public ulong ClicksOnShortURL(string shortURL)
{
ShortenedURL shortenedURL = GetShortenedURL(shortURL);
if (shortenedURL == null) // shortened URL does not exist.
{
return(0);
}
return(shortenedURL.Clicks);
}
public string Expand(string shortURL)
{
ShortenedURL shortenedURL = GetShortenedURL(shortURL);
if (shortenedURL == null) // shortened URL does not exist.
{
return(string.Empty);
}
shortenedURL.Expanded();
return(shortenedURL.URL);
}
public string Shorten(string url)
{
ShortenedURL shortenedURL = shortenedURLRepo.GetByURL(url);
if (shortenedURL == null) // shorten this URL for the first time
{
shortenedURL = new ShortenedURL(url, hasher.NextHash(lastHash));
shortenedURLRepo.Save(shortenedURL);
lastHash = shortenedURL.Hash;
}
return(FormatHashAsURL(shortenedURL.Hash));
}
