private async Task SendMail(EmailTypes emailType, SendGridMessage message, int userId)
{
if (message.To.Length != 1)
{
throw new LogReadyException(LogTag.UnsupportedUsageOfSendMail, new { userId, emailType });
}
var toEmail = message.To.First().Address;
if (toEmail.EndsWith("@test.com") && toEmail.EndsWith("@fake.fake"))
{
return;
}
QuotaValidationResult result = _quotaValidator.ValidateQuota(emailType, message, userId);
if (result.IsValid)
{
await _sgTransport.DeliverAsync(message);
await _sgLogger.LogEmailToDisk(emailType, message.To.First().Address, message.Subject, message.Html ?? message.Text, userId);
}
else
{
await SendQuotaExceedNotification(result, emailType, message, userId);
}
}
private QuotaValidationResult ValidateMessageNotification(SendGridMessage message, int userId)
{
string emailAddress = message.To.First().Address;
PrepareCountersIfNeeded(emailAddress, userId);
EmailCountersStorage.TotalByEmail[emailAddress] += 1;
EmailCountersStorage.Total += 1;
QuotaValidationResult totalByEmailResult = CheckTotalByEmail(emailAddress);
if (totalByEmailResult.IsValid == false)
{
return(totalByEmailResult);
}
QuotaValidationResult totalResult = CheckTotal();
if (totalResult.IsValid == false)
{
return(totalResult);
}
return(QuotaValidationResult.Success);
}
private QuotaValidationResult CheckTotal()
{
if (EmailCountersStorage.Total > EmailsTotalQuota)
{
var quotaExceedData = QuotaExceedData.Create(EmailQuotaType.TotalSentEmails, EmailsTotalQuota, EmailCountersStorage.Total);
return(QuotaValidationResult.GetValidationExccedResult(quotaExceedData));
}
return(QuotaValidationResult.Success);
}
private async Task SendQuotaExceedNotification(QuotaValidationResult quotaExceededResult, EmailTypes emailType, SendGridMessage message, int userId)
{
//Andriy: Send email notification only if quota exceeded first time.
if (quotaExceededResult.ExceedData.Value == quotaExceededResult.ExceedData.Quota + 1)
{
var notificationMessage = new SendGridMessage
{
From = new MailAddress(HellolingoEmailAddresses.Default, "HL"),
To = new[] { new MailAddress(HellolingoEmailAddresses.Admin) },
Subject = $"{emailType} quota exceeded",
};
string template = @"
<style>
body { font: 12px arial; }
table { border-collapse: collapse; font-size: 13px;}
td { border: solid lightgrey 1px; padding: 2px 5px; }
td:nth-child(2) { font-weight: bold }
.everyone { font-weight:bold; color: green }
.ephemeral { font-weight:bold; color: orange }
.sender { font-weight:bold; color: red }
.button {
padding: 8px; border-radius: 8px;
color: black; text-decoration: none;
line-height: 36px;
}
.button-green { background-color: green; border: solid 3px green }
.button-red { background-color: red; border: solid 3px red }
</style>
<h3>Emails quota exceeded</h3>
<table>
<tr><td>When</td><td>#When#</td></tr>
<tr><td>Email type</td><td>#EmailType#</td></tr>
<tr><td>Quota type</td><td>#QuotaType#</td></tr>
<tr><td>Quota value</td><td>#QuotaValue#</td></tr>
<tr><td>Email address</td><td>#EmailAddress#</td></tr>
<tr><td>Email subject</td><td>#EmailSubject#</td></tr>
</table>
<h4>Email body</h4>
<div>#EmailBody#</div>";
string notificationHtml = template.Replace("#When#", DateTime.Now.ToString(DateTimeFormat))
.Replace("#EmailType#", emailType.ToString())
.Replace("#QuotaType#", quotaExceededResult.ExceedData.QuotaType.ToString())
.Replace("#QuotaValue#", quotaExceededResult.ExceedData.Quota.ToString())
.Replace("#EmailAddress#", message.To.First().Address)
.Replace("#EmailSubject#", message.Subject)
.Replace("#EmailBody#", message.Html ?? message.Text);
notificationMessage.Html = notificationHtml;
await _sgTransport.DeliverAsync(notificationMessage);
}
await _sgLogger.LogQuotaExceedEmailToDisk(emailType, message.To.FirstOrDefault()?.Address, message.Subject, message.Html ?? message.Text, userId);
}
private QuotaValidationResult CheckEmailValidationsTotal(string emailAddress)
{
int totalValidationsValue = EmailCountersStorage.EmailVerificationsTotal[emailAddress];
if (totalValidationsValue > EmailValidationsTotalQuota)
{
var quotaExceedData = QuotaExceedData.Create(EmailQuotaType.EmailVerificationGlobally, EmailValidationsTotalQuota, totalValidationsValue);
return(QuotaValidationResult.GetValidationExccedResult(quotaExceedData));
}
return(QuotaValidationResult.Success);
}
private QuotaValidationResult CheckEmailValidationWithUserId(int userId)
{
int userValidationValue = EmailCountersStorage.EmailVerificationsByUserId[userId];
if (userValidationValue > EmailValidationByUserIdQuota)
{
var quotaExceedData = QuotaExceedData.Create(EmailQuotaType.EmailVerificationByUserId, EmailValidationByUserIdQuota, userValidationValue);
return(QuotaValidationResult.GetValidationExccedResult(quotaExceedData));
}
return(QuotaValidationResult.Success);
}
private QuotaValidationResult CheckEmailValidationWithEmail(string emailAddress)
{
int emailValidationValue = EmailCountersStorage.EmailVerificationsByEmail[emailAddress];
if (emailValidationValue > EmailValidationByEmailQuota)
{
var quotaExceedData = QuotaExceedData.Create(EmailQuotaType.EmailVerificationByEmail, EmailValidationByEmailQuota, emailValidationValue);
return(QuotaValidationResult.GetValidationExccedResult(quotaExceedData));
}
return(QuotaValidationResult.Success);
}
private QuotaValidationResult CheckTotalByEmail(string emailAddress)
{
int totalByEmailValue = EmailCountersStorage.TotalByEmail[emailAddress];
if (totalByEmailValue > TotalByEmailQuota)
{
var quotaExceedData = QuotaExceedData.Create(EmailQuotaType.SameEmailAddress, TotalByEmailQuota, totalByEmailValue);
return(QuotaValidationResult.GetValidationExccedResult(quotaExceedData));
}
return(QuotaValidationResult.Success);
}
private QuotaValidationResult ValidateEmailVerificationMessage(SendGridMessage message, int userId)
{
string emailAddress = message.To.First().Address;
PrepareCountersIfNeeded(emailAddress, userId);
EmailCountersStorage.EmailVerificationsByEmail[emailAddress] += 1;
EmailCountersStorage.EmailVerificationsByUserId[userId] += 1;
EmailCountersStorage.EmailVerificationsTotal[emailAddress] += 1;
EmailCountersStorage.TotalByEmail[emailAddress] += 1;
EmailCountersStorage.Total += 1;
QuotaValidationResult emailValidationByEmailResult = CheckEmailValidationWithEmail(emailAddress);
if (emailValidationByEmailResult.IsValid == false)
{
return(emailValidationByEmailResult);
}
QuotaValidationResult emailValidationByUserIdResult = CheckEmailValidationWithUserId(userId);
if (emailValidationByUserIdResult.IsValid == false)
{
return(emailValidationByUserIdResult);
}
QuotaValidationResult emailValidationTotalResult = CheckEmailValidationsTotal(emailAddress);
if (emailValidationTotalResult.IsValid == false)
{
return(emailValidationTotalResult);
}
QuotaValidationResult totalByEmailResult = CheckTotalByEmail(emailAddress);
if (totalByEmailResult.IsValid == false)
{
return(totalByEmailResult);
}
QuotaValidationResult totalResult = CheckTotal();
if (totalResult.IsValid == false)
{
return(totalResult);
}
return(QuotaValidationResult.Success);
}