ILckCore - LCK Documentation

What Problem Does This Solve?

LCK includes default UI (tablets) for user login and streaming setup, but you might want to build your own custom interface that matches your game’s style. You need a way to check if users are logged in, subscribed, and have configured streaming—without using the default tablet UI. ILckCore provides the core authentication and configuration APIs so you can build custom login flows and subscription gates.

When to Use This

Use ILckCore when:

Building a custom login UI instead of using LCK tablets
Implementing subscription-gated features
Checking if streaming is configured before showing recording options
Creating a branded authentication experience

Don’t use this if: You’re happy with the default tablet UI—just use that instead.

Quick Example

using LCK.Core;

public class CustomLoginUI : MonoBehaviour
{
    [InjectLck] private ILckCore _lckCore;
    
    public async void OnLoginButtonPressed()
    {
        // Start login and get short code
        var loginResult = await _lckCore.StartLoginAttemptAsync();
        
        if (!loginResult.IsOk)
        {
            ShowError($"Login failed: {loginResult.Message}");
            return;
        }
        
        string loginCode = loginResult.Ok;
        ShowLoginCode(loginCode); // Display "Enter code: ABC123"
        
        // Poll for completion
        bool loggedIn = await WaitForLoginCompletion();
        
        if (loggedIn)
        {
            ShowSuccess("Login successful!");
            CheckSubscription();
        }
    }
    
    async Task<bool> WaitForLoginCompletion()
    {
        for (int i = 0; i < 60; i++) // 60 seconds timeout
        {
            await Task.Delay(1000);
            
            var result = await _lckCore.CheckLoginCompletedAsync();
            if (result.IsOk && result.Ok)
                return true;
        }
        
        return false;
    }
    
    async void CheckSubscription()
    {
        var subResult = await _lckCore.IsUserSubscribed();
        
        if (subResult.IsOk && subResult.Ok)
        {
            EnablePremiumFeatures();
        }
        else
        {
            ShowSubscriptionPrompt();
        }
    }
}

How It Works

Start login → Get a short code (e.g., “ABC123”)
Display code → User enters it on a website
Poll for completion → Check if login succeeded
Handle result → Proceed with authenticated features

// Step 1: Get login code
var codeResult = await _lckCore.StartLoginAttemptAsync();
string code = codeResult.Ok; // "ABC123"

// Step 2: User visits login URL and enters code
ShowMessage($"Go to liv.tv/login and enter: {code}");

// Step 3: Poll until complete
while (true)
{
    await Task.Delay(2000); // Check every 2 seconds
    
    var loginCheck = await _lckCore.CheckLoginCompletedAsync();
    if (loginCheck.IsOk && loginCheck.Ok)
    {
        Debug.Log("Login successful!");
        break;
    }
}

Common Patterns

public class CustomAuthManager : MonoBehaviour
{
    [InjectLck] private ILckCore _lckCore;
    
    [SerializeField] private TMP_Text loginCodeText;
    [SerializeField] private GameObject loginPanel;
    [SerializeField] private GameObject loadingIndicator;
    
    public async void StartCustomLogin()
    {
        loginPanel.SetActive(true);
        loadingIndicator.SetActive(true);
        
        // Request login code
        var result = await _lckCore.StartLoginAttemptAsync();
        
        loadingIndicator.SetActive(false);
        
        if (!result.IsOk)
        {
            HandleLoginError(result.Err, result.Message);
            return;
        }
        
        // Display code to user
        string loginCode = result.Ok;
        loginCodeText.text = $"Enter this code at liv.tv/login:\n\n{loginCode}";
        
        // Wait for completion
        await PollForLoginCompletion();
    }
    
    async Task PollForLoginCompletion()
    {
        const int maxAttempts = 60; // 2 minutes (2s intervals)
        
        for (int attempt = 0; attempt < maxAttempts; attempt++)
        {
            await Task.Delay(2000);
            
            var checkResult = await _lckCore.CheckLoginCompletedAsync();
            
            if (checkResult.IsOk && checkResult.Ok)
            {
                OnLoginSuccess();
                return;
            }
        }
        
        // Timeout
        ShowError("Login timed out. Please try again.");
        loginPanel.SetActive(false);
    }
    
    void OnLoginSuccess()
    {
        loginPanel.SetActive(false);
        ShowSuccess("Login successful!");
        
        // Proceed to next step
        CheckUserStatus();
    }
    
    async void CheckUserStatus()
    {
        // Check subscription
        var subResult = await _lckCore.IsUserSubscribed();
        bool isSubscribed = subResult.IsOk && subResult.Ok;
        
        // Check streaming config
        var streamResult = await _lckCore.HasUserConfiguredStreaming();
        bool hasStreaming = streamResult.IsOk && streamResult.Ok;
        
        UpdateUI(isSubscribed, hasStreaming);
    }
    
    void HandleLoginError(CoreError error, string message)
    {
        string errorText = error switch
        {
            CoreError.UserNotLoggedIn => "Login required. Please try again.",
            CoreError.InvalidArgument => "Invalid login request.",
            CoreError.InternalError => "Server error. Please try again later.",
            _ => $"Login failed: {message}"
        };
        
        ShowError(errorText);
    }
}

Subscription gate for premium features

public class PremiumFeatureGate : MonoBehaviour
{
    [InjectLck] private ILckCore _lckCore;
    
    public async void OnPremiumButtonClicked()
    {
        var subResult = await _lckCore.IsUserSubscribed();
        
        if (!subResult.IsOk)
        {
            ShowError("Could not verify subscription");
            return;
        }
        
        if (subResult.Ok)
        {
            // User is subscribed
            UnlockPremiumFeature();
        }
        else
        {
            // User not subscribed
            ShowSubscriptionUpsell();
        }
    }
    
    void ShowSubscriptionUpsell()
    {
        // Show subscription benefits and purchase flow
        upsellPanel.SetActive(true);
    }
}

Check streaming configuration before enabling streaming

public class StreamingSetupChecker : MonoBehaviour
{
    [InjectLck] private ILckCore _lckCore;
    
    [SerializeField] private Button streamButton;
    [SerializeField] private GameObject setupPrompt;
    
    async void Start()
    {
        await CheckStreamingStatus();
    }
    
    async Task CheckStreamingStatus()
    {
        var result = await _lckCore.HasUserConfiguredStreaming();
        
        if (result.IsOk && result.Ok)
        {
            // Streaming configured, enable button
            streamButton.interactable = true;
            setupPrompt.SetActive(false);
        }
        else
        {
            // Not configured, show setup prompt
            streamButton.interactable = false;
            setupPrompt.SetActive(true);
        }
    }
    
    public void OnSetupClicked()
    {
        // Open streaming configuration UI
        // (Default tablet or custom implementation)
    }
}

Conditional feature availability

public class FeatureManager : MonoBehaviour
{
    [InjectLck] private ILckCore _lckCore;
    
    [SerializeField] private GameObject recordingFeature;
    [SerializeField] private GameObject streamingFeature;
    [SerializeField] private GameObject premiumFeature;
    
    async void Start()
    {
        await InitializeFeatures();
    }
    
    async Task InitializeFeatures()
    {
        // Everyone can record
        recordingFeature.SetActive(true);
        
        // Streaming requires configuration
        var streamConfig = await _lckCore.HasUserConfiguredStreaming();
        streamingFeature.SetActive(streamConfig.IsOk && streamConfig.Ok);
        
        // Premium features require subscription
        var subscription = await _lckCore.IsUserSubscribed();
        premiumFeature.SetActive(subscription.IsOk && subscription.Ok);
    }
}

Dependency Injection

ILckCore is injected using the [InjectLck] attribute:

using LCK.Core;

public class MyCustomUI : MonoBehaviour
{
    [InjectLck] private ILckCore _lckCore;
    
    void Start()
    {
        if (_lckCore == null)
        {
            Debug.LogError("ILckCore not injected!");
            return;
        }
        
        // Use _lckCore...
    }
}

Make sure LCK is properly initialized before using injected services. Call LckCore.Initialize() first.

API Reference

StartLoginAttemptAsync()

Initiates the login process and returns a short code for the user to enter on the login website.

Task<Result<string>> StartLoginAttemptAsync()

Returns: Result<string> containing the login code (e.g., “ABC123”) Example:

var result = await _lckCore.StartLoginAttemptAsync();
if (result.IsOk)
{
    Debug.Log($"Login code: {result.Ok}");
    ShowCodeToUser(result.Ok);
}

CheckLoginCompletedAsync()

Checks whether the user has completed the login process on the website.

Task<Result<bool>> CheckLoginCompletedAsync()

Returns: Result<bool> — true if login completed, false if still pending Example:

var result = await _lckCore.CheckLoginCompletedAsync();
if (result.IsOk && result.Ok)
{
    Debug.Log("User logged in!");
}

Usage pattern: Poll this method every 1-2 seconds after starting login.

IsUserSubscribed()

Checks if the logged-in user has an active subscription.

Task<Result<bool>> IsUserSubscribed()

Returns: Result<bool> — true if user has active subscription Example:

var result = await _lckCore.IsUserSubscribed();
if (result.IsOk && result.Ok)
{
    EnablePremiumFeatures();
}
else
{
    ShowUpgradePrompt();
}

HasUserConfiguredStreaming()

Checks if the user has configured their streaming setup (platforms, keys, etc.).

Task<Result<bool>> HasUserConfiguredStreaming()

Returns: Result<bool> — true if streaming is configured Example:

var result = await _lckCore.HasUserConfiguredStreaming();
if (result.IsOk && result.Ok)
{
    ShowStreamingOptions();
}
else
{
    ShowStreamingSetupPrompt();
}

Display code clearly — Use large, readable font for login code

Show instructions — Tell users where to enter the code (liv.tv/login)

Poll every 2 seconds — Balance responsiveness vs. server load

Set timeout — Don’t poll forever (60-120 seconds reasonable)

Handle errors — Network issues, expired codes, etc.

Good polling pattern

async Task<bool> WaitForLogin(int timeoutSeconds = 120)
{
    int attempts = timeoutSeconds / 2; // Poll every 2 seconds
    
    for (int i = 0; i < attempts; i++)
    {
        await Task.Delay(2000);
        
        var result = await _lckCore.CheckLoginCompletedAsync();
        
        if (!result.IsOk)
        {
            Debug.LogWarning($"Login check failed: {result.Message}");
            continue;
        }
        
        if (result.Ok)
            return true; // Success!
    }
    
    return false; // Timeout
}

Error Handling

All methods return Result<T> which can contain CoreError:

var result = await _lckCore.StartLoginAttemptAsync();

if (!result.IsOk)
{
    switch (result.Err)
    {
        case CoreError.InternalError:
            ShowError("Server error. Try again.");
            break;
        case CoreError.UserNotLoggedIn:
            ShowError("You must be logged in.");
            break;
        case CoreError.InvalidArgument:
            ShowError("Invalid request.");
            break;
        default:
            ShowError($"Error: {result.Message}");
            break;
    }
}

Custom Implementation Warning

Do not implement your own ILckCore. This interface is for consuming core services, not creating custom implementations. Use the provided implementation via dependency injection.

The LCK SDK provides the implementation—you just inject and use it.

For testing purposes, you can mock the interface:

#if UNITY_EDITOR
public class MockLckCore : ILckCore
{
    public async Task<Result<string>> StartLoginAttemptAsync()
    {
        await Task.Delay(100);
        return Result<string>.Ok("TEST123");
    }
    
    public async Task<Result<bool>> CheckLoginCompletedAsync()
    {
        await Task.Delay(100);
        return Result<bool>.Ok(true); // Always succeeds in test
    }
    
    public async Task<Result<bool>> IsUserSubscribed()
    {
        await Task.Delay(100);
        return Result<bool>.Ok(true); // Test with subscription
    }
    
    public async Task<Result<bool>> HasUserConfiguredStreaming()
    {
        await Task.Delay(100);
        return Result<bool>.Ok(false); // Test without streaming
    }
}
#endif

CoreError — Error codes returned by core methods
Authentication Guide — Complete login implementation guide
Dependency Injection — How [InjectLck] works
LckCore — Core initialization and setup

Unity SDK

API Reference

​What Problem Does This Solve?

​When to Use This

​Quick Example

​How It Works

​Login Flow

​Common Patterns

​Complete custom login flow

​Subscription gate for premium features

​Check streaming configuration before enabling streaming

​Conditional feature availability

​Dependency Injection

​API Reference

​StartLoginAttemptAsync()

​CheckLoginCompletedAsync()

​IsUserSubscribed()

​HasUserConfiguredStreaming()

​Login Flow Best Practices

​Good polling pattern

​Error Handling

​Custom Implementation Warning

​Testing Without Real Login

​Related

What Problem Does This Solve?

When to Use This

Quick Example

How It Works

Login Flow

Common Patterns

Complete custom login flow

Subscription gate for premium features

Check streaming configuration before enabling streaming

Conditional feature availability

Dependency Injection

API Reference

StartLoginAttemptAsync()

CheckLoginCompletedAsync()

IsUserSubscribed()

HasUserConfiguredStreaming()

Login Flow Best Practices

Good polling pattern

Error Handling

Custom Implementation Warning

Testing Without Real Login

Related