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

#pragma once

#include "CoreMinimal.h"
#include "ConfigCacheIni.h"
#include "SlateTypes.h"
#include "Styling/SlateStyle.h"

inline FName CloseButtonStyleName("CloseButton");
inline FName VolumeMeterBar("VolumeMeter");
inline FName VolumeMeterBarSpace("VolumeMeterSpace");
inline FName DefaultFontName("DefaultFont");
inline FName PianoRollBackground("PianoRollBackground");
inline FName WhiteBrush("WhiteBrush");
inline FName WhiteKey("WhiteKey");
inline FName BlackKey("BlackKey");

/**  */
class FAronaStyle : public FSlateStyleSet
{
public:
	FAronaStyle(const FName& InStyleSetName)
		: FSlateStyleSet(InStyleSetName)
	{
	}
	
	static void Initialize();

	static void Shutdown();

	/** reloads textures used by slate renderer */
	static void ReloadTextures();

	/** @return The Slate style set for the Shooter game */
	static const ISlateStyle& Get();

	virtual const FName& GetStyleSetName() const override;

	static const FButtonStyle* GetButtonStyle(const FName& PropertyName, const ANSICHAR* Specifier = nullptr);
	static const FSlateBrush* GetSlateBrush(const FName& PropertyName, const ANSICHAR* Specifier = nullptr);
	static FSlateFontInfo GetFontInfo(const FName& PropertyName, const ANSICHAR* Specifier = nullptr);
	
	template<typename T>
	static T GetValue(const FName& PropertyName, const ANSICHAR* Specifier = nullptr);

	FString SkinDir;
	FConfigFile Config;
private:
	void LoadConfig();
	template<typename T>
	TOptional<T> GetConfigValue(const FName& Key, FName FindSection = FName("Resource"));
	
	void AddImageBrush(FName Key);
	void AddFloatValue(FName Key);
	void AddFontInfo(FName Key);
	void AddButtonStyle(FName Key);
	
	// static FConfigFile Config;
	static TSharedRef<FAronaStyle> Create();
	static TSharedPtr<FAronaStyle> StyleInstance;
};

template <>
inline float FAronaStyle::GetValue(const FName& PropertyName, const ANSICHAR* Specifier)
{
	return StyleInstance->GetFloat(PropertyName, Specifier);
}

template <>
inline FVector2D FAronaStyle::GetValue(const FName& PropertyName, const ANSICHAR* Specifier)
{
	return StyleInstance->GetVector(PropertyName, Specifier);
}

template <>
inline const FLinearColor& FAronaStyle::GetValue(const FName& PropertyName, const ANSICHAR* Specifier)
{
	return StyleInstance->GetColor(PropertyName, Specifier);
}

template <>
inline const FSlateColor FAronaStyle::GetValue(const FName& PropertyName, const ANSICHAR* Specifier)
{
	return StyleInstance->GetSlateColor(PropertyName, Specifier);
}

template <>
inline const FMargin& FAronaStyle::GetValue(const FName& PropertyName, const ANSICHAR* Specifier)
{
	return StyleInstance->GetMargin(PropertyName, Specifier);
}

template<>
inline TOptional<FString> FAronaStyle::GetConfigValue(const FName& Key, FName FindSection)
{
	TSharedRef<FAronaStyle> Style = StaticCastSharedRef<FAronaStyle>(StyleInstance.ToSharedRef());
	if (!Style->Config.Contains(FindSection.ToString()))
		return TOptional<FString>();
	const FConfigSection* Section = Style->Config.Find(FindSection.ToString());
	if (Section == nullptr)
		return TOptional<FString>();
	const FConfigValue* ConfigValue = Section->Find(Key);
	if (ConfigValue == nullptr)
		return TOptional<FString>();
	return TOptional<FString>(ConfigValue->GetValue());
}

template<>
inline TOptional<FVector2f> FAronaStyle::GetConfigValue(const FName& Key, FName FindSection)
{
	TSharedRef<FAronaStyle> Style = StaticCastSharedRef<FAronaStyle>(StyleInstance.ToSharedRef());
	if (!Style->Config.Contains(FindSection.ToString()))
		return TOptional<FVector2f>();
	const FConfigSection* Section = Style->Config.Find(FindSection.ToString());
	if (Section == nullptr)
		return TOptional<FVector2f>();
	const FConfigValue* ConfigValue = Section->Find(Key);
	if (ConfigValue == nullptr)
		return TOptional<FVector2f>();
	FVector2f Value;
	Value.InitFromString(ConfigValue->GetValue());
	return TOptional<FVector2f>(Value);
}

template<>
inline TOptional<float> FAronaStyle::GetConfigValue(const FName& Key, FName FindSection)
{
	TSharedRef<FAronaStyle> Style = StaticCastSharedRef<FAronaStyle>(StyleInstance.ToSharedRef());
	if (!Style->Config.Contains(FindSection.ToString()))
		return TOptional<float>();
	const FConfigSection* Section = Style->Config.Find(FindSection.ToString());
	if (Section == nullptr)
		return TOptional<float>();
	const FConfigValue* ConfigValue = Section->Find(Key);
	if (ConfigValue == nullptr)
		return TOptional<float>();
	FString String = ConfigValue->GetValue();
	String = String.Replace(TEXT("x"), TEXT("X"));
	String = String.Replace(TEXT("y"), TEXT("Y"));
	String = String.Replace(TEXT("，"), TEXT(""));
	String = String.Replace(TEXT(","), TEXT(""));
	return TOptional<float>(FCString::Atof(*String));
}