113 lines
No EOL
3.7 KiB
C#
113 lines
No EOL
3.7 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Net;
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using System.Net.Http;
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using System.Threading.Tasks;
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using System.Xml;
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using System.Xml.Linq;
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namespace LightTube
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{
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public static class YoutubeRSS
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{
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private static HttpClient _httpClient = new();
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public static async Task<ChannelFeed> GetChannelFeed(string channelId)
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{
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HttpResponseMessage response =
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await _httpClient.GetAsync("https://www.youtube.com/feeds/videos.xml?channel_id=" + channelId);
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if (!response.IsSuccessStatusCode)
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throw response.StatusCode switch
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{
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HttpStatusCode.NotFound => new KeyNotFoundException($"Channel '{channelId}' does not exist"),
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var _ => new Exception("Failed to fetch RSS feed for channel " + channelId)
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};
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ChannelFeed feed = new();
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string xml = await response.Content.ReadAsStringAsync();
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XDocument doc = XDocument.Parse(xml);
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feed.Name = doc.Descendants().First(p => p.Name.LocalName == "title").Value;
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feed.Id = doc.Descendants().First(p => p.Name.LocalName == "channelId").Value;
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feed.Videos = doc.Descendants().Where(p => p.Name.LocalName == "entry").Select(x => new FeedVideo
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{
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Id = x.Descendants().First(p => p.Name.LocalName == "videoId").Value,
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Title = x.Descendants().First(p => p.Name.LocalName == "title").Value,
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Description = x.Descendants().First(p => p.Name.LocalName == "description").Value,
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ViewCount = long.Parse(x.Descendants().First(p => p.Name.LocalName == "statistics").Attribute("views")?.Value ?? "-1"),
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Thumbnail = x.Descendants().First(p => p.Name.LocalName == "thumbnail").Attribute("url")?.Value,
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ChannelName = x.Descendants().First(p => p.Name.LocalName == "name").Value,
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ChannelId = x.Descendants().First(p => p.Name.LocalName == "channelId").Value,
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PublishedDate = DateTimeOffset.Parse(x.Descendants().First(p => p.Name.LocalName == "published").Value)
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}).ToArray();
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return feed;
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}
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public static async Task<FeedVideo[]> GetMultipleFeeds(IEnumerable<string> channelIds)
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{
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Task<ChannelFeed>[] feeds = channelIds.Select(YoutubeRSS.GetChannelFeed).ToArray();
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await Task.WhenAll(feeds);
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List<FeedVideo> videos = new();
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foreach (ChannelFeed feed in feeds.Select(x => x.Result)) videos.AddRange(feed.Videos);
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videos.Sort((a, b) => DateTimeOffset.Compare(b.PublishedDate, a.PublishedDate));
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return videos.ToArray();
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}
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}
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public class ChannelFeed
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{
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public string Name;
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public string Id;
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public FeedVideo[] Videos;
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}
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public class FeedVideo
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{
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public string Id;
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public string Title;
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public string Description;
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public long ViewCount;
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public string Thumbnail;
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public string ChannelName;
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public string ChannelId;
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public DateTimeOffset PublishedDate;
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public XmlElement GetXmlElement(XmlDocument doc)
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{
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XmlElement item = doc.CreateElement("Video");
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item.SetAttribute("id", Id);
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item.SetAttribute("views", ViewCount.ToString());
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item.SetAttribute("uploadedAt", PublishedDate.ToUnixTimeSeconds().ToString());
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XmlElement title = doc.CreateElement("Title");
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title.InnerText = Title;
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item.AppendChild(title);
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XmlElement channel = doc.CreateElement("Channel");
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channel.SetAttribute("id", ChannelId);
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XmlElement channelTitle = doc.CreateElement("Name");
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channelTitle.InnerText = ChannelName;
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channel.AppendChild(channelTitle);
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item.AppendChild(channel);
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XmlElement thumbnail = doc.CreateElement("Thumbnail");
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thumbnail.InnerText = Thumbnail;
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item.AppendChild(thumbnail);
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if (!string.IsNullOrWhiteSpace(Description))
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{
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XmlElement description = doc.CreateElement("Description");
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description.InnerText = Description;
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item.AppendChild(description);
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}
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return item;
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}
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}
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} |