/// <summary>
/// Takes a fee url, verifies it, and adds it to the database
/// </summary>
/// <param name="url">An RSS feed</param>
/// <returns>True if the feed was successfully added, false otherwise</returns>
public Boolean AddFeed(String url)
{
Boolean returnValue = false;
//verify the url isn't already in our list
if (feedList.Where(f => f.Url.ToLower().Contains(url.ToLower())).Any())
return true;
//get the feed info
Feed internalFeed;
SyndicationFeed feed;
try
{
feed = SyndicationFeed.Load(XmlReader.Create(url));
internalFeed = new Feed();
internalFeed.Title = feed.Title.Text;
internalFeed.Url = url;
//add the Feed to the db
if (internalFeed != null)
{
using (var ctx = new RssReaderDbContext())
{
ctx.Feeds.Add(internalFeed);
ctx.SaveChanges();
returnValue = true;
}
}
}
catch (Exception)
{
returnValue = false;
}
PopulateFeedList();
return returnValue;
}
/// <summary>
/// Deletes the specified feed from the database and re-populates the local feedlist
/// </summary>
/// <param name="feedToRemove">A Feed object</param>
/// <returns>True if the feed was removed.</returns>
public Boolean RemoveFeed(Feed feedToRemove)
{
Boolean returnValue = false;
using (var ctx = new RssReaderDbContext())
{
ctx.Feeds.Remove(feedToRemove);
returnValue = true;
}
PopulateFeedList();
return returnValue;
}
/// <summary>
/// Clears the feedList and re-populates from the database
/// </summary>
private void PopulateFeedList()
{
feedList.Clear();
using(var ctx = new RssReaderDbContext())
{
feedList = ctx.Feeds.Include("FeedItems").ToList();
}
}