public static string Value(this EmailType val)
{
var attributes = (DescriptionAttribute[])val.GetType().GetField(val.ToString()).GetCustomAttributes(typeof(DescriptionAttribute), false);
return(attributes.Length > 0 ? attributes[0].Description : string.Empty);
}
public static async Task <HttpResponseMessage> Run(string jsonContent, TraceWriter log)
{
log.Info("C# NHS111OnlineMailSender trigger function processed a request.");
var sendMail = JsonConvert.DeserializeObject <SendMail>(jsonContent);
if (!EmailType.IsSupported(sendMail.EmailType))
{
log.Info($"Email type {sendMail.EmailType} is not supported!");
return(new HttpResponseMessage(HttpStatusCode.InternalServerError));
}
if (sendMail.ToEmails == null || sendMail.Body == null || sendMail.Subject == null)
{
log.Info("Usage: Args[]: str:RecipientEmail, str:Subject, str:Body");
return(new HttpResponseMessage(HttpStatusCode.InternalServerError));
}
if (IsValidEmails(sendMail.ToEmails) && (sendMail.CcEmails == null || IsValidEmails(sendMail.CcEmails)))
{
var azureServiceTokenProvider = new AzureServiceTokenProvider();
var keyVaultClient = new KeyVaultClient(new KeyVaultClient.AuthenticationCallback(azureServiceTokenProvider.KeyVaultTokenCallback));
var emailType = EmailType.GetType(sendMail.EmailType);
var keyVaultName = ConfigurationManager.AppSettings["KeyVaultName"];
log.Info($"Using key vault {keyVaultName}");
var mailAccount = await keyVaultClient.GetSecretAsync($"https://{keyVaultName}.vault.azure.net/secrets/{emailType.AccountKey}").ConfigureAwait(false);
var mailPassword = await keyVaultClient.GetSecretAsync($"https://{keyVaultName}.vault.azure.net/secrets/{emailType.PasswordKey}").ConfigureAwait(false);
log.Info($"Exchange user {mailAccount.Value}");
var service = new ExchangeService(ExchangeVersion.Exchange2013)
{
Credentials = new WebCredentials(mailAccount.Value, mailPassword.Value),
Url = new Uri("https://mail.nhs.net/EWS/Exchange.asmx")
};
var message = new EmailMessage(service)
{
Subject = sendMail.Subject,
Body = new MessageBody(BodyType.HTML, $"{sendMail.Body}{(sendMail.EmailType != EmailType.DataExtract.Name ? NoReply : string.Empty)}")
};
foreach (var toEmail in sendMail.ToEmails)
{
message.ToRecipients.Add(toEmail);
}
if (sendMail.CcEmails != null)
{
foreach (var ccEmail in sendMail.CcEmails)
{
message.CcRecipients.Add(ccEmail);
}
}
if (sendMail.Attachments != null)
{
foreach (var attachment in sendMail.Attachments)
{
message.Attachments.AddFileAttachment(attachment.Key, Convert.FromBase64String(attachment.Value));
}
}
try
{
message.SendAndSaveCopy();
return(new HttpResponseMessage(HttpStatusCode.OK));
}
catch (Exception e)
{
log.Info(e.Message);
return(new HttpResponseMessage(HttpStatusCode.InternalServerError));
}
}
log.Info("One or more email addresses not valid");
return(new HttpResponseMessage(HttpStatusCode.NoContent));
}