/// <summary>
/// Funkcja zapisująca wybraną wiadomość do bazy danych
/// </summary>
/// <param name="archiveListCategories">Lista kategorii dostępnych w bazie danych</param>
/// <param name="news">Wiadomość do zapisania</param>
public void AddSelectedArticle(ObservableCollection<Category> archiveListCategories, News news)
{
bool newsExist = _rssContext.News.Any(n => n.Id == news.Id);
if (!newsExist)
{
_rssContext.News.Add(new News
{
Category = news.Category,
Date = news.Date,
Description = news.Description,
Photo = news.Photo,
Title = news.Title,
UrlNews = news.UrlNews,
UrlImage = news.UrlImage,
Id = news.Id
});
_rssContext.SaveChanges();
if (!archiveListCategories.Any(n => n.Name == news.Category))
UpdateArchiveCategory(archiveListCategories, news.Category, true);
}
}
/// <summary>
/// Dekoduje z opisu ze znacznikami HTML do normalnego opisu
/// </summary>
/// <param name="news">Wiadomość do dekodowania</param>
private void ParseDescription(News news)
{
StringWriter myWriter = new StringWriter();
string description = string.Empty;
string start = string.Empty;
string end = ResourceRss.EndDescription;
int index = 0;
HttpUtility.HtmlDecode(news.Description, myWriter);
string decode = myWriter.ToString();
if (decode[0] == Convert.ToChar(ResourceRss.OneSymbol) && decode[1] == Convert.ToChar(ResourceRss.TwoSymbol))
{
start = ResourceRss.StartDescription;
if (news.UrlImage == null && decode.Contains(ResourceRss.CheckedTwice) == false)
start = ResourceRss.StartDescriptionWithoutImage;
index = decode.IndexOf(start);
}
if (!decode.Contains(end))
end = ResourceRss.EndDescriptionBr;
if (index > -1)
{
for (int i = index + start.Length; i < decode.Length; i++)
{
if (i + end.Length < decode.Length)
{
string tmp = decode.Substring(i, end.Length);
if (tmp != end)
description += decode[i];
else
{
if (description != string.Empty)
news.Description = description[0] == '-' ? description.Substring(1) : description;
return;
}
}
}
}
}
/// <summary>
/// Wywołuje funkcje do zapisywania wiadomości do bazy danych
/// </summary>
/// <param name="obj"></param>
private void Save(object obj)
{
News newsSave = new News();
int index = SelectedIndexListBoxNews;
if (obj is Int32)
index = (int)obj;
newsSave.Title = LineNews[index].Title;
newsSave.Description = LineNews[index].Description;
newsSave.Id = LineNews[index].Id;
newsSave.UrlImage = LineNews[index].UrlImage;
newsSave.Category = LineNews[index].Category;
newsSave.UrlNews = LineNews[index].UrlNews;
newsSave.Date = LineNews[index].Date;
newsSave.Photo = GetImageAsByte(newsSave.UrlImage);
RSSrepo rssRepo = new RSSrepo();
rssRepo.AddSelectedArticle(ArchiveListCategories, newsSave);
}
/// <summary>
/// Dekoduje z id ze znacznikami HTML do normalnego id
/// </summary>
/// <param name="news">Wiadomość do dekodowania</param>
public void ParseId(News news)
{
string ipLong = news.Id;
int index = ipLong.IndexOf(ResourceRss.SearchId);
news.Id = ipLong.Substring(index + ResourceRss.SearchId.Length, Convert.ToInt32(ResourceRss.LengthId));
}
/// <summary>
/// Wyświetla informacje wiadomości na zakładce nowe, lub wczytuje wiadomości z bazy na zakładce archiwalne
/// </summary>
private void ReadNews()
{
LineNews = new ObservableCollection<News>();
News = new News();
SelectedIndexListBoxNews = 0;
if (SelectedIndexTab == 0)
Reader.ParseXml(LineNews, ListCategories[SelectedIndexCategories]);
else if (ArchiveListCategories.Any())
{
if (SelectedIndexCategories < 0)
Reader.ReadBase(LineNews, ArchiveListCategories, ArchiveListCategories[0]);
else
Reader.ReadBase(LineNews, ArchiveListCategories, ArchiveListCategories[SelectedIndexCategories]);
}
ShowDescription();
}
