New: Index priority

frontend/src/Settings/Indexers/Indexers/EditIndexerModalContent.js

@@ -42,7 +42,8 @@ function EditIndexerModalContent(props) {
     enableInteractiveSearch,
     supportsRss,
     supportsSearch,
-    fields
+    fields,
+    priority
   } = item;
 
   return (
@@ -131,7 +132,21 @@ function EditIndexerModalContent(props) {
                   );
                 })
               }
+               <FormGroup
+                  advancedSettings={advancedSettings}
+                  isAdvanced={true}>
+                <FormLabel>Indexer Priority</FormLabel>
 
+                <FormInputGroup
+                  type={inputTypes.NUMBER}
+                  name="priority"
+                  helpText="Indexer Priority from 1 (Highest) to 50 (Lowest). Default: 25."
+                  min={1}
+                  max={50}
+                  {...priority}
+                  onChange={onInputChange}
+                />
+              </FormGroup>
             </Form>
         }
       </ModalBody>

frontend/src/Settings/Indexers/Indexers/Indexer.js

@@ -68,7 +68,9 @@ class Indexer extends Component {
       enableAutomaticSearch,
       enableInteractiveSearch,
       supportsRss,
-      supportsSearch
+      supportsSearch,
+      priority,
+      showPriority
     } = this.props;
 
     return (
@@ -113,6 +115,12 @@ class Indexer extends Component {
               </Label>
           }
           
+          {
+            showPriority &&
+              <Label kind={kinds.DEFAULT}>
+                Priority: {priority}
+              </Label>
+          }
           {
             !enableRss && !enableAutomaticSearch && !enableInteractiveSearch &&
               <Label

frontend/src/Settings/Indexers/Indexers/Indexers.js

@@ -63,6 +63,8 @@ class Indexers extends Component {
       isEditIndexerModalOpen
     } = this.state;
     
+    const showPriority = items.some((index) => index.priority != 25);
+
     return (
       <FieldSet legend="Indexers">
         <PageSectionContent
@@ -76,6 +78,7 @@ class Indexers extends Component {
                   <Indexer
                     key={item.id}
                     {...item}
+                    showPriority={showPriority}
                     onCloneIndexerPress={this.onCloneIndexerPress}
                     onConfirmDeleteIndexer={onConfirmDeleteIndexer}
                   />

src/Lidarr.Api.V1/Indexers/IndexerResource.cs

@@ -10,6 +10,7 @@ namespace Lidarr.Api.V1.Indexers
         public bool SupportsRss { get; set; }
         public bool SupportsSearch { get; set; }
         public DownloadProtocol Protocol { get; set; }
+        public int Priority { get; set; }
     }
 
     public class IndexerResourceMapper : ProviderResourceMapper<IndexerResource, IndexerDefinition>
@@ -29,6 +30,7 @@ namespace Lidarr.Api.V1.Indexers
             resource.SupportsRss = definition.SupportsRss;
             resource.SupportsSearch = definition.SupportsSearch;
             resource.Protocol = definition.Protocol;
+            resource.Priority = definition.Priority;
 
             return resource;
         }
@@ -45,6 +47,7 @@ namespace Lidarr.Api.V1.Indexers
             definition.EnableRss = resource.EnableRss;
             definition.EnableAutomaticSearch = resource.EnableAutomaticSearch;
             definition.EnableInteractiveSearch = resource.EnableInteractiveSearch;
+            definition.Priority = resource.Priority;
 
             return definition;
         }

src/NzbDrone.Core.Test/DecisionEngineTests/PrioritizeDownloadDecisionFixture.cs

@@ -34,7 +34,7 @@ namespace NzbDrone.Core.Test.DecisionEngineTests
                             .Build();
         }
 
-        private RemoteAlbum GivenRemoteAlbum(List<Album> albums, QualityModel quality, int age = 0, long size = 0, DownloadProtocol downloadProtocol = DownloadProtocol.Usenet)
+        private RemoteAlbum GivenRemoteAlbum(List<Album> albums, QualityModel quality, int age = 0, long size = 0, DownloadProtocol downloadProtocol = DownloadProtocol.Usenet, int indexerPriority = 25)
         {
             var remoteAlbum = new RemoteAlbum();
             remoteAlbum.ParsedAlbumInfo = new ParsedAlbumInfo();
@@ -47,6 +47,7 @@ namespace NzbDrone.Core.Test.DecisionEngineTests
             remoteAlbum.Release.PublishDate = DateTime.Now.AddDays(-age);
             remoteAlbum.Release.Size = size;
             remoteAlbum.Release.DownloadProtocol = downloadProtocol;
+            remoteAlbum.Release.IndexerPriority = indexerPriority;
 
             remoteAlbum.Artist = Builder<Artist>.CreateNew()
                                                 .With(e => e.QualityProfile = new QualityProfile
@@ -514,5 +515,39 @@ namespace NzbDrone.Core.Test.DecisionEngineTests
             qualifiedReports.First().RemoteAlbum.ParsedAlbumInfo.Quality.Revision.Real.Should().Be(0);
             qualifiedReports.First().RemoteAlbum.PreferredWordScore.Should().Be(10);
         }
+
+        [Test]
+        public void sort_download_decisions_based_on_indexer_priority()
+        {
+            var remoteAlbum1 = GivenRemoteAlbum(new List<Album> { GivenAlbum(1) }, new QualityModel(Quality.FLAC, new Revision(1)), indexerPriority: 25);
+            var remoteAlbum2 = GivenRemoteAlbum(new List<Album> { GivenAlbum(1) }, new QualityModel(Quality.FLAC, new Revision(1)), indexerPriority: 50);
+            var remoteAlbum3 = GivenRemoteAlbum(new List<Album> { GivenAlbum(1) }, new QualityModel(Quality.FLAC, new Revision(1)), indexerPriority: 1);
+
+            var decisions = new List<DownloadDecision>();
+            decisions.AddRange(new[] { new DownloadDecision(remoteAlbum1), new DownloadDecision(remoteAlbum2), new DownloadDecision(remoteAlbum3) });
+
+            var qualifiedReports = Subject.PrioritizeDecisions(decisions);
+            qualifiedReports.First().RemoteAlbum.Should().Be(remoteAlbum3);
+            qualifiedReports.Skip(1).First().RemoteAlbum.Should().Be(remoteAlbum1);
+            qualifiedReports.Last().RemoteAlbum.Should().Be(remoteAlbum2);
+        }
+
+        [Test]
+        public void ensure_download_decisions_indexer_priority_is_not_perfered_over_quality()
+        {
+            var remoteAlbum1 = GivenRemoteAlbum(new List<Album> { GivenAlbum(1) }, new QualityModel(Quality.MP3_320, new Revision(1)), indexerPriority: 25);
+            var remoteAlbum2 = GivenRemoteAlbum(new List<Album> { GivenAlbum(1) }, new QualityModel(Quality.FLAC, new Revision(1)), indexerPriority: 50);
+            var remoteAlbum3 = GivenRemoteAlbum(new List<Album> { GivenAlbum(1) }, new QualityModel(Quality.MP3_128, new Revision(1)), indexerPriority: 1);
+            var remoteAlbum4 = GivenRemoteAlbum(new List<Album> { GivenAlbum(1) }, new QualityModel(Quality.FLAC, new Revision(1)), indexerPriority: 25);
+
+            var decisions = new List<DownloadDecision>();
+            decisions.AddRange(new[] { new DownloadDecision(remoteAlbum1), new DownloadDecision(remoteAlbum2), new DownloadDecision(remoteAlbum3), new DownloadDecision(remoteAlbum4) });
+
+            var qualifiedReports = Subject.PrioritizeDecisions(decisions);
+            qualifiedReports.First().RemoteAlbum.Should().Be(remoteAlbum4);
+            qualifiedReports.Skip(1).First().RemoteAlbum.Should().Be(remoteAlbum2);
+            qualifiedReports.Skip(2).First().RemoteAlbum.Should().Be(remoteAlbum1);
+            qualifiedReports.Last().RemoteAlbum.Should().Be(remoteAlbum3);
+        }
     }
 }

src/NzbDrone.Core/Datastore/Migration/044_add_priority_to_indexers.cs

@@ -0,0 +1,14 @@
+using FluentMigrator;
+using NzbDrone.Core.Datastore.Migration.Framework;
+
+namespace NzbDrone.Core.Datastore.Migration
+{
+    [Migration(044)]
+    public class add_priority_to_indexers : NzbDroneMigrationBase
+    {
+        protected override void MainDbUpgrade()
+        {
+            Alter.Table("Indexers").AddColumn("Priority").AsInt32().NotNullable().WithDefaultValue(25);
+        }
+    }
+}

src/NzbDrone.Core/DecisionEngine/DownloadDecisionComparer.cs

@@ -30,6 +30,7 @@ namespace NzbDrone.Core.DecisionEngine
                 CompareQuality,
                 ComparePreferredWordScore,
                 CompareProtocol,
+                CompareIndexerPriority,
                 ComparePeersIfTorrent,
                 CompareAlbumCount,
                 CompareAgeIfUsenet,
@@ -59,6 +60,11 @@ namespace NzbDrone.Core.DecisionEngine
             return comparers.Select(comparer => comparer).FirstOrDefault(result => result != 0);
         }
 
+        private int CompareIndexerPriority(DownloadDecision x, DownloadDecision y)
+        {
+            return CompareByReverse(x.RemoteAlbum.Release, y.RemoteAlbum.Release, release => release.IndexerPriority);
+        }
+
         private int CompareQuality(DownloadDecision x, DownloadDecision y)
         {
             if (_configService.DownloadPropersAndRepacks == ProperDownloadTypes.DoNotPrefer)

src/NzbDrone.Core/Download/ProcessDownloadDecisions.cs

@@ -74,6 +74,7 @@ namespace NzbDrone.Core.Download
 
                 try
                 {
+                    _logger.Trace("Grabbing from Indexer {0} at priority {1}.", remoteAlbum.Release.Indexer, remoteAlbum.Release.IndexerPriority);
                     _downloadService.DownloadReport(remoteAlbum);
                     grabbed.Add(report);
                 }

src/NzbDrone.Core/Indexers/IndexerBase.cs

@@ -22,6 +22,7 @@ namespace NzbDrone.Core.Indexers
 
         public abstract string Name { get; }
         public abstract DownloadProtocol Protocol { get; }
+        public int Priority { get; set; }
 
         public abstract bool SupportsRss { get; }
         public abstract bool SupportsSearch { get; }
@@ -80,6 +81,7 @@ namespace NzbDrone.Core.Indexers
                 c.IndexerId = Definition.Id;
                 c.Indexer = Definition.Name;
                 c.DownloadProtocol = Protocol;
+                c.IndexerPriority = ((IndexerDefinition)Definition).Priority;
             });
 
             return result;

src/NzbDrone.Core/Indexers/IndexerDefinition.cs

@@ -10,6 +10,7 @@ namespace NzbDrone.Core.Indexers
         public DownloadProtocol Protocol { get; set; }
         public bool SupportsRss { get; set; }
         public bool SupportsSearch { get; set; }
+        public int Priority { get; set; } = 25;
 
         public override bool Enable => EnableRss || EnableAutomaticSearch || EnableInteractiveSearch;
 

src/NzbDrone.Core/Parser/Model/ReleaseInfo.cs

@@ -17,6 +17,7 @@ namespace NzbDrone.Core.Parser.Model
         public string Indexer { get; set; }
         public string Artist { get; set; }
         public string Album { get; set; }
+        public int IndexerPriority { get; set; }
         public DownloadProtocol DownloadProtocol { get; set; }
         public DateTime PublishDate { get; set; }