Handle Unsubscribe Requests

// Inside your webhook handler, after verifying X-Minimo-Signature
const { contact, message } = envelope;

if (isUnsubscribeRequest(message.text)) {
  const res = await fetch('https://api.minimo.it/public/v1/contacts/opt-out', {
    method: 'POST',
    headers: {
      Authorization: `Bearer ${process.env.MINIMO_API_KEY}`,
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({
      phone: contact.phone,
      reason: `Customer wrote: "${message.text}"`,
    }),
  });
  const { data } = await res.json();

  const everything = data.revokedChannels.length > 1;
  await sendWhatsappText(
    contact.phone,
    everything
      ? "Done, you won't receive any more promotional messages from us (WhatsApp, email or SMS)."
      : "Done, you won't receive any more promotional messages from us on WhatsApp.",
  );
}