/// <summary>
/// Returns a task which retrieves latest tweets for a given user.
/// </summary>
/// <param name="username">User name.</param>
/// <param name="cacheFor">Cache duration.</param>
/// <returns>A task which retrieves latest tweets for a given user.</returns>
public static async Task <IEnumerable <string> > GetTweetsAsync(string username, TimeSpan?cacheFor = null)
{
string html = string.Empty;
IEnumerable <string> ret = null;
if (!WebSource.TryGetFromCache(username, cacheFor, out ret))
{
using (var client = new WebSource.SpecializedWebClient())
html = await client.DownloadStringTaskAsync(string.Format("https://mobile.twitter.com/{0}", username));
WebSource.AddToCache(username, cacheFor, ret = ParseTweets(html));
}
if (ret == null)
{
ret = Enumerable.Empty <string>();
}
return(ret);
}
/// <summary>
/// Returns a task which retrieves latest RSS items for a given URL.
/// </summary>
/// <param name="URL">RSS feed URL.</param>
/// <param name="cacheFor">Cache duration.</param>
/// <returns>A task which retrieves latest items for a given URL.</returns>
public static async Task <IEnumerable <RssFeedItem> > GetItemsAsync(string url, TimeSpan?cacheFor = null)
{
string xml = string.Empty;
IEnumerable <RssFeedItem> ret = null;
if (!WebSource.TryGetFromCache(url, cacheFor, out ret))
{
using (var client = new WebSource.SpecializedWebClient())
xml = await client.DownloadStringTaskAsync(url);
WebSource.AddToCache(url, cacheFor, ret = ParseItems(xml));
}
if (ret == null)
{
ret = Enumerable.Empty <RssFeedItem>();
}
return(ret);
}