Improve Load Time of Artist Detail Page, and Wanted Page

src/Lidarr.Api.V3/Albums/AlbumModuleWithSignalR.cs

@@ -98,12 +98,9 @@ namespace Lidarr.Api.V3.Albums
                 }
             }
 
-            for (var i = 0; i < albums.Count; i++)
-            {
-                var resource = result[i];
-                FetchAndLinkAlbumStatistics(resource);
-            }
-
+            var artistList = albums.DistinctBy(a => a.ArtistId).ToList();
+            var artistStats = _artistStatisticsService.ArtistStatistics();
+            LinkArtistStatistics(result, artistStats);
 
             return result;
         }
@@ -113,6 +110,15 @@ namespace Lidarr.Api.V3.Albums
             LinkArtistStatistics(resource, _artistStatisticsService.ArtistStatistics(resource.ArtistId));
         }
 
+        private void LinkArtistStatistics(List<AlbumResource> resources, List<ArtistStatistics> artistStatistics)
+        {
+            foreach (var album in resources)
+            {
+                var stats = artistStatistics.SingleOrDefault(ss => ss.ArtistId == album.ArtistId);
+                LinkArtistStatistics(album, stats);
+            }
+        }
+
         private void LinkArtistStatistics(AlbumResource resource, ArtistStatistics artistStatistics)
         {
             if (artistStatistics.AlbumStatistics != null)

src/Lidarr.Api.V3/Wanted/MissingModule.cs

@@ -31,7 +31,7 @@ namespace Lidarr.Api.V3.Wanted
                 SortDirection = pagingResource.SortDirection
             };
 
-            var includeArtist = Request.GetBooleanQueryParameter("includeSeries");
+            var includeArtist = Request.GetBooleanQueryParameter("includeArtist");
 
             if (pagingResource.FilterKey == "monitored" && pagingResource.FilterValue == "false")
             {

src/NzbDrone.Core/Music/AlbumRepository.cs

@@ -80,29 +80,33 @@ namespace NzbDrone.Core.Music
         private QueryBuilder<Album> GetMissingAlbumsQuery(PagingSpec<Album> pagingSpec, DateTime currentTime)
         {
             string sortKey;
-            string monitored = "([t0].[Monitored] = 0) OR ([t1].[Monitored] = 0)";
+            string monitored = "(Albums.[Monitored] = 0) OR (Artists.[Monitored] = 0)";
 
             if (pagingSpec.FilterExpression.ToString().Contains("True"))
             {
-                monitored = "([t0].[Monitored] = 1) AND ([t1].[Monitored] = 1)";
+                monitored = "(Albums.[Monitored] = 1) AND (Artists.[Monitored] = 1)";
             }
 
             if (pagingSpec.SortKey == "releaseDate")
             {
-                sortKey = "[t0]." + pagingSpec.SortKey;
+                sortKey = "Albums." + pagingSpec.SortKey;
             }
             else if (pagingSpec.SortKey == "artist.sortName")
             {
-                sortKey = "[t1]." + pagingSpec.SortKey.Split('.').Last();
+                sortKey = "Artists." + pagingSpec.SortKey.Split('.').Last();
             }
             else
             {
-                sortKey = "[t0].releaseDate";
+                sortKey = "Albums.releaseDate";
             }
 
-                string query = string.Format("SELECT * FROM Albums [t0] INNER JOIN Artists [t1] ON ([t0].[ArtistId] = [t1].[Id])" +
-                    "WHERE ({0}) AND {1}" +
-                    " AND NOT EXISTS (SELECT 1 from Tracks [t2] WHERE [t2].albumId = [t0].id AND [t2].trackFileId <> 0) ORDER BY {2} {3} LIMIT {4} OFFSET {5}",
+            string query = string.Format("SELECT Albums.* FROM (SELECT Tracks.AlbumId, COUNT(*) AS TotalTrackCount," + "" +
+                "SUM(CASE WHEN TrackFileId > 0 THEN 1 ELSE 0 END) AS AvailableTrackCount FROM Tracks GROUP BY Tracks.ArtistId, Tracks.AlbumId) as Tracks" +
+                 " LEFT OUTER JOIN Albums ON Tracks.AlbumId == Albums.Id" +
+                 " LEFT OUTER JOIN Artists ON Albums.ArtistId == Artists.Id" +
+                 " WHERE Tracks.TotalTrackCount != Tracks.AvailableTrackCount AND ({0}) AND {1}" +
+                 " GROUP BY Tracks.AlbumId" +
+                 " ORDER BY {2} {3} LIMIT {4} OFFSET {5}",
                  monitored, BuildReleaseDateCutoffWhereClause(currentTime), sortKey, pagingSpec.ToSortDirection(), pagingSpec.PageSize, pagingSpec.PagingOffset());
 
             return Query.QueryText(query);
@@ -127,9 +131,12 @@ namespace NzbDrone.Core.Music
                 monitored = 1;
             }
 
-            string query = string.Format("SELECT * FROM Albums [t0] INNER JOIN Artists [t1] ON ([t0].[ArtistId] = [t1].[Id])" +
-                "WHERE (([t0].[Monitored] = {0}) AND ([t1].[Monitored] = {0})) AND {1}" +
-                " AND NOT EXISTS (SELECT 1 from Tracks [t2] WHERE [t2].albumId = [t0].id AND [t2].trackFileId <> 0)",
+            string query = string.Format("SELECT Albums.* FROM (SELECT Tracks.AlbumId, COUNT(*) AS TotalTrackCount," +
+                " SUM(CASE WHEN TrackFileId > 0 THEN 1 ELSE 0 END) AS AvailableTrackCount FROM Tracks GROUP BY Tracks.ArtistId, Tracks.AlbumId) as Tracks" +
+                " LEFT OUTER JOIN Albums ON Tracks.AlbumId == Albums.Id" +
+                " LEFT OUTER JOIN Artists ON Albums.ArtistId == Artists.Id" +
+                " WHERE Tracks.TotalTrackCount != Tracks.AvailableTrackCount AND ({0}) AND {1}" +
+                " GROUP BY Tracks.AlbumId",
                 monitored, BuildReleaseDateCutoffWhereClause(currentTime));
 
             return Query.QueryText(query).Count();
@@ -137,7 +144,7 @@ namespace NzbDrone.Core.Music
 
         private string BuildReleaseDateCutoffWhereClause(DateTime currentTime)
         {
-            return string.Format("datetime(strftime('%s', [t0].[ReleaseDate]),  'unixepoch') <= '{0}'",
+            return string.Format("datetime(strftime('%s', Albums.[ReleaseDate]),  'unixepoch') <= '{0}'",
                                  currentTime.ToString("yyyy-MM-dd HH:mm:ss"));
         }