jellyfin/MediaBrowser.Controller/Resolvers/BaseItemResolver.cs

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using System;
using System.IO;
using MediaBrowser.Controller.Events;
using MediaBrowser.Controller.IO;
using MediaBrowser.Model.Entities;
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namespace MediaBrowser.Controller.Resolvers
{
public abstract class BaseItemResolver<T> : IBaseItemResolver
where T : BaseItem, new()
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{
protected virtual T Resolve(ItemResolveEventArgs args)
{
return null;
}
public virtual ResolverPriority Priority
{
get
{
return ResolverPriority.First;
}
}
/// <summary>
/// Sets initial values on the newly resolved item
/// </summary>
protected virtual void SetInitialItemValues(T item, ItemResolveEventArgs args)
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{
// If the subclass didn't specify this
if (string.IsNullOrEmpty(item.Path))
{
item.Path = args.Path;
}
// If the subclass didn't specify this
if (args.Parent != null)
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{
item.Parent = args.Parent;
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}
item.Id = Kernel.GetMD5(item.Path);
}
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public BaseItem ResolvePath(ItemResolveEventArgs args)
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{
T item = Resolve(args);
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if (item != null)
{
// Set initial values on the newly resolved item
SetInitialItemValues(item, args);
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// Make sure the item has a name
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EnsureName(item);
// Make sure DateCreated and DateModified have values
EnsureDates(item, args);
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}
return item;
}
private void EnsureName(T item)
{
// If the subclass didn't supply a name, add it here
if (string.IsNullOrEmpty(item.Name))
{
item.Name = Path.GetFileNameWithoutExtension(item.Path);
}
}
/// <summary>
/// Ensures DateCreated and DateModified have values
/// </summary>
private void EnsureDates(T item, ItemResolveEventArgs args)
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{
if (!Path.IsPathRooted(item.Path))
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{
return;
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}
// See if a different path came out of the resolver than what went in
if (!args.Path.Equals(item.Path, StringComparison.OrdinalIgnoreCase))
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{
WIN32_FIND_DATA? childData = args.GetFileSystemEntry(item.Path);
if (childData != null)
{
item.DateCreated = childData.Value.CreationTime;
item.DateModified = childData.Value.LastWriteTime;
}
else
{
WIN32_FIND_DATA fileData = FileData.GetFileData(item.Path);
item.DateCreated = fileData.CreationTime;
item.DateModified = fileData.LastWriteTime;
}
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}
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else
{
item.DateCreated = args.FileInfo.CreationTime;
item.DateModified = args.FileInfo.LastWriteTime;
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}
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}
}
/// <summary>
/// Weed this to keep a list of resolvers, since Resolvers are built with generics
/// </summary>
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public interface IBaseItemResolver
{
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BaseItem ResolvePath(ItemResolveEventArgs args);
ResolverPriority Priority { get; }
}
public enum ResolverPriority
{
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First = 1,
Second = 2,
Third = 3,
Last = 4
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}
}