export async function fetchStations() {
  const res = await fetch('/api/campagne_map_data');
  if (!res.ok) throw new Error(`Errore HTTP ${res.status}`);
  const geojson = await res.json();
  return geojson.features
    .map(f => ({ ...f.properties, pk: parseInt(f.properties.pk, 10) }))
    .sort((a, b) => b.pk - a.pk);
}

export async function fetchDay(id, date) {
  try {
    const res = await fetch(`/api/get_measurements/${id}?day=${date}`);
    if (!res.ok) return [];
    const data = await res.json();
    return data.misure ?? [];
  } catch {
    return [];
  }
}