WIP BaseItem search refactoring

Jellyfin.Server.Implementations/Item/ChapterManager.cs

@@ -1,26 +1,74 @@
 using System;
 using System.Collections.Generic;
+using System.Collections.Immutable;
 using System.Linq;
 using Jellyfin.Data.Entities;
+using MediaBrowser.Controller.Chapters;
+using MediaBrowser.Controller.Drawing;
+using MediaBrowser.Model.Dto;
 using MediaBrowser.Model.Entities;
 using Microsoft.EntityFrameworkCore;
-using BaseItemDto = MediaBrowser.Controller.Entities.BaseItem;
 
 namespace Jellyfin.Server.Implementations.Item;
 
-public class ChapterManager
+/// <summary>
+/// The Chapter manager.
+/// </summary>
+public class ChapterManager : IChapterManager
 {
     private readonly IDbContextFactory<JellyfinDbContext> _dbProvider;
+    private readonly IImageProcessor _imageProcessor;
 
-    public ChapterManager(IDbContextFactory<JellyfinDbContext> dbProvider)
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ChapterManager"/> class.
+    /// </summary>
+    /// <param name="dbProvider">The EFCore provider.</param>
+    /// <param name="imageProcessor">The Image Processor.</param>
+    public ChapterManager(IDbContextFactory<JellyfinDbContext> dbProvider, IImageProcessor imageProcessor)
     {
         _dbProvider = dbProvider;
+        _imageProcessor = imageProcessor;
     }
 
-    public IReadOnlyList<ChapterInfo> GetChapters(BaseItemDto baseItemDto)
+    /// <inheritdoc cref="IChapterManager"/>
+    public ChapterInfo? GetChapter(BaseItemDto baseItem, int index)
     {
         using var context = _dbProvider.CreateDbContext();
-        return context.Chapters.Where(e => e.ItemId.Equals(baseItemDto.Id)).Select(Map).ToList();
+        var chapter = context.Chapters.FirstOrDefault(e => e.ItemId.Equals(baseItem.Id) && e.ChapterIndex == index);
+        if (chapter is not null)
+        {
+            return Map(chapter, baseItem);
+        }
+
+        return null;
+    }
+
+    /// <inheritdoc cref="IChapterManager"/>
+    public IReadOnlyList<ChapterInfo> GetChapters(BaseItemDto baseItem)
+    {
+        using var context = _dbProvider.CreateDbContext();
+        return context.Chapters.Where(e => e.ItemId.Equals(baseItem.Id))
+            .ToList()
+            .Select(e => Map(e, baseItem))
+            .ToImmutableArray();
+    }
+
+    /// <inheritdoc cref="IChapterManager"/>
+    public void SaveChapters(Guid itemId, IReadOnlyList<ChapterInfo> chapters)
+    {
+        using var context = _dbProvider.CreateDbContext();
+        using (var transaction = context.Database.BeginTransaction())
+        {
+            context.Chapters.Where(e => e.ItemId.Equals(itemId)).ExecuteDelete();
+            for (var i = 0; i < chapters.Count; i++)
+            {
+                var chapter = chapters[i];
+                context.Chapters.Add(Map(chapter, i, itemId));
+            }
+
+            context.SaveChanges();
+            transaction.Commit();
+        }
     }
 
     private Chapter Map(ChapterInfo chapterInfo, int index, Guid itemId)