merge other video folder tags with nfo tags (#1144)

CHANGELOG.md

@@ -13,6 +13,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Fix playback of content with undefined colorspace
 - Fix NVIDIA color normalization with VP9 sources
 
+### Changed
+- Merge generated `Other Video` folder tags with tags from sidecar NFO
+
 ## [0.7.3-beta] - 2023-01-25
 ### Added
 - Attempt to release memory periodically

ErsatzTV.Infrastructure/Migrations/20230201112630_Reset_OtherVideoMetadataTags.cs

@@ -0,0 +1,24 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace ErsatzTV.Infrastructure.Migrations
+{
+    /// <inheritdoc />
+    public partial class ResetOtherVideoMetadataTags : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.Sql("UPDATE OtherVideoMetadata SET DateUpdated = '0001-01-01 00:00:00' WHERE OtherVideoId IN (SELECT OtherVideoId FROM OtherVideoMetadata WHERE MetadataKind = 1)");
+            migrationBuilder.Sql("UPDATE LibraryFolder SET Etag = NULL WHERE Id IN (SELECT LF.Id FROM LibraryFolder LF INNER JOIN LibraryPath LP on LP.Id = LF.LibraryPathId INNER JOIN Library L on L.Id = LP.LibraryId WHERE MediaKind = 4)");
+            migrationBuilder.Sql("UPDATE LibraryPath SET LastScan = '0001-01-01 00:00:00' WHERE Id IN (SELECT LP.Id FROM LibraryPath LP INNER JOIN Library L on L.Id = LP.LibraryId WHERE MediaKind = 4)");
+            migrationBuilder.Sql("UPDATE Library SET LastScan = '0001-01-01 00:00:00' WHERE MediaKind = 4");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+        }
+    }
+}

ErsatzTV.Scanner/Core/Metadata/LocalMetadataProvider.cs

@@ -168,6 +168,25 @@ public class LocalMetadataProvider : ILocalMetadataProvider
         Option<OtherVideoMetadata> maybeMetadata = await LoadOtherVideoMetadata(nfoFileName);
         foreach (OtherVideoMetadata metadata in maybeMetadata)
         {
+            // merge path-based tags with nfo tags
+            string? folder = Path.GetDirectoryName(nfoFileName);
+            if (folder != null)
+            {
+                string libraryPath = otherVideo.LibraryPath.Path;
+                string parent = Optional(Directory.GetParent(libraryPath)).Match(
+                    di => di.FullName,
+                    () => libraryPath);
+
+                string diff = Path.GetRelativePath(parent, folder);
+
+                var tags = diff.Split(Path.DirectorySeparatorChar)
+                    .Filter(t => metadata.Tags.Any(mt => mt.Name == t) == false)
+                    .Map(t => new Tag { Name = t })
+                    .ToList();
+
+                metadata.Tags.AddRange(tags);
+            }
+
             return await ApplyMetadataUpdate(otherVideo, metadata);
         }