Fixed: (AvistaZ) Allow search by episode

src/NzbDrone.Core/Indexers/Definitions/AvistaZ.cs

@@ -1,7 +1,9 @@
 using System.Collections.Generic;
 using NLog;
+using NzbDrone.Common.Extensions;
 using NzbDrone.Core.Configuration;
 using NzbDrone.Core.Indexers.Definitions.Avistaz;
+using NzbDrone.Core.IndexerSearch.Definitions;
 using NzbDrone.Core.Messaging.Events;
 
 namespace NzbDrone.Core.Indexers.Definitions
@@ -23,6 +25,18 @@ namespace NzbDrone.Core.Indexers.Definitions
         {
         }
 
+        public override IIndexerRequestGenerator GetRequestGenerator()
+        {
+            return new AvistaZRequestGenerator
+            {
+                Settings = Settings,
+                Capabilities = Capabilities,
+                PageSize = PageSize,
+                HttpClient = _httpClient,
+                Logger = _logger
+            };
+        }
+
         public override IParseIndexerResponse GetParser()
         {
             return new AvistaZParser();
@@ -57,6 +71,17 @@ namespace NzbDrone.Core.Indexers.Definitions
         }
     }
 
+    public class AvistaZRequestGenerator : AvistazRequestGenerator
+    {
+        // AvistaZ has episodes without season. eg Running Man E323
+        protected override string GetEpisodeSearchTerm(TvSearchCriteria searchCriteria)
+        {
+            return searchCriteria.Season is null or 0 && searchCriteria.Episode.IsNotNullOrWhiteSpace()
+                ? $"E{searchCriteria.Episode}"
+                : $"{searchCriteria.EpisodeSearchString}";
+        }
+    }
+
     public class AvistaZParser : AvistazParserBase
     {
         protected override string TimezoneOffset => "+02:00";