private async Task <IEnumerable <VideoFeedItem> > ParseFeed(string rss)
{
return(await Task.Run(() =>
{
var xdoc = XDocument.Parse(rss);
var list = new List <VideoFeedItem>();
XNamespace media = "http://search.yahoo.com/mrss/";
XNamespace itunes = "http://www.itunes.com/dtds/podcast-1.0.dtd";
foreach (var item in xdoc.Descendants("item"))
{
try
{
bool foundTheMagicKeyword = false;
foreach (var element in item.Elements())
{
var keyword = "hanselman".ToLowerInvariant();
if (element.Value.ToLowerInvariant().Contains(keyword))
{
foundTheMagicKeyword = true;
break;
}
}
if (!foundTheMagicKeyword)
{
continue;
}
var mediaGroup = item.Element(media + "group");
if (mediaGroup == null)
{
continue;
}
List <VideoContentItem> videoUrls = new List <VideoContentItem>();
foreach (var mediaUrl in mediaGroup.Elements())
{
var duration = mediaUrl.Attribute("duration").Value;
var fileSize = mediaUrl.Attribute("fileSize").Value;
var url = mediaUrl.Attribute("url").Value;
videoUrls.Add(new VideoContentItem()
{
Duration = TimeSpan.FromSeconds(Convert.ToInt32(duration)),
FileSize = long.Parse(fileSize),
Url = url,
}
);
}
var videoFeedItem = new VideoFeedItem
{
VideoUrls = videoUrls.OrderByDescending(url => url.FileSize).ToList(),
Title = (string)item.Element("title"),
Description = (string)item.Element(itunes + "summary")?.Value,
Link = (string)item.Element("link"),
PublishDate = (string)item.Element("pubDate"),
Category = (string)item.Element("category"),
ThumbnailUrl = (string)item.Element(media + "thumbnail")?.Attribute("url")?.Value
};
list.Add(videoFeedItem);
}
catch (Exception)
{
Debug.WriteLine("Unable to parse rss for item");
}
}
return list;
}));
}
public Channel9VideoPlaybackPage(VideoFeedItem item)
{
InitializeComponent();
BindingContext = item;
}
