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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;
namespace Jellyfin.Server.Implementations.Item;
/// <summary>
/// The Chapter manager.
/// </summary>
public class ChapterRepository : IChapterRepository
{
private readonly IDbContextFactory<JellyfinDbContext> _dbProvider;
private readonly IImageProcessor _imageProcessor;
/// <summary>
/// Initializes a new instance of the <see cref="ChapterRepository"/> class.
/// </summary>
/// <param name="dbProvider">The EFCore provider.</param>
/// <param name="imageProcessor">The Image Processor.</param>
public ChapterRepository(IDbContextFactory<JellyfinDbContext> dbProvider, IImageProcessor imageProcessor)
{
_dbProvider = dbProvider;
_imageProcessor = imageProcessor;
}
/// <inheritdoc cref="IChapterRepository"/>
public ChapterInfo? GetChapter(BaseItemDto baseItem, int index)
{
return GetChapter(baseItem.Id, index);
}
/// <inheritdoc cref="IChapterRepository"/>
public IReadOnlyList<ChapterInfo> GetChapters(BaseItemDto baseItem)
{
return GetChapters(baseItem.Id);
}
/// <inheritdoc cref="IChapterRepository"/>
public ChapterInfo? GetChapter(Guid baseItemId, int index)
{
using var context = _dbProvider.CreateDbContext();
var chapter = context.Chapters.AsNoTracking()
.Select(e => new
{
chapter = e,
baseItemPath = e.Item.Path
})
.FirstOrDefault(e => e.chapter.ItemId.Equals(baseItemId) && e.chapter.ChapterIndex == index);
if (chapter is not null)
{
return Map(chapter.chapter, chapter.baseItemPath!);
}
return null;
}
/// <inheritdoc cref="IChapterRepository"/>
public IReadOnlyList<ChapterInfo> GetChapters(Guid baseItemId)
{
using var context = _dbProvider.CreateDbContext();
return context.Chapters.AsNoTracking().Where(e => e.ItemId.Equals(baseItemId))
.Select(e => new
{
chapter = e,
baseItemPath = e.Item.Path
})
.ToList()
.Select(e => Map(e.chapter, e.baseItemPath!))
.ToArray();
}
/// <inheritdoc cref="IChapterRepository"/>
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)
{
return new Chapter()
{
ChapterIndex = index,
StartPositionTicks = chapterInfo.StartPositionTicks,
ImageDateModified = chapterInfo.ImageDateModified,
ImagePath = chapterInfo.ImagePath,
ItemId = itemId,
Name = chapterInfo.Name,
Item = null!
};
}
private ChapterInfo Map(Chapter chapterInfo, string baseItemPath)
{
var chapterEntity = new ChapterInfo()
{
StartPositionTicks = chapterInfo.StartPositionTicks,
ImageDateModified = chapterInfo.ImageDateModified.GetValueOrDefault(),
ImagePath = chapterInfo.ImagePath,
Name = chapterInfo.Name,
};
chapterEntity.ImageTag = _imageProcessor.GetImageCacheTag(baseItemPath, chapterEntity.ImageDateModified);
return chapterEntity;
}
}
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