public void SaveFeed(Feed feed)
{
if (feed.FeedID == 0)
{
_feedTable.InsertOnSubmit(feed);
}
_context.SubmitChanges();
}
public List<FeedViewModel> BuildFeedsViewModelList(List<Feed> feeds, Feed selectedFeed)
{
List<FeedViewModel> models = new List<FeedViewModel>();
foreach (var f in feeds)
{
var feedViewModel = new FeedViewModel { Feed = f };
feedViewModel.UnreadCount = _repository.Items.Count(x => x.FeedID == f.FeedID && x.IsRead == false);
if (selectedFeed != null && f.FeedID == selectedFeed.FeedID)
{
feedViewModel.Selected = true;
}
models.Add(feedViewModel);
}
return models;
}
public void DeleteFeed(Feed feed)
{
_feedTable.DeleteOnSubmit(feed);
_context.SubmitChanges();
}
public ActionResult Subscribe(string url)
{
if (url.Trim() == string.Empty)
{
TempData["Error"] = "URL is required to add a feed";
}
else
{
try
{
// Check for duplicates
var feed = _repository.Feeds.FirstOrDefault(x => x.URL == url);
if (feed == null)
{
feed = new Feed { FeedID = 0, URL = url };
}
_services.FillFeed(feed);
_repository.SaveFeed(feed);
TempData["Message"] = feed.DisplayName + " added";
}
catch (Exception ex)
{
TempData["Error"] = "Error: " + ex.Message.ToString();
}
}
return RedirectToAction("Index");
}
public void Fetch(Feed feed)
{
var source = GetFeed(HttpUtility.UrlDecode(feed.URL));
var syndicationItems = source.Items.ToList();
var items = new List<Item>();
foreach (var i in syndicationItems)
{
// An article link is required... this is how we uniquely identify articles.
var link = i.Links.FirstOrDefault(x => x.RelationshipType == "alternate");
if (link == null)
{
continue;
}
string itemUrl = (link.Uri.ToString());
var item = new Item { ItemID = 0 };
item.FeedID = feed.FeedID;
item.URL = itemUrl;
item.IsStarred = false;
item.IsRead = false;
item.Title = (i.Title != null) ? i.Title.Text : "No title";
if (IsValidSqlDateTime(i.PublishDate))
{
item.PublishDate = i.PublishDate.DateTime;
}
else
{
item.PublishDate = DateTime.Now;
}
// The content may be encoded. Go find the encoded content XML node and get the content.
StringBuilder sb = new StringBuilder();
foreach (SyndicationElementExtension extension in i.ElementExtensions)
{
XElement e = extension.GetObject<XElement>();
if (e.Name.LocalName == "encoded" && e.Name.Namespace.ToString().Contains("content"))
{
sb.Append(e.Value);
}
}
item.Content = sb.ToString();
// Otherwise use the summary
if (item.Content == string.Empty && i.Summary != null)
{
item.Content = i.Summary.Text;
}
item.Content = this.ScrubScripts(item.Content);
items.Add(item);
}
// Order the list and save it to the database
foreach (var i in items.OrderBy(x => x.PublishDate))
{
// Check if we've already saved this item
if (!_repository.Items.Any(x => x.URL == i.URL))
{
i.FetchDate = DateTime.Now;
// Don't save advertisements
if (!i.Title.ToLower().Contains("sponsored post"))
{
_repository.SaveItem(i);
}
}
}
feed.LastRefresh = DateTime.Now;
_repository.SaveFeed(feed);
}
public void FillFeed(Feed feed)
{
SyndicationFeed source = GetFeed(feed.URL);
if (source == null)
{
throw new Exception("Not a valid Atom or RSS feed.");
}
var link = source.Links.FirstOrDefault(x => x.RelationshipType == "alternate");
feed.BlogURL = link.GetAbsoluteUri().AbsoluteUri;
feed.DisplayName = source.Title.Text;
if (feed.DisplayName == string.Empty)
{
feed.DisplayName = link.GetAbsoluteUri().Host;
}
// Load the favicon
byte[] bytes = new byte[0];
var imageAddress = "http://" + link.Uri.Host + "/favicon.ico";
try
{
WebClient client = new WebClient();
MemoryStream stream = new MemoryStream(client.DownloadData(imageAddress));
feed.Favicon = stream.ToArray();
}
catch
{
// We'll let it pass if we can't find the image
}
}
public void DeleteFeed(Feed feed)
{
_feedTable.DeleteOnSubmit(feed);
_context.SubmitChanges();
}
public void Fetch(Feed feed)
{
var source = GetFeed(HttpUtility.UrlDecode(feed.URL));
var syndicationItems = source.Items.ToList();
var items = new List <Item>();
foreach (var i in syndicationItems)
{
// An article link is required... this is how we uniquely identify articles.
var link = i.Links.FirstOrDefault(x => x.RelationshipType == "alternate");
if (link == null)
{
continue;
}
string itemUrl = (link.Uri.ToString());
var item = new Item {
ItemID = 0
};
item.FeedID = feed.FeedID;
item.URL = itemUrl;
item.IsStarred = false;
item.IsRead = false;
item.Title = (i.Title != null) ? i.Title.Text : "No title";
if (IsValidSqlDateTime(i.PublishDate))
{
item.PublishDate = i.PublishDate.DateTime;
}
else
{
item.PublishDate = DateTime.Now;
}
// The content may be encoded. Go find the encoded content XML node and get the content.
StringBuilder sb = new StringBuilder();
foreach (SyndicationElementExtension extension in i.ElementExtensions)
{
XElement e = extension.GetObject <XElement>();
if (e.Name.LocalName == "encoded" && e.Name.Namespace.ToString().Contains("content"))
{
sb.Append(e.Value);
}
}
item.Content = sb.ToString();
// Otherwise use the summary
if (item.Content == string.Empty && i.Summary != null)
{
item.Content = i.Summary.Text;
}
item.Content = this.ScrubScripts(item.Content);
items.Add(item);
}
// Order the list and save it to the database
foreach (var i in items.OrderBy(x => x.PublishDate))
{
// Check if we've already saved this item
if (!_repository.Items.Any(x => x.URL == i.URL))
{
i.FetchDate = DateTime.Now;
// Don't save advertisements
if (!i.Title.ToLower().Contains("sponsored post"))
{
_repository.SaveItem(i);
}
}
}
feed.LastRefresh = DateTime.Now;
_repository.SaveFeed(feed);
}
