// Simple pass-through for Google Ads Enhanced Conversions
async function transform({ events, profiles }) {
  return events.map(ev => ({
    ...ev,
    event_name: ev.event_type,
    user_data: { email: profiles.find(p => p.id === ev.user_id)?.email },
  }));
}

/**
 * Meta Conversions API (CAPI) send function.
 * pixel_id and meta_access_token must be stored in Secrets.
 */
async function send({ events, params, secrets }) {
  const pixelId     = secrets.meta_pixel_id;
  const accessToken = secrets.meta_access_token;
  const url = `https://graph.facebook.com/v19.0/${pixelId}/events?access_token=${accessToken}`;

  const payload = {
    data: events.map(ev => ({
      event_name:        ev.event_type,
      event_time:        Math.floor(new Date(ev.event_time).getTime() / 1000),
      action_source:     "website",
      user_data:         ev.user_data,
      custom_data:       ev.event_payload,
      event_source_url:  ev.url,
      event_id:          ev.event_id,
    })),
  };

  const response = await fetch(url, {
    method:  "POST",
    headers: { "Content-Type": "application/json" },
    body:    JSON.stringify(payload),
  });

  return { ok: response.ok, status: response.status };
}