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jellyfin/MediaBrowser.Server.Impleme.../Channels/ChannelManager.cs

258 lines
8.5 KiB

using MediaBrowser.Common.Extensions;
using MediaBrowser.Common.IO;
using MediaBrowser.Controller.Channels;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Dto;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.Channels;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Querying;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Server.Implementations.Channels
{
public class ChannelManager : IChannelManager
{
private IChannel[] _channels;
private List<Channel> _channelEntities = new List<Channel>();
private readonly IUserManager _userManager;
private readonly IDtoService _dtoService;
private readonly ILibraryManager _libraryManager;
private readonly ILogger _logger;
private readonly IServerConfigurationManager _config;
private readonly IFileSystem _fileSystem;
public ChannelManager(IUserManager userManager, IDtoService dtoService, ILibraryManager libraryManager, ILogger logger, IServerConfigurationManager config, IFileSystem fileSystem)
{
_userManager = userManager;
_dtoService = dtoService;
_libraryManager = libraryManager;
_logger = logger;
_config = config;
_fileSystem = fileSystem;
}
public void AddParts(IEnumerable<IChannel> channels)
{
_channels = channels.ToArray();
}
public Task<QueryResult<BaseItemDto>> GetChannels(ChannelQuery query, CancellationToken cancellationToken)
{
var user = string.IsNullOrWhiteSpace(query.UserId)
? null
: _userManager.GetUserById(new Guid(query.UserId));
var channels = _channelEntities.OrderBy(i => i.SortName).ToList();
if (user != null)
{
channels = channels.Where(i => GetChannelProvider(i).IsEnabledFor(user) && i.IsVisible(user))
.ToList();
}
// Get everything
var fields = Enum.GetNames(typeof(ItemFields))
.Select(i => (ItemFields)Enum.Parse(typeof(ItemFields), i, true))
.ToList();
var returnItems = channels.Select(i => _dtoService.GetBaseItemDto(i, fields, user))
.ToArray();
var result = new QueryResult<BaseItemDto>
{
Items = returnItems,
TotalRecordCount = returnItems.Length
};
return Task.FromResult(result);
}
public async Task RefreshChannels(IProgress<double> progress, CancellationToken cancellationToken)
{
var allChannelsList = _channels.ToList();
var list = new List<Channel>();
var numComplete = 0;
foreach (var channelInfo in allChannelsList)
{
cancellationToken.ThrowIfCancellationRequested();
try
{
var item = await GetChannel(channelInfo, cancellationToken).ConfigureAwait(false);
list.Add(item);
_libraryManager.RegisterItem(item);
}
catch (OperationCanceledException)
{
throw;
}
catch (Exception ex)
{
_logger.ErrorException("Error getting channel information for {0}", ex, channelInfo.Name);
}
numComplete++;
double percent = numComplete;
percent /= allChannelsList.Count;
progress.Report(100 * percent);
}
_channelEntities = list.ToList();
progress.Report(100);
}
private async Task<Channel> GetChannel(IChannel channelInfo, CancellationToken cancellationToken)
{
var path = Path.Combine(_config.ApplicationPaths.ItemsByNamePath, "channels", _fileSystem.GetValidFilename(channelInfo.Name));
var fileInfo = new DirectoryInfo(path);
var isNew = false;
if (!fileInfo.Exists)
{
_logger.Debug("Creating directory {0}", path);
Directory.CreateDirectory(path);
fileInfo = new DirectoryInfo(path);
if (!fileInfo.Exists)
{
throw new IOException("Path not created: " + path);
}
isNew = true;
}
var id = GetInternalChannelId(channelInfo.Name);
var item = _libraryManager.GetItemById(id) as Channel;
if (item == null)
{
item = new Channel
{
Name = channelInfo.Name,
Id = id,
DateCreated = _fileSystem.GetCreationTimeUtc(fileInfo),
DateModified = _fileSystem.GetLastWriteTimeUtc(fileInfo),
Path = path
};
isNew = true;
}
item.HomePageUrl = channelInfo.HomePageUrl;
item.OriginalChannelName = channelInfo.Name;
if (string.IsNullOrEmpty(item.Name))
{
item.Name = channelInfo.Name;
}
await item.RefreshMetadata(new MetadataRefreshOptions
{
ForceSave = isNew
}, cancellationToken);
return item;
}
private Guid GetInternalChannelId(string name)
{
if (string.IsNullOrWhiteSpace(name))
{
throw new ArgumentNullException("name");
}
return ("Channel " + name).GetMBId(typeof(Channel));
}
public async Task<QueryResult<BaseItemDto>> GetChannelItems(ChannelItemQuery query, CancellationToken cancellationToken)
{
var user = string.IsNullOrWhiteSpace(query.UserId)
? null
: _userManager.GetUserById(new Guid(query.UserId));
var id = new Guid(query.ChannelId);
var channel = _channelEntities.First(i => i.Id == id);
var channelProvider = GetChannelProvider(channel);
var items = await GetChannelItems(channelProvider, user, query.CategoryId, cancellationToken)
.ConfigureAwait(false);
return await GetReturnItems(items, user, query.StartIndex, query.Limit, cancellationToken).ConfigureAwait(false);
}
private Task<IEnumerable<ChannelItemInfo>> GetChannelItems(IChannel channel, User user, string categoryId, CancellationToken cancellationToken)
{
// TODO: Put some caching in here
if (string.IsNullOrWhiteSpace(categoryId))
{
return channel.GetChannelItems(user, cancellationToken);
}
return channel.GetChannelItems(categoryId, user, cancellationToken);
}
private async Task<QueryResult<BaseItemDto>> GetReturnItems(IEnumerable<ChannelItemInfo> items, User user, int? startIndex, int? limit, CancellationToken cancellationToken)
{
if (startIndex.HasValue)
{
items = items.Skip(startIndex.Value);
}
if (limit.HasValue)
{
items = items.Take(limit.Value);
}
// Get everything
var fields = Enum.GetNames(typeof(ItemFields))
.Select(i => (ItemFields)Enum.Parse(typeof(ItemFields), i, true))
.ToList();
var tasks = items.Select(GetChannelItemEntity);
var returnItems = await Task.WhenAll(tasks).ConfigureAwait(false);
var returnItemArray = returnItems.Select(i => _dtoService.GetBaseItemDto(i, fields, user))
.ToArray();
return new QueryResult<BaseItemDto>
{
Items = returnItemArray,
TotalRecordCount = returnItems.Length
};
}
private async Task<BaseItem> GetChannelItemEntity(ChannelItemInfo info)
{
return null;
}
private IChannel GetChannelProvider(Channel channel)
{
return _channels.First(i => string.Equals(i.Name, channel.OriginalChannelName, StringComparison.OrdinalIgnoreCase));
}
}
}