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using MediaBrowser.Common.Extensions;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using System.IO;
using System.Text.RegularExpressions;
namespace MediaBrowser.Controller.Resolvers
{
/// <summary>
/// Class BaseItemResolver
/// </summary>
/// <typeparam name="T"></typeparam>
public abstract class BaseItemResolver<T> : IBaseItemResolver
where T : BaseItem, new()
{
/// <summary>
/// Resolves the specified args.
/// </summary>
/// <param name="args">The args.</param>
/// <returns>`0.</returns>
protected virtual T Resolve(ItemResolveArgs args)
{
return null;
}
/// <summary>
/// Gets the priority.
/// </summary>
/// <value>The priority.</value>
public virtual ResolverPriority Priority
{
get
{
return ResolverPriority.First;
}
}
/// <summary>
/// Sets initial values on the newly resolved item
/// </summary>
/// <param name="item">The item.</param>
/// <param name="args">The args.</param>
protected virtual void SetInitialItemValues(T item, ItemResolveArgs args)
{
// 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)
{
item.Parent = args.Parent;
}
item.Id = item.Path.GetMBId(item.GetType());
item.DisplayMediaType = item.GetType().Name;
}
/// <summary>
/// Resolves the path.
/// </summary>
/// <param name="args">The args.</param>
/// <returns>BaseItem.</returns>
public BaseItem ResolvePath(ItemResolveArgs args)
{
T item = Resolve(args);
if (item != null)
{
// Set the args on the item
item.ResolveArgs = args;
// Set initial values on the newly resolved item
SetInitialItemValues(item, args);
// Make sure the item has a name
EnsureName(item);
// Make sure DateCreated and DateModified have values
EntityResolutionHelper.EnsureDates(item, args);
}
return item;
}
/// <summary>
/// Ensures the name.
/// </summary>
/// <param name="item">The item.</param>
private void EnsureName(T item)
{
// If the subclass didn't supply a name, add it here
if (string.IsNullOrEmpty(item.Name) && !string.IsNullOrEmpty(item.Path))
{
//we use our resolve args name here to get the name of the containg folder, not actual video file
item.Name = GetMBName(item.ResolveArgs.FileInfo.cFileName, item.ResolveArgs.FileInfo.IsDirectory);
}
}
/// <summary>
/// The MB name regex
/// </summary>
private static readonly Regex MBNameRegex = new Regex("(\\[.*\\])", RegexOptions.Compiled);
/// <summary>
/// Strip out attribute items and return just the name we will use for items
/// </summary>
/// <param name="path">Assumed to be a file or directory path</param>
/// <param name="isDirectory">if set to <c>true</c> [is directory].</param>
/// <returns>The cleaned name</returns>
private static string GetMBName(string path, bool isDirectory)
{
//first just get the file or directory name
var fn = isDirectory ? Path.GetFileName(path) : Path.GetFileNameWithoutExtension(path);
//now - strip out anything inside brackets
fn = MBNameRegex.Replace(fn, string.Empty);
return fn;
}
}
/// <summary>
/// Weed this to keep a list of resolvers, since Resolvers are built with generics
/// </summary>
public interface IBaseItemResolver
{
/// <summary>
/// Resolves the path.
/// </summary>
/// <param name="args">The args.</param>
/// <returns>BaseItem.</returns>
BaseItem ResolvePath(ItemResolveArgs args);
/// <summary>
/// Gets the priority.
/// </summary>
/// <value>The priority.</value>
ResolverPriority Priority { get; }
}
/// <summary>
/// Enum ResolverPriority
/// </summary>
public enum ResolverPriority
{
/// <summary>
/// The first
/// </summary>
First = 1,
/// <summary>
/// The second
/// </summary>
Second = 2,
/// <summary>
/// The third
/// </summary>
Third = 3,
/// <summary>
/// The last
/// </summary>
Last = 4
}
}
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