// utils/mail.ts – simple wrapper around nodemailer
import nodemailer from 'nodemailer';

// Load SMTP configuration from environment variables
const smtpConfig = {
  host: process.env.SMTP_HOST,
  port: Number(process.env.SMTP_PORT),
  secure: process.env.SMTP_SECURE === 'true' || process.env.SMTP_SECURE === '1', // true for 465, false for other ports
  auth: {
    user: process.env.SMTP_USER,
    pass: process.env.SMTP_PASS,
  },
};

// Create a reusable transporter. If any required var is missing, nodemailer will throw on send.
const transporter = nodemailer.createTransport(smtpConfig);

/**
 * Send an email.
 * @param to Recipient address
 * @param subject Subject line
 * @param text Plain‑text body
 * @param html Optional HTML body
 */
export async function sendMail({
  to,
  subject,
  text,
  html,
}: {
  to: string;
  subject: string;
  text: string;
  html?: string;
}) {
  const info = await transporter.sendMail({
    from: smtpConfig.auth.user,
    to,
    subject,
    text,
    html,
  });
  return info;
}