google auth fix

src/Backend/DiunaBI.Infrastructure/Services/GoogleSheetsHelper.cs

@@ -31,8 +31,25 @@ public class GoogleSheetsHelper
         var json = Environment.GetEnvironmentVariable("GOOGLE_SERVICE_ACCOUNT_JSON");
         if (string.IsNullOrWhiteSpace(json))
             throw new InvalidOperationException("GOOGLE_SERVICE_ACCOUNT_JSON environment variable is not set.");
+
+        Console.WriteLine($"[GoogleSheetsHelper] Original JSON length: {json.Length}");
+        Console.WriteLine($"[GoogleSheetsHelper] First 200 chars: {json.Substring(0, Math.Min(200, json.Length))}");
+
+        // Replace literal \n with actual newlines
         json = json.Replace("\\n", "\n");
-        return GoogleCredential.FromJson(json).CreateScoped(Scopes);
+
+        Console.WriteLine($"[GoogleSheetsHelper] After replacement, first 200 chars: {json.Substring(0, Math.Min(200, json.Length))}");
+
+        try
+        {
+            return GoogleCredential.FromJson(json).CreateScoped(Scopes);
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine($"[GoogleSheetsHelper] ERROR parsing JSON: {ex.Message}");
+            Console.WriteLine($"[GoogleSheetsHelper] JSON being parsed: {json}");
+            throw;
+        }
 #endif
     }
 }