public ActionResult Create(ShortenedUrl shortUrl)
{
ModelError shortTokenError = EnsureValidShortToken(shortUrl);
if (shortTokenError != null)
{
ModelState.AddModelError("ShortToken", shortTokenError.ErrorMessage);
}
if (ModelState.IsValid)
{
shortUrl.TargetUrl = EnsureHasHttpScheme(shortUrl.TargetUrl);
if (IsValidUri(shortUrl.TargetUrl) == false)
{
ModelState.AddModelError("TargetUrl", "That isn't a valid URL");
return View(shortUrl);
}
shortUrl.CreatedBy = HttpContext.User.Identity.Name;
shortUrl.CreatedOnUTC = DateTime.UtcNow;
webApi.CreateNewUrl(shortUrl);
return RedirectToAction("Index");
}
else
{ return View("Index", shortUrl); }
}
/// <summary>
/// Ensure the supplied short token isn't taken and or is URL encoded.
/// </summary>
/// <param name="shortUrl"></param>
public ModelError EnsureValidShortToken(ShortenedUrl shortUrl)
{
if (shortUrl.ShortToken.IsNullOrWhiteSpace())
{
do
{
shortUrl.ShortToken = Data.RandomStringGenerator.GenerateRandomString(4);
} while (ShortTokenIsAvailable(shortUrl.ShortToken) == false);
}
else
{
if (ShortTokenIsAvailable(shortUrl.ShortToken) == false)
{
return new ModelError("Token [{0}] has already been taken.".FormatWith(shortUrl.ShortToken));
}
}
return null;
}
public void Update(ShortenedUrl shortUrl)
{
repo.Update(shortUrl);
}
public void Delete(ShortenedUrl shortUrl)
{
repo.Remove(shortUrl);
}
public void CreateNewUrl(ShortenedUrl shortUrl)
{
repo.Save(shortUrl);
}
private void IncrementVisitCount(ShortenedUrl shortUrl)
{
shortUrl.VisitsCount += 1;
webApi.Update(shortUrl);
}
public void Update(ShortenedUrl shortUrl)
{
db.Update(shortUrl);
}
public void Save(ShortenedUrl shortened)
{
db.Add(shortened);
}
public void Remove(ShortenedUrl shortUrl)
{
db.Remove(shortUrl);
}
