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@ -4,6 +4,29 @@
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*/
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import { useState, useEffect } from 'react';
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// Convert grid square to lat/lon
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function gridToLatLon(grid) {
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if (!grid || grid.length < 4) return null;
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const g = grid.toUpperCase();
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const lon = (g.charCodeAt(0) - 65) * 20 - 180;
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const lat = (g.charCodeAt(1) - 65) * 10 - 90;
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const lonMin = parseInt(g[2]) * 2;
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const latMin = parseInt(g[3]) * 1;
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let finalLon = lon + lonMin + 1;
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let finalLat = lat + latMin + 0.5;
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if (grid.length >= 6) {
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const lonSec = (g.charCodeAt(4) - 65) * (2/24);
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const latSec = (g.charCodeAt(5) - 65) * (1/24);
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finalLon = lon + lonMin + lonSec + (1/24);
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finalLat = lat + latMin + latSec + (0.5/24);
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}
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return { lat: finalLat, lon: finalLon };
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}
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export const usePOTASpots = () => {
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const [data, setData] = useState([]);
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const [loading, setLoading] = useState(true);
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@ -15,16 +38,53 @@ export const usePOTASpots = () => {
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const res = await fetch('/api/pota/spots');
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if (res.ok) {
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const spots = await res.json();
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setData(spots.slice(0, 10).map(s => ({
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// Filter out QRT spots and nearly-expired spots, then sort by most recent
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const validSpots = spots
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.filter(s => {
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// Filter out QRT (operator signed off)
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const comments = (s.comments || '').toUpperCase().trim();
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if (comments === 'QRT' || comments.startsWith('QRT ') || comments.startsWith('QRT,')) return false;
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// Filter out spots expiring within 60 seconds
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if (typeof s.expire === 'number' && s.expire < 60) return false;
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return true;
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})
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.sort((a, b) => {
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// Sort by spotTime descending (newest first)
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const timeA = a.spotTime ? new Date(a.spotTime).getTime() : 0;
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const timeB = b.spotTime ? new Date(b.spotTime).getTime() : 0;
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return timeB - timeA;
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});
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setData(validSpots.map(s => {
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// Use API coordinates, fall back to grid square
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let lat = s.latitude ? parseFloat(s.latitude) : null;
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let lon = s.longitude ? parseFloat(s.longitude) : null;
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if ((!lat || !lon) && s.grid6) {
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const loc = gridToLatLon(s.grid6);
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if (loc) { lat = loc.lat; lon = loc.lon; }
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}
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if ((!lat || !lon) && s.grid4) {
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const loc = gridToLatLon(s.grid4);
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if (loc) { lat = loc.lat; lon = loc.lon; }
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}
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return {
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call: s.activator,
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ref: s.reference,
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freq: s.frequency,
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mode: s.mode,
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name: s.name || s.locationDesc,
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lat: s.latitude,
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lon: s.longitude,
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time: s.spotTime ? new Date(s.spotTime).toISOString().substr(11,5)+'z' : ''
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})));
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locationDesc: s.locationDesc,
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lat,
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lon,
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time: s.spotTime ? new Date(s.spotTime).toISOString().substr(11,5)+'z' : '',
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expire: s.expire || 0
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};
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}));
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}
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} catch (err) {
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console.error('POTA error:', err);
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@ -34,7 +94,7 @@ export const usePOTASpots = () => {
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};
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fetchPOTA();
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const interval = setInterval(fetchPOTA, 2 * 60 * 1000); // 2 minutes
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const interval = setInterval(fetchPOTA, 60 * 1000); // 1 minute (was 2)
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return () => clearInterval(interval);
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}, []);
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accius
2 days ago