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YouTuber

This project was built mainly for practicing purposes. We focused on loose coupling and high cohesion by using test driven development(TDD).

Using the library should be pretty much straight forward:

Uri link = new Uri("https://www.youtube.com/watch?v=TWcyIpul8OE");

// Classify link
URLResult result = URLUtility.AnalyzeURI(link);

if (!result.HasFlag(URLResult.isValid)) return;
if (result.HasFlag(URLResult.isVideo)) { // You're a video, Harry!
    string VideoID = URLUtility.ExtractVideoID(link);
    Video video = await Video.fromID(VideoID);

    // Get video data
    string title = video.Title;
    string htmlDescription = video.Description;
    string username = video.Username;
    DateTime uploaded = video.UploadedDateTime;
    long views = video.Views;
    long likes = video.Likes;
    long dislikes = video.Dislikes;
    long subscribers = video.Subscribers;

    // Get data on recommendations
    List<Recommendation> recommendations = video.RelatedVideos;
    Recommendation.Video firstRecommendedVideo =
        recommendations.OfType<Recommendation.Video>().ToList().First();
    string recommendationTitle = firstRecommendedVideo.Title;
    TimeSpan recommendationDuration = firstRecommendedVideo.Duration;
    long recommendationViews = firstRecommendedVideo.Views;
    string recommendationID = firstRecommendedVideo.VideoID;
    Video recommendatedVideo = await Video.fromID(recommendationID);

    // Select your desired download
    List<VideoFile> downloadables = video.ExtractFiles();
    List<VideoFile.DashAudio> audioDownloads = downloadables.OfType<VideoFile.DashAudio>().ToList();
    int highestBitrate = audioDownloads.Max(audio => audio.AudioBitrate);
    VideoFile.DashAudio bestAudio = audioDownloads.First(audio => audio.AudioBitrate == highestBitrate);

    // Get your download link
    Uri downloadUri = await bestAudio.GetDownloadUri();
    string extension = bestAudio.Extension;
    string basePath = Directory.GetParent(Directory.GetCurrentDirectory()).Parent.FullName;

    // Download (Don't do it like this. Do it properly, please)
    byte[] data = await new WebClient().DownloadDataTaskAsync(downloadUri);
    File.WriteAllBytes(Path.Combine(basePath, $"{title}{extension}"), data);
} else if (result.HasFlag(URLResult.isPlaylist)) { // You're a playlist, Harry!
    // Not yet implemented
} else if (result.HasFlag(URLResult.isImage)) { // You're an image, Harry!
    // Not yet implemented
}