feat:USaveGame added for storage persistence and saving and retrieving sessionId

Plugins/Web3AuthSDK/Source/Web3AuthSDK/Private/KeyStoreUtils.cpp

@@ -0,0 +1,37 @@
+#include "KeyStoreUtils.h"
+
+UKeyStoreUtils::UKeyStoreUtils() {
+    UWeb3StorageAdapter::StaticClass();
+}
+
+UKeyStoreUtils::~UKeyStoreUtils() {}
+
+void UKeyStoreUtils::Assign(FString value) {
+    UWeb3StorageAdapter* saveGameInstance = Cast<UWeb3StorageAdapter>(UGameplayStatics::CreateSaveGameObject(UWeb3StorageAdapter::StaticClass()));
+
+    if (saveGameInstance)
+    {
+        saveGameInstance->sessionId = value;
+        UGameplayStatics::SaveGameToSlot(saveGameInstance, TEXT("Web3AuthDataSlot"), 0);
+    }
+}
+
+FString UKeyStoreUtils::Get() {
+    UWeb3StorageAdapter* saveGameInstance = Cast<UWeb3StorageAdapter>(UGameplayStatics::LoadGameFromSlot(TEXT("Web3AuthDataSlot"), 0));
+
+    if (saveGameInstance)
+    {
+        return saveGameInstance->sessionId;
+    }
+    return "";
+}
+
+void UKeyStoreUtils::Clear() {
+    UWeb3StorageAdapter* saveGameInstance = Cast<UWeb3StorageAdapter>(UGameplayStatics::CreateSaveGameObject(UWeb3StorageAdapter::StaticClass()));
+
+    if (saveGameInstance)
+    {
+        saveGameInstance->sessionId = "";
+        UGameplayStatics::SaveGameToSlot(saveGameInstance, TEXT("Web3AuthDataSlot"), 0);
+    }
+}

Plugins/Web3AuthSDK/Source/Web3AuthSDK/Private/Web3Auth.cpp

@@ -221,6 +221,7 @@ void UWeb3Auth::setResultUrl(FString hash) {
     int32 equalsIndex;
     if (hash.FindChar('=', equalsIndex)) {
         FString newSessionId = hash.Mid(equalsIndex + 1);
+        keyStoreUtils->Assign(newSessionId);
         this->sessionId = newSessionId;
     }
 
@@ -373,6 +374,7 @@ FUserInfo UWeb3Auth::getUserInfo() {
 }
 
 void UWeb3Auth::authorizeSession() {
+    this->sessionId = keyStoreUtils->Get();
 	if (!this->sessionId.IsEmpty()) {
 		FString pubKey = crypto->generatePublicKey(this->sessionId);
 		FString session = this->sessionId;
@@ -417,7 +419,7 @@ void UWeb3Auth::authorizeSession() {
 }
 
 void UWeb3Auth::sessionTimeout() {
-
+    this->sessionId = keyStoreUtils->Get();
 	if (!this->sessionId.IsEmpty()) {
 		FString pubKey = crypto->generatePublicKey(this->sessionId);
 		UE_LOG(LogTemp, Log, TEXT("public key %s"), *pubKey);
@@ -453,6 +455,7 @@ void UWeb3Auth::sessionTimeout() {
 						UE_LOG(LogTemp, Log, TEXT("Response: %s"), *response);
 						this->logoutEvent.ExecuteIfBound();
 						this->sessionId = FString();
+                        keyStoreUtils->Clear();
 					});
 		});
 	}
@@ -538,6 +541,7 @@ void UWeb3Auth::handleCreateSessionResponse(FString path, FString newSessionKey)
 void UWeb3Auth::Initialize(FSubsystemCollectionBase& Collection) {
 	Super::Initialize(Collection);
 	this->crypto = NewObject<UECCrypto>();
+    this->keyStoreUtils = NewObject<UKeyStoreUtils>();
 }
 
 void UWeb3Auth::Deinitialize() {
@@ -550,5 +554,6 @@ void UWeb3Auth::Deinitialize() {
 	httpRoutes.Empty();
 	this->crypto = nullptr;
 	this->web3AuthApi = nullptr;
+    this->keyStoreUtils = nullptr;
 }
 

Plugins/Web3AuthSDK/Source/Web3AuthSDK/Public/KeyStoreUtils.h

@@ -0,0 +1,31 @@
+#pragma once
+
+#include "CoreMinimal.h"
+#include "GameFramework/SaveGame.h"
+#include "Kismet/GameplayStatics.h"
+#include "KeyStoreUtils.generated.h"
+
+UCLASS()
+class UWeb3StorageAdapter : public USaveGame
+{
+    GENERATED_BODY()
+public:
+    UPROPERTY(VisibleAnywhere, Category = Basic)
+        FString sessionId;
+};
+
+UCLASS()
+class WEB3AUTHSDK_API UKeyStoreUtils : public UObject
+{
+    GENERATED_BODY()
+private:
+    UWeb3StorageAdapter* StorageInstance;
+public:
+    UKeyStoreUtils();
+    ~UKeyStoreUtils();
+
+    void Assign(FString value);
+    FString Get();
+    void Clear();
+};
+

Plugins/Web3AuthSDK/Source/Web3AuthSDK/Public/Web3Auth.h

@@ -9,6 +9,7 @@
 #include "Misc/Base64.h"
 #include "ECCrypto.h"
 #include "Web3AuthApi.h"
+#include "KeyStoreUtils.h"
 
 #include "Runtime/Online/HTTPServer/Public/HttpPath.h"
 #include "Runtime/Online/HTTPServer/Public/IHttpRouter.h"
@@ -699,6 +700,7 @@ class WEB3AUTHSDK_API UWeb3Auth : public UGameInstanceSubsystem
 	FWeb3AuthOptions web3AuthOptions;
 	FOnLogin loginEvent;
 	FOnLogout logoutEvent;
+    UKeyStoreUtils* keyStoreUtils;
 
 protected:
     virtual void Initialize(FSubsystemCollectionBase& Collection) override;