/**
 * Custom hook for fetching space data
 */
import { useState, useEffect } from 'react';
import { fetchCelestialPositions } from '../utils/api';
import type { CelestialBody } from '../types';

export function useSpaceData() {
  const [bodies, setBodies] = useState<CelestialBody[]>([]);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState<string | null>(null);

  useEffect(() => {
    async function loadData() {
      try {
        setLoading(true);
        setError(null);

        // Fetch current position - single point in time for today (UTC midnight)
        // This ensures we hit the cache if we already have data for today
        const now = new Date();
        now.setUTCHours(0, 0, 0, 0);

        const data = await fetchCelestialPositions(
          now.toISOString(),
          now.toISOString(), // Same as start - single point in time
          '1d' // Use 1d step for consistency
        );

        setBodies(data.bodies);
      } catch (err) {
        console.error('Failed to fetch celestial data:', err);
        setError(err instanceof Error ? err.message : 'Unknown error');
      } finally {
        setLoading(false);
      }
    }

    loadData();
  }, []);

  return { bodies, loading, error };
}