scanning and poster improvements (#24)

* first pass at refresh-all-metadata by source * add version to startup logs * lock media source during refresh * fix local media source "name" in collection editor * optimize scanning so playouts only rebuild when necessary * support more poster file types * more scanning improvements; check for missing posters during scans
2021-02-14 17:04:50 +00:00
parent 2c9d4d796a
commit 1aac2f13c9
28 changed files with 378 additions and 99 deletions
@@ -0,0 +1,64 @@
+using System;
+using System.IO;
+using System.Linq;
+using ErsatzTV.Core.Domain;
+using ErsatzTV.Core.Interfaces.Metadata;
+using LanguageExt;
+using static LanguageExt.Prelude;
+
+namespace ErsatzTV.Core.Metadata
+{
+    public class LocalFileSystem : ILocalFileSystem
+    {
+        public bool IsMediaSourceAccessible(LocalMediaSource localMediaSource) =>
+            Directory.Exists(localMediaSource.Folder);
+
+        public Seq<string> FindRelevantVideos(LocalMediaSource localMediaSource)
+        {
+            Seq<string> allDirectories = Directory
+                .GetDirectories(localMediaSource.Folder, "*", SearchOption.AllDirectories)
+                .ToSeq()
+                .Add(localMediaSource.Folder);
+
+            // remove any directories with an .etvignore file locally, or in any parent directory
+            Seq<string> excluded = allDirectories.Filter(ShouldExcludeDirectory);
+            Seq<string> relevantDirectories = allDirectories
+                .Filter(d => !excluded.Any(d.StartsWith))
+                .Filter(d => localMediaSource.MediaType == MediaType.Other || !IsExtrasFolder(d));
+
+            return relevantDirectories
+                .Collect(d => Directory.GetFiles(d, "*", SearchOption.TopDirectoryOnly))
+                .Filter(file => KnownExtensions.Contains(Path.GetExtension(file)))
+                .OrderBy(identity)
+                .ToSeq();
+        }
+
+        public bool ShouldRefreshMetadata(LocalMediaSource localMediaSource, MediaItem mediaItem)
+        {
+            DateTime lastWrite = File.GetLastWriteTimeUtc(mediaItem.Path);
+            bool modified = lastWrite > mediaItem.LastWriteTime.IfNone(DateTime.MinValue);
+            return modified // media item has been modified
+                   || mediaItem.Metadata == null // media item has no metadata
+                   || mediaItem.Metadata.MediaType != localMediaSource.MediaType; // media item is typed incorrectly
+        }
+
+        public bool ShouldRefreshPoster(MediaItem mediaItem) =>
+            string.IsNullOrWhiteSpace(mediaItem.Poster);
+
+        private static bool ShouldExcludeDirectory(string path) => File.Exists(Path.Combine(path, ".etvignore"));
+
+        // see https://support.emby.media/support/solutions/articles/44001159102-movie-naming
+        private static bool IsExtrasFolder(string path) =>
+            ExtraFolderNames.Contains(Path.GetFileName(path)?.ToLowerInvariant());
+
+        // @formatter:off
+        private static readonly Seq<string> KnownExtensions = Seq(
+            ".mpg", ".mp2", ".mpeg", ".mpe", ".mpv", ".ogg", ".mp4",
+            ".m4p", ".m4v", ".avi", ".wmv", ".mov", ".mkv", ".ts");
+        
+        private static readonly Seq<string> ExtraFolderNames = Seq(
+            "extras", "specials", "shorts", "scenes", "featurettes",
+            "behind the scenes", "deleted scenes", "interviews", "trailers");
+        // @formatter:on
+    }
+}