Naming refactoring and WIP porting of new interface repositories

Jellyfin.Server.Implementations/Item/MediaAttachmentRepository.cs

@@ -0,0 +1,73 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.Immutable;
+using System.Linq;
+using System.Threading;
+using Jellyfin.Data.Entities;
+using MediaBrowser.Controller.Persistence;
+using MediaBrowser.Model.Entities;
+using Microsoft.EntityFrameworkCore;
+
+namespace Jellyfin.Server.Implementations.Item;
+
+/// <summary>
+/// Manager for handling Media Attachments.
+/// </summary>
+/// <param name="dbProvider">Efcore Factory.</param>
+public class MediaAttachmentRepository(IDbContextFactory<JellyfinDbContext> dbProvider) : IMediaAttachmentRepository
+{
+    /// <inheritdoc />
+    public void SaveMediaAttachments(
+        Guid id,
+        IReadOnlyList<MediaAttachment> attachments,
+        CancellationToken cancellationToken)
+    {
+        using var context = dbProvider.CreateDbContext();
+        using var transaction = context.Database.BeginTransaction();
+        context.AttachmentStreamInfos.Where(e => e.ItemId.Equals(id)).ExecuteDelete();
+        context.AttachmentStreamInfos.AddRange(attachments.Select(e => Map(e, id)));
+        context.SaveChanges();
+        transaction.Commit();
+    }
+
+    /// <inheritdoc />
+    public IReadOnlyList<MediaAttachment> GetMediaAttachments(MediaAttachmentQuery filter)
+    {
+        using var context = dbProvider.CreateDbContext();
+        var query = context.AttachmentStreamInfos.Where(e => e.ItemId.Equals(filter.ItemId));
+        if (filter.Index.HasValue)
+        {
+            query = query.Where(e => e.Index == filter.Index);
+        }
+
+        return query.ToList().Select(Map).ToImmutableArray();
+    }
+
+    private MediaAttachment Map(AttachmentStreamInfo attachment)
+    {
+        return new MediaAttachment()
+        {
+            Codec = attachment.Codec,
+            CodecTag = attachment.CodecTag,
+            Comment = attachment.Comment,
+            FileName = attachment.Filename,
+            Index = attachment.Index,
+            MimeType = attachment.MimeType,
+        };
+    }
+
+    private AttachmentStreamInfo Map(MediaAttachment attachment, Guid id)
+    {
+        return new AttachmentStreamInfo()
+        {
+            Codec = attachment.Codec,
+            CodecTag = attachment.CodecTag,
+            Comment = attachment.Comment,
+            Filename = attachment.FileName,
+            Index = attachment.Index,
+            MimeType = attachment.MimeType,
+            ItemId = id,
+            Item = null!
+        };
+    }
+}