public async Task CheckSiteCertAsync([TimerTrigger("01:00:00:00")] TimerInfo timer, ILogger log)
        {
            try
            {
                if (_SharedBusinessLogic.SharedOptions.CertExpiresWarningDays > 0)
                {
                    //Get the cert thumbprint
                    var certThumprint = _SharedBusinessLogic.SharedOptions.Website_Load_Certificates.SplitI(";")
                                        .FirstOrDefault();
                    if (string.IsNullOrWhiteSpace(certThumprint))
                    {
                        certThumprint = _SharedBusinessLogic.SharedOptions.CertThumprint.SplitI(";").FirstOrDefault();
                    }

                    if (!string.IsNullOrWhiteSpace(certThumprint))
                    {
                        //Load the cert from the thumprint
                        var cert = HttpsCertificate.LoadCertificateFromThumbprint(certThumprint);

                        var expires = cert.GetExpirationDateString().ToDateTime();
                        if (expires < VirtualDateTime.UtcNow)
                        {
                            await _Messenger.SendGeoMessageAsync(
                                "GPG - WEBSITE CERTIFICATE EXPIRED",
                                $"The website certificate for '{_SharedBusinessLogic.SharedOptions.ExternalHost}' expired on {expires.ToFriendlyDate()} and needs replacing immediately.");
                        }
                        else
                        {
                            var remainingTime = expires - VirtualDateTime.Now;

                            if (expires < VirtualDateTime.UtcNow.AddDays(_SharedBusinessLogic.SharedOptions
                                                                         .CertExpiresWarningDays))
                            {
                                await _Messenger.SendGeoMessageAsync(
                                    "GPG - WEBSITE CERTIFICATE EXPIRING",
                                    $"The website certificate for '{_SharedBusinessLogic.SharedOptions.ExternalHost}' is due expire on {expires.ToFriendlyDate()} and will need replacing within {remainingTime.ToFriendly(maxParts: 2)}.");
                            }
                        }
                    }
                }

                log.LogDebug($"Executed {nameof(CheckSiteCertAsync)} successfully");
            }
            catch (Exception ex)
            {
                var message = $"Failed webjob ({nameof(CheckSiteCertAsync)}):{ex.Message}:{ex.GetDetailsText()}";

                //Send Email to GEO reporting errors
                await _Messenger.SendGeoMessageAsync("GPG - WEBJOBS ERROR", message);

                //Rethrow the error
                throw;
            }
        }
        private X509Certificate2 LoadCertificate(SharedOptions sharedOptions)
        {
            //Load the site certificate
            var certThumprint = sharedOptions.Website_Load_Certificates.SplitI(";").FirstOrDefault();

            if (string.IsNullOrWhiteSpace(certThumprint))
            {
                certThumprint = _sharedOptions.CertThumprint.SplitI(";").FirstOrDefault();
            }

            X509Certificate2 cert = null;

            if (!string.IsNullOrWhiteSpace(certThumprint))
            {
                cert = HttpsCertificate.LoadCertificateFromThumbprint(certThumprint);
                _logger.LogInformation(
                    $"Successfully loaded certificate '{cert.FriendlyName}' expiring '{cert.GetExpirationDateString()}' from thumbprint '{certThumprint}'");
            }
            else
            {
                var certPath = Path.Combine(Directory.GetCurrentDirectory(), @"LocalHost.pfx");
                cert = HttpsCertificate.LoadCertificateFromFile(certPath, "LocalHost");
                _logger.LogInformation(
                    $"Successfully loaded certificate '{cert.FriendlyName}' expiring '{cert.GetExpirationDateString()}' from file '{certPath}'");
            }

            if (sharedOptions.CertExpiresWarningDays > 0)
            {
                var expires = cert.GetExpirationDateString().ToDateTime();
                if (expires < VirtualDateTime.UtcNow)
                {
                    _logger.LogError(
                        $"The website certificate for '{sharedOptions.ExternalHost}' expired on {expires.ToFriendlyDate()} and needs replacing immediately.");
                }
                else
                {
                    var remainingTime = expires - VirtualDateTime.Now;

                    if (expires < VirtualDateTime.UtcNow.AddDays(sharedOptions.CertExpiresWarningDays))
                    {
                        _logger.LogWarning(
                            $"The website certificate for '{sharedOptions.SiteAuthority}' is due expire on {expires.ToFriendlyDate()} and will need replacing within {remainingTime.ToFriendly(maxParts: 2)}.");
                    }
                }
            }

            return(cert);
        }