/// <summary>
/// Remove feed url from list of Urls
/// </summary>
/// <param name="url"></param>
public void RemoveFeed(string url)
{
if (FeedUrls.Contains(url))
{
FeedUrls.Remove(url);
}
}
/// <summary>
/// Adding new feed if it exists.
/// </summary>
/// <param name="url">feed url</param>
/// <returns></returns>
public async Task SubscribeToFeedAsync(string url)
{
//getting feed links from HTML page
string[] links = await HttpHelper.ParseFeedUrlsAsStringAsync(url);
if (links.Length == 0)
{
try
{
await AddNewFeedAsync(url);
FeedUrls.Add(url);
}
catch
{
throw new Exception("Failed to find feed.\nTry checking the link.");
}
}
else
{
//adding all feeds from found links
foreach (string link in links)
{
if (!FeedUrls.Contains(link))
{
try
{
await AddNewFeedAsync(link);
}
catch
{
throw new Exception("Couldn't find resource.");
}
FeedUrls.Add(link);
}
}
}
}