Refactored the google sign in manager

Assets/GoogleSigninSDK/GoogleSignInManager.cs

@@ -39,7 +39,7 @@ public class GoogleSignInManager : MonoBehaviour
         guestLoginButton.onClick.RemoveAllListeners();
         guestLoginButton.onClick.AddListener(GuestLogin);
 
-        if (PlayerPrefs.HasKey("PlayFabID") && !PlayerPrefs.HasKey("GuestMode"))
+        if (PlayerPrefs.HasKey("PlayFabID") && PlayerPrefs.HasKey("GoogleAuthCode"))
         {
             Debug.Log("User previously signed in with Google. Attempting silent login...");
             googleSignInButton.gameObject.SetActive(false);
@@ -141,43 +141,20 @@ public class GoogleSignInManager : MonoBehaviour
     {
         Debug.Log("Attempting Google Silent Sign-In...");
 
-        configuration = new GoogleSignInConfiguration
-        {
-            WebClientId = GameConstants.Web_ClientID,
-            RequestEmail = true,
-            RequestAuthCode = true,
-            ForceTokenRefresh =  true
-        };
-        
-        // GoogleSignIn.DefaultInstance.SignIn().ContinueWith(OnGoogleSignIn);
-        
-        GoogleSignIn.DefaultInstance.SignInSilently().ContinueWith(task =>
+        string storedAuthCode = PlayerPrefs.GetString("GoogleAuthCode");
+        if (string.IsNullOrEmpty(storedAuthCode))
         {
-            if (task.IsFaulted || task.IsCanceled)
-            {
-                Debug.LogWarning("Silent Sign-In failed. Showing login buttons.");
-                googleSignInButton.gameObject.SetActive(true);
-                googleSignInButton.interactable = true;
-        
-                guestLoginButton.gameObject.SetActive(true);
-                guestLoginButton.interactable = true;
-                return;
-            }
-        
-            string authCode = task.Result.AuthCode;
+            Debug.LogWarning("No stored auth code found. Redirecting to Google Sign-In...");
+            googleSignInButton.gameObject.SetActive(true);
+            googleSignInButton.interactable = true;
+            guestLoginButton.gameObject.SetActive(true);
+            guestLoginButton.interactable = true;
+            SignInWithGoogle();
+            return;
+        }
 
-            if (string.IsNullOrEmpty(authCode))
-            {
-                Debug.LogError("Silent Sign-In succeeded but authCode is NULL!");
-            }
-            else
-            {
-                Debug.Log("[Silent Sign-In] AuthCode: " + authCode);
-                SafePlayerPrefs.SetString("GoogleAuthCode", authCode);
-                PlayerPrefs.Save();
-                LoginToPlayFab(authCode);
-            }
-        });
+        Debug.Log("[Silent Sign-In] Using stored auth code.");
+        LoginToPlayFab(storedAuthCode);
     }
 
     private void LoginToPlayFab(string authCode)