public URL InsertNewURL(URL urldata)
{
if (IsAliasExistsForThisOriginalURL(urldata))
{
urldata.Status = Status.AliasExists;
}
else
{
if (IsAlreadyShortened(urldata))
{
urldata.Status = Status.URLExists;
urldata.Id = GetIdByOriginalURL(urldata.Original).Id;
}
else
{
urldata.Status = Status.NewURL;
if (urldata.Id == String.Empty)
urldata.Id = AlphabetTest.Encode(urlDataSet.GetNextId());
urlDataSet.PersistUrl(urldata);
}
}
return urldata;
}
public bool AliasExists(URL urldata)
{
if (String.IsNullOrEmpty(urldata.Id))
return false;
return (from element in urlDataSet.Descendants("url")
where element.Attribute("id").Value == urldata.Id
select element.Attribute("id").Value).Count() > 0;
}
private bool IsAlreadyShortened(URL urldata)
{
return urlDataSet.OriginalUrlExists(urldata);
}
private bool IsAliasExistsForThisOriginalURL(URL urldata)
{
return urlDataSet.AliasExists(urldata);
}
public ActionResult Default(URL url)
{
return View(url);
}
public ActionResult Create(URL url)
{
return View(url);
}
public ActionResult Copy(URL url)
{
return View(url);
}
public void PersistUrl(URL urldata)
{
var doc = urlDataSet;
var root = new XElement("url");
root.Add(new XAttribute("original", urldata.Original));
root.Add(new XAttribute("id", urldata.Id));
root.Add(new XAttribute("created", urldata.Created));
root.Add(new XAttribute("createdby", urldata.CreatedBy));
root.Add(new XAttribute("hits", urldata.Hits));
doc.Element("root").Add(root);
var nextIdValue = GetNextId() + 1;
doc.Root.SetAttributeValue("nextIdValue", nextIdValue);
doc.Save(xmlFile);
}
public bool OriginalUrlExists(URL urldata)
{
return (from element in urlDataSet.Descendants("url")
where element.Attribute("original").Value == urldata.Original
select element.Attribute("original").Value).Count() > 0;
}
