app/src/services/mailer.ts

import nodemailer from "nodemailer";
import { config } from "../config/env";
import { getSystemSettings } from "./system-settings";

const transporter = nodemailer.createTransport({
  sendmail: true,
  newline: "unix",
  path: "/usr/sbin/sendmail",
});

export async function sendMail(
  to: string,
  subject: string,
  html: string,
): Promise<boolean> {
  const settings = await getSystemSettings();
  const from =
    settings.smtp_from ||
    config.email.smtpFrom ||
    config.email.contactFrom ||
    "noreply@example.com";
  const fromName =
    settings.smtp_from_name || config.email.smtpFromName || "System";

  try {
    await transporter.sendMail({
      from: { name: fromName, address: from },
      to,
      subject,
      html,
    });
    return true;
  } catch (err) {
    console.error(`Mailer error: failed to send to ${to}:`, err);
    return false;
  }
}