import { transport } from "./mailer";

// Fire-and-forget by design — callers should not await this in a way that
// blocks or fails the actual error response the customer sees. Wrap
// everything in its own try/catch so a broken mail relay never becomes a
// second, worse failure on top of the one being reported.
export function sendCriticalAlert(subject: string, details: Record<string, unknown>): void {
  transport
    .sendMail({
      from: '"einfach produktiv Alerts" <admin@mk360.de>',
      to: "admin@mk360.de",
      subject: `[einfach produktiv] ${subject}`,
      text: JSON.stringify(details, null, 2),
    })
    .catch((err) => {
      console.error("sendCriticalAlert: failed to send alert email", err);
    });
}

// The *initial* verification email (on registration) is sent by Payload
// itself, via Customers.ts's own afterChange hook — that one fires
// automatically on create and needs no separate wiring. This one is only
// for the "erneut senden" resend path (app/api/account/resend-verification/
// route.ts), which updates the token via the customer's own session
// (app/lib/customerAuth.ts's resendVerificationEmail) but has no Payload
// hook to piggyback on for a plain update, so it sends directly instead —
// same Hostinger transport as the alert above, just a different template.
export async function sendVerificationEmail(to: string, firstName: string, token: string): Promise<void> {
  const url = `https://einfach-produktiv.mk360.de/api/account/verify-email?token=${token}`;
  await transport.sendMail({
    from: '"einfach produktiv" <admin@mk360.de>',
    to,
    subject: "Bitte bestätige deine E-Mail-Adresse",
    html: `<p>Hallo ${firstName},</p><p>bitte bestätige deine E-Mail-Adresse für dein Konto bei einfach produktiv:</p><p><a href="${url}">${url}</a></p><p>Der Link ist 24 Stunden gültig.</p>`,
  });
}