public static string CreateShortUrlToken()
{
var random = new Random();
string shortUrl = new string(Enumerable.Repeat(chars, 5).Select(s => s[random.Next(s.Length)]).ToArray());
// check uniqueness of token
UrlDal dal = new UrlDal();
Url url = dal.Get(shortUrl);
while (url != null)
{
shortUrl = CreateShortUrlToken();
}
return shortUrl;
}
public ActionResult Redirect()
{
string shortUrl = ControllerContext.RouteData.Values["shorturl"].ToString();
UrlDal urlDal = new UrlDal();
Url url = urlDal.Get(shortUrl);
if (url != null)
{
// add url hit
StatDal statDal = new StatDal();
statDal.Add(new Stat()
{
HitDate = DateTime.Now,
UrlId = url.Id
});
return new RedirectResult(url.LongUrl);
}
return new RedirectToRouteResult(new RouteValueDictionary(new
{
action = "NotFound",
controller = "Home"
}));
}
