Gunakan CreateEmailTemplate dengan AWS SDK

    /// <summary>
    /// Creates an email template with the specified content.
    /// </summary>
    /// <param name="templateName">The name of the email template.</param>
    /// <param name="subject">The subject of the email template.</param>
    /// <param name="htmlContent">The HTML content of the email template.</param>
    /// <param name="textContent">The text content of the email template.</param>
    /// <returns>True if successful.</returns>
    public async Task<bool> CreateEmailTemplateAsync(string templateName, string subject, string htmlContent, string textContent)
    {
        var request = new CreateEmailTemplateRequest
        {
            TemplateName = templateName,
            TemplateContent = new EmailTemplateContent
            {
                Subject = subject,
                Html = htmlContent,
                Text = textContent
            }
        };

        try
        {
            var response = await _sesClient.CreateEmailTemplateAsync(request);
            return response.HttpStatusCode == HttpStatusCode.OK;
        }
        catch (AlreadyExistsException ex)
        {
            Console.WriteLine($"Email template with name {templateName} already exists.");
            Console.WriteLine(ex.Message);
        }
        catch (LimitExceededException ex)
        {
            Console.WriteLine("The limit for email templates has been exceeded.");
            Console.WriteLine(ex.Message);
        }
        catch (TooManyRequestsException ex)
        {
            Console.WriteLine("Too many requests were made. Please try again later.");
            Console.WriteLine(ex.Message);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"An error occurred while creating the email template: {ex.Message}");
        }

        return false;
    }

    try {
      // Create an email template named "weekly-coupons"
      String newsletterHtml = loadFile("resources/coupon_newsletter/coupon-newsletter.html");
      String newsletterText = loadFile("resources/coupon_newsletter/coupon-newsletter.txt");

      CreateEmailTemplateRequest templateRequest = CreateEmailTemplateRequest.builder()
          .templateName(TEMPLATE_NAME)
          .templateContent(EmailTemplateContent.builder()
              .subject("Weekly Coupons Newsletter")
              .html(newsletterHtml)
              .text(newsletterText)
              .build())
          .build();

      sesClient.createEmailTemplate(templateRequest);

      System.out.println("Email template created: " + TEMPLATE_NAME);
    } catch (AlreadyExistsException e) {
      // If the template already exists, skip this step and proceed with the next
      // operation
      System.out.println("Email template already exists, skipping creation...");
    } catch (LimitExceededException e) {
      // If the limit for email templates is exceeded, fail the workflow and inform
      // the user
      System.err.println("You have reached the limit for email templates. Please remove some templates and try again.");
      throw e;
    } catch (Exception e) {
      System.err.println("Error occurred while creating email template: " + e.getMessage());
      throw e;
    }

def main():
    """
    The main function that orchestrates the execution of the workflow.
    """
    print(INTRO)
    ses_client = boto3.client("sesv2")
    workflow = SESv2Workflow(ses_client)
    try:
        workflow.prepare_application()
        workflow.gather_subscriber_email_addresses()
        workflow.send_coupon_newsletter()
        workflow.monitor_and_review()
    except ClientError as e:
        print_error(e)
    workflow.clean_up()



class SESv2Workflow:
    """
    A class to manage the SES v2 Coupon Newsletter Workflow.
    """

    def __init__(self, ses_client, sleep=True):
        self.ses_client = ses_client
        self.sleep = sleep


        try:
            template_content = {
                "Subject": "Weekly Coupons Newsletter",
                "Html": load_file_content("coupon-newsletter.html"),
                "Text": load_file_content("coupon-newsletter.txt"),
            }
            self.ses_client.create_email_template(
                TemplateName=TEMPLATE_NAME, TemplateContent=template_content
            )
            print(f"Email template '{TEMPLATE_NAME}' created successfully.")
        except ClientError as e:
            # If the template already exists, skip and proceed
            if e.response["Error"]["Code"] == "AlreadyExistsException":
                print(f"Email template '{TEMPLATE_NAME}' already exists.")
            else:
                raise e

        let template_html =
            std::fs::read_to_string("../resources/newsletter/coupon-newsletter.html")
                .unwrap_or_else(|_| "Missing coupon-newsletter.html".to_string());
        let template_text =
            std::fs::read_to_string("../resources/newsletter/coupon-newsletter.txt")
                .unwrap_or_else(|_| "Missing coupon-newsletter.txt".to_string());

        // Create the email template
        let template_content = EmailTemplateContent::builder()
            .subject("Weekly Coupons Newsletter")
            .html(template_html)
            .text(template_text)
            .build();

        match self
            .client
            .create_email_template()
            .template_name(TEMPLATE_NAME)
            .template_content(template_content)
            .send()
            .await
        {
            Ok(_) => writeln!(self.stdout, "Email template created successfully.")?,
            Err(e) => match e.into_service_error() {
                CreateEmailTemplateError::AlreadyExistsException(_) => {
                    writeln!(
                        self.stdout,
                        "Email template already exists, skipping creation."
                    )?;
                }
                e => return Err(anyhow!("Error creating email template: {}", e)),
            },
        }