public ActionResult Create(Link link)
{
ViewBag.Title = "Create a single-use link.";
ViewBag.Message = "The link you create here will only serve once. This is useful to limit the sharing of content.";
ModelState.Remove("ShortUrl");
try
{
if (ModelState.IsValid)
{
string shortLink = Guid.NewGuid().ToString().Substring(0, 6);
//TODO - This may not scale
while (database.Links.Count(a => a.ShortUrl.Equals(shortLink, StringComparison.OrdinalIgnoreCase)) > 0)
{
shortLink = Guid.NewGuid().ToString().Substring(0, 6);
}
link.ShortUrl = shortLink;
database.Links.Add(link);
database.SaveChanges();
return RedirectToAction("Success", new { Id = link.ShortUrl });
}
else
{
return View(link);
}
}
catch (Exception e)
{
ViewBag.Error = e.GetBaseException().Message;
return View(link);
}
}
//
// GET: /Links/Create
public ActionResult Create()
{
ViewBag.Title = "Create a single-use link.";
ViewBag.Message = "The link you create here will only serve once. This is useful to limit the sharing of content.";
Link newLink = new Link();
return View(newLink);
}
private void SendNotification(Link link)
{
if (!string.IsNullOrWhiteSpace(link.OptionalEmailAddress))
{
EmailHelper.SendEmailAsync("LinkOnce Notifier <*****@*****.**>",
link.OptionalEmailAddress,
"Your link has been used",
"<html><body><h3>Your link has been used</h3><p>The link to " + link.Destination + " was retrieved " + link.DateUsed.ToLongDateString() +
" at " + link.DateUsed.ToLongTimeString() + "</p>" +
"<p>This link is no longer usable</p>" +
"<p class='footer'>You are receiving this message because you opted to be notified when this link was used.</p>" +
"</body></html>", true);
}
}
private void PrepareHeaders(Link link, WebResponse resp)
{
Response.ContentType = resp.ContentType;
foreach (var h in resp.Headers.AllKeys)
{
Response.Headers.Add(h, resp.Headers[h]);
}
if (Response.Headers["Content-Disposition"] == null)
{
Response.Headers.Add("Content-Disposition", "attachment; filename=" + Path.GetFileName(link.Destination));
}
}