import nodemailer from "nodemailer";

const host = process.env.SMTP_HOST;
const port = parseInt(process.env.SMTP_PORT || "25", 10);
const user = process.env.SMTP_USER;
const pass = process.env.SMTP_PASS;
const from = process.env.SMTP_FROM || "JobsBoard <notifications@jobsboard.internal>";
const to = process.env.SMTP_TEST_TO || user;

if (!host || !user || !pass) {
  console.error("Missing SMTP_HOST / SMTP_USER / SMTP_PASS in the environment.");
  process.exit(1);
}

const transporter = nodemailer.createTransport({
  host,
  port,
  secure: port === 465 || port === 10465,
  requireTLS: true,
  auth: { user, pass },
  // Local relays such as Proton Mail Bridge present self-signed certs.
  tls: { rejectUnauthorized: false },
});

try {
  const info = await transporter.sendMail({
    from,
    to,
    subject: "JobsBoard SMTP relay test",
    text: "If you received this, the Proton Mail Bridge SMTP relay is working.",
    html: "<p>If you received this, the Proton Mail Bridge SMTP relay is working.</p>",
  });
  console.log("SMTP test email sent:", info.messageId);
  process.exit(0);
} catch (err) {
  console.error("SMTP test failed:", err.message);
  process.exit(1);
}