private async Task<DataFeed> EnrichWithImagesAsync(DataFeed feed)
{
const string key = "ZvD71NLFp4EFiActP24HNCNHey1r4m64bwMQPTh8AZg";
if (!string.IsNullOrEmpty(feed.Image))
{
return feed;
}
if (feed.Concepts == null)
{
return null;
}
var bingContainer = new BingSearchContainer(new Uri("https://api.datamarket.azure.com/Bing/Search/v1/"))
{
Credentials = new NetworkCredential(key, key)
};
var imagesQuery = bingContainer.Image(string.Join(" ", feed.Concepts), null, null, "Moderate", null, null, "Size:Large");
IEnumerable<ImageResult> imagesResults = await
Task<IEnumerable<ImageResult>>.Factory.FromAsync(imagesQuery.BeginExecute, imagesQuery.EndExecute, null);
ImageResult image = imagesResults.FirstOrDefault();
if (image != null)
{
feed.Image = image.MediaUrl;
return feed;
}
return null;
}
private DataFeed EnrichWithConcepts(DataFeed feed)
{
try
{
var args = new SummarizerArguments
{
DictionaryLanguage = "en",
DisplayLines = 1,
InputString = feed.Title
};
var summary = Summarizer.Summarize(args);
feed.Concepts = summary.Concepts.ToArray();
}
catch (Exception)
{
}
return feed;
}
private DataFeed NormalizeFeed(DataFeed feed)
{
feed.Title = HttpUtility.HtmlDecode(feed.Title);
feed.Text = HttpUtility.HtmlDecode(feed.Text);
return feed;
}