const nodemailer = require("nodemailer");

async function sendReportMail({ smtpConfig, subject, html, text }) {
  if (!smtpConfig.enabled) {
    return { skipped: true, reason: "SMTP_ENABLED=false" };
  }

  if (
    !smtpConfig.host ||
    !smtpConfig.port ||
    !smtpConfig.user ||
    !smtpConfig.pass ||
    !smtpConfig.from ||
    smtpConfig.to.length === 0
  ) {
    throw new Error(
      "SMTP ist aktiviert, aber SMTP_HOST/PORT/USER/PASS/FROM/TO sind nicht vollstaendig gesetzt."
    );
  }

  const transport = nodemailer.createTransport({
    host: smtpConfig.host,
    port: smtpConfig.port,
    secure: smtpConfig.secure,
    auth: {
      user: smtpConfig.user,
      pass: smtpConfig.pass,
    },
  });

  const info = await transport.sendMail({
    from: smtpConfig.from,
    to: smtpConfig.to.join(", "),
    subject,
    text,
    html,
  });

  return { skipped: false, messageId: info.messageId };
}

module.exports = {
  sendReportMail,
};