private Channel Extract(ChannelPageExtractor channelPage)
{
var channelId =
channelPage.TryGetChannelId() ??
throw new YoutubeExplodeException("Could not extract channel ID.");
var title =
channelPage.TryGetChannelTitle() ??
throw new YoutubeExplodeException("Could not extract channel title.");
var logoUrl =
channelPage.TryGetChannelLogoUrl() ??
throw new YoutubeExplodeException("Could not extract channel logo URL.");
var logoSize = Regex
.Matches(logoUrl, @"\bs(\d+)\b")
.Cast <Match>()
.LastOrDefault()?
.Groups[1]
.Value
.NullIfWhiteSpace()?
.ParseIntOrNull() ?? 100;
var thumbnails = new[] { new Thumbnail(logoUrl, new Resolution(logoSize, logoSize)) };
return(new Channel(channelId, title, thumbnails));
}
