public void GetArticles(Channel c)
{
if (c.LastUpdate.HasValue)
{
DateTime last = c.LastUpdate.Value;
DateTime now = DateTime.Now;
if (now.Minute == last.Minute && (now - last).TotalMinutes < 5) return;
}
c.LastUpdate = Convert.ToDateTime(MinDBTime);
var client = new WebClient();
client.OpenReadCompleted += (sender, e) =>
{
if (e.Error != null||e.Result == null)
{
c.LastUpdate = Convert.ToDateTime(MinDBUpdated);
return;
}
try
{
Read(GetEncodedString(e.Result), c, _model);
_model.SubmitChanges();
_model.RefreshArticles();
}
catch (Exception ex)
{
ToastPrompt toast = new ToastPrompt();
toast.Foreground = App.WhiteColor;
toast.MillisecondsUntilHidden = 1500;
toast.Message = AppResources.add_message_error;
toast.Show();
c.LastUpdate = Convert.ToDateTime(MinDBUpdated);
return;
}
};
try
{
client.OpenReadAsync(new Uri(c.URL, UriKind.Absolute));
}
catch
{
c.LastUpdate = Convert.ToDateTime(MinDBUpdated);
}
}
public void GetArticles(Channel c)
{
if (c.LastUpdate.HasValue)
{
DateTime last = c.LastUpdate.Value;
DateTime now = DateTime.Now;
if (now.Minute == last.Minute && (now - last).TotalMinutes < 5) return;
}
c.LastUpdate = Convert.ToDateTime("1900/01/01");
var client = new WebClient();
client.OpenReadCompleted += (sender, e) =>
{
if (e.Error != null)
{
c.LastUpdate = Convert.ToDateTime("1901/01/01");
return;
}
var str = e.Result;
try
{
Read(str, c, _model);
_model.SubmitChanges();
_model.RefreshArticles();
}
catch (Exception)
{
return;
}
finally
{
str.Close();
}
};
try
{
client.OpenReadAsync(new Uri(c.URL, UriKind.Absolute));
}
catch
{
App.ViewModel.DeleteChannel(c);
}
}
private void Read(Stream stream, Channel c, RssViewModel m)
{
var feedFormatter = new Atom10FeedFormatter();
var rssFormater = new Rss20FeedFormatter();
XmlReader atomReader = XmlReader.Create(stream);
SyndicationFeedFormatter f = null;
if (feedFormatter.CanRead(atomReader))
{
feedFormatter.ReadFrom(atomReader);
atomReader.Close();
f = feedFormatter;
}
else
if (rssFormater.CanRead(atomReader))
{
rssFormater.ReadFrom(atomReader);
atomReader.Close();
f = rssFormater;
}
if (f == null) return;
SyndicationFeed feed = f.Feed;
c.Title = feed.Title.Text;
Article[] articles = feed.Items.Select(item => new Article
{
PubDate = item.PublishDate.DateTime,
Description = item.Summary.Text,
Link = item.Links[0].Uri.OriginalString,
Title = item.Title.Text,
}).Select(art => m.AddArticle(art, c)).ToArray();
m.DeleteArticle(c.Articles.Where(x => !x.IsStared).Except(articles).ToArray(), c);
c.LastUpdate = DateTime.Now;
}
public void AddChannel(Channel c)
{
GetArticles(c);
}
private void Read(string xml, Channel c, RssViewModel m)
{
xml = xml.Replace(RemoveLastBuildDate, String.Empty);
var b = Encoding.UTF8.GetBytes(xml);
var settings = new XmlReaderSettings
{
ConformanceLevel = ConformanceLevel.Fragment,
IgnoreWhitespace = true,
IgnoreComments = true
};
var feed = SyndicationFeed.Load(XmlReader.Create(new MemoryStream(b), settings));
if (feed == null) return;
c.Title = feed.Title.Text;
c.Image = feed.ImageUrl.OriginalString;
var articles = feed.Items.Select(item => new Article
{
PubDate = item.PublishDate.DateTime,
AddDate = DateTime.Now,
//The reason for the 8,060-byte limit
Description = item.Summary.Text.Length < 1000 ? item.Summary.Text : item.Summary.Text.Substring(0, 1000),
Link = item.Links[0].Uri.OriginalString,
Title = item.Title.Text,
}).Select(art => m.AddArticle(art, c)).ToArray();
m.DeleteArticle(c.Articles.Where(x => !x.IsStared).Except(articles).ToArray(), c);
c.LastUpdate = DateTime.Now;
}
private void DoAddChanel(object data)
{
var rss = data as string;
if (String.IsNullOrEmpty(rss)) return;
var c = new Channel { URL = rss, Title = rss };
c = AddChannel(c) ? c : Channels.First(x => x.URL == c.URL);
_parseRss.AddChannel(c);
}
public void UpdateChannel(Channel ch)
{
_parseRss.GetArticles(ch);
}
public void RefreshChannel(Channel ch)
{
UpdateChannel(ch);
RefreshArticles();
}
// Remove a to-do task item from the database and collections.
public void DeleteChannel(Channel channel)
{
// Remove the to-do item from the "all" observable collection.
Channels.Remove(channel);
foreach (Article article in channel.Articles)
{
AllArticles.Remove(article);
if (!article.IsRead)
{
NewArticles.Remove(article);
}
_rssDb.Articles.DeleteOnSubmit(article);
}
// Remove the to-do item from the data context.
_rssDb.Channels.DeleteOnSubmit(channel);
}
// Remove a to-do task item from the database and collections.
public void DeleteArticle(Article article, Channel channel)
{
// Remove the to-do item from the "all" observable collection.
AllArticles.Remove(article);
NewArticles.Remove(article);
channel.Articles.Remove(article);
// Remove the to-do item from the data context.
_rssDb.Articles.DeleteOnSubmit(article);
}
// Remove a to-do task item from the database and collections.
public void DeleteArticle(Article[] articles, Channel channel)
{
foreach (Article art in articles)
{
DeleteArticle(art, channel);
}
}
// Add a to-do item to the database and collections.
public bool AddChannel(Channel channel)
{
if (!_rssDb.Channels.Any(o => o.URL == channel.URL))
{
// Add a to-do item to the data context.
_rssDb.Channels.InsertOnSubmit(channel);
// Add a to-do item to the "all" observable collection.
channel.Index = Channels.Count;
Channels.Add(channel);
return true;
}
return false;
}
// Add a to-do item to the database and collections.
public Article AddArticle(Article article, Channel channel)
{
Article art = channel.Articles.FirstOrDefault(x => x.Link == article.Link);
if (art == null)
{
channel.Articles.Add(article);
// Add a to-do item to the data context.
_rssDb.Articles.InsertOnSubmit(article);
return article;
}
return art;
}
/// <summary>
/// The Command function.
/// </summary>
public void MoveChannelUp(Channel ch)
{
int index = Channels.IndexOf(ch) - 1;
if (index < 0) return;
Channels.Remove(ch);
Channels.Insert(index, ch);
ch.Index = index;
}
public void MoveChannelDown(Channel ch)
{
int index = Channels.IndexOf(ch) + 1;
if (index == Channels.Count) return;
Channels.Remove(ch);
Channels.Insert(index, ch);
ch.Index = index;
}
private void PinChannelToStart(Channel channel)
{
string url = string.Format("/ChannelPage.xaml?ID={0}", channel.ID);
ShellTile tileToFind = ShellTile.ActiveTiles.FirstOrDefault(x => x.NavigationUri.ToString().Contains(url));
var secTileData = new StandardTileData
{
Title = channel.Title,
Count = channel.NewCount,
BackgroundImage = new Uri("/Background.png", UriKind.RelativeOrAbsolute),
BackTitle = "Not read articles",
BackContent = channel.Title
};
// If the Tile was found, then update the background image.
if (tileToFind != null)
{
tileToFind.Update(secTileData);
}
else
{
ShellTile.Create(new Uri(url, UriKind.RelativeOrAbsolute), secTileData);
}
}
private void PinChannelToStart(Channel channel)
{
if (channel.LastUpdate.Value == Convert.ToDateTime(MinDBUpdated))
{
ToastPrompt toast = new ToastPrompt();
toast.Foreground = App.WhiteColor;
toast.MillisecondsUntilHidden = 1500;
toast.Message = AppResources.tile_not_allow;
toast.Show();
return;
}
string url = string.Format("/ChannelPage.xaml?ID={0}", channel.ID);
ShellTile tileToFind = ShellTile.ActiveTiles.FirstOrDefault(x => x.NavigationUri.ToString().Contains(url));
var secTileData = App.AddTile(channel.NewCount, channel.ID.ToString(), channel.Title);//channel.GetImage, channel.Title);
// If the Tile was found, then update the background image.
if (tileToFind != null)
{
tileToFind.Update(secTileData);
}
else
{
ShellTile.Create(new Uri(url, UriKind.RelativeOrAbsolute), secTileData);
}
}
/// <summary>
/// The Command function.
/// </summary>
public void MoveChannel(Channel ch, int indexTo)
{
int index = Channels.IndexOf(ch);
if (index == indexTo || index == Channels.Count || index < 0)
{
return;
}
//indexTo = (index < indexTo) ? indexTo-1 : indexTo;
Channels.Remove(ch);
Channels.Insert(indexTo, ch);
ch.Index = indexTo;
}