added category change for downloads with no additional hardlinks

code/Common/Configuration/DownloadCleaner/DownloadCleanerConfig.cs

@@ -8,11 +8,17 @@ public sealed record DownloadCleanerConfig : IJobConfig
     public const string SectionName = "DownloadCleaner";
     
     public bool Enabled { get; init; }
-    
-    public List<Category>? Categories { get; init; }
+
+    public List<CleanCategory>? Categories { get; init; }
 
     [ConfigurationKeyName("DELETE_PRIVATE")]
-    public bool DeletePrivate { get; set; }
+    public bool DeletePrivate { get; init; }
+
+    [ConfigurationKeyName("NO_HARDLINKS_CATEGORY")]
+    public string NoHardlinksCategory { get; init; } = "";
+
+    [ConfigurationKeyName("HARDLINK_CATEGORIES")]
+    public List<string>? HardlinkCategories { get; init; }
 
     public void Validate()
     {
@@ -32,5 +38,25 @@ public sealed record DownloadCleanerConfig : IJobConfig
         }
         
         Categories?.ForEach(x => x.Validate());
+        
+        if (string.IsNullOrEmpty(NoHardlinksCategory))
+        {
+            return;
+        }
+
+        if (HardlinkCategories?.Count is null or 0)
+        {
+            throw new ValidationException("no categories configured");
+        }
+
+        if (HardlinkCategories.Contains(NoHardlinksCategory))
+        {
+            throw new ValidationException("NO_HARDLINKS_CATEGORY is present in the list of filtered categories");
+        }
+
+        if (HardlinkCategories.Any(string.IsNullOrEmpty))
+        {
+            throw new ValidationException("empty hardlink filter category found");
+        }
     }
 }