private string GetUserIdFromApiKey()
{
var apiKeyHeader = Request.Headers.FirstOrDefault(x => x.Key.EqualsCaseInvariant(ApiKeyHeader));
if (apiKeyHeader.Key.Empty() || apiKeyHeader.Value == null || !apiKeyHeader.Value.Any())
{
return(string.Empty);
}
return(IdentityProvider.GetUserIdForApiKey(apiKeyHeader.Value.First()));
}