fix: NRE due to null RootConfigYaml

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Clone config template repo when `config create -t` is used.
+- Fix error when completely commenting out a YAML configuration file (#190).
 
 ## [5.1.0] - 2023-06-26
 

src/Recyclarr.TrashLib/Config/ConfigExtensions.cs

@@ -18,10 +18,10 @@ public static class ConfigExtensions
         return configs.Any(x => x.InstanceName.EqualsIgnoreCase(name));
     }
 
-    public static bool IsConfigEmpty(this RootConfigYaml config)
+    public static bool IsConfigEmpty(this RootConfigYaml? config)
     {
-        var sonarr = config.Sonarr?.Count ?? 0;
-        var radarr = config.Radarr?.Count ?? 0;
+        var sonarr = config?.Sonarr?.Count ?? 0;
+        var radarr = config?.Radarr?.Count ?? 0;
         return sonarr + radarr == 0;
     }
 }

src/Recyclarr.TrashLib/Config/Parsing/ConfigParser.cs

@@ -38,7 +38,7 @@ public class ConfigParser
         try
         {
             using var stream = streamFactory();
-            var config = _deserializer.Deserialize<RootConfigYaml>(stream);
+            var config = _deserializer.Deserialize<RootConfigYaml?>(stream);
             if (config.IsConfigEmpty())
             {
                 _log.Warning("Configuration is empty");