static bool ValidateEmailData(EmailData emailData)
{
if (emailData == null)
{
return(false);
}
if (string.IsNullOrWhiteSpace(emailData.SenderName) ||
string.IsNullOrWhiteSpace(emailData.SenderEmail) ||
string.IsNullOrWhiteSpace(emailData.Subject) ||
string.IsNullOrWhiteSpace(emailData.Message))
{
return(false);
}
try
{
var mailAddress = new MailAddress(emailData.SenderEmail, emailData.SenderName);
}
catch (FormatException)
{
return(false);
}
return(true);
}
public static async Task <IActionResult> Run(
[HttpTrigger(AuthorizationLevel.Anonymous, "POST")]
HttpRequest request,
ILogger log,
CancellationToken cancellationToken)
{
log.LogInformation("SendEmail requested.");
if (request.Body == null)
{
log.LogWarning("SendEmail without HTTP request body.");
return(new BadRequestObjectResult("Expecting email data in the request body."));
}
EmailData emailData = null;
var serializer = JsonSerializer.Create();
using (var reader = new StreamReader(request.Body, Encoding.UTF8))
{
emailData = (EmailData)serializer.Deserialize(reader, typeof(EmailData));
}
if (!ValidateEmailData(emailData))
{
log.LogError("Send email failed: missing email data.");
return(new BadRequestObjectResult("Missing email data: sender name, address, subject, or message."));
}
await SendGridEmail(emailData, cancellationToken);
log.LogInformation("Email sent successfully from '{SenderName}'<{SenderEmail}>.", emailData.SenderName,
emailData.SenderEmail);
return(new OkObjectResult("Email sent successfully."));
}
static Task SendGridEmail(EmailData emailData, CancellationToken cancellationToken)
{
var settingApiKey = Environment.GetEnvironmentVariable("SENDGRID_APIKEY");
var email = new SendGridMessage {
From = new EmailAddress(emailData.SenderEmail, emailData.SenderName)
};
email.AddTos(GetAddresses());
email.SetFrom(new EmailAddress(emailData.SenderEmail, emailData.SenderName));
email.Subject = emailData.Subject.Normalize(NormalizationForm.FormKD);
var message =
$"{emailData.Message}<br><br>{emailData.SenderName}<br>{emailData.SenderEmail}<br>{emailData.Telephone}";
email.HtmlContent = message.Normalize(NormalizationForm.FormKD);
var client = new SendGridClient(settingApiKey);
return(client.SendEmailAsync(email, cancellationToken));
}