cleaned up episode search

NzbDrone.Core/DecisionEngine/DownloadDirector.cs

@@ -0,0 +1,32 @@
+using System.Collections.Generic;
+using System.Linq;
+using NzbDrone.Core.Model;
+
+namespace NzbDrone.Core.DecisionEngine
+{
+    public interface IDownloadDirector
+    {
+        DownloadDecision GetDownloadDecision(EpisodeParseResult episodeParseResult);
+    }
+
+    public class DownloadDirector : IDownloadDirector
+    {
+        private readonly IEnumerable<IFetchableSpecification> _specifications;
+
+        public DownloadDirector(IEnumerable<IFetchableSpecification> specifications)
+        {
+            _specifications = specifications;
+        }
+
+        public DownloadDecision GetDownloadDecision(EpisodeParseResult episodeParseResult)
+        {
+            var rejections = _specifications
+                .Where(spec => !spec.IsSatisfiedBy(episodeParseResult))
+                .Select(spec => spec.RejectionReason).ToArray();
+
+            episodeParseResult.Decision = new DownloadDecision(rejections);
+
+            return episodeParseResult.Decision;
+        }
+    }
+}