public bool AddRSSInfo(RSSViewModel vm)
{
//pubdate format from http://www.dotnetperls.com/pubdate
IFileProvider provider = _appEnvironment.ContentRootFileProvider;
IDirectoryContents contents = provider.GetDirectoryContents("wwwroot\\content");
if (!contents.Any(c => c.Name == "feed.xml"))
{
if (!CreateXMLFile())
{
return(false);
}
}
XDocument xdoc;
DateTime now = DateTime.Now;
if (!XmlFilePopulated())
{
xdoc = new XDocument(
new XElement("rss", new XAttribute("version", "2.0"),
new XElement("channel", new XElement("title", vm.Title),
new XElement("description", vm.Description),
new XElement("link", vm.Link),
new XElement("pubDate", now.ToString("ddd',' d MMM yyyy HH':'mm':'ss") +
" " +
now.ToString("zzzz").Replace(":", "")),
new XElement("lastBuildDate", now.ToString("ddd',' d MMM yyyy HH':'mm':'ss") +
" " +
now.ToString("zzzz").Replace(":", "")),
new XElement("ttl", vm.TimeToLive))));
}
else
{
xdoc = XDocument.Load(contents.Where(c => c.Name == "feed.xml").FirstOrDefault().CreateReadStream());
xdoc.Descendants("title").FirstOrDefault()?.SetValue(vm.Title);
xdoc.Descendants("description").FirstOrDefault()?.SetValue(vm.Description);
xdoc.Descendants("link").FirstOrDefault()?.SetValue(vm.Link);
xdoc.Descendants("lastBuildDate").FirstOrDefault()?.SetValue(now.ToString("ddd',' d MMM yyyy HH':'mm':'ss") +
" " +
now.ToString("zzzz").Replace(":", ""));
xdoc.Descendants("ttl").FirstOrDefault()?.SetValue(vm.TimeToLive);
}
try
{
using (var fileStream = new FileStream(_appEnvironment.ContentRootPath + "\\wwwroot\\content\\feed.xml", FileMode.Create))
{
xdoc.Save(fileStream);
}
}
catch (Exception e)
{
return(false);
}
return(true);
}
public IActionResult Index()
{
var vm = new RSSViewModel();
_rssService.PopulateRSSInfoViewModel(vm);
return(View(vm));
}
public IActionResult Index(RSSViewModel vm)
{
if (ModelState.IsValid)
{
if (!_rssService.AddRSSInfo(vm))
{
return(View(vm));
}
}
return(RedirectToAction("Index", "Home"));
}
public void PopulateRSSInfoViewModel(RSSViewModel vm)
{
IFileProvider provider = _appEnvironment.ContentRootFileProvider;
IDirectoryContents contents = provider.GetDirectoryContents("wwwroot\\content");
if (!contents.Any(c => c.Name == "feed.xml"))
{
CreateXMLFile();
vm.RSSCreated = false;
return;
}
if (!XmlFilePopulated())
{
return;
}
XDocument xdoc = XDocument.Load(contents.Where(c => c.Name == "feed.xml").FirstOrDefault().CreateReadStream());
if (xdoc != null)
{
vm.Title = xdoc.Descendants("title").FirstOrDefault()?.Value;
vm.Description = xdoc.Descendants("description").FirstOrDefault()?.Value;
vm.Link = xdoc.Descendants("link").FirstOrDefault()?.Value;
string pubDate = xdoc.Descendants("pubDate").FirstOrDefault()?.Value;
DateTime pubDateTime;
if (DateTime.TryParse(pubDate, out pubDateTime))
{
vm.PublishedDate = pubDateTime;
}
string updateDate = xdoc.Descendants("lastBuildDate").FirstOrDefault()?.Value;
DateTime updateDateTime;
if (DateTime.TryParse(updateDate, out updateDateTime))
{
vm.UpdatedDate = updateDateTime;
}
int ttl;
if (int.TryParse(xdoc.Descendants("ttl").FirstOrDefault()?.Value, out ttl))
{
vm.TimeToLive = ttl;
}
vm.RSSCreated = true;
}
}
