private string GetiTunesSourceUrl(PodcastGenre genre, uint limit)
{
var url = string.Empty;
if (genre != 0)
{
url = string.Format(iTunesPodcastFormatGenre, limit, (int)genre);
}
else
{
url = string.Format(iTunesPodcastFormatAll, limit);
}
return(url);
}
private string GetiTunesSourceRss(PodcastGenre genre, uint limit)
{
var rss = string.Empty;
var url = GetiTunesSourceUrl(genre, limit);
var webClient = new WebClient();
Stream st = webClient.OpenRead(url);
using (var sr = new StreamReader(st))
{
rss = sr.ReadToEnd();
}
return(rss);
}
/// <summary>
/// Gets a collection <see cref="PodcastFeed"/>, listed at the top charts for the given genre.
/// </summary>
/// <param name="genre">Genre for which to read the top charts.</param>
/// <param name="podcastFeeds">Collection of podcasts read from the top charts.</param>
/// <param name="errorMessage">A description of any error that occurred, null if successful.</param>
/// <param name="maxPodcastLimit">Max numbe of podcasts to read from the top charts (Defaults to 10).</param>
/// <returns>True when successful, false otherwise.</returns>
public bool TryGetTopCharts(PodcastGenre genre, out IEnumerable <PodcastFeed> podcastFeeds, out string errorMessage, uint maxPodcastLimit = 10)
{
errorMessage = null;
podcastFeeds = null;
try
{
podcastFeeds = GetTopCharts(genre, maxPodcastLimit);
return(true);
}
catch (Exception ex)
{
errorMessage = ex.Message;
return(false);
}
}
/// <summary>
/// Get a list of top podcasts
/// </summary>
/// <param name="genre">Podcast genre</param>
/// <param name="maxItems">Maximum number of items you want to retrieve</param>
/// <param name="country">Two-letter country code (ISO 3166-1 alpha-2)</param>
/// <returns>list of top podcasts</returns>
public async Task <IEnumerable <Podcast> > GetTopPodcastsAsync(PodcastGenre genre = PodcastGenre.All, int maxItems = 100, string country = "us")
{
if (country == null)
{
throw new ArgumentNullException(nameof(country));
}
if (maxItems < 1)
{
throw new ArgumentException("The maximum number of items must be greater than zero", nameof(maxItems));
}
Uri url = new Uri(string.Format(base_top_url, country, maxItems, (int)genre));
string json = await WebRequestAsync(url).ConfigureAwait(false);
return(JsonHelper.DeserializePodcast(json));
}
private PodcastFeed GetiTunesPodcasts(PodcastGenre genre, uint limit)
{
var url = GetiTunesSourceUrl(genre, limit);
var sourceSub = new PodcastFeed()
{
RssLink = url,
Title = genre.ToString(),
Category = "iTunes",
MaxItems = limit,
};
_parser.LoadPodcastFeed(sourceSub, limit);
return(sourceSub);
}
public IEnumerable <PodcastFeed> GetPodcasts(PodcastGenre genre, uint limit)
{
var podcastsChart = GetiTunesPodcasts(genre, limit);
List <PodcastFeed> feeds = new List <PodcastFeed>();
int count = 0;
foreach (var podcast in podcastsChart.PodcastEpisodes)
{
var podcastId = GetPodcastId(podcast.Link);
var podcastInfoJson = GetPodcastInfoJson(podcastId);
var subscriptions = DeserializeFeeds(podcastInfoJson, _parser);
var sub = subscriptions.FirstOrDefault();
if (sub != null && feeds.FirstOrDefault(p => p.Title == sub.Title) == null)
{
feeds.Add(sub);
}
double percent = (double)(++count) / (double)podcastsChart.PodcastEpisodes.Count;
OnPodcastSourceUpdated(percent);
}
return(feeds);
}
public void GetPodcastsAsync(PodcastGenre genre, uint limit)
{
var thread = new Thread(() => GetPodcasts(genre, limit));
thread.Start();
}
public void TryGetTopCharts_ShouldInvokePodcastChartsUnitTest(PodHead sut, IPodcastCharts podcastCharts, PodcastGenre podcastGenre, uint limit)
{
sut.SetField(typeof(IPodcastCharts), podcastCharts);
bool success = sut.TryGetTopCharts(podcastGenre, out IEnumerable <PodcastFeed> podcasts, out string errors, limit);
Assert.IsTrue(success);
Assert.IsNull(errors);
podcastCharts.Received(1).GetPodcasts(podcastGenre, limit);
}
public void GetTopCharts_ShouldInvokePodcastChartsUnitTest(PodHead sut, IPodcastCharts podcastCharts, PodcastGenre podcastGenre, uint limit)
{
sut.SetField(typeof(IPodcastCharts), podcastCharts);
sut.GetTopCharts(podcastGenre, limit);
podcastCharts.Received(1).GetPodcasts(podcastGenre, limit);
}
/// <summary>
/// Gets a collection <see cref="PodcastFeed"/>, listed at the top charts for the given genre.
/// </summary>
/// <param name="genre">Genre for which to read the top charts.</param>
/// <param name="maxPodcastLimit">Max number of podcasts to read from the top charts (Defaults to 10).</param>
/// <returns>Collection of podcast top charts results.</returns>
public IEnumerable <PodcastFeed> GetTopCharts(PodcastGenre genre, uint maxPodcastLimit = 10)
{
return(_podcastCharts.GetPodcasts(genre, maxPodcastLimit));
}
