Login User

This function helps your user to trigger the login process. The login flow will be triggered based on the selected provider.

Parameters

UWeb3AuthSDK::GetInstance()->Login() requires FWeb3AuthLoginParams as a required input.

FWeb3AuthLoginParams

• Table
• Interface

Parameter	Description
loginProvider	It sets the OAuth login method to be used. You can use any of the supported values are GOOGLE, FACEBOOK, REDDIT, DISCORD, TWITCH, APPLE, LINE, GITHUB, KAKAO, LINKEDIN, TWITTER, WEIBO, WECHAT, EMAIL_PASSWORDLESS.
extraLoginOptions?	It can be used to set the OAuth login options for corresponding loginProvider. For instance, you'll need to pass user's email address as. Default value for the field is null, and it accepts FExtraLoginOptions as a value.
redirectUrl?	Url where user will be redirected after successfull login. By default user will be redirected to same page where login will be initiated. Default value for the field is null, and accepts FString as a value.
appState?	It can be used to keep track of the app state when user will be redirected to app after login. Default is null, and accepts FString as a value.
mfaLevel?	Customize the MFA screen shown to the user during OAuth authentication. Default value for field is MFALevel.DEFAULT, which shows MFA screen every 3rd login. It accepts FMFALevel as a value.
dappShare?	Custom verifier logins can get a dapp share returned to them post successful login. This is useful if the dapps want to use this share to allow users to login seamlessly. It accepts FString as a value.
curve?	It will be used to determine the public key encoded in the jwt token which returned in getUserInfo function after user login. The default value is FCurve::speck256k1.

USTRUCT(BlueprintType)
struct FLoginParams
{
	GENERATED_BODY()

	UPROPERTY(EditAnywhere, BlueprintReadWrite)
		FString loginProvider;

	UPROPERTY(EditAnywhere, BlueprintReadWrite)
		FString dappShare;

	UPROPERTY(EditAnywhere, BlueprintReadWrite)
		FExtraLoginOptions extraLoginOptions;

	UPROPERTY(EditAnywhere, BlueprintReadWrite)
		FString appState;

	UPROPERTY(EditAnywhere, BlueprintReadWrite)
		FString redirectUrl;

	UPROPERTY(EditAnywhere, BlueprintReadWrite)
		FMFALevel mfaLevel;

	UPROPERTY(EditAnywhere, BlueprintReadWrite)
		FCurve curve;

	FLoginParams() {};
};

Provider

UENUM(BlueprintType)
enum class EWeb3AuthProvider : uint8
{
    GOOGLE UMETA(DisplayName = "Google"),
    FACEBOOK UMETA(DisplayName = "Facebook"),
    REDDIT UMETA(DisplayName = "Reddit"),
    DISCORD UMETA(DisplayName = "Discord"),
    TWITCH UMETA(DisplayName = "Twitch"),
    APPLE UMETA(DisplayName = "Apple"),
    LINE UMETA(DisplayName = "Line"),
    GITHUB UMETA(DisplayName = "GitHub"),
    KAKAO UMETA(DisplayName = "Kakao"),
    LINKEDIN UMETA(DisplayName = "LinkedIn"),
    TWITTER UMETA(DisplayName = "Twitter"),
    WEIBO UMETA(DisplayName = "Weibo"),
    WECHAT UMETA(DisplayName = "WeChat"),
    EMAIL_PASSWORDLESS UMETA(DisplayName = "Email Passwordless"),
    JWT UMETA(DisplayName = "JWT")
};

Usage

void AYourGameMode::LoginWithGoogle()
{
    FWeb3AuthLoginParams LoginParams;
    LoginParams.LoginProvider = TEXT("google");

    UWeb3AuthSDK::GetInstance()->Login(LoginParams);
}

UFUNCTION()
void AYourGameMode::OnWeb3AuthLoginSuccess(const FString& PrivateKey, const FString& PublicAddress)
{
    UE_LOG(LogTemp, Warning, TEXT("Web3Auth Login Success - Private Key: %s"), *PrivateKey);
    UE_LOG(LogTemp, Warning, TEXT("Web3Auth Login Success - Address: %s"), *PublicAddress);
}