/// <summary>
/// Constructor
/// </summary>
/// <param name="article">Full feed article instance.</param>
public FeedDetailsViewModel(FeedArticle article)
{
Article = new HtmlWebViewSource
{
Html = article.Article
};
}
public static string AuthorAndSiteName(this FeedArticle data)
{
var sb = new StringBuilder();
sb.Append(data.Author);
if (!string.IsNullOrEmpty(data.Author) && !string.IsNullOrEmpty(data.SiteName))
{
sb.Append(" - ");
}
sb.Append(data.SiteName?.Replace("www.", "", StringComparison.OrdinalIgnoreCase));
return(sb.ToString());
}
public static string YouTubeEmbeddedUrl(this FeedArticle data)
{
string param1 = "";
if (data.ArticleUrl.Contains("https://youtu.be/", StringComparison.OrdinalIgnoreCase))
{
param1 = data.ArticleUrl.Replace("https://youtu.be/", "", StringComparison.OrdinalIgnoreCase);
}
else
{
Uri myUri = new Uri(data.ArticleUrl);
param1 = HttpUtility.ParseQueryString(myUri.Query).Get("v");
}
return($"https://www.youtube.com/embed/" + param1);
}
/// <summary>
/// Provides full feed article from network
/// </summary>
/// <param name="link">Article link</param>
/// <param name="token">Cancelation token</param>
/// <returns>Full feed article or null in case of fail or cancelation.</returns>
public async Task <FeedArticle> GetFullFeedOnlineAsync(Uri link, CancellationToken token)
{
FeedArticle result = null;
try
{
// Article missing in storage and should be downloaded
var rowArticle = await _client.GetStringAsync(link);
var resultArticle = new HtmlArticleParser().GetArticleFromPage(rowArticle);
result = new FeedArticle(link.ToString(), resultArticle);
await _storage.SaveFeedArticleAsync(result, token);
}
catch
{
// nothing to do here.
}
return(result);
}
/// <summary>
/// Opens details page for given article.
/// </summary>
/// <param name="article">Full feed article</param>
private void OpenDetailPage(FeedArticle article)
{
var model = new FeedDetailsViewModel(article);
MainPage.Navigation.PushAsync(new FeedDetailsPage(model));
}
public static string ButtonLabel(this FeedArticle data)
{
return(data.IsYouTube() ? "View" : "Read More");
}
public static bool IsYouTube(this FeedArticle data)
{
return(data.ArticleUrl.Contains("youtu", StringComparison.OrdinalIgnoreCase));
}
/// <summary>
/// Save given list of feeds to storage.
/// </summary>
/// <param name="feeds">Feeds for saving</param>
/// <param name="ctx">Saving operation cancelation token</param>
/// <returns>Saved keys</returns>
public Task SaveFeedArticleAsync(FeedArticle article, CancellationToken ctx)
{
return(SaveObjectAsync(article, ArticleId2Key, ctx));
}