private ShortUrlResult Create(string url, string aliasName, string ipAddress, string userName, string apiKey, bool useUserName)
{
if (!string.IsNullOrWhiteSpace(url))
{
// add the protocol if missing
if (!url.StartsWith("http://", StringComparison.OrdinalIgnoreCase) &&
!url.StartsWith("https://", StringComparison.OrdinalIgnoreCase))
{
url = "http://" + url;
}
}
ShortUrlResult result = Validation.Validate <ShortUrlResult>(() => string.IsNullOrWhiteSpace(url), "url", TextMessages.UrlCannotBeBlank)
.Or(() => !url.IsWebUrl(), "url", TextMessages.UrlIsNotInValidFormat)
.Or(() => url.StartsWith(urlResolver.ApplicationRoot, StringComparison.OrdinalIgnoreCase), "url", TextMessages.CannotShrinkUrlForItsOwnDomain)
.Or(() => bannedDomainRepository.IsMatching(url), "url", TextMessages.CannotShrinkUrlWhichMatchesWithOurBannedDomains)
.And(() => !string.IsNullOrWhiteSpace(aliasName) && !baseX.IsValid(aliasName), "alias", TextMessages.AliasIsNotValidAliasCanOnlyContainAlphanumericCharacters)
.Or(() => !string.IsNullOrWhiteSpace(aliasName) && reservedAliasRepository.IsMatching(aliasName), "alias", TextMessages.SpecifiedAliasMatchesWithOurReservedAlias.FormatWith(aliasName))
.And(() => string.IsNullOrWhiteSpace(ipAddress), "ipAddress", TextMessages.IpAddressCannotBeBlank)
.Or(() => !ipAddress.IsIPAddress(), "ipAddress", TextMessages.IpAddressIsNotInValidFormat)
.Result();
if (result.RuleViolations.IsEmpty())
{
User user;
result = useUserName ?
ValidateUserName <ShortUrlResult>(userName, out user) :
ValidateApiKey <ShortUrlResult>(apiKey, out user);
if (result.RuleViolations.IsEmpty())
{
string hash = url.ToLower(Culture.Invariant).Hash();
ShortUrl shortUrl = shortUrlRepository.GetByHash(hash);
if (shortUrl == null)
{
// Url does not exist, create it, if url is not valid then we
// will have the error in the rule violations.
ExternalContent externalContent = GetContent(url, out result);
if (result.RuleViolations.IsEmpty())
{
shortUrl = new ShortUrl {
Title = externalContent.Title, Url = url, Domain = new Uri(url, UriKind.Absolute).Host.ToLower(Culture.Current), Hash = hash
};
thumbnail.Capture(url);
shortUrlRepository.Add(shortUrl);
}
}
if (result.RuleViolations.IsEmpty() && (shortUrl != null))
{
if (string.IsNullOrWhiteSpace(aliasName))
{
if (shortUrl.Id == 0)
{
result = CreateWithoutAlias(shortUrl, ipAddress, user, !useUserName);
}
else
{
if (user == null)
{
// Check for existing alias which does not have an associated user;
Alias alias = shortUrl.Aliases.FirstOrDefault(a => a.User == null);
result = alias != null ?
new ShortUrlResult(CreateShortUrlDTO(alias)) :
CreateWithoutAlias(shortUrl, ipAddress, user, !useUserName);
}
else
{
Alias alias = shortUrl.Aliases.FirstOrDefault(a => (a.User != null) && (a.User.Id == user.Id));
result = alias != null?
CreateWithAlias(shortUrl, alias.Name, ipAddress, user, !useUserName) :
CreateWithoutAlias(shortUrl, ipAddress, user, !useUserName);
}
}
}
else
{
result = CreateWithAlias(shortUrl, aliasName, ipAddress, user, !useUserName);
}
if (result.RuleViolations.IsEmpty())
{
unitOfWork.Commit();
}
}
}
}
return(result);
}