Function applyResendEvent

apps/api/src/api/webhooks/resend.utils.ts:212–246

(
  event: IResendEventBase
)

 * so route handlers can include it in the ACK response.
 */
export const applyResendEvent = async (
  event: IResendEventBase
): Promise<number> => {
  const reason = resendEventToReason(event);

  if (reason === null) {
    return 0;
  }

  const email = extractRecipient(event);

  if (email === null) {
    logger.warn("Resend deliverability event without recipient address", {
      event: "webhook.resend.recipient_missing",
      type: event.type,
    });

    return 0;
  }

  const input: IRecordSuppressionInput = {
    email,
    reason,
    provider: EMAIL_SUPPRESSION_PROVIDERS.RESEND,
    providerMessageId: event.data?.email_id ?? undefined,
    metadata: {
      type: event.type,
      bounceType: event.data?.bounce?.type ?? null,
      bounceMessage: event.data?.bounce?.message ?? null,
    },
  };
  const result = await emailSuppressionService.record(input);

  return result.recorded ? 1 : 0;
};