNT(LPSettingsUi::TabNames); ++Index)
	{
		UButton* Button = NewObject<UButton>(Bar);
		UTextBlock* Label = NewObject<UTextBlock>(Button);
		Label->SetText(FText::FromString(LPSettingsUi::TabNames[Index]));
		Label->SetFont(FCoreStyle::GetDefaultFontStyle("Bold", 14));
		Button->SetContent(Label);
		FButtonStyle Style = Button->GetStyle();
		Style.NormalPadding = FMargin(10.f, 4.f);
		Style.PressedPadding = FMargin(10.f, 5.f, 10.f, 3.f);
		Button->SetStyle(Style);
		if (UHorizontalBoxSlot* Slot = Cast<UHorizontalBoxSlot>(Bar->AddChild(Button)))
		{
			Slot->SetPadding(FMargin(3.f, 0.f));
			Slot->SetSize(FSlateChildSize(ESlateSizeRule::Automatic));
			Slot->SetVerticalAlignment(VAlign_Center);
		}
		FScriptDelegate Delegate;
		Delegate.BindUFunction(this, Clicks[Index]);
		Button->OnClicked.Add(Delegate);
		TabLabels.Add(Label);
	}

	UNativeWidgetHost* Host = NewObject<UNativeWidgetHost>(Canvas, TEXT("LPSettingsKeyboard"));
	if (UCanvasPanelSlot* HostSlot = Canvas->AddChildToCanvas(Host))
	{
		HostSlot->SetAnchors(ScrollSlot->GetAnchors());
		HostSlot->SetAlignment(ScrollSlot->GetAlignment());
		HostSlot->SetPosition(ScrollSlot->GetPosition() + FVector2D(0.f, 48.f));
		const FVector2D Size = ScrollSlot->GetSize();
		HostSlot->SetSize(FVector2D(Size.X, FMath::Max(120.f, Size.Y - 48.f)));
		HostSlot->SetZOrder(ScrollSlot->GetZOrder() + 1);
	}
	Host->SetVisibility(ESlateVisibility::Collapsed);
	KeyboardHost = Host;
	ActiveTab = 0;
	ApplyRows();
	UE_LOG(LogLifePlay, Display, TEXT("Reglages : onglets General, Audio, Video, Keyboard, Lewd, Misc"));
}

void ULPSettingsSubsystem::SelectTab(int32 Index)
{
	ActiveTab = Index;
	ApplyRows();
}

void ULPSettingsSubsystem::ApplyRows()
{
	UScrollBox* Scroll = SettingsList.Get();
	if (!Scroll)
	{
		return;
	}
	for (int32 Index = 0; Index < TabLabels.Num(); ++Index)
	{
		if (UTextBlock* Label = TabLabels[Index].Get())
		{
			const bool bOn = Index == ActiveTab;
			Label->SetColorAndOpacity(FSlateColor(bOn ? FLinearColor(1.f, 0.92f, 0.45f) : FLinearColor(0.75f, 0.75f, 0.75f)));
		}
	}
	for (int32 Index = 0; Index < Scroll->GetChildrenCount(); ++Index)
	{
		UWidget* Child = Scroll->GetChildAt(Index);
		if (!Child || Child->GetFName() == TEXT("LPKeyboardRow"))
		{
			if (Child)
			{
				Child->SetVisibility(ESlateVisibility::Collapsed);
			}
			continue;
		}
		LPSettingsUi::RenameVolumes(Child);
		const int32 Category = LPSettingsUi::CategoryOf(Child);
		// -1 : toujours visible (BackButton) ; -2 : toujours replie.
		const bool bShow = Category == LPSettingsUi::TabAlways || (Category != LPSettingsUi::TabHidden && ActiveTab != LPSettingsUi::TabKeyboard && Category == ActiveTab);
		Child->SetVisibility(bShow ? ESlateVisibility::Visible : ESlateVisibility::Collapsed);
	}
	const bool bKeyboard = ActiveTab == LPSettingsUi::TabKeyboard;
	if (UNativeWidgetHost* Host = KeyboardHost.Get())
	{
		Host->SetVisibility(bKeyboard ? ESlateVisibility::Visible : ESlateVisibility::Collapsed);
		if (bKeyboard && !bKeyboardPage)
		{
			if (ULPKeyboardSubsystem* Keys = GetGameInstance()->GetSubsystem<ULPKeyboardSubsystem>())
			{
				Host->SetContent(Keys->TakeEmbeddedPage());
				bKeyboardPage = true;
			}
		}
	}
}

void ULPSettingsSubsystem::ShowGeneral() { SelectTab(LPSettingsUi::TabGeneral); }
void ULPSettingsSubsystem::ShowAudio() { SelectTab(LPSettingsUi::TabAudio); }
void ULPSettingsSubsystem::ShowVideo() { SelectTab(LPSettingsUi::TabVideo); }
void ULPSettingsSubsystem::ShowKeyboard() { SelectTab(LPSettingsUi::TabKeyboard); }
void ULPSettingsSubsystem::ShowLewd() { SelectTab(LPSettingsUi::TabLewd); }
void ULPSettingsSubsystem::ShowMisc() { SelectTab(LPSettingsUi::TabMisc); }