// Copyright Epic Games, Inc. All Rights Reserved.

#include "WindowsTargetSettingsDetails.h"
#include "Misc/Paths.h"
#include "Misc/ConfigCacheIni.h"
#include "Misc/App.h"
#include "Modules/ModuleManager.h"
#include "Layout/Margin.h"
#include "Widgets/SNullWidget.h"
#include "Widgets/DeclarativeSyntaxSupport.h"
#include "Widgets/SBoxPanel.h"
#include "Widgets/Input/SCheckBox.h"
#include "Styling/SlateTypes.h"
#include "Textures/SlateIcon.h"
#include "Framework/Commands/UIAction.h"
#include "Widgets/Text/STextBlock.h"
#include "Framework/MultiBox/MultiBoxBuilder.h"
#include "Widgets/Input/SEditableTextBox.h"
#include "Widgets/Input/SComboButton.h"
#include "Widgets/Input/SCheckBox.h"
#include "EditorStyleSet.h"
#include "EditorDirectories.h"
#include "PropertyHandle.h"
#include "DetailLayoutBuilder.h"
#include "DetailWidgetRow.h"
#include "IDetailPropertyRow.h"
#include "DetailCategoryBuilder.h"
#include "Interfaces/ITargetPlatform.h"
#include "Interfaces/ITargetPlatformModule.h"
#include "SExternalImageReference.h"
#include "UnrealEngine.h"

#if WITH_ENGINE
#include "AudioDevice.h"
#include "ContentStreaming.h"
#endif 

#define LOCTEXT_NAMESPACE "WindowsTargetSettingsDetails"

namespace WindowsTargetSettingsDetailsConstants
{
	/** The filename for the game splash screen */
	const FString GameSplashFileName(TEXT("Splash/Splash.bmp"));

	/** The filename for the editor splash screen */
	const FString EditorSplashFileName(TEXT("Splash/EdSplash.bmp"));

	/** ToolTip used when an option is not available to binary users. */
	const FText DisabledTip = LOCTEXT("GitHubSourceRequiredToolTip", "This requires GitHub source.");
}

static FText GetFriendlyNameFromWindowsRHIName(const FString& InRHIName)
{
	FText FriendlyRHIName;
	if (InRHIName == TEXT("PCD3D_SM6"))
	{
		FriendlyRHIName = LOCTEXT("DirectX12", "DirectX 12 (SM6, Experimental)");
	}
	else if (InRHIName == TEXT("PCD3D_SM5"))
	{
		FriendlyRHIName = LOCTEXT("DirectX11", "DirectX 11 & 12 (SM5)");
	}
	else if (InRHIName == TEXT("PCD3D_ES31"))
	{
		FriendlyRHIName = LOCTEXT("DirectXES31", "DirectX Mobile Emulation (ES3.1)");
	}
	else if (InRHIName == TEXT("SF_VULKAN_SM5"))
	{
		FriendlyRHIName = LOCTEXT("VulkanSM5", "Vulkan (SM5)");
	}
	else if (InRHIName == TEXT("GLSL_150_ES31")
		|| InRHIName == TEXT("SF_VULKAN_ES31_ANDROID") || InRHIName == TEXT("SF_VULKAN_ES31")
		|| InRHIName == TEXT("GLSL_430"))
	{
		// Explicitly remove these formats as they are obsolete/not quite supported; users can still target them by adding them as +TargetedRHIs in the TargetPlatform ini.
		FriendlyRHIName = FText::GetEmpty();
	}
	else
	{
		UE_LOG(LogEngine, Warning, TEXT("Unknown Windows target RHI %s"), *InRHIName);
		FriendlyRHIName = LOCTEXT("UnknownRHI", "UnknownRHI");
	}

	return FriendlyRHIName;
}


TSharedRef<IDetailCustomization> FWindowsTargetSettingsDetails::MakeInstance()
{
	return MakeShareable(new FWindowsTargetSettingsDetails);
}

namespace EWindowsImageScope
{
	enum Type
	{
		Engine,
		GameOverride
	};
}

/* Helper function used to generate filenames for splash screens */
static FString GetWindowsSplashFilename(EWindowsImageScope::Type Scope, bool bIsEditorSplash)
{
	FString Filename;

	if (Scope == EWindowsImageScope::Engine)
	{
		Filename = FPaths::EngineContentDir();
	}
	else
	{
		Filename = FPaths::ProjectContentDir();
	}

	if(bIsEditorSplash)
	{
		Filename /= WindowsTargetSettingsDetailsConstants::EditorSplashFileName;
	}
	else
	{
		Filename /= WindowsTargetSettingsDetailsConstants::GameSplashFileName;
	}

	Filename = FPaths::ConvertRelativePathToFull(Filename);

	return Filename;
}

/* Helper function used to generate filenames for icons */
static FString GetWindowsIconFilename(EWindowsImageScope::Type Scope)
{
	const FString& PlatformName = FModuleManager::GetModuleChecked<ITargetPlatformModule>("WindowsTargetPlatform").GetTargetPlatforms()[0]->PlatformName();

	if (Scope == EWindowsImageScope::Engine)
	{
		FString Filename = FPaths::EngineDir() / FString(TEXT("Build/Windows/Resources/Default.ico"));
		return FPaths::ConvertRelativePathToFull(Filename);
	}
	else
	{
		FString Filename = FPaths::ProjectDir() / TEXT("Build/Windows/Application.ico");
		if(!FPaths::FileExists(Filename))
		{
			FString LegacyFilename = FPaths::GameSourceDir() / FString(FApp::GetProjectName()) / FString(TEXT("Resources")) / PlatformName / FString(FApp::GetProjectName()) + TEXT(".ico");
			if(FPaths::FileExists(LegacyFilename))
			{
				Filename = LegacyFilename;
			}
		}
		return FPaths::ConvertRelativePathToFull(Filename);
	}
}

void FWindowsTargetSettingsDetails::CustomizeDetails( IDetailLayoutBuilder& DetailBuilder )
{
	// Setup the supported/targeted RHI property view
	ITargetPlatform* TargetPlatform = FModuleManager::GetModuleChecked<ITargetPlatformModule>("WindowsTargetPlatform").GetTargetPlatforms()[0];
	TargetShaderFormatsDetails = MakeShareable(new FShaderFormatsPropertyDetails(&DetailBuilder));
	TargetShaderFormatsDetails->CreateTargetShaderFormatsPropertyView(TargetPlatform, GetFriendlyNameFromWindowsRHIName);

	// Next add the splash image customization
	const FText EditorSplashDesc(LOCTEXT("EditorSplashLabel", "Editor Splash"));
	IDetailCategoryBuilder& SplashCategoryBuilder = DetailBuilder.EditCategory(TEXT("Splash"));
	FDetailWidgetRow& EditorSplashWidgetRow = SplashCategoryBuilder.AddCustomRow(EditorSplashDesc);

	const FString EditorSplash_TargetImagePath = GetWindowsSplashFilename(EWindowsImageScope::GameOverride, true);
	const FString EditorSplash_DefaultImagePath = GetWindowsSplashFilename(EWindowsImageScope::Engine, true);

	TArray<FString> ImageExtensions;
	ImageExtensions.Add(TEXT("png"));
	ImageExtensions.Add(TEXT("jpg"));
	ImageExtensions.Add(TEXT("bmp"));

	EditorSplashWidgetRow
	.NameContent()
	[
		SNew(SHorizontalBox)
		+SHorizontalBox::Slot()
		.Padding( FMargin( 0, 1, 0, 1 ) )
		.FillWidth(1.0f)
		[
			SNew(STextBlock)
			.Text(EditorSplashDesc)
			.Font(DetailBuilder.GetDetailFont())
		]
	]
	.ValueContent()
	.MaxDesiredWidth(500.0f)
	.MinDesiredWidth(100.0f)
	[
		SNew(SHorizontalBox)
		+SHorizontalBox::Slot()
		.FillWidth(1.0f)
		.VAlign(VAlign_Center)
		[
			SNew(SExternalImageReference, EditorSplash_DefaultImagePath, EditorSplash_TargetImagePath)
			.FileDescription(EditorSplashDesc)
			.OnGetPickerPath(FOnGetPickerPath::CreateSP(this, &FWindowsTargetSettingsDetails::GetPickerPath))
			.OnPostExternalImageCopy(FOnPostExternalImageCopy::CreateSP(this, &FWindowsTargetSettingsDetails::HandlePostExternalIconCopy))
			.DeleteTargetWhenDefaultChosen(true)
			.FileExtensions(ImageExtensions)
			.DeletePreviousTargetWhenExtensionChanges(true)
		]
	];

	const FText GameSplashDesc(LOCTEXT("GameSplashLabel", "Game Splash"));
	FDetailWidgetRow& GameSplashWidgetRow = SplashCategoryBuilder.AddCustomRow(GameSplashDesc);
	const FString GameSplash_TargetImagePath = GetWindowsSplashFilename(EWindowsImageScope::GameOverride, false);
	const FString GameSplash_DefaultImagePath = GetWindowsSplashFilename(EWindowsImageScope::Engine, false);

	GameSplashWidgetRow
	.NameContent()
	[
		SNew(SHorizontalBox)
		+SHorizontalBox::Slot()
		.Padding( FMargin( 0, 1, 0, 1 ) )
		.FillWidth(1.0f)
		[
			SNew(STextBlock)
			.Text(GameSplashDesc)
			.Font(DetailBuilder.GetDetailFont())
		]
	]
	.ValueContent()
	.MaxDesiredWidth(500.0f)
	.MinDesiredWidth(100.0f)
	[
		SNew(SHorizontalBox)
		+SHorizontalBox::Slot()
		.FillWidth(1.0f)
		.VAlign(VAlign_Center)
		[
			SNew(SExternalImageReference, GameSplash_DefaultImagePath, GameSplash_TargetImagePath)
			.FileDescription(GameSplashDesc)
			.OnGetPickerPath(FOnGetPickerPath::CreateSP(this, &FWindowsTargetSettingsDetails::GetPickerPath))
			.OnPostExternalImageCopy(FOnPostExternalImageCopy::CreateSP(this, &FWindowsTargetSettingsDetails::HandlePostExternalIconCopy))
			.DeleteTargetWhenDefaultChosen(true)
			.FileExtensions(ImageExtensions)
			.DeletePreviousTargetWhenExtensionChanges(true)
		]
	];

	IDetailCategoryBuilder& IconsCategoryBuilder = DetailBuilder.EditCategory(TEXT("Icon"));	
	FDetailWidgetRow& GameIconWidgetRow = IconsCategoryBuilder.AddCustomRow(LOCTEXT("GameIconLabel", "Game Icon"));
	GameIconWidgetRow
	.NameContent()
	[
		SNew(SHorizontalBox)
		+SHorizontalBox::Slot()
		.Padding( FMargin( 0, 1, 0, 1 ) )
		.FillWidth(1.0f)
		[
			SNew(STextBlock)
			.Text(LOCTEXT("GameIconLabel", "Game Icon"))
			.Font(DetailBuilder.GetDetailFont())
		]
	]
	.ValueContent()
	.MaxDesiredWidth(500.0f)
	.MinDesiredWidth(100.0f)
	[
		SNew(SHorizontalBox)
		+SHorizontalBox::Slot()
		.FillWidth(1.0f)
		.VAlign(VAlign_Center)
		[
			SNew(SExternalImageReference, GetWindowsIconFilename(EWindowsImageScope::Engine), GetWindowsIconFilename(EWindowsImageScope::GameOverride))
			.FileDescription(GameSplashDesc)
			.OnPreExternalImageCopy(FOnPreExternalImageCopy::CreateSP(this, &FWindowsTargetSettingsDetails::HandlePreExternalIconCopy))
			.OnGetPickerPath(FOnGetPickerPath::CreateSP(this, &FWindowsTargetSettingsDetails::GetPickerPath))
			.OnPostExternalImageCopy(FOnPostExternalImageCopy::CreateSP(this, &FWindowsTargetSettingsDetails::HandlePostExternalIconCopy))
		]
	];


	AudioPluginWidgetManager.BuildAudioCategory(DetailBuilder, TEXT("Windows"));
	IDetailCategoryBuilder& AudioCategory = DetailBuilder.EditCategory("Audio");

	// Here we add a callback when the 
// 	TSharedPtr<IPropertyHandle> AudioStreamCachingPropertyHandle = DetailBuilder.GetProperty("bUseAudioStreamCaching");
// 	IDetailCategoryBuilder& AudioStreamCachingCategory = DetailBuilder.EditCategory("Audio");
// 	IDetailPropertyRow& AudioStreamCachingPropertyRow = AudioCategory.AddProperty(AudioStreamCachingPropertyHandle);
// 	AudioStreamCachingPropertyRow.CustomWidget()
// 		.NameContent()
// 		[
// 			AudioStreamCachingPropertyHandle->CreatePropertyNameWidget()
// 		]
// 		.ValueContent()
// 		.MaxDesiredWidth(500.0f)
// 		.MinDesiredWidth(100.0f)
// 		[
// 			SNew(SHorizontalBox)
// 
// 			+ SHorizontalBox::Slot()
// 			.FillWidth(1.0f)
// 			[
// 				SNew(SCheckBox)
// 				.OnCheckStateChanged(this, &FWindowsTargetSettingsDetails::HandleAudioStreamCachingToggled, AudioStreamCachingPropertyHandle)
// 				.IsChecked(this, &FWindowsTargetSettingsDetails::GetAudioStreamCachingToggled, AudioStreamCachingPropertyHandle)
// 				.ToolTipText(AudioStreamCachingPropertyHandle->GetToolTipText())
// 			]
// 		];
}

bool FWindowsTargetSettingsDetails::HandlePreExternalIconCopy(const FString& InChosenImage)
{
	return true;
}


FString FWindowsTargetSettingsDetails::GetPickerPath()
{
	return FEditorDirectories::Get().GetLastDirectory(ELastDirectory::GENERIC_OPEN);
}


bool FWindowsTargetSettingsDetails::HandlePostExternalIconCopy(const FString& InChosenImage)
{
	FEditorDirectories::Get().SetLastDirectory(ELastDirectory::GENERIC_OPEN, FPaths::GetPath(InChosenImage));
	return true;
}

void FWindowsTargetSettingsDetails::HandleAudioStreamCachingToggled(ECheckBoxState EnableStreamCaching, TSharedPtr<IPropertyHandle> PropertyHandle)
{
	PropertyHandle->SetValue(EnableStreamCaching == ECheckBoxState::Checked);

#if WITH_ENGINE
	IStreamingManager::Get().OnAudioStreamingParamsChanged();
#endif
}

ECheckBoxState FWindowsTargetSettingsDetails::GetAudioStreamCachingToggled(TSharedPtr<IPropertyHandle> PropertyHandle) const
{
	bool bEnabled = false;
	PropertyHandle->GetValue(bEnabled);

	if (bEnabled)
	{
		return ECheckBoxState::Checked;
	}
	else
	{
		return ECheckBoxState::Unchecked;
	}
}

#undef LOCTEXT_NAMESPACE