public SendMailResult SendMail(SendMailRequest request)
{
try
{
return(SendMailRequestProcessor.ProcessSendMailRequest(request));
}
catch (Exception e)
{
SendMailResult result = new SendMailResult();
result.Status = SendMailResultStatus.Error.ToString();
result.Messages.Add(e.Message);
return(result);
}
}
/// <summary>
/// Process a SendMailRequest, send the email and generate proper response
/// </summary>
/// <param name="request">The request containing email details</param>
/// <returns>The result of the sending email action</returns>
public static SendMailResult ProcessSendMailRequest(SendMailRequest request)
{
SendMailResult result = new SendMailResult();
var providers = GetOrderedMailServiceProviders(request);
// if no ApiKeys are found, we can't use any providers
if (providers.Count == 0)
{
result.Status = SendMailResultStatus.Error.ToString();
result.Messages.Add("No mail service provider available.");
return(result);
}
for (int i = 0; i < providers.Count; i++)
{
try
{
string messageId;
string detailMessage;
bool success = providers[i].SendMail(request, out messageId, out detailMessage);
// add message returned by the provider, if any
if (!String.IsNullOrWhiteSpace(detailMessage))
{
result.Messages.Add(detailMessage);
}
if (success)
{
result.Status = SendMailResultStatus.Success.ToString();
result.MessageId = messageId;
result.ProviderUsed = providers[i].ProviderType.ToString();
return(result);
}
else
{
// we don't know why it failed, so continue and try next provider
result.Status = SendMailResultStatus.Error.ToString();
continue;
}
}
catch (Exception e)
{
result.Status = SendMailResultStatus.Error.ToString();
result.Messages.Add(SendMailRequestProcessor.GetErrorStringFromException(e));
if (e is FormatException)
{
// some of the email address is not correctly formated. stop trying and return the error
return(result);
}
else
{
// for other exceptions, ingore and try next provider
continue;
}
}
}
return(result);
}