mirror of
https://github.com/jellyfin/jellyfin.git
synced 2024-09-08 20:38:24 +02:00
277 lines
9.2 KiB
C#
277 lines
9.2 KiB
C#
using MediaBrowser.Common.Configuration;
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using MediaBrowser.Common.Extensions;
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using MediaBrowser.Common.Net;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.Notifications;
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using MediaBrowser.Controller.Plugins;
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using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.News;
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using MediaBrowser.Model.Notifications;
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using MediaBrowser.Model.Serialization;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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using System.Xml;
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using MediaBrowser.Common.Progress;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.Threading;
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namespace Emby.Server.Implementations.News
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{
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public class NewsEntryPoint : IServerEntryPoint
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{
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private ITimer _timer;
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private readonly IHttpClient _httpClient;
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private readonly IApplicationPaths _appPaths;
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private readonly IFileSystem _fileSystem;
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private readonly ILogger _logger;
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private readonly IJsonSerializer _json;
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private readonly INotificationManager _notifications;
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private readonly IUserManager _userManager;
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private readonly TimeSpan _frequency = TimeSpan.FromHours(24);
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private readonly ITimerFactory _timerFactory;
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public NewsEntryPoint(IHttpClient httpClient, IApplicationPaths appPaths, IFileSystem fileSystem, ILogger logger, IJsonSerializer json, INotificationManager notifications, IUserManager userManager, ITimerFactory timerFactory)
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{
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_httpClient = httpClient;
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_appPaths = appPaths;
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_fileSystem = fileSystem;
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_logger = logger;
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_json = json;
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_notifications = notifications;
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_userManager = userManager;
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_timerFactory = timerFactory;
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}
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public void Run()
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{
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_timer = _timerFactory.Create(OnTimerFired, null, TimeSpan.FromMilliseconds(500), _frequency);
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}
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/// <summary>
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/// Called when [timer fired].
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/// </summary>
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/// <param name="state">The state.</param>
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private async void OnTimerFired(object state)
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{
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var path = Path.Combine(_appPaths.CachePath, "news.json");
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try
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{
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await DownloadNews(path).ConfigureAwait(false);
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}
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catch (Exception ex)
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{
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_logger.ErrorException("Error downloading news", ex);
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}
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}
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private async Task DownloadNews(string path)
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{
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DateTime? lastUpdate = null;
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if (_fileSystem.FileExists(path))
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{
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lastUpdate = _fileSystem.GetLastWriteTimeUtc(path);
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}
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var requestOptions = new HttpRequestOptions
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{
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Url = "http://emby.media/community/index.php?/blog/rss/1-media-browser-developers-blog",
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Progress = new SimpleProgress<double>(),
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UserAgent = "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.42 Safari/537.36",
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BufferContent = false
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};
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using (var stream = await _httpClient.Get(requestOptions).ConfigureAwait(false))
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{
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using (var reader = XmlReader.Create(stream))
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{
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var news = ParseRssItems(reader).ToList();
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_json.SerializeToFile(news, path);
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await CreateNotifications(news, lastUpdate, CancellationToken.None).ConfigureAwait(false);
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}
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}
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}
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private Task CreateNotifications(List<NewsItem> items, DateTime? lastUpdate, CancellationToken cancellationToken)
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{
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if (lastUpdate.HasValue)
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{
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items = items.Where(i => i.Date.ToUniversalTime() >= lastUpdate.Value)
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.ToList();
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}
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var tasks = items.Select(i => _notifications.SendNotification(new NotificationRequest
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{
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Date = i.Date,
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Name = i.Title,
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Description = i.Description,
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Url = i.Link,
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UserIds = _userManager.Users.Select(u => u.Id.ToString("N")).ToList()
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}, cancellationToken));
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return Task.WhenAll(tasks);
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}
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private IEnumerable<NewsItem> ParseRssItems(XmlReader reader)
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{
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reader.MoveToContent();
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reader.Read();
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while (!reader.EOF && reader.ReadState == ReadState.Interactive)
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{
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if (reader.NodeType == XmlNodeType.Element)
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{
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switch (reader.Name)
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{
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case "channel":
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{
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if (!reader.IsEmptyElement)
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{
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using (var subReader = reader.ReadSubtree())
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{
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return ParseFromChannelNode(subReader);
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}
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}
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else
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{
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reader.Read();
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}
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break;
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}
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default:
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{
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reader.Skip();
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break;
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}
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}
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}
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else
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{
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reader.Read();
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}
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}
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return new List<NewsItem>();
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}
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private IEnumerable<NewsItem> ParseFromChannelNode(XmlReader reader)
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{
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var list = new List<NewsItem>();
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reader.MoveToContent();
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reader.Read();
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while (!reader.EOF && reader.ReadState == ReadState.Interactive)
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{
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if (reader.NodeType == XmlNodeType.Element)
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{
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switch (reader.Name)
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{
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case "item":
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{
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if (!reader.IsEmptyElement)
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{
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using (var subReader = reader.ReadSubtree())
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{
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list.Add(ParseItem(subReader));
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}
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}
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else
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{
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reader.Read();
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}
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break;
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}
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default:
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{
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reader.Skip();
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break;
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}
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}
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}
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else
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{
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reader.Read();
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}
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}
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return list;
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}
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private NewsItem ParseItem(XmlReader reader)
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{
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var item = new NewsItem();
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reader.MoveToContent();
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reader.Read();
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while (!reader.EOF && reader.ReadState == ReadState.Interactive)
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{
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if (reader.NodeType == XmlNodeType.Element)
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{
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switch (reader.Name)
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{
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case "title":
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{
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item.Title = reader.ReadElementContentAsString();
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break;
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}
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case "link":
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{
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item.Link = reader.ReadElementContentAsString();
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break;
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}
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case "description":
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{
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item.DescriptionHtml = reader.ReadElementContentAsString();
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item.Description = item.DescriptionHtml.StripHtml();
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break;
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}
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case "pubDate":
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{
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var date = reader.ReadElementContentAsString();
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DateTime parsedDate;
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if (DateTime.TryParse(date, out parsedDate))
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{
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item.Date = parsedDate;
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}
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break;
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}
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default:
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{
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reader.Skip();
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break;
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}
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}
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}
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else
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{
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reader.Read();
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}
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}
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return item;
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}
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public void Dispose()
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{
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if (_timer != null)
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{
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_timer.Dispose();
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_timer = null;
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}
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GC.SuppressFinalize(this);
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}
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}
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}
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