/// <summary>
/// Instantiate w new email model
/// </summary>
public Email(string fromName, string fromEmail, string toName, string toEmail, string subject, EmailTemplates template)
{
this.fromName = fromName;
this.fromEmail = fromEmail;
this.toName = toName;
this.toEmail = toEmail;
this.subject = subject;
this.template = RepoEmail.GetTemplate(template);
}
/// <summary>
/// Add this email message to the queue for sending out by the email service.
/// </summary>
public void AddToSendingQueue()
{
if (MergeFields.Count == 0)
{
throw new InvalidOperationException("Cannot proceed without any MergeFields!");
}
var sb = new StringBuilder(template);
foreach (var f in MergeFields)
{
sb.Replace("{" + f.Key + "}", f.Value);
}
template = sb.ToString();
RepoEmail.Save(ToEntity());
}
protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
using (var smtp = new SmtpClient())
{
var lastActiveAt = DateTime.UtcNow;
var msgs = new List <EmailMessage>();
while (isProduction && !stoppingToken.IsCancellationRequested)
{
if (!startMsgLogged)
{
startMsgLogged = true;
log.LogWarning("EMAIL SERVICE HAS STARTED...[" + settings.Username + "]" + Environment.NewLine);
}
msgs = RepoEmail.FetchNextBatch(settings.BatchSize);
if (msgs.Count > 0)
{
if (!smtp.IsConnected)
{
try
{
await smtp.ConnectAsync(settings.Server, settings.Port, true, stoppingToken);
await smtp.AuthenticateAsync(settings.Username, settings.Password, stoppingToken);
lastActiveAt = DateTime.UtcNow;
}
catch (Exception x)
{
log.LogError(x, "COULD NOT CONNECT TO SMTP SERVER SUCCESSFULLY!!!" + "[" + settings.Username + "]" + Environment.NewLine);
await Task.Delay((int)TimeSpan.FromMinutes(10).TotalMilliseconds);
}
}
if (smtp.IsConnected && smtp.IsAuthenticated)
{
foreach (var m in msgs)
{
try
{
await smtp.SendAsync(ComposeEmail(m), stoppingToken);
lastActiveAt = DateTime.UtcNow;
RepoEmail.MarkAsSent(m.ID);
}
catch (Exception x)
{
log.LogError(x, "COULD NOT SEND EMAIL VIA SMTP SERVER!!!" + Environment.NewLine);
break;
}
}
}
}
else
{
if (smtp.IsConnected && DateTime.UtcNow.Subtract(lastActiveAt).TotalSeconds >= 30)
{
await smtp.DisconnectAsync(true, stoppingToken);
}
await Task.Delay((int)TimeSpan.FromSeconds(10).TotalMilliseconds);
}
}
}
}
