/// <summary>
/// Creates an InfoSelector and returns the users download preferences
/// </summary>
/// <param name="videoList">The list of videos available</param>
/// <returns>The user's preferences</returns>
private WndwInfoSelector GetUserDownloadPreferences(IEnumerable <VideoInfo> videoList)
{
//Create a new info selection window
WndwInfoSelector infoSelector = new WndwInfoSelector
{
VideoInfo = videoList
};
//Show the info selection dialog
infoSelector.ShowDialog();
//Return if the selection made was cancelled
if (infoSelector.SelectionCancelled)
{
return(null);
}
else
{
return(infoSelector);
}
}
/// <summary>
/// Invoked when BtnExtract is clicked
/// Starts the extraction process of a video or playlist
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private async void BtnExtract_Click(object sender, RoutedEventArgs e)
{
//The list of videos available for download
IEnumerable <VideoInfo> videoList = null;
//Prevent another video being downloaded
DisableExtractionButton(WAIT_TEXT);
//Get the video info
videoList = await Task.Run(() => ResolveURL(ExtractionUrl));
//Check that the return was not null
if (videoList == null)
{
MessageBox.Show("The URL entered is not a valid YouTube video URL!");
EnableExtractionButton(DOWNLOAD_TEXT_QUERY);
return;
}
//The user download preferences selector
WndwInfoSelector infoSelector = null;
//The video to download
VideoInfo video = null;
while (true)
{
//Get the user preferences
infoSelector = GetUserDownloadPreferences(videoList);
//If we are to download video, else download audio
if (infoSelector.SelectedDownloadType == DownloadType.Video)
{
//Try to find the first element
try
{
//Get the first video with the selected resolution and format and highest bitrate
video = videoList.Where(info => info.Resolution == infoSelector.SelectedVideoResolution &&
info.VideoExtension == infoSelector.SelectedVideoExtension && info.AudioBitrate == infoSelector.SelectedAudioBitrate)
.First();
break;
}
catch
{
MessageBox.Show("We couldn't find a video with the stats that you selected!");
continue;
}
}
else
{
try
{
//Get the first video with the selected resolution and format and highest bitrate
video = videoList.Where(info => info.AudioBitrate == infoSelector.SelectedAudioBitrate &&
info.AudioExtension == infoSelector.SelectedAudioExtension && info.CanExtractAudio)
.First();
break;
} catch
{
MessageBox.Show("We couldn't find an audio track with the stats that you selected!");
continue;
}
}
}
//If the video has an encrypted signature, decode it
if (video.RequiresDecryption)
{
DownloadUrlResolver.DecryptDownloadUrl(video);
}
//Get the download folder location
string downloadLocation = ShowFolderSelectionDialog();
if (infoSelector.SelectedDownloadType == DownloadType.Video)
{
//Create the downloader
VideoDownloader downloader = new VideoDownloader(video, Path.Combine(downloadLocation, DownloadItem.PathCleaner(video.Title) + video.VideoExtension));
//Create a new DownloadVideo item
DownloadVideoItem item = new DownloadVideoItem(DownloadType.Video, video.Title, downloader);
//Add a new DownloadVideoItem
DownloadingItems.Add(item);
EnableExtractionButton(DOWNLOAD_TEXT_QUERY);
}
else
{
//Create the audio downloader
AudioDownloader downloader = new AudioDownloader(video, Path.Combine(downloadLocation, DownloadItem.PathCleaner(video.Title) + video.AudioExtension));
//Create a new DownloadAudio item
DownloadAudioItem item = new DownloadAudioItem(DownloadType.Audio, video.Title, downloader);
//Add the new DownloadAudioItem
DownloadingItems.Add(item);
EnableExtractionButton(DOWNLOAD_TEXT_QUERY);
}
}
