import nodemailer from 'nodemailer';
import type { Transporter } from 'nodemailer';

let transporter: Transporter | null = null;

export function getNodemailerTransporter(): Transporter {
  if (transporter) return transporter;

  transporter = nodemailer.createTransport({
    host: process.env.SMTP_HOST,
    port: Number(process.env.SMTP_PORT ?? 587),
    secure: process.env.SMTP_SECURE === 'true',
    auth: {
      user: process.env.SMTP_USER,
      pass: process.env.SMTP_PASS,
    },
  });

  return transporter;
}