const now = new Date();
const start = new Date(now.getTime() - 365 * 24 * 60 * 60 * 1000);

const params = new URLSearchParams({
  format: "geojson",
  starttime: start.toISOString(),
  endtime: now.toISOString(),
  minmagnitude: "2.5",
  minlatitude: "32",
  maxlatitude: "42.5",
  minlongitude: "-125",
  maxlongitude: "-114",
  orderby: "time-asc",
});

const url = `https://earthquake.usgs.gov/fdsnws/event/1/query?${params}`;
const response = await fetch(url);
if (!response.ok) {
  throw new Error(`USGS request failed: ${response.status}`);
}

const payload = await response.json();
const features = Array.isArray(payload.features) ? payload.features : [];

const quakes = features
  .map((feature) => {
    const [longitude, latitude] = feature.geometry?.coordinates ?? [];
    const mag = Number(feature.properties?.mag);
    if (
      !Number.isFinite(latitude) ||
      !Number.isFinite(longitude) ||
      !Number.isFinite(mag)
    ) {
      return null;
    }
    return {
      id: feature.id,
      latitude,
      longitude,
      mag,
      place: feature.properties?.place ?? "",
      time: feature.properties?.time ?? null,
    };
  })
  .filter(Boolean);

process.stdout.write(JSON.stringify(quakes));