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openhamclock/src/hooks/usePropagation.js

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/**
* usePropagation Hook
* Fetches propagation predictions between DE and DX locations
*/
import { useState, useEffect } from 'react';
export const usePropagation = (deLocation, dxLocation) => {
const [data, setData] = useState(null);
const [loading, setLoading] = useState(true);
useEffect(() => {
if (!deLocation || !dxLocation) return;
const fetchPropagation = async () => {
try {
const params = new URLSearchParams({
deLat: deLocation.lat,
deLon: deLocation.lon,
dxLat: dxLocation.lat,
dxLon: dxLocation.lon
});
const response = await fetch(`/api/propagation?${params}`);
if (response.ok) {
const result = await response.json();
setData(result);
}
} catch (err) {
console.error('Propagation error:', err);
} finally {
setLoading(false);
}
};
fetchPropagation();
const interval = setInterval(fetchPropagation, 10 * 60 * 1000); // 10 minutes
return () => clearInterval(interval);
}, [deLocation?.lat, deLocation?.lon, dxLocation?.lat, dxLocation?.lon]);
return { data, loading };
};
export default usePropagation;

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