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/**
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* OpenHamClock Server v3.9.0
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*
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* Express server that:
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* 1. Serves the static web application
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* 2. Proxies API requests to avoid CORS issues
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* 3. Provides hybrid HF propagation predictions (ITURHFProp + real-time ionosonde)
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* 4. Provides WebSocket support for future real-time features
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*
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* Propagation Model: Hybrid ITU-R P.533-14
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* - ITURHFProp service provides base P.533-14 predictions
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* - KC2G/GIRO ionosonde network provides real-time corrections
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* - Combines both for best accuracy
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*
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* Usage:
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* node server.js
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* PORT=8080 node server.js
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* ITURHFPROP_URL=https://your-service.railway.app node server.js
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*/
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const express = require('express');
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const cors = require('cors');
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const path = require('path');
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const fetch = require('node-fetch');
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const net = require('net');
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const app = express();
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const PORT = process.env.PORT || 3000;
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// ITURHFProp service URL (optional - enables hybrid mode)
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const ITURHFPROP_URL = process.env.ITURHFPROP_URL || null;
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// Log configuration
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if (ITURHFPROP_URL) {
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console.log(`[Propagation] Hybrid mode enabled - ITURHFProp service: ${ITURHFPROP_URL}`);
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} else {
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console.log('[Propagation] Standalone mode - using built-in calculations');
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}
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// Middleware
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app.use(cors());
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app.use(express.json());
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// Serve static files from public directory
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app.use(express.static(path.join(__dirname, 'public')));
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// ============================================
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// API PROXY ENDPOINTS
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// ============================================
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// NOAA Space Weather - Solar Flux
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app.get('/api/noaa/flux', async (req, res) => {
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try {
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const response = await fetch('https://services.swpc.noaa.gov/json/f107_cm_flux.json');
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const data = await response.json();
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res.json(data);
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} catch (error) {
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console.error('NOAA Flux API error:', error.message);
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res.status(500).json({ error: 'Failed to fetch solar flux data' });
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}
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});
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// NOAA Space Weather - K-Index
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app.get('/api/noaa/kindex', async (req, res) => {
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try {
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const response = await fetch('https://services.swpc.noaa.gov/products/noaa-planetary-k-index.json');
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const data = await response.json();
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res.json(data);
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} catch (error) {
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console.error('NOAA K-Index API error:', error.message);
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res.status(500).json({ error: 'Failed to fetch K-index data' });
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}
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});
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// NOAA Space Weather - Sunspots
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app.get('/api/noaa/sunspots', async (req, res) => {
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try {
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const response = await fetch('https://services.swpc.noaa.gov/json/solar-cycle/observed-solar-cycle-indices.json');
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const data = await response.json();
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res.json(data);
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} catch (error) {
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console.error('NOAA Sunspots API error:', error.message);
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res.status(500).json({ error: 'Failed to fetch sunspot data' });
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}
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});
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// Solar Indices with History and Kp Forecast
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app.get('/api/solar-indices', async (req, res) => {
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try {
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const [fluxRes, kIndexRes, kForecastRes, sunspotRes] = await Promise.allSettled([
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fetch('https://services.swpc.noaa.gov/json/f107_cm_flux.json'),
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fetch('https://services.swpc.noaa.gov/products/noaa-planetary-k-index.json'),
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fetch('https://services.swpc.noaa.gov/products/noaa-planetary-k-index-forecast.json'),
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fetch('https://services.swpc.noaa.gov/json/solar-cycle/observed-solar-cycle-indices.json')
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]);
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const result = {
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sfi: { current: null, history: [] },
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kp: { current: null, history: [], forecast: [] },
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ssn: { current: null, history: [] },
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timestamp: new Date().toISOString()
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};
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// Process SFI data (last 30 days)
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if (fluxRes.status === 'fulfilled' && fluxRes.value.ok) {
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const data = await fluxRes.value.json();
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if (data?.length) {
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// Get last 30 entries
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const recent = data.slice(-30);
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result.sfi.history = recent.map(d => ({
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date: d.time_tag || d.date,
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value: Math.round(d.flux || d.value || 0)
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}));
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result.sfi.current = result.sfi.history[result.sfi.history.length - 1]?.value || null;
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}
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}
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// Process Kp history (last 3 days, data comes in 3-hour intervals)
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if (kIndexRes.status === 'fulfilled' && kIndexRes.value.ok) {
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const data = await kIndexRes.value.json();
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if (data?.length > 1) {
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// Skip header row, get last 24 entries (3 days)
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const recent = data.slice(1).slice(-24);
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result.kp.history = recent.map(d => ({
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time: d[0],
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value: parseFloat(d[1]) || 0
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}));
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result.kp.current = result.kp.history[result.kp.history.length - 1]?.value || null;
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}
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}
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// Process Kp forecast
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if (kForecastRes.status === 'fulfilled' && kForecastRes.value.ok) {
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const data = await kForecastRes.value.json();
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if (data?.length > 1) {
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// Skip header row
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result.kp.forecast = data.slice(1).map(d => ({
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time: d[0],
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value: parseFloat(d[1]) || 0
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}));
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}
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}
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// Process Sunspot data (last 12 months)
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if (sunspotRes.status === 'fulfilled' && sunspotRes.value.ok) {
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const data = await sunspotRes.value.json();
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if (data?.length) {
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// Get last 12 entries (monthly data)
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const recent = data.slice(-12);
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result.ssn.history = recent.map(d => ({
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date: `${d['time-tag'] || d.time_tag || ''}`,
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value: Math.round(d.ssn || 0)
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}));
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result.ssn.current = result.ssn.history[result.ssn.history.length - 1]?.value || null;
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}
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}
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res.json(result);
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} catch (error) {
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console.error('Solar Indices API error:', error.message);
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res.status(500).json({ error: 'Failed to fetch solar indices' });
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}
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});
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// DXpedition Calendar - fetches from NG3K ADXO plain text version
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let dxpeditionCache = { data: null, timestamp: 0, maxAge: 30 * 60 * 1000 }; // 30 min cache
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app.get('/api/dxpeditions', async (req, res) => {
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try {
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const now = Date.now();
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console.log('[DXpeditions] API called');
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// Return cached data if fresh
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if (dxpeditionCache.data && (now - dxpeditionCache.timestamp) < dxpeditionCache.maxAge) {
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console.log('[DXpeditions] Returning cached data:', dxpeditionCache.data.dxpeditions?.length, 'entries');
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return res.json(dxpeditionCache.data);
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}
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// Fetch NG3K ADXO plain text version
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console.log('[DXpeditions] Fetching from NG3K...');
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const response = await fetch('https://www.ng3k.com/Misc/adxoplain.html');
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if (!response.ok) {
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console.log('[DXpeditions] NG3K fetch failed:', response.status);
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throw new Error('Failed to fetch NG3K: ' + response.status);
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}
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let text = await response.text();
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console.log('[DXpeditions] Received', text.length, 'bytes raw');
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// Strip HTML tags and decode entities - the "plain" page is actually HTML!
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text = text
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.replace(/<script[^>]*>[\s\S]*?<\/script>/gi, '') // Remove scripts
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.replace(/<style[^>]*>[\s\S]*?<\/style>/gi, '') // Remove styles
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.replace(/<br\s*\/?>/gi, '\n') // Convert br to newlines
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.replace(/<[^>]+>/g, ' ') // Remove all HTML tags
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.replace(/ /g, ' ')
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.replace(/&/g, '&')
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.replace(/</g, '<')
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.replace(/>/g, '>')
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.replace(/"/g, '"')
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.replace(/'/g, "'")
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.replace(/\s+/g, ' ') // Normalize whitespace
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.trim();
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console.log('[DXpeditions] Cleaned text length:', text.length);
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console.log('[DXpeditions] First 500 chars:', text.substring(0, 500));
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const dxpeditions = [];
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// Each entry starts with a date pattern like "Jan 1-Feb 16, 2026 DXCC:"
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// Split on date patterns that are followed by DXCC
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const entryPattern = /((?:Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\s+\d{1,2}[^D]*?DXCC:[^·]+?)(?=(?:Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\s+\d{1,2}|$)/gi;
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const entries = text.match(entryPattern) || [];
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console.log('[DXpeditions] Found', entries.length, 'potential entries');
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// Log first 3 entries for debugging
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entries.slice(0, 3).forEach((e, i) => {
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console.log(`[DXpeditions] Entry ${i}:`, e.substring(0, 150));
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});
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for (const entry of entries) {
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if (!entry.trim()) continue;
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// Skip header/footer/legend content
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if (entry.includes('ADXB=') || entry.includes('OPDX=') || entry.includes('425DX=') ||
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entry.includes('Last updated') || entry.includes('Copyright') ||
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entry.includes('Expired Announcements') || entry.includes('Table Version') ||
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entry.includes('About ADXO') || entry.includes('Search ADXO') ||
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entry.includes('GazDX=') || entry.includes('LNDX=') || entry.includes('TDDX=') ||
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entry.includes('DXW.Net=') || entry.includes('DXMB=')) continue;
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// Try multiple parsing strategies
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let callsign = null;
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let entity = null;
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let qsl = null;
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let info = null;
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let dateStr = null;
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// Strategy 1: "DXCC: xxx Callsign: xxx" format
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const dxccMatch = entry.match(/DXCC:\s*([^C\n]+?)(?=Callsign:|QSL:|Source:|Info:|$)/i);
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const callMatch = entry.match(/Callsign:\s*([A-Z0-9\/]+)/i);
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if (callMatch && dxccMatch) {
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callsign = callMatch[1].trim().toUpperCase();
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entity = dxccMatch[1].trim();
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}
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// Strategy 2: Look for callsign patterns directly (like "3Y0K" or "VP8/G3ABC")
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if (!callsign) {
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const directCallMatch = entry.match(/\b([A-Z]{1,2}\d[A-Z0-9]*[A-Z](?:\/[A-Z0-9]+)?)\b/);
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if (directCallMatch) {
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callsign = directCallMatch[1];
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}
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}
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// Strategy 3: Parse "Entity - Callsign" or similar patterns
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if (!callsign) {
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const altMatch = entry.match(/([A-Za-z\s&]+?)\s*[-–:]\s*([A-Z]{1,2}\d[A-Z0-9]*)/);
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if (altMatch) {
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entity = altMatch[1].trim();
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callsign = altMatch[2].trim();
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}
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}
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// Extract other fields
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const qslMatch = entry.match(/QSL:\s*([A-Za-z0-9]+)/i);
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const infoMatch = entry.match(/Info:\s*(.+)/i);
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// Date is at the start of entry: "Jan 1-Feb 16, 2026"
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const dateMatch = entry.match(/^([A-Za-z]{3}\s+\d{1,2}[^D]*?)(?=DXCC:)/i);
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qsl = qslMatch ? qslMatch[1].trim() : '';
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info = infoMatch ? infoMatch[1].trim() : '';
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dateStr = dateMatch ? dateMatch[1].trim() : '';
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// Skip if we couldn't find a callsign
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if (!callsign || callsign.length < 3) continue;
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// Skip obviously wrong matches
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if (/^(DXCC|QSL|INFO|SOURCE|THE|AND|FOR)$/i.test(callsign)) continue;
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// Log first few successful parses
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if (dxpeditions.length < 3) {
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console.log(`[DXpeditions] Parsed: ${callsign} - ${entity} - ${dateStr}`);
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}
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// Try to extract entity from context if not found
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if (!entity && info) {
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// Look for "from Entity" or "fm Entity" patterns
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const fromMatch = info.match(/(?:from|fm)\s+([A-Za-z\s]+?)(?:;|,|$)/i);
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if (fromMatch) entity = fromMatch[1].trim();
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}
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// Parse dates
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let startDate = null;
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let endDate = null;
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let isActive = false;
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let isUpcoming = false;
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if (dateStr) {
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const monthNames = ['jan', 'feb', 'mar', 'apr', 'may', 'jun', 'jul', 'aug', 'sep', 'oct', 'nov', 'dec'];
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const datePattern = /([A-Za-z]{3})\s+(\d{1,2})(?:,?\s*(\d{4}))?(?:\s*[-–]\s*([A-Za-z]{3})?\s*(\d{1,2})(?:,?\s*(\d{4}))?)?/i;
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const dateParsed = dateStr.match(datePattern);
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if (dateParsed) {
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const currentYear = new Date().getFullYear();
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const startMonth = monthNames.indexOf(dateParsed[1].toLowerCase());
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const startDay = parseInt(dateParsed[2]);
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const startYear = dateParsed[3] ? parseInt(dateParsed[3]) : currentYear;
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const endMonthStr = dateParsed[4] || dateParsed[1];
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const endMonth = monthNames.indexOf(endMonthStr.toLowerCase());
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const endDay = parseInt(dateParsed[5]) || startDay + 14;
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const endYear = dateParsed[6] ? parseInt(dateParsed[6]) : startYear;
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if (startMonth >= 0) {
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startDate = new Date(startYear, startMonth, startDay);
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endDate = new Date(endYear, endMonth >= 0 ? endMonth : startMonth, endDay);
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if (endDate < startDate && !dateParsed[6]) {
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endDate.setFullYear(endYear + 1);
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}
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const today = new Date();
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today.setHours(0, 0, 0, 0);
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isActive = startDate <= today && endDate >= today;
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isUpcoming = startDate > today;
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}
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}
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}
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// Extract bands and modes
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const bandsMatch = entry.match(/(\d+(?:-\d+)?m)/g);
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const bands = bandsMatch ? [...new Set(bandsMatch)].join(' ') : '';
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const modesMatch = entry.match(/\b(CW|SSB|FT8|FT4|RTTY|PSK|FM|AM|DIGI)\b/gi);
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const modes = modesMatch ? [...new Set(modesMatch.map(m => m.toUpperCase()))].join(' ') : '';
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dxpeditions.push({
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callsign,
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entity: entity || 'Unknown',
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dates: dateStr,
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qsl,
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info: (info || '').substring(0, 100),
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bands,
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modes,
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startDate: startDate?.toISOString(),
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endDate: endDate?.toISOString(),
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isActive,
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isUpcoming
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});
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}
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// Remove duplicates by callsign
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const seen = new Set();
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const uniqueDxpeditions = dxpeditions.filter(d => {
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if (seen.has(d.callsign)) return false;
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seen.add(d.callsign);
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return true;
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});
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// Sort: active first, then upcoming by start date
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uniqueDxpeditions.sort((a, b) => {
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if (a.isActive && !b.isActive) return -1;
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if (!a.isActive && b.isActive) return 1;
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if (a.isUpcoming && !b.isUpcoming) return -1;
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if (!a.isUpcoming && b.isUpcoming) return 1;
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if (a.startDate && b.startDate) return new Date(a.startDate) - new Date(b.startDate);
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return 0;
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});
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console.log('[DXpeditions] Parsed', uniqueDxpeditions.length, 'unique entries');
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if (uniqueDxpeditions.length > 0) {
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console.log('[DXpeditions] First entry:', JSON.stringify(uniqueDxpeditions[0]));
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}
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const result = {
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dxpeditions: uniqueDxpeditions.slice(0, 50),
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active: uniqueDxpeditions.filter(d => d.isActive).length,
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upcoming: uniqueDxpeditions.filter(d => d.isUpcoming).length,
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source: 'NG3K ADXO',
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timestamp: new Date().toISOString()
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};
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|
|
|
console.log('[DXpeditions] Result:', result.active, 'active,', result.upcoming, 'upcoming');
|
|
|
|
|
|
dxpeditionCache.data = result;
|
|
|
dxpeditionCache.timestamp = now;
|
|
|
|
|
|
res.json(result);
|
|
|
} catch (error) {
|
|
|
console.error('[DXpeditions] API error:', error.message);
|
|
|
|
|
|
if (dxpeditionCache.data) {
|
|
|
console.log('[DXpeditions] Returning stale cache');
|
|
|
return res.json({ ...dxpeditionCache.data, stale: true });
|
|
|
}
|
|
|
|
|
|
res.status(500).json({ error: 'Failed to fetch DXpedition data' });
|
|
|
}
|
|
|
});
|
|
|
|
|
|
// NOAA Space Weather - X-Ray Flux
|
|
|
app.get('/api/noaa/xray', async (req, res) => {
|
|
|
try {
|
|
|
const response = await fetch('https://services.swpc.noaa.gov/json/goes/primary/xrays-7-day.json');
|
|
|
const data = await response.json();
|
|
|
res.json(data);
|
|
|
} catch (error) {
|
|
|
console.error('NOAA X-Ray API error:', error.message);
|
|
|
res.status(500).json({ error: 'Failed to fetch X-ray data' });
|
|
|
}
|
|
|
});
|
|
|
|
|
|
// POTA Spots
|
|
|
app.get('/api/pota/spots', async (req, res) => {
|
|
|
try {
|
|
|
const response = await fetch('https://api.pota.app/spot/activator');
|
|
|
const data = await response.json();
|
|
|
res.json(data);
|
|
|
} catch (error) {
|
|
|
console.error('POTA API error:', error.message);
|
|
|
res.status(500).json({ error: 'Failed to fetch POTA spots' });
|
|
|
}
|
|
|
});
|
|
|
|
|
|
// SOTA Spots
|
|
|
app.get('/api/sota/spots', async (req, res) => {
|
|
|
try {
|
|
|
const response = await fetch('https://api2.sota.org.uk/api/spots/50/all');
|
|
|
const data = await response.json();
|
|
|
res.json(data);
|
|
|
} catch (error) {
|
|
|
console.error('SOTA API error:', error.message);
|
|
|
res.status(500).json({ error: 'Failed to fetch SOTA spots' });
|
|
|
}
|
|
|
});
|
|
|
|
|
|
// HamQSL Band Conditions
|
|
|
app.get('/api/hamqsl/conditions', async (req, res) => {
|
|
|
try {
|
|
|
const response = await fetch('https://www.hamqsl.com/solarxml.php');
|
|
|
const text = await response.text();
|
|
|
res.set('Content-Type', 'application/xml');
|
|
|
res.send(text);
|
|
|
} catch (error) {
|
|
|
console.error('HamQSL API error:', error.message);
|
|
|
res.status(500).json({ error: 'Failed to fetch band conditions' });
|
|
|
}
|
|
|
});
|
|
|
|
|
|
// DX Cluster proxy - fetches from selectable sources
|
|
|
// Query param: ?source=hamqth|dxspider|proxy|auto (default: auto)
|
|
|
// Note: DX Spider uses telnet - works locally but may be blocked on cloud hosting
|
|
|
// The 'proxy' source uses our DX Spider Proxy microservice
|
|
|
|
|
|
// DX Spider Proxy URL (sibling service on Railway or external)
|
|
|
const DXSPIDER_PROXY_URL = process.env.DXSPIDER_PROXY_URL || 'https://dxspider-proxy-production-1ec7.up.railway.app';
|
|
|
|
|
|
// Cache for DX Spider telnet spots (to avoid excessive connections)
|
|
|
let dxSpiderCache = { spots: [], timestamp: 0 };
|
|
|
const DXSPIDER_CACHE_TTL = 60000; // 60 seconds cache
|
|
|
|
|
|
app.get('/api/dxcluster/spots', async (req, res) => {
|
|
|
const source = (req.query.source || 'auto').toLowerCase();
|
|
|
|
|
|
// Helper function for HamQTH (HTTP-based, works everywhere)
|
|
|
async function fetchHamQTH() {
|
|
|
const controller = new AbortController();
|
|
|
const timeout = setTimeout(() => controller.abort(), 10000);
|
|
|
|
|
|
try {
|
|
|
const response = await fetch('https://www.hamqth.com/dxc_csv.php?limit=25', {
|
|
|
headers: { 'User-Agent': 'OpenHamClock/3.5' },
|
|
|
signal: controller.signal
|
|
|
});
|
|
|
clearTimeout(timeout);
|
|
|
|
|
|
if (response.ok) {
|
|
|
const text = await response.text();
|
|
|
// HamQTH CSV format: Spotter^Frequency^DXCall^Comment^TimeDate^^^Continent^Band^Country^DXCC
|
|
|
// Example: KF0NYM^18070.0^TX5U^Correction, Good Sig MO, 73^2149 2025-05-27^^^EU^17M^France^227
|
|
|
const lines = text.trim().split('\n').filter(line => line.includes('^'));
|
|
|
|
|
|
if (lines.length > 0) {
|
|
|
const spots = lines.slice(0, 25).map(line => {
|
|
|
const parts = line.split('^');
|
|
|
const spotter = parts[0] || '';
|
|
|
const freqKhz = parseFloat(parts[1]) || 0;
|
|
|
const dxCall = parts[2] || 'UNKNOWN';
|
|
|
const comment = parts[3] || '';
|
|
|
const timeDate = parts[4] || '';
|
|
|
|
|
|
// Frequency: convert from kHz to MHz
|
|
|
const freqMhz = freqKhz > 1000 ? (freqKhz / 1000).toFixed(3) : String(freqKhz);
|
|
|
|
|
|
// Time: extract HHMM from "2149 2025-05-27" format
|
|
|
let time = '';
|
|
|
if (timeDate && timeDate.length >= 4) {
|
|
|
const timeStr = timeDate.substring(0, 4);
|
|
|
time = timeStr.substring(0, 2) + ':' + timeStr.substring(2, 4) + 'z';
|
|
|
}
|
|
|
|
|
|
return {
|
|
|
freq: freqMhz,
|
|
|
call: dxCall,
|
|
|
comment: comment,
|
|
|
time: time,
|
|
|
spotter: spotter,
|
|
|
source: 'HamQTH'
|
|
|
};
|
|
|
});
|
|
|
console.log('[DX Cluster] HamQTH:', spots.length, 'spots');
|
|
|
return spots;
|
|
|
}
|
|
|
}
|
|
|
} catch (error) {
|
|
|
clearTimeout(timeout);
|
|
|
if (error.name !== 'AbortError') {
|
|
|
console.error('[DX Cluster] HamQTH error:', error.message);
|
|
|
}
|
|
|
}
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
// Helper function for DX Spider Proxy (our microservice)
|
|
|
async function fetchDXSpiderProxy() {
|
|
|
const controller = new AbortController();
|
|
|
const timeout = setTimeout(() => controller.abort(), 10000);
|
|
|
|
|
|
try {
|
|
|
const response = await fetch(`${DXSPIDER_PROXY_URL}/api/dxcluster/spots?limit=50`, {
|
|
|
headers: { 'User-Agent': 'OpenHamClock/3.5' },
|
|
|
signal: controller.signal
|
|
|
});
|
|
|
clearTimeout(timeout);
|
|
|
|
|
|
if (response.ok) {
|
|
|
const spots = await response.json();
|
|
|
if (Array.isArray(spots) && spots.length > 0) {
|
|
|
console.log('[DX Cluster] DX Spider Proxy:', spots.length, 'spots');
|
|
|
return spots;
|
|
|
}
|
|
|
}
|
|
|
} catch (error) {
|
|
|
clearTimeout(timeout);
|
|
|
if (error.name !== 'AbortError') {
|
|
|
console.error('[DX Cluster] DX Spider Proxy error:', error.message);
|
|
|
}
|
|
|
}
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
// Helper function for DX Spider (telnet-based, works locally/Pi)
|
|
|
async function fetchDXSpider() {
|
|
|
// Check cache first
|
|
|
if (Date.now() - dxSpiderCache.timestamp < DXSPIDER_CACHE_TTL && dxSpiderCache.spots.length > 0) {
|
|
|
console.log('[DX Cluster] DX Spider: returning', dxSpiderCache.spots.length, 'cached spots');
|
|
|
return dxSpiderCache.spots;
|
|
|
}
|
|
|
|
|
|
return new Promise((resolve) => {
|
|
|
const spots = [];
|
|
|
let buffer = '';
|
|
|
let loginSent = false;
|
|
|
let commandSent = false;
|
|
|
|
|
|
const client = new net.Socket();
|
|
|
client.setTimeout(15000);
|
|
|
|
|
|
// Try connecting to DX Spider node
|
|
|
client.connect(7300, 'dxspider.co.uk', () => {
|
|
|
console.log('[DX Cluster] DX Spider: connected to dxspider.co.uk:7300');
|
|
|
});
|
|
|
|
|
|
client.on('data', (data) => {
|
|
|
buffer += data.toString();
|
|
|
|
|
|
// Wait for login prompt
|
|
|
if (!loginSent && (buffer.includes('login:') || buffer.includes('Please enter your call') || buffer.includes('enter your callsign'))) {
|
|
|
loginSent = true;
|
|
|
client.write('GUEST\r\n');
|
|
|
console.log('[DX Cluster] DX Spider: sent login');
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
// Wait for prompt after login, then send command
|
|
|
if (loginSent && !commandSent && (buffer.includes('Hello') || buffer.includes('de ') || buffer.includes('>') || buffer.includes('GUEST'))) {
|
|
|
commandSent = true;
|
|
|
setTimeout(() => {
|
|
|
client.write('sh/dx 25\r\n');
|
|
|
console.log('[DX Cluster] DX Spider: sent sh/dx 25');
|
|
|
}, 1000);
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
// Parse DX spots from the output
|
|
|
// Format: DX de W3LPL: 14195.0 TI5/AA8HH FT8 -09 dB 1234Z
|
|
|
const lines = buffer.split('\n');
|
|
|
for (const line of lines) {
|
|
|
if (line.includes('DX de ')) {
|
|
|
const match = line.match(/DX de ([A-Z0-9\/\-]+):\s+(\d+\.?\d*)\s+([A-Z0-9\/\-]+)\s+(.+?)\s+(\d{4})Z/i);
|
|
|
if (match) {
|
|
|
const spotter = match[1].replace(':', '');
|
|
|
const freqKhz = parseFloat(match[2]);
|
|
|
const dxCall = match[3];
|
|
|
const comment = match[4].trim();
|
|
|
const timeStr = match[5];
|
|
|
|
|
|
if (!isNaN(freqKhz) && freqKhz > 0 && dxCall) {
|
|
|
const freqMhz = (freqKhz / 1000).toFixed(3);
|
|
|
const time = timeStr.substring(0, 2) + ':' + timeStr.substring(2, 4) + 'z';
|
|
|
|
|
|
// Avoid duplicates
|
|
|
if (!spots.find(s => s.call === dxCall && s.freq === freqMhz)) {
|
|
|
spots.push({
|
|
|
freq: freqMhz,
|
|
|
call: dxCall,
|
|
|
comment: comment,
|
|
|
time: time,
|
|
|
spotter: spotter,
|
|
|
source: 'DX Spider'
|
|
|
});
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// If we have enough spots, close connection
|
|
|
if (spots.length >= 20) {
|
|
|
client.write('bye\r\n');
|
|
|
setTimeout(() => client.destroy(), 500);
|
|
|
}
|
|
|
});
|
|
|
|
|
|
client.on('timeout', () => {
|
|
|
console.log('[DX Cluster] DX Spider: timeout');
|
|
|
client.destroy();
|
|
|
});
|
|
|
|
|
|
client.on('error', (err) => {
|
|
|
console.error('[DX Cluster] DX Spider error:', err.message);
|
|
|
client.destroy();
|
|
|
});
|
|
|
|
|
|
client.on('close', () => {
|
|
|
if (spots.length > 0) {
|
|
|
console.log('[DX Cluster] DX Spider:', spots.length, 'spots');
|
|
|
dxSpiderCache = { spots: spots, timestamp: Date.now() };
|
|
|
resolve(spots);
|
|
|
} else {
|
|
|
console.log('[DX Cluster] DX Spider: no spots received');
|
|
|
resolve(null);
|
|
|
}
|
|
|
});
|
|
|
|
|
|
// Fallback timeout - close after 20 seconds regardless
|
|
|
setTimeout(() => {
|
|
|
if (spots.length > 0) {
|
|
|
client.destroy();
|
|
|
} else if (client.readable) {
|
|
|
client.destroy();
|
|
|
resolve(null);
|
|
|
}
|
|
|
}, 20000);
|
|
|
});
|
|
|
}
|
|
|
|
|
|
// Fetch based on selected source
|
|
|
let spots = null;
|
|
|
|
|
|
if (source === 'hamqth') {
|
|
|
spots = await fetchHamQTH();
|
|
|
} else if (source === 'proxy') {
|
|
|
spots = await fetchDXSpiderProxy();
|
|
|
// Fallback to HamQTH if proxy fails
|
|
|
if (!spots) {
|
|
|
console.log('[DX Cluster] Proxy failed, falling back to HamQTH');
|
|
|
spots = await fetchHamQTH();
|
|
|
}
|
|
|
} else if (source === 'dxspider') {
|
|
|
spots = await fetchDXSpider();
|
|
|
// Fallback to HamQTH if DX Spider fails
|
|
|
if (!spots) {
|
|
|
console.log('[DX Cluster] DX Spider failed, falling back to HamQTH');
|
|
|
spots = await fetchHamQTH();
|
|
|
}
|
|
|
} else {
|
|
|
// Auto mode - try Proxy first (best for Railway), then HamQTH, then DX Spider
|
|
|
spots = await fetchDXSpiderProxy();
|
|
|
if (!spots) {
|
|
|
spots = await fetchHamQTH();
|
|
|
}
|
|
|
if (!spots) {
|
|
|
spots = await fetchDXSpider();
|
|
|
}
|
|
|
}
|
|
|
|
|
|
res.json(spots || []);
|
|
|
});
|
|
|
|
|
|
// Get available DX cluster sources
|
|
|
app.get('/api/dxcluster/sources', (req, res) => {
|
|
|
res.json([
|
|
|
{ id: 'auto', name: 'Auto (Best Available)', description: 'Tries Proxy first, then HamQTH, then direct telnet' },
|
|
|
{ id: 'proxy', name: 'DX Spider Proxy ⭐', description: 'Our dedicated proxy service - real-time telnet feed via HTTP' },
|
|
|
{ id: 'hamqth', name: 'HamQTH', description: 'HamQTH.com CSV feed (HTTP, works everywhere)' },
|
|
|
{ id: 'dxspider', name: 'DX Spider Direct', description: 'Direct telnet to dxspider.co.uk:7300 (works locally/Pi only)' }
|
|
|
]);
|
|
|
});
|
|
|
|
|
|
// ============================================
|
|
|
// DX SPOT PATHS API - Get spots with locations for map visualization
|
|
|
// Returns spots from the last 5 minutes with spotter and DX locations
|
|
|
// ============================================
|
|
|
|
|
|
// Cache for DX spot paths to avoid excessive lookups
|
|
|
let dxSpotPathsCache = { paths: [], allPaths: [], timestamp: 0 };
|
|
|
const DXPATHS_CACHE_TTL = 5000; // 5 seconds cache between fetches
|
|
|
const DXPATHS_RETENTION = 30 * 60 * 1000; // 30 minute spot retention
|
|
|
|
|
|
app.get('/api/dxcluster/paths', async (req, res) => {
|
|
|
// Check cache first
|
|
|
if (Date.now() - dxSpotPathsCache.timestamp < DXPATHS_CACHE_TTL && dxSpotPathsCache.paths.length > 0) {
|
|
|
console.log('[DX Paths] Returning', dxSpotPathsCache.paths.length, 'cached paths');
|
|
|
return res.json(dxSpotPathsCache.paths);
|
|
|
}
|
|
|
|
|
|
try {
|
|
|
const controller = new AbortController();
|
|
|
const timeout = setTimeout(() => controller.abort(), 10000);
|
|
|
const now = Date.now();
|
|
|
|
|
|
// Try proxy first for better real-time data
|
|
|
let newSpots = [];
|
|
|
let usedSource = 'none';
|
|
|
|
|
|
try {
|
|
|
const proxyResponse = await fetch(`${DXSPIDER_PROXY_URL}/api/spots?limit=100`, {
|
|
|
headers: { 'User-Agent': 'OpenHamClock/3.7' },
|
|
|
signal: controller.signal
|
|
|
});
|
|
|
|
|
|
if (proxyResponse.ok) {
|
|
|
const proxyData = await proxyResponse.json();
|
|
|
if (proxyData.spots && proxyData.spots.length > 0) {
|
|
|
usedSource = 'proxy';
|
|
|
newSpots = proxyData.spots.map(s => ({
|
|
|
spotter: s.spotter,
|
|
|
spotterGrid: s.spotterGrid || null,
|
|
|
dxCall: s.call,
|
|
|
dxGrid: s.dxGrid || null,
|
|
|
freq: s.freq,
|
|
|
comment: s.comment || '',
|
|
|
time: s.time || '',
|
|
|
id: `${s.call}-${s.freqKhz || s.freq}-${s.spotter}`
|
|
|
}));
|
|
|
console.log('[DX Paths] Got', newSpots.length, 'spots from proxy');
|
|
|
}
|
|
|
}
|
|
|
} catch (proxyErr) {
|
|
|
console.log('[DX Paths] Proxy failed, trying HamQTH');
|
|
|
}
|
|
|
|
|
|
// Fallback to HamQTH if proxy failed
|
|
|
if (newSpots.length === 0) {
|
|
|
try {
|
|
|
const response = await fetch('https://www.hamqth.com/dxc_csv.php?limit=50', {
|
|
|
headers: { 'User-Agent': 'OpenHamClock/3.7' },
|
|
|
signal: controller.signal
|
|
|
});
|
|
|
|
|
|
if (response.ok) {
|
|
|
const text = await response.text();
|
|
|
const lines = text.trim().split('\n').filter(line => line.includes('^'));
|
|
|
usedSource = 'hamqth';
|
|
|
|
|
|
for (const line of lines) {
|
|
|
const parts = line.split('^');
|
|
|
if (parts.length < 5) continue;
|
|
|
|
|
|
const spotter = parts[0]?.trim().toUpperCase();
|
|
|
const freqKhz = parseFloat(parts[1]) || 0;
|
|
|
const dxCall = parts[2]?.trim().toUpperCase();
|
|
|
const comment = parts[3]?.trim() || '';
|
|
|
const timeDate = parts[4]?.trim() || '';
|
|
|
|
|
|
if (!spotter || !dxCall || freqKhz <= 0) continue;
|
|
|
|
|
|
// Extract grids from comment for HamQTH data too
|
|
|
const grids = extractGridsFromComment(comment);
|
|
|
|
|
|
newSpots.push({
|
|
|
spotter,
|
|
|
spotterGrid: grids.spotterGrid,
|
|
|
dxCall,
|
|
|
dxGrid: grids.dxGrid,
|
|
|
freq: (freqKhz / 1000).toFixed(3),
|
|
|
comment,
|
|
|
time: timeDate.length >= 4 ? timeDate.substring(0, 2) + ':' + timeDate.substring(2, 4) + 'z' : '',
|
|
|
id: `${dxCall}-${freqKhz}-${spotter}`
|
|
|
});
|
|
|
}
|
|
|
console.log('[DX Paths] Got', newSpots.length, 'spots from HamQTH');
|
|
|
}
|
|
|
} catch (hamqthErr) {
|
|
|
console.log('[DX Paths] HamQTH also failed');
|
|
|
}
|
|
|
}
|
|
|
|
|
|
clearTimeout(timeout);
|
|
|
|
|
|
if (newSpots.length === 0) {
|
|
|
// Return existing paths if fetch failed
|
|
|
const validPaths = dxSpotPathsCache.allPaths.filter(p => (now - p.timestamp) < DXPATHS_RETENTION);
|
|
|
return res.json(validPaths.slice(0, 50));
|
|
|
}
|
|
|
|
|
|
// Get unique callsigns to look up
|
|
|
const allCalls = new Set();
|
|
|
newSpots.forEach(s => {
|
|
|
allCalls.add(s.spotter);
|
|
|
allCalls.add(s.dxCall);
|
|
|
});
|
|
|
|
|
|
// Look up prefix-based locations for all callsigns (includes grid squares!)
|
|
|
const prefixLocations = {};
|
|
|
const callsToLookup = [...allCalls].slice(0, 100);
|
|
|
|
|
|
for (const call of callsToLookup) {
|
|
|
const loc = estimateLocationFromPrefix(call);
|
|
|
if (loc) {
|
|
|
prefixLocations[call] = {
|
|
|
lat: loc.lat,
|
|
|
lon: loc.lon,
|
|
|
country: loc.country,
|
|
|
grid: loc.grid || null, // Include grid from prefix mapping!
|
|
|
source: loc.grid ? 'prefix-grid' : 'prefix'
|
|
|
};
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Build new paths with locations - try grid first, fall back to prefix
|
|
|
const newPaths = newSpots
|
|
|
.map(spot => {
|
|
|
// DX station location - try grid from spot data first, then comment, then prefix
|
|
|
let dxLoc = null;
|
|
|
let dxGridSquare = null;
|
|
|
|
|
|
// Check if spot already has dxGrid from proxy
|
|
|
if (spot.dxGrid) {
|
|
|
const gridLoc = maidenheadToLatLon(spot.dxGrid);
|
|
|
if (gridLoc) {
|
|
|
dxLoc = { lat: gridLoc.lat, lon: gridLoc.lon, country: '', source: 'grid' };
|
|
|
dxGridSquare = spot.dxGrid;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// If no grid yet, try extracting from comment
|
|
|
if (!dxLoc && spot.comment) {
|
|
|
const extractedGrids = extractGridsFromComment(spot.comment);
|
|
|
if (extractedGrids.dxGrid) {
|
|
|
const gridLoc = maidenheadToLatLon(extractedGrids.dxGrid);
|
|
|
if (gridLoc) {
|
|
|
dxLoc = { lat: gridLoc.lat, lon: gridLoc.lon, country: '', source: 'grid' };
|
|
|
dxGridSquare = extractedGrids.dxGrid;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Fall back to prefix location (now includes grid-based coordinates!)
|
|
|
if (!dxLoc) {
|
|
|
dxLoc = prefixLocations[spot.dxCall];
|
|
|
if (dxLoc && dxLoc.grid) {
|
|
|
dxGridSquare = dxLoc.grid;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Spotter location - try grid first, then prefix
|
|
|
let spotterLoc = null;
|
|
|
let spotterGridSquare = null;
|
|
|
|
|
|
// Check if spot already has spotterGrid from proxy
|
|
|
if (spot.spotterGrid) {
|
|
|
const gridLoc = maidenheadToLatLon(spot.spotterGrid);
|
|
|
if (gridLoc) {
|
|
|
spotterLoc = { lat: gridLoc.lat, lon: gridLoc.lon, country: '', source: 'grid' };
|
|
|
spotterGridSquare = spot.spotterGrid;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// If no grid yet, try extracting from comment (in case of dual grid format)
|
|
|
if (!spotterLoc && spot.comment) {
|
|
|
const extractedGrids = extractGridsFromComment(spot.comment);
|
|
|
if (extractedGrids.spotterGrid) {
|
|
|
const gridLoc = maidenheadToLatLon(extractedGrids.spotterGrid);
|
|
|
if (gridLoc) {
|
|
|
spotterLoc = { lat: gridLoc.lat, lon: gridLoc.lon, country: '', source: 'grid' };
|
|
|
spotterGridSquare = extractedGrids.spotterGrid;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Fall back to prefix location for spotter (now includes grid-based coordinates!)
|
|
|
if (!spotterLoc) {
|
|
|
spotterLoc = prefixLocations[spot.spotter];
|
|
|
if (spotterLoc && spotterLoc.grid) {
|
|
|
spotterGridSquare = spotterLoc.grid;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (spotterLoc && dxLoc) {
|
|
|
return {
|
|
|
spotter: spot.spotter,
|
|
|
spotterLat: spotterLoc.lat,
|
|
|
spotterLon: spotterLoc.lon,
|
|
|
spotterCountry: spotterLoc.country || '',
|
|
|
spotterGrid: spotterGridSquare,
|
|
|
spotterLocSource: spotterLoc.source,
|
|
|
dxCall: spot.dxCall,
|
|
|
dxLat: dxLoc.lat,
|
|
|
dxLon: dxLoc.lon,
|
|
|
dxCountry: dxLoc.country || '',
|
|
|
dxGrid: dxGridSquare,
|
|
|
dxLocSource: dxLoc.source,
|
|
|
freq: spot.freq,
|
|
|
comment: spot.comment,
|
|
|
time: spot.time,
|
|
|
id: spot.id,
|
|
|
timestamp: now
|
|
|
};
|
|
|
}
|
|
|
return null;
|
|
|
})
|
|
|
.filter(p => p !== null);
|
|
|
|
|
|
// Merge with existing paths, removing expired and duplicates
|
|
|
const existingValidPaths = dxSpotPathsCache.allPaths.filter(p =>
|
|
|
(now - p.timestamp) < DXPATHS_RETENTION
|
|
|
);
|
|
|
|
|
|
// Add new paths, avoiding duplicates (same dxCall+freq within 2 minutes)
|
|
|
const mergedPaths = [...existingValidPaths];
|
|
|
for (const newPath of newPaths) {
|
|
|
const isDuplicate = mergedPaths.some(existing =>
|
|
|
existing.dxCall === newPath.dxCall &&
|
|
|
existing.freq === newPath.freq &&
|
|
|
(now - existing.timestamp) < 120000 // 2 minute dedup window
|
|
|
);
|
|
|
if (!isDuplicate) {
|
|
|
mergedPaths.push(newPath);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Sort by timestamp (newest first) and limit
|
|
|
const sortedPaths = mergedPaths.sort((a, b) => b.timestamp - a.timestamp).slice(0, 100);
|
|
|
|
|
|
console.log('[DX Paths]', sortedPaths.length, 'total paths (', newPaths.length, 'new from', newSpots.length, 'spots)');
|
|
|
|
|
|
// Update cache
|
|
|
dxSpotPathsCache = {
|
|
|
paths: sortedPaths.slice(0, 50), // Return 50 for display
|
|
|
allPaths: sortedPaths, // Keep all for accumulation
|
|
|
timestamp: now
|
|
|
};
|
|
|
|
|
|
res.json(dxSpotPathsCache.paths);
|
|
|
} catch (error) {
|
|
|
console.error('[DX Paths] Error:', error.message);
|
|
|
// Return cached data on error
|
|
|
res.json(dxSpotPathsCache.paths || []);
|
|
|
}
|
|
|
});
|
|
|
|
|
|
// ============================================
|
|
|
// CALLSIGN LOOKUP API (for getting location from callsign)
|
|
|
// ============================================
|
|
|
|
|
|
// Simple callsign to grid/location lookup using HamQTH
|
|
|
app.get('/api/callsign/:call', async (req, res) => {
|
|
|
const callsign = req.params.call.toUpperCase();
|
|
|
console.log('[Callsign Lookup] Looking up:', callsign);
|
|
|
|
|
|
try {
|
|
|
// Try HamQTH XML API (no auth needed for basic lookup)
|
|
|
const response = await fetch(`https://www.hamqth.com/dxcc.php?callsign=${callsign}`);
|
|
|
if (response.ok) {
|
|
|
const text = await response.text();
|
|
|
|
|
|
// Parse basic info from response
|
|
|
const latMatch = text.match(/<lat>([^<]+)<\/lat>/);
|
|
|
const lonMatch = text.match(/<lng>([^<]+)<\/lng>/);
|
|
|
const countryMatch = text.match(/<name>([^<]+)<\/name>/);
|
|
|
const cqMatch = text.match(/<cq>([^<]+)<\/cq>/);
|
|
|
const ituMatch = text.match(/<itu>([^<]+)<\/itu>/);
|
|
|
|
|
|
if (latMatch && lonMatch) {
|
|
|
const result = {
|
|
|
callsign,
|
|
|
lat: parseFloat(latMatch[1]),
|
|
|
lon: parseFloat(lonMatch[1]),
|
|
|
country: countryMatch ? countryMatch[1] : 'Unknown',
|
|
|
cqZone: cqMatch ? cqMatch[1] : '',
|
|
|
ituZone: ituMatch ? ituMatch[1] : ''
|
|
|
};
|
|
|
console.log('[Callsign Lookup] Found:', result);
|
|
|
return res.json(result);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Fallback: estimate location from callsign prefix
|
|
|
const estimated = estimateLocationFromPrefix(callsign);
|
|
|
if (estimated) {
|
|
|
console.log('[Callsign Lookup] Estimated from prefix:', estimated);
|
|
|
return res.json(estimated);
|
|
|
}
|
|
|
|
|
|
res.status(404).json({ error: 'Callsign not found' });
|
|
|
} catch (error) {
|
|
|
console.error('[Callsign Lookup] Error:', error.message);
|
|
|
res.status(500).json({ error: 'Lookup failed' });
|
|
|
}
|
|
|
});
|
|
|
|
|
|
// Convert Maidenhead grid locator to lat/lon (center of grid square)
|
|
|
function maidenheadToLatLon(grid) {
|
|
|
if (!grid || typeof grid !== 'string') return null;
|
|
|
|
|
|
grid = grid.toUpperCase().trim();
|
|
|
|
|
|
// Validate grid format (2, 4, 6, or 8 characters)
|
|
|
if (!/^[A-R]{2}([0-9]{2}([A-X]{2}([0-9]{2})?)?)?$/.test(grid)) return null;
|
|
|
|
|
|
let lon = -180;
|
|
|
let lat = -90;
|
|
|
|
|
|
// Field (2 chars): 20° lon x 10° lat
|
|
|
lon += (grid.charCodeAt(0) - 65) * 20;
|
|
|
lat += (grid.charCodeAt(1) - 65) * 10;
|
|
|
|
|
|
if (grid.length >= 4) {
|
|
|
// Square (2 digits): 2° lon x 1° lat
|
|
|
lon += parseInt(grid[2]) * 2;
|
|
|
lat += parseInt(grid[3]) * 1;
|
|
|
}
|
|
|
|
|
|
if (grid.length >= 6) {
|
|
|
// Subsquare (2 chars): 5' lon x 2.5' lat
|
|
|
lon += (grid.charCodeAt(4) - 65) * (5 / 60);
|
|
|
lat += (grid.charCodeAt(5) - 65) * (2.5 / 60);
|
|
|
}
|
|
|
|
|
|
if (grid.length >= 8) {
|
|
|
// Extended square (2 digits): 0.5' lon x 0.25' lat
|
|
|
lon += parseInt(grid[6]) * (0.5 / 60);
|
|
|
lat += parseInt(grid[7]) * (0.25 / 60);
|
|
|
}
|
|
|
|
|
|
// Add offset to center of the grid square
|
|
|
if (grid.length === 2) {
|
|
|
lon += 10; lat += 5;
|
|
|
} else if (grid.length === 4) {
|
|
|
lon += 1; lat += 0.5;
|
|
|
} else if (grid.length === 6) {
|
|
|
lon += 2.5 / 60; lat += 1.25 / 60;
|
|
|
} else if (grid.length === 8) {
|
|
|
lon += 0.25 / 60; lat += 0.125 / 60;
|
|
|
}
|
|
|
|
|
|
return { lat, lon, grid };
|
|
|
}
|
|
|
|
|
|
// Try to extract grid locators from a comment string
|
|
|
// Returns { spotterGrid, dxGrid } - may have one, both, or neither
|
|
|
function extractGridsFromComment(comment) {
|
|
|
if (!comment || typeof comment !== 'string') return { spotterGrid: null, dxGrid: null };
|
|
|
|
|
|
// Check for dual grid format: FN20<>EM79 or FN20->EM79 or FN20/EM79
|
|
|
const dualGridMatch = comment.match(/\b([A-Ra-r]{2}[0-9]{2}(?:[A-Xa-x]{2})?)\s*(?:<>|->|\/|<)\s*([A-Ra-r]{2}[0-9]{2}(?:[A-Xa-x]{2})?)\b/);
|
|
|
if (dualGridMatch) {
|
|
|
const grid1 = dualGridMatch[1].toUpperCase();
|
|
|
const grid2 = dualGridMatch[2].toUpperCase();
|
|
|
// Validate both are real grids
|
|
|
if (isValidGrid(grid1) && isValidGrid(grid2)) {
|
|
|
return { spotterGrid: grid1, dxGrid: grid2 };
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Look for all grids in the comment
|
|
|
const gridPattern = /\b([A-Ra-r]{2}[0-9]{2}(?:[A-Xa-x]{2})?)\b/g;
|
|
|
const grids = [];
|
|
|
let match;
|
|
|
while ((match = gridPattern.exec(comment)) !== null) {
|
|
|
const grid = match[1].toUpperCase();
|
|
|
if (isValidGrid(grid)) {
|
|
|
grids.push(grid);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// If we found two grids, assume first is spotter, second is DX
|
|
|
if (grids.length >= 2) {
|
|
|
return { spotterGrid: grids[0], dxGrid: grids[1] };
|
|
|
}
|
|
|
|
|
|
// If we found one grid, assume it's the DX station
|
|
|
if (grids.length === 1) {
|
|
|
return { spotterGrid: null, dxGrid: grids[0] };
|
|
|
}
|
|
|
|
|
|
return { spotterGrid: null, dxGrid: null };
|
|
|
}
|
|
|
|
|
|
// Validate a grid square is realistic (not "CQ00", "DE12", etc)
|
|
|
function isValidGrid(grid) {
|
|
|
if (!grid || grid.length < 4) return false;
|
|
|
const firstChar = grid.charCodeAt(0);
|
|
|
const secondChar = grid.charCodeAt(1);
|
|
|
// First char should be A-R, second char should be A-R
|
|
|
return firstChar >= 65 && firstChar <= 82 && secondChar >= 65 && secondChar <= 82;
|
|
|
}
|
|
|
|
|
|
// Legacy single-grid extraction (kept for compatibility)
|
|
|
function extractGridFromComment(comment) {
|
|
|
const grids = extractGridsFromComment(comment);
|
|
|
return grids.dxGrid;
|
|
|
}
|
|
|
|
|
|
// Estimate location from callsign prefix using grid squares
|
|
|
// This gives much better precision than country centers
|
|
|
function estimateLocationFromPrefix(callsign) {
|
|
|
if (!callsign) return null;
|
|
|
|
|
|
// Comprehensive prefix to grid mapping
|
|
|
// Uses typical/central grid for each prefix area
|
|
|
const prefixGrids = {
|
|
|
// USA - by call district
|
|
|
'W1': 'FN41', 'K1': 'FN41', 'N1': 'FN41', 'AA1': 'FN41', // New England
|
|
|
'W2': 'FN20', 'K2': 'FN20', 'N2': 'FN20', 'AA2': 'FN20', // NY/NJ
|
|
|
'W3': 'FM19', 'K3': 'FM19', 'N3': 'FM19', 'AA3': 'FM19', // PA/MD/DE
|
|
|
'W4': 'EM73', 'K4': 'EM73', 'N4': 'EM73', 'AA4': 'EM73', // SE USA
|
|
|
'W5': 'EM12', 'K5': 'EM12', 'N5': 'EM12', 'AA5': 'EM12', // TX/OK/LA/AR/MS
|
|
|
'W6': 'CM97', 'K6': 'CM97', 'N6': 'CM97', 'AA6': 'CM97', // California
|
|
|
'W7': 'DN31', 'K7': 'DN31', 'N7': 'DN31', 'AA7': 'DN31', // Pacific NW/Mountain
|
|
|
'W8': 'EN81', 'K8': 'EN81', 'N8': 'EN81', 'AA8': 'EN81', // MI/OH/WV
|
|
|
'W9': 'EN52', 'K9': 'EN52', 'N9': 'EN52', 'AA9': 'EN52', // IL/IN/WI
|
|
|
'W0': 'EN31', 'K0': 'EN31', 'N0': 'EN31', 'AA0': 'EN31', // Central USA
|
|
|
// Generic USA (no district) - AA through AL are all US prefixes
|
|
|
'W': 'EM79', 'K': 'EM79', 'N': 'EM79',
|
|
|
'AA': 'EM79', 'AB': 'EM79', 'AC': 'EM79', 'AD': 'EM79', 'AE': 'EM79', 'AF': 'EM79',
|
|
|
'AG': 'EM79', 'AH': 'EM79', 'AI': 'EM79', 'AJ': 'EM79', 'AK': 'EM79', 'AL': 'EM79',
|
|
|
// US A-prefixes by call district
|
|
|
'AE0': 'EN31', 'AE1': 'FN41', 'AE2': 'FN20', 'AE3': 'FM19', 'AE4': 'EM73',
|
|
|
'AE5': 'EM12', 'AE6': 'CM97', 'AE7': 'DN31', 'AE8': 'EN81', 'AE9': 'EN52',
|
|
|
'AC0': 'EN31', 'AC1': 'FN41', 'AC2': 'FN20', 'AC3': 'FM19', 'AC4': 'EM73',
|
|
|
'AC5': 'EM12', 'AC6': 'CM97', 'AC7': 'DN31', 'AC8': 'EN81', 'AC9': 'EN52',
|
|
|
'AD0': 'EN31', 'AD1': 'FN41', 'AD2': 'FN20', 'AD3': 'FM19', 'AD4': 'EM73',
|
|
|
'AD5': 'EM12', 'AD6': 'CM97', 'AD7': 'DN31', 'AD8': 'EN81', 'AD9': 'EN52',
|
|
|
'AF0': 'EN31', 'AF1': 'FN41', 'AF2': 'FN20', 'AF3': 'FM19', 'AF4': 'EM73',
|
|
|
'AF5': 'EM12', 'AF6': 'CM97', 'AF7': 'DN31', 'AF8': 'EN81', 'AF9': 'EN52',
|
|
|
'AG0': 'EN31', 'AG1': 'FN41', 'AG2': 'FN20', 'AG3': 'FM19', 'AG4': 'EM73',
|
|
|
'AG5': 'EM12', 'AG6': 'CM97', 'AG7': 'DN31', 'AG8': 'EN81', 'AG9': 'EN52',
|
|
|
'AI0': 'EN31', 'AI1': 'FN41', 'AI2': 'FN20', 'AI3': 'FM19', 'AI4': 'EM73',
|
|
|
'AI5': 'EM12', 'AI6': 'CM97', 'AI7': 'DN31', 'AI8': 'EN81', 'AI9': 'EN52',
|
|
|
'AJ0': 'EN31', 'AJ1': 'FN41', 'AJ2': 'FN20', 'AJ3': 'FM19', 'AJ4': 'EM73',
|
|
|
'AJ5': 'EM12', 'AJ6': 'CM97', 'AJ7': 'DN31', 'AJ8': 'EN81', 'AJ9': 'EN52',
|
|
|
'AK0': 'EN31', 'AK1': 'FN41', 'AK2': 'FN20', 'AK3': 'FM19', 'AK4': 'EM73',
|
|
|
'AK5': 'EM12', 'AK6': 'CM97', 'AK7': 'DN31', 'AK8': 'EN81', 'AK9': 'EN52',
|
|
|
'AL0': 'EN31', 'AL1': 'FN41', 'AL2': 'FN20', 'AL3': 'FM19', 'AL4': 'EM73',
|
|
|
'AL5': 'EM12', 'AL6': 'CM97', 'AL7': 'BP51', 'AL8': 'EN81', 'AL9': 'EN52', // AL7 = Alaska
|
|
|
|
|
|
// Canada - by province
|
|
|
'VE1': 'FN74', 'VA1': 'FN74', // Maritime
|
|
|
'VE2': 'FN35', 'VA2': 'FN35', // Quebec
|
|
|
'VE3': 'FN03', 'VA3': 'FN03', // Ontario
|
|
|
'VE4': 'EN19', 'VA4': 'EN19', // Manitoba
|
|
|
'VE5': 'DO51', 'VA5': 'DO51', // Saskatchewan
|
|
|
'VE6': 'DO33', 'VA6': 'DO33', // Alberta
|
|
|
'VE7': 'CN89', 'VA7': 'CN89', // British Columbia
|
|
|
'VE8': 'DP31', 'VA8': 'DP31', // NWT
|
|
|
'VE9': 'FN65', 'VA9': 'FN65', // New Brunswick
|
|
|
'VY1': 'CP28', // Yukon
|
|
|
'VY2': 'FN86', // PEI
|
|
|
'VO1': 'GN37', 'VO2': 'GO17', // Newfoundland/Labrador
|
|
|
'VE': 'FN03', 'VA': 'FN03', // Generic Canada
|
|
|
|
|
|
// UK & Ireland
|
|
|
'G': 'IO91', 'M': 'IO91', '2E': 'IO91', 'GW': 'IO81', // England/Wales
|
|
|
'GM': 'IO85', 'MM': 'IO85', '2M': 'IO85', // Scotland
|
|
|
'GI': 'IO64', 'MI': 'IO64', '2I': 'IO64', // N. Ireland
|
|
|
'EI': 'IO63', 'EJ': 'IO63', // Ireland
|
|
|
|
|
|
// Germany
|
|
|
'DL': 'JO51', 'DJ': 'JO51', 'DK': 'JO51', 'DA': 'JO51', 'DB': 'JO51', 'DC': 'JO51', 'DD': 'JO51', 'DF': 'JO51', 'DG': 'JO51', 'DH': 'JO51', 'DO': 'JO51',
|
|
|
|
|
|
// Rest of Europe
|
|
|
'F': 'JN18', // France
|
|
|
'I': 'JN61', 'IK': 'JN45', 'IZ': 'JN61', // Italy
|
|
|
'EA': 'IN80', 'EC': 'IN80', 'EB': 'IN80', // Spain
|
|
|
'CT': 'IM58', // Portugal
|
|
|
'PA': 'JO21', 'PD': 'JO21', 'PE': 'JO21', 'PH': 'JO21', // Netherlands
|
|
|
'ON': 'JO20', 'OO': 'JO20', 'OR': 'JO20', 'OT': 'JO20', // Belgium
|
|
|
'HB': 'JN47', 'HB9': 'JN47', // Switzerland
|
|
|
'OE': 'JN78', // Austria
|
|
|
'OZ': 'JO55', 'OU': 'JO55', // Denmark
|
|
|
'SM': 'JO89', 'SA': 'JO89', 'SB': 'JO89', 'SE': 'JO89', // Sweden
|
|
|
'LA': 'JO59', 'LB': 'JO59', // Norway
|
|
|
'OH': 'KP20', 'OF': 'KP20', 'OG': 'KP20', 'OI': 'KP20', // Finland
|
|
|
'SP': 'JO91', 'SQ': 'JO91', 'SO': 'JO91', '3Z': 'JO91', // Poland
|
|
|
'OK': 'JN79', 'OL': 'JN79', // Czech Republic
|
|
|
'OM': 'JN88', // Slovakia
|
|
|
'HA': 'JN97', 'HG': 'JN97', // Hungary
|
|
|
'YO': 'KN34', // Romania
|
|
|
'LZ': 'KN22', // Bulgaria
|
|
|
'YU': 'KN04', // Serbia
|
|
|
'9A': 'JN75', // Croatia
|
|
|
'S5': 'JN76', // Slovenia
|
|
|
'SV': 'KM17', 'SX': 'KM17', // Greece
|
|
|
'9H': 'JM75', // Malta
|
|
|
'LY': 'KO24', // Lithuania
|
|
|
'ES': 'KO29', // Estonia
|
|
|
'YL': 'KO26', // Latvia
|
|
|
|
|
|
// Russia & Ukraine
|
|
|
'UA': 'KO85', 'RA': 'KO85', 'RU': 'KO85', 'RV': 'KO85', 'RW': 'KO85', 'RX': 'KO85', 'RZ': 'KO85',
|
|
|
'UA0': 'OO33', 'RA0': 'OO33', 'R0': 'OO33', // Asiatic Russia
|
|
|
'UA9': 'MO06', 'RA9': 'MO06', 'R9': 'MO06', // Ural
|
|
|
'UR': 'KO50', 'UT': 'KO50', 'UX': 'KO50', 'US': 'KO50', // Ukraine
|
|
|
|
|
|
// Japan - by call area
|
|
|
'JA1': 'PM95', 'JH1': 'PM95', 'JR1': 'PM95', 'JE1': 'PM95', 'JF1': 'PM95', 'JG1': 'PM95', 'JI1': 'PM95', 'JJ1': 'PM95', 'JK1': 'PM95', 'JL1': 'PM95', 'JM1': 'PM95', 'JN1': 'PM95', 'JO1': 'PM95', 'JP1': 'PM95', 'JQ1': 'PM95', 'JS1': 'PM95', '7K1': 'PM95', '7L1': 'PM95', '7M1': 'PM95', '7N1': 'PM95',
|
|
|
'JA2': 'PM84', 'JA3': 'PM74', 'JA4': 'PM64', 'JA5': 'PM63', 'JA6': 'PM53', 'JA7': 'QM07', 'JA8': 'QN02', 'JA9': 'PM86', 'JA0': 'PM97',
|
|
|
'JA': 'PM95', 'JH': 'PM95', 'JR': 'PM95', 'JE': 'PM95', 'JF': 'PM95', 'JG': 'PM95', // Generic Japan
|
|
|
|
|
|
// Rest of Asia
|
|
|
'HL': 'PM37', 'DS': 'PM37', '6K': 'PM37', '6L': 'PM37', // South Korea
|
|
|
'BV': 'PL04', 'BW': 'PL04', 'BX': 'PL04', // Taiwan
|
|
|
'BY': 'OM92', 'BT': 'OM92', 'BA': 'OM92', 'BD': 'OM92', 'BG': 'OM92', // China
|
|
|
'VU': 'MK82', 'VU2': 'MK82', 'VU3': 'MK82', // India
|
|
|
'HS': 'OK03', 'E2': 'OK03', // Thailand
|
|
|
'9V': 'OJ11', // Singapore
|
|
|
'9M': 'OJ05', '9W': 'OJ05', // Malaysia
|
|
|
'DU': 'PK04', 'DV': 'PK04', 'DW': 'PK04', 'DX': 'PK04', 'DY': 'PK04', 'DZ': 'PK04', '4D': 'PK04', '4E': 'PK04', '4F': 'PK04', '4G': 'PK04', '4H': 'PK04', '4I': 'PK04', // Philippines
|
|
|
'YB': 'OI33', 'YC': 'OI33', 'YD': 'OI33', 'YE': 'OI33', 'YF': 'OI33', 'YG': 'OI33', 'YH': 'OI33', // Indonesia
|
|
|
|
|
|
// Oceania
|
|
|
'VK': 'QF56', 'VK1': 'QF44', 'VK2': 'QF56', 'VK3': 'QF22', 'VK4': 'QG62', 'VK5': 'PF95', 'VK6': 'OF86', 'VK7': 'QE38', // Australia
|
|
|
'ZL': 'RF70', 'ZL1': 'RF72', 'ZL2': 'RF70', 'ZL3': 'RE66', 'ZL4': 'RE54', // New Zealand
|
|
|
'KH6': 'BL01', // Hawaii
|
|
|
'KH2': 'QK24', // Guam
|
|
|
'FK': 'RG37', // New Caledonia
|
|
|
|
|
|
// South America
|
|
|
'LU': 'GF05', 'LW': 'GF05', 'LO': 'GF05', 'L2': 'GF05', 'L3': 'GF05', 'L4': 'GF05', 'L5': 'GF05', 'L6': 'GF05', 'L7': 'GF05', 'L8': 'GF05', 'L9': 'GF05', // Argentina
|
|
|
'PY': 'GG87', 'PP': 'GG87', 'PQ': 'GG87', 'PR': 'GG87', 'PS': 'GG87', 'PT': 'GG87', 'PU': 'GG87', 'PV': 'GG87', 'PW': 'GG87', 'PX': 'GG87', // Brazil
|
|
|
'CE': 'FF46', 'CA': 'FF46', 'CB': 'FF46', 'CC': 'FF46', 'CD': 'FF46', 'XQ': 'FF46', 'XR': 'FF46', '3G': 'FF46', // Chile
|
|
|
'CX': 'GF15', // Uruguay
|
|
|
'HC': 'FI09', 'HD': 'FI09', // Ecuador
|
|
|
'OA': 'FH17', 'OB': 'FH17', 'OC': 'FH17', // Peru
|
|
|
'HK': 'FJ35', 'HJ': 'FJ35', '5J': 'FJ35', '5K': 'FJ35', // Colombia
|
|
|
'YV': 'FK60', 'YW': 'FK60', 'YX': 'FK60', 'YY': 'FK60', // Venezuela
|
|
|
|
|
|
// Caribbean
|
|
|
'KP4': 'FK68', 'NP4': 'FK68', 'WP4': 'FK68', // Puerto Rico
|
|
|
'VP5': 'FL31', // Turks & Caicos
|
|
|
'HI': 'FK49', // Dominican Republic
|
|
|
'CO': 'FL10', 'CM': 'FL10', // Cuba
|
|
|
'FG': 'FK96', // Guadeloupe
|
|
|
'FM': 'FK94', // Martinique
|
|
|
'PJ': 'FK52', // Netherlands Antilles
|
|
|
|
|
|
// Africa
|
|
|
'ZS': 'KG33', 'ZR': 'KG33', 'ZT': 'KG33', 'ZU': 'KG33', // South Africa
|
|
|
'5N': 'JJ55', // Nigeria
|
|
|
'CN': 'IM63', // Morocco
|
|
|
'7X': 'JM16', // Algeria
|
|
|
'SU': 'KL30', // Egypt
|
|
|
'5Z': 'KI88', // Kenya
|
|
|
'ET': 'KJ49', // Ethiopia
|
|
|
'EA8': 'IL18', 'EA9': 'IM75', // Canary Islands, Ceuta
|
|
|
|
|
|
// Middle East
|
|
|
'A4': 'LL93', 'A41': 'LL93', 'A45': 'LL93', // Oman
|
|
|
'A6': 'LL65', 'A61': 'LL65', // UAE
|
|
|
'A7': 'LL45', 'A71': 'LL45', // Qatar
|
|
|
'HZ': 'LL24', // Saudi Arabia
|
|
|
'4X': 'KM72', '4Z': 'KM72', // Israel
|
|
|
'OD': 'KM73', // Lebanon
|
|
|
|
|
|
// Other
|
|
|
'VP8': 'GD18', // Falkland Islands
|
|
|
'CE9': 'FC56', 'DP0': 'IB59', 'KC4': 'FC56', // Antarctica
|
|
|
'SV5': 'KM46', 'SV9': 'KM25', // Dodecanese, Crete
|
|
|
};
|
|
|
|
|
|
const upper = callsign.toUpperCase();
|
|
|
|
|
|
// Smart US callsign detection - US prefixes follow specific patterns
|
|
|
// K, N, W + anything = USA
|
|
|
// A[A-L] + digit = USA (e.g., AA0, AE5, AL7)
|
|
|
const usCallPattern = /^([KNW][0-9]?|A[A-L][0-9])/;
|
|
|
const usMatch = upper.match(usCallPattern);
|
|
|
if (usMatch) {
|
|
|
// Extract call district (the digit) for more precise location
|
|
|
const districtMatch = upper.match(/^[KNWA][A-L]?([0-9])/);
|
|
|
const district = districtMatch ? districtMatch[1] : null;
|
|
|
|
|
|
const usDistrictGrids = {
|
|
|
'0': 'EN31', // Central (CO, IA, KS, MN, MO, NE, ND, SD)
|
|
|
'1': 'FN41', // New England (CT, MA, ME, NH, RI, VT)
|
|
|
'2': 'FN20', // NY, NJ
|
|
|
'3': 'FM19', // PA, MD, DE
|
|
|
'4': 'EM73', // Southeast (AL, FL, GA, KY, NC, SC, TN, VA)
|
|
|
'5': 'EM12', // TX, OK, LA, AR, MS, NM
|
|
|
'6': 'CM97', // California
|
|
|
'7': 'DN31', // Pacific NW/Mountain (AZ, ID, MT, NV, OR, UT, WA, WY)
|
|
|
'8': 'EN81', // MI, OH, WV
|
|
|
'9': 'EN52', // IL, IN, WI
|
|
|
};
|
|
|
|
|
|
const grid = district && usDistrictGrids[district] ? usDistrictGrids[district] : 'EM79';
|
|
|
const gridLoc = maidenheadToLatLon(grid);
|
|
|
if (gridLoc) {
|
|
|
return {
|
|
|
callsign,
|
|
|
lat: gridLoc.lat,
|
|
|
lon: gridLoc.lon,
|
|
|
grid: grid,
|
|
|
country: 'USA',
|
|
|
estimated: true,
|
|
|
source: 'prefix-grid'
|
|
|
};
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Try longest prefix match first (up to 4 chars) for non-US calls
|
|
|
for (let len = 4; len >= 1; len--) {
|
|
|
const prefix = upper.substring(0, len);
|
|
|
if (prefixGrids[prefix]) {
|
|
|
const gridLoc = maidenheadToLatLon(prefixGrids[prefix]);
|
|
|
if (gridLoc) {
|
|
|
return {
|
|
|
callsign,
|
|
|
lat: gridLoc.lat,
|
|
|
lon: gridLoc.lon,
|
|
|
grid: prefixGrids[prefix],
|
|
|
country: getCountryFromPrefix(prefix),
|
|
|
estimated: true,
|
|
|
source: 'prefix-grid'
|
|
|
};
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Fallback to first character (most likely country for each letter)
|
|
|
const firstCharGrids = {
|
|
|
'A': 'EM79', 'B': 'PL02', 'C': 'FN03', 'D': 'JO51', 'E': 'IO63', // A=USA (AA-AL), B=China, C=Canada, D=Germany, E=Spain/Ireland
|
|
|
'F': 'JN18', 'G': 'IO91', 'H': 'KM72', 'I': 'JN61', 'J': 'PM95', // F=France, G=UK, H=varies, I=Italy, J=Japan
|
|
|
'K': 'EM79', 'L': 'GF05', 'M': 'IO91', 'N': 'EM79', 'O': 'KP20', // K=USA, L=Argentina, M=UK, N=USA, O=Finland
|
|
|
'P': 'GG87', 'R': 'KO85', 'S': 'JO89', 'T': 'KI88', 'U': 'KO85', // P=Brazil, R=Russia, S=Sweden, T=varies, U=Russia
|
|
|
'V': 'QF56', 'W': 'EM79', 'X': 'EK09', 'Y': 'JO91', 'Z': 'KG33' // V=Australia, W=USA, X=Mexico, Y=varies, Z=South Africa
|
|
|
};
|
|
|
|
|
|
const firstChar = upper[0];
|
|
|
if (firstCharGrids[firstChar]) {
|
|
|
const gridLoc = maidenheadToLatLon(firstCharGrids[firstChar]);
|
|
|
if (gridLoc) {
|
|
|
return {
|
|
|
callsign,
|
|
|
lat: gridLoc.lat,
|
|
|
lon: gridLoc.lon,
|
|
|
grid: firstCharGrids[firstChar],
|
|
|
country: 'Unknown',
|
|
|
estimated: true,
|
|
|
source: 'prefix-grid'
|
|
|
};
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
// Helper to get country name from prefix
|
|
|
function getCountryFromPrefix(prefix) {
|
|
|
const prefixCountries = {
|
|
|
'W': 'USA', 'K': 'USA', 'N': 'USA', 'AA': 'USA',
|
|
|
'VE': 'Canada', 'VA': 'Canada', 'VY': 'Canada', 'VO': 'Canada',
|
|
|
'G': 'England', 'M': 'England', '2E': 'England', 'GM': 'Scotland', 'GW': 'Wales', 'GI': 'N. Ireland',
|
|
|
'EI': 'Ireland', 'F': 'France', 'DL': 'Germany', 'I': 'Italy', 'EA': 'Spain', 'CT': 'Portugal',
|
|
|
'PA': 'Netherlands', 'ON': 'Belgium', 'HB': 'Switzerland', 'OE': 'Austria',
|
|
|
'OZ': 'Denmark', 'SM': 'Sweden', 'LA': 'Norway', 'OH': 'Finland',
|
|
|
'SP': 'Poland', 'OK': 'Czech Rep', 'HA': 'Hungary', 'YO': 'Romania', 'LZ': 'Bulgaria',
|
|
|
'UA': 'Russia', 'UR': 'Ukraine',
|
|
|
'JA': 'Japan', 'HL': 'S. Korea', 'BV': 'Taiwan', 'BY': 'China', 'VU': 'India', 'HS': 'Thailand',
|
|
|
'VK': 'Australia', 'ZL': 'New Zealand', 'KH6': 'Hawaii',
|
|
|
'LU': 'Argentina', 'PY': 'Brazil', 'CE': 'Chile', 'HK': 'Colombia', 'YV': 'Venezuela',
|
|
|
'ZS': 'South Africa', 'CN': 'Morocco', 'SU': 'Egypt'
|
|
|
};
|
|
|
|
|
|
for (let len = 3; len >= 1; len--) {
|
|
|
const p = prefix.substring(0, len);
|
|
|
if (prefixCountries[p]) return prefixCountries[p];
|
|
|
}
|
|
|
return 'Unknown';
|
|
|
}
|
|
|
|
|
|
// ============================================
|
|
|
// MY SPOTS API - Get spots involving a specific callsign
|
|
|
// ============================================
|
|
|
|
|
|
app.get('/api/myspots/:callsign', async (req, res) => {
|
|
|
const callsign = req.params.callsign.toUpperCase();
|
|
|
console.log('[My Spots] Searching for callsign:', callsign);
|
|
|
|
|
|
const mySpots = [];
|
|
|
|
|
|
try {
|
|
|
// Try HamQTH for spots involving this callsign
|
|
|
const controller = new AbortController();
|
|
|
const timeout = setTimeout(() => controller.abort(), 10000);
|
|
|
|
|
|
const response = await fetch(
|
|
|
`https://www.hamqth.com/dxc_csv.php?limit=100`,
|
|
|
{
|
|
|
headers: { 'User-Agent': 'OpenHamClock/3.3' },
|
|
|
signal: controller.signal
|
|
|
}
|
|
|
);
|
|
|
clearTimeout(timeout);
|
|
|
|
|
|
if (response.ok) {
|
|
|
const text = await response.text();
|
|
|
const lines = text.trim().split('\n');
|
|
|
|
|
|
for (const line of lines) {
|
|
|
if (!line.trim()) continue;
|
|
|
const parts = line.split('^');
|
|
|
if (parts.length < 3) continue;
|
|
|
|
|
|
const spotter = parts[0]?.trim().toUpperCase();
|
|
|
const dxCall = parts[2]?.trim().toUpperCase();
|
|
|
const freq = parts[1]?.trim();
|
|
|
const comment = parts[3]?.trim() || '';
|
|
|
const timeStr = parts[4]?.trim() || '';
|
|
|
|
|
|
// Check if our callsign is involved (as spotter or spotted)
|
|
|
if (spotter === callsign || dxCall === callsign ||
|
|
|
spotter.includes(callsign) || dxCall.includes(callsign)) {
|
|
|
mySpots.push({
|
|
|
spotter,
|
|
|
dxCall,
|
|
|
freq: freq ? (parseFloat(freq) / 1000).toFixed(3) : '0.000',
|
|
|
comment,
|
|
|
time: timeStr ? timeStr.substring(0, 5) + 'z' : '',
|
|
|
isMySpot: spotter.includes(callsign),
|
|
|
isSpottedMe: dxCall.includes(callsign)
|
|
|
});
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
console.log('[My Spots] Found', mySpots.length, 'spots involving', callsign);
|
|
|
|
|
|
// Now try to get locations for each unique callsign
|
|
|
const uniqueCalls = [...new Set(mySpots.map(s => s.isMySpot ? s.dxCall : s.spotter))];
|
|
|
const locations = {};
|
|
|
|
|
|
for (const call of uniqueCalls.slice(0, 10)) { // Limit to 10 lookups
|
|
|
try {
|
|
|
const loc = estimateLocationFromPrefix(call);
|
|
|
if (loc) {
|
|
|
locations[call] = { lat: loc.lat, lon: loc.lon, country: loc.country };
|
|
|
}
|
|
|
} catch (e) {
|
|
|
// Ignore lookup errors
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Add locations to spots
|
|
|
const spotsWithLocations = mySpots.map(spot => {
|
|
|
const targetCall = spot.isMySpot ? spot.dxCall : spot.spotter;
|
|
|
const loc = locations[targetCall];
|
|
|
return {
|
|
|
...spot,
|
|
|
targetCall,
|
|
|
lat: loc?.lat,
|
|
|
lon: loc?.lon,
|
|
|
country: loc?.country
|
|
|
};
|
|
|
}).filter(s => s.lat && s.lon); // Only return spots with valid locations
|
|
|
|
|
|
res.json(spotsWithLocations);
|
|
|
} catch (error) {
|
|
|
console.error('[My Spots] Error:', error.message);
|
|
|
res.json([]);
|
|
|
}
|
|
|
});
|
|
|
|
|
|
// ============================================
|
|
|
// SATELLITE TRACKING API
|
|
|
// ============================================
|
|
|
|
|
|
// Ham radio satellites - NORAD IDs
|
|
|
const HAM_SATELLITES = {
|
|
|
'ISS': { norad: 25544, name: 'ISS (ZARYA)', color: '#00ffff', priority: 1 },
|
|
|
'AO-91': { norad: 43017, name: 'AO-91 (Fox-1B)', color: '#ff6600', priority: 2 },
|
|
|
'AO-92': { norad: 43137, name: 'AO-92 (Fox-1D)', color: '#ff9900', priority: 2 },
|
|
|
'SO-50': { norad: 27607, name: 'SO-50 (SaudiSat)', color: '#00ff00', priority: 2 },
|
|
|
'RS-44': { norad: 44909, name: 'RS-44 (DOSAAF)', color: '#ff0066', priority: 2 },
|
|
|
'IO-117': { norad: 53106, name: 'IO-117 (GreenCube)', color: '#00ff99', priority: 3 },
|
|
|
'CAS-4A': { norad: 42761, name: 'CAS-4A (ZHUHAI-1 01)', color: '#9966ff', priority: 3 },
|
|
|
'CAS-4B': { norad: 42759, name: 'CAS-4B (ZHUHAI-1 02)', color: '#9933ff', priority: 3 },
|
|
|
'PO-101': { norad: 43678, name: 'PO-101 (Diwata-2)', color: '#ff3399', priority: 3 },
|
|
|
'TEVEL': { norad: 50988, name: 'TEVEL-1', color: '#66ccff', priority: 4 }
|
|
|
};
|
|
|
|
|
|
// Cache for TLE data (refresh every 6 hours)
|
|
|
let tleCache = { data: null, timestamp: 0 };
|
|
|
const TLE_CACHE_DURATION = 6 * 60 * 60 * 1000; // 6 hours
|
|
|
|
|
|
app.get('/api/satellites/tle', async (req, res) => {
|
|
|
console.log('[Satellites] Fetching TLE data...');
|
|
|
|
|
|
try {
|
|
|
const now = Date.now();
|
|
|
|
|
|
// Return cached data if fresh
|
|
|
if (tleCache.data && (now - tleCache.timestamp) < TLE_CACHE_DURATION) {
|
|
|
console.log('[Satellites] Returning cached TLE data');
|
|
|
return res.json(tleCache.data);
|
|
|
}
|
|
|
|
|
|
// Fetch fresh TLE data from CelesTrak
|
|
|
const tleData = {};
|
|
|
|
|
|
// Fetch amateur radio satellites TLE
|
|
|
const controller = new AbortController();
|
|
|
const timeout = setTimeout(() => controller.abort(), 15000);
|
|
|
|
|
|
const response = await fetch(
|
|
|
'https://celestrak.org/NORAD/elements/gp.php?GROUP=amateur&FORMAT=tle',
|
|
|
{
|
|
|
headers: { 'User-Agent': 'OpenHamClock/3.3' },
|
|
|
signal: controller.signal
|
|
|
}
|
|
|
);
|
|
|
clearTimeout(timeout);
|
|
|
|
|
|
if (response.ok) {
|
|
|
const text = await response.text();
|
|
|
const lines = text.trim().split('\n');
|
|
|
|
|
|
// Parse TLE data (3 lines per satellite: name, line1, line2)
|
|
|
for (let i = 0; i < lines.length - 2; i += 3) {
|
|
|
const name = lines[i].trim();
|
|
|
const line1 = lines[i + 1]?.trim();
|
|
|
const line2 = lines[i + 2]?.trim();
|
|
|
|
|
|
if (line1 && line2 && line1.startsWith('1 ') && line2.startsWith('2 ')) {
|
|
|
// Extract NORAD ID from line 1
|
|
|
const noradId = parseInt(line1.substring(2, 7));
|
|
|
|
|
|
// Check if this is a satellite we care about
|
|
|
for (const [key, sat] of Object.entries(HAM_SATELLITES)) {
|
|
|
if (sat.norad === noradId) {
|
|
|
tleData[key] = {
|
|
|
...sat,
|
|
|
tle1: line1,
|
|
|
tle2: line2
|
|
|
};
|
|
|
console.log('[Satellites] Found TLE for:', key, noradId);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Also try to get ISS specifically (it's in the stations group)
|
|
|
if (!tleData['ISS']) {
|
|
|
try {
|
|
|
const issResponse = await fetch(
|
|
|
'https://celestrak.org/NORAD/elements/gp.php?CATNR=25544&FORMAT=tle',
|
|
|
{ headers: { 'User-Agent': 'OpenHamClock/3.3' } }
|
|
|
);
|
|
|
if (issResponse.ok) {
|
|
|
const issText = await issResponse.text();
|
|
|
const issLines = issText.trim().split('\n');
|
|
|
if (issLines.length >= 3) {
|
|
|
tleData['ISS'] = {
|
|
|
...HAM_SATELLITES['ISS'],
|
|
|
tle1: issLines[1].trim(),
|
|
|
tle2: issLines[2].trim()
|
|
|
};
|
|
|
console.log('[Satellites] Found ISS TLE');
|
|
|
}
|
|
|
}
|
|
|
} catch (e) {
|
|
|
console.log('[Satellites] Could not fetch ISS TLE:', e.message);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Cache the result
|
|
|
tleCache = { data: tleData, timestamp: now };
|
|
|
|
|
|
console.log('[Satellites] Loaded TLE for', Object.keys(tleData).length, 'satellites');
|
|
|
res.json(tleData);
|
|
|
|
|
|
} catch (error) {
|
|
|
console.error('[Satellites] TLE fetch error:', error.message);
|
|
|
// Return cached data even if stale, or empty object
|
|
|
res.json(tleCache.data || {});
|
|
|
}
|
|
|
});
|
|
|
|
|
|
// ============================================
|
|
|
// IONOSONDE DATA API (Real-time ionospheric data from KC2G/GIRO)
|
|
|
// ============================================
|
|
|
|
|
|
// Cache for ionosonde data (refresh every 10 minutes)
|
|
|
let ionosondeCache = {
|
|
|
data: null,
|
|
|
timestamp: 0,
|
|
|
maxAge: 10 * 60 * 1000 // 10 minutes
|
|
|
};
|
|
|
|
|
|
// Fetch real-time ionosonde data from KC2G (GIRO network)
|
|
|
async function fetchIonosondeData() {
|
|
|
const now = Date.now();
|
|
|
|
|
|
// Return cached data if fresh
|
|
|
if (ionosondeCache.data && (now - ionosondeCache.timestamp) < ionosondeCache.maxAge) {
|
|
|
return ionosondeCache.data;
|
|
|
}
|
|
|
|
|
|
try {
|
|
|
const response = await fetch('https://prop.kc2g.com/api/stations.json', {
|
|
|
headers: { 'User-Agent': 'OpenHamClock/3.5' },
|
|
|
timeout: 15000
|
|
|
});
|
|
|
|
|
|
if (!response.ok) throw new Error(`HTTP ${response.status}`);
|
|
|
|
|
|
const data = await response.json();
|
|
|
|
|
|
// Filter to only recent data (within last 2 hours) with valid readings
|
|
|
const twoHoursAgo = new Date(Date.now() - 2 * 60 * 60 * 1000);
|
|
|
const validStations = data.filter(s => {
|
|
|
if (!s.fof2 || !s.station) return false;
|
|
|
const stationTime = new Date(s.time);
|
|
|
return stationTime > twoHoursAgo && s.cs > 0; // confidence score > 0
|
|
|
}).map(s => ({
|
|
|
code: s.station.code,
|
|
|
name: s.station.name,
|
|
|
lat: parseFloat(s.station.latitude),
|
|
|
lon: parseFloat(s.station.longitude) > 180 ? parseFloat(s.station.longitude) - 360 : parseFloat(s.station.longitude),
|
|
|
foF2: s.fof2,
|
|
|
mufd: s.mufd, // MUF at 3000km
|
|
|
hmF2: s.hmf2, // Height of F2 layer
|
|
|
md: parseFloat(s.md) || 3.0, // M(3000)F2 factor
|
|
|
confidence: s.cs,
|
|
|
time: s.time
|
|
|
}));
|
|
|
|
|
|
ionosondeCache = {
|
|
|
data: validStations,
|
|
|
timestamp: now
|
|
|
};
|
|
|
|
|
|
console.log(`[Ionosonde] Fetched ${validStations.length} valid stations from KC2G`);
|
|
|
return validStations;
|
|
|
|
|
|
} catch (error) {
|
|
|
console.error('[Ionosonde] Fetch error:', error.message);
|
|
|
return ionosondeCache.data || [];
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// API endpoint to get ionosonde data
|
|
|
app.get('/api/ionosonde', async (req, res) => {
|
|
|
try {
|
|
|
const stations = await fetchIonosondeData();
|
|
|
res.json({
|
|
|
count: stations.length,
|
|
|
timestamp: new Date().toISOString(),
|
|
|
stations: stations
|
|
|
});
|
|
|
} catch (error) {
|
|
|
console.error('[Ionosonde] API error:', error.message);
|
|
|
res.status(500).json({ error: 'Failed to fetch ionosonde data' });
|
|
|
}
|
|
|
});
|
|
|
|
|
|
// Calculate distance between two points in km
|
|
|
function haversineDistance(lat1, lon1, lat2, lon2) {
|
|
|
const R = 6371;
|
|
|
const dLat = (lat2 - lat1) * Math.PI / 180;
|
|
|
const dLon = (lon2 - lon1) * Math.PI / 180;
|
|
|
const a = Math.sin(dLat/2) * Math.sin(dLat/2) +
|
|
|
Math.cos(lat1 * Math.PI / 180) * Math.cos(lat2 * Math.PI / 180) *
|
|
|
Math.sin(dLon/2) * Math.sin(dLon/2);
|
|
|
return R * 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
|
|
|
}
|
|
|
|
|
|
// Interpolate foF2 at a given location using inverse distance weighting
|
|
|
function interpolateFoF2(lat, lon, stations) {
|
|
|
if (!stations || stations.length === 0) return null;
|
|
|
|
|
|
// Maximum distance (km) to consider ionosonde data valid
|
|
|
// Beyond this, the data is too far away to be representative
|
|
|
const MAX_VALID_DISTANCE = 3000; // km
|
|
|
|
|
|
// Calculate distances to all stations
|
|
|
const stationsWithDist = stations.map(s => ({
|
|
|
...s,
|
|
|
distance: haversineDistance(lat, lon, s.lat, s.lon)
|
|
|
})).filter(s => s.foF2 > 0);
|
|
|
|
|
|
if (stationsWithDist.length === 0) return null;
|
|
|
|
|
|
// Sort by distance and take nearest 5
|
|
|
stationsWithDist.sort((a, b) => a.distance - b.distance);
|
|
|
|
|
|
// Check if nearest station is within valid range
|
|
|
if (stationsWithDist[0].distance > MAX_VALID_DISTANCE) {
|
|
|
console.log(`[Ionosonde] Nearest station ${stationsWithDist[0].name} is ${Math.round(stationsWithDist[0].distance)}km away - too far, using estimates`);
|
|
|
return {
|
|
|
foF2: null,
|
|
|
mufd: null,
|
|
|
hmF2: null,
|
|
|
md: 3.0,
|
|
|
nearestStation: stationsWithDist[0].name,
|
|
|
nearestDistance: Math.round(stationsWithDist[0].distance),
|
|
|
stationsUsed: 0,
|
|
|
method: 'no-coverage',
|
|
|
reason: `Nearest ionosonde (${stationsWithDist[0].name}) is ${Math.round(stationsWithDist[0].distance)}km away - no local coverage`
|
|
|
};
|
|
|
}
|
|
|
|
|
|
// Filter to only stations within valid range
|
|
|
const validStations = stationsWithDist.filter(s => s.distance <= MAX_VALID_DISTANCE);
|
|
|
const nearest = validStations.slice(0, 5);
|
|
|
|
|
|
// If very close to a station, use its value directly
|
|
|
if (nearest[0].distance < 100) {
|
|
|
return {
|
|
|
foF2: nearest[0].foF2,
|
|
|
mufd: nearest[0].mufd,
|
|
|
hmF2: nearest[0].hmF2,
|
|
|
md: nearest[0].md,
|
|
|
source: nearest[0].name,
|
|
|
confidence: nearest[0].confidence,
|
|
|
nearestDistance: Math.round(nearest[0].distance),
|
|
|
method: 'direct'
|
|
|
};
|
|
|
}
|
|
|
|
|
|
// Inverse distance weighted interpolation
|
|
|
let sumWeights = 0;
|
|
|
let sumFoF2 = 0;
|
|
|
let sumMufd = 0;
|
|
|
let sumHmF2 = 0;
|
|
|
let sumMd = 0;
|
|
|
|
|
|
nearest.forEach(s => {
|
|
|
const weight = (s.confidence / 100) / Math.pow(s.distance, 2);
|
|
|
sumWeights += weight;
|
|
|
sumFoF2 += s.foF2 * weight;
|
|
|
if (s.mufd) sumMufd += s.mufd * weight;
|
|
|
if (s.hmF2) sumHmF2 += s.hmF2 * weight;
|
|
|
if (s.md) sumMd += s.md * weight;
|
|
|
});
|
|
|
|
|
|
return {
|
|
|
foF2: sumFoF2 / sumWeights,
|
|
|
mufd: sumMufd > 0 ? sumMufd / sumWeights : null,
|
|
|
hmF2: sumHmF2 > 0 ? sumHmF2 / sumWeights : null,
|
|
|
md: sumMd > 0 ? sumMd / sumWeights : 3.0,
|
|
|
nearestStation: nearest[0].name,
|
|
|
nearestDistance: Math.round(nearest[0].distance),
|
|
|
stationsUsed: nearest.length,
|
|
|
method: 'interpolated'
|
|
|
};
|
|
|
}
|
|
|
|
|
|
// ============================================
|
|
|
// HYBRID PROPAGATION SYSTEM
|
|
|
// Combines ITURHFProp (ITU-R P.533-14) with real-time ionosonde data
|
|
|
// ============================================
|
|
|
|
|
|
// Cache for ITURHFProp predictions (5-minute cache)
|
|
|
let iturhfpropCache = {
|
|
|
data: null,
|
|
|
key: null,
|
|
|
timestamp: 0,
|
|
|
maxAge: 5 * 60 * 1000 // 5 minutes
|
|
|
};
|
|
|
|
|
|
/**
|
|
|
* Fetch base prediction from ITURHFProp service
|
|
|
*/
|
|
|
async function fetchITURHFPropPrediction(txLat, txLon, rxLat, rxLon, ssn, month, hour) {
|
|
|
if (!ITURHFPROP_URL) return null;
|
|
|
|
|
|
const cacheKey = `${txLat.toFixed(1)},${txLon.toFixed(1)}-${rxLat.toFixed(1)},${rxLon.toFixed(1)}-${ssn}-${month}-${hour}`;
|
|
|
const now = Date.now();
|
|
|
|
|
|
// Check cache
|
|
|
if (iturhfpropCache.key === cacheKey && (now - iturhfpropCache.timestamp) < iturhfpropCache.maxAge) {
|
|
|
console.log('[Hybrid] Using cached ITURHFProp prediction');
|
|
|
return iturhfpropCache.data;
|
|
|
}
|
|
|
|
|
|
try {
|
|
|
console.log('[Hybrid] Fetching from ITURHFProp service...');
|
|
|
const url = `${ITURHFPROP_URL}/api/bands?txLat=${txLat}&txLon=${txLon}&rxLat=${rxLat}&rxLon=${rxLon}&ssn=${ssn}&month=${month}&hour=${hour}`;
|
|
|
|
|
|
const response = await fetch(url, { timeout: 10000 });
|
|
|
if (!response.ok) {
|
|
|
console.log('[Hybrid] ITURHFProp returned error:', response.status);
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
const data = await response.json();
|
|
|
console.log('[Hybrid] ITURHFProp prediction received, MUF:', data.muf);
|
|
|
|
|
|
// Cache the result
|
|
|
iturhfpropCache = {
|
|
|
data,
|
|
|
key: cacheKey,
|
|
|
timestamp: now,
|
|
|
maxAge: iturhfpropCache.maxAge
|
|
|
};
|
|
|
|
|
|
return data;
|
|
|
} catch (err) {
|
|
|
console.log('[Hybrid] ITURHFProp service unavailable:', err.message);
|
|
|
return null;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* Fetch 24-hour predictions from ITURHFProp
|
|
|
*/
|
|
|
async function fetchITURHFPropHourly(txLat, txLon, rxLat, rxLon, ssn, month) {
|
|
|
if (!ITURHFPROP_URL) return null;
|
|
|
|
|
|
try {
|
|
|
console.log('[Hybrid] Fetching 24-hour prediction from ITURHFProp...');
|
|
|
const url = `${ITURHFPROP_URL}/api/predict/hourly?txLat=${txLat}&txLon=${txLon}&rxLat=${rxLat}&rxLon=${rxLon}&ssn=${ssn}&month=${month}`;
|
|
|
|
|
|
const response = await fetch(url, { timeout: 60000 }); // 60s timeout for 24-hour calc
|
|
|
if (!response.ok) return null;
|
|
|
|
|
|
const data = await response.json();
|
|
|
console.log('[Hybrid] Received 24-hour prediction');
|
|
|
return data;
|
|
|
} catch (err) {
|
|
|
console.log('[Hybrid] ITURHFProp hourly unavailable:', err.message);
|
|
|
return null;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* Calculate ionospheric correction factor
|
|
|
* Compares expected foF2 (from P.533 model) vs actual ionosonde foF2
|
|
|
* Returns multiplier to adjust reliability predictions
|
|
|
*/
|
|
|
function calculateIonoCorrection(expectedFoF2, actualFoF2, kIndex) {
|
|
|
if (!expectedFoF2 || !actualFoF2) return { factor: 1.0, confidence: 'low' };
|
|
|
|
|
|
// Ratio of actual to expected ionospheric conditions
|
|
|
const ratio = actualFoF2 / expectedFoF2;
|
|
|
|
|
|
// Geomagnetic correction (storms reduce reliability)
|
|
|
const kFactor = kIndex <= 3 ? 1.0 : 1.0 - (kIndex - 3) * 0.1;
|
|
|
|
|
|
// Combined correction factor
|
|
|
// ratio > 1 means better conditions than predicted
|
|
|
// ratio < 1 means worse conditions than predicted
|
|
|
const factor = ratio * kFactor;
|
|
|
|
|
|
// Confidence based on how close actual is to expected
|
|
|
let confidence;
|
|
|
if (Math.abs(ratio - 1) < 0.15) {
|
|
|
confidence = 'high'; // Within 15% - model is accurate
|
|
|
} else if (Math.abs(ratio - 1) < 0.3) {
|
|
|
confidence = 'medium'; // Within 30%
|
|
|
} else {
|
|
|
confidence = 'low'; // Model significantly off - rely more on ionosonde
|
|
|
}
|
|
|
|
|
|
console.log(`[Hybrid] Correction factor: ${factor.toFixed(2)} (expected foF2: ${expectedFoF2.toFixed(1)}, actual: ${actualFoF2.toFixed(1)}, K: ${kIndex})`);
|
|
|
|
|
|
return { factor, confidence, ratio, kFactor };
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* Apply ionospheric correction to ITURHFProp predictions
|
|
|
*/
|
|
|
function applyHybridCorrection(iturhfpropData, ionoData, kIndex, sfi) {
|
|
|
if (!iturhfpropData?.bands) return null;
|
|
|
|
|
|
// Estimate what foF2 ITURHFProp expected (based on SSN/SFI)
|
|
|
const ssn = Math.max(0, Math.round((sfi - 67) / 0.97));
|
|
|
const expectedFoF2 = 0.9 * Math.sqrt(ssn + 15) * 1.2; // Rough estimate at solar noon
|
|
|
|
|
|
// Get actual foF2 from ionosonde
|
|
|
const actualFoF2 = ionoData?.foF2;
|
|
|
|
|
|
// Calculate correction
|
|
|
const correction = calculateIonoCorrection(expectedFoF2, actualFoF2, kIndex);
|
|
|
|
|
|
// Apply correction to each band
|
|
|
const correctedBands = {};
|
|
|
for (const [band, data] of Object.entries(iturhfpropData.bands)) {
|
|
|
const baseReliability = data.reliability || 50;
|
|
|
|
|
|
// Apply correction factor with bounds
|
|
|
let correctedReliability = baseReliability * correction.factor;
|
|
|
correctedReliability = Math.max(0, Math.min(100, correctedReliability));
|
|
|
|
|
|
// For high bands, also check if we're above/below MUF
|
|
|
const freq = data.freq;
|
|
|
if (actualFoF2 && freq > actualFoF2 * 3.5) {
|
|
|
// Frequency likely above MUF - reduce reliability
|
|
|
correctedReliability *= 0.5;
|
|
|
}
|
|
|
|
|
|
correctedBands[band] = {
|
|
|
...data,
|
|
|
reliability: Math.round(correctedReliability),
|
|
|
baseReliability: Math.round(baseReliability),
|
|
|
correctionApplied: correction.factor !== 1.0,
|
|
|
status: correctedReliability >= 70 ? 'GOOD' :
|
|
|
correctedReliability >= 40 ? 'FAIR' : 'POOR'
|
|
|
};
|
|
|
}
|
|
|
|
|
|
// Correct MUF based on actual ionosonde data
|
|
|
let correctedMuf = iturhfpropData.muf;
|
|
|
if (actualFoF2 && ionoData?.md) {
|
|
|
// Use actual foF2 * M-factor for more accurate MUF
|
|
|
const ionoMuf = actualFoF2 * (ionoData.md || 3.0);
|
|
|
// Blend ITURHFProp MUF with ionosonde-derived MUF
|
|
|
correctedMuf = (iturhfpropData.muf * 0.4) + (ionoMuf * 0.6);
|
|
|
}
|
|
|
|
|
|
return {
|
|
|
bands: correctedBands,
|
|
|
muf: Math.round(correctedMuf * 10) / 10,
|
|
|
correction,
|
|
|
model: 'Hybrid ITU-R P.533-14'
|
|
|
};
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* Estimate expected foF2 from P.533 model for a given hour
|
|
|
*/
|
|
|
function estimateExpectedFoF2(ssn, lat, hour) {
|
|
|
// Simplified P.533 foF2 estimation
|
|
|
// diurnal variation: peak around 14:00 local, minimum around 04:00
|
|
|
const hourFactor = 0.6 + 0.4 * Math.cos((hour - 14) * Math.PI / 12);
|
|
|
const latFactor = 1 - Math.abs(lat) / 150;
|
|
|
const ssnFactor = Math.sqrt(ssn + 15);
|
|
|
|
|
|
return 0.9 * ssnFactor * hourFactor * latFactor;
|
|
|
}
|
|
|
|
|
|
// ============================================
|
|
|
// ENHANCED PROPAGATION PREDICTION API (Hybrid ITU-R P.533)
|
|
|
// ============================================
|
|
|
|
|
|
app.get('/api/propagation', async (req, res) => {
|
|
|
const { deLat, deLon, dxLat, dxLon } = req.query;
|
|
|
|
|
|
const useHybrid = ITURHFPROP_URL !== null;
|
|
|
console.log(`[Propagation] ${useHybrid ? 'Hybrid' : 'Standalone'} calculation for DE:`, deLat, deLon, 'to DX:', dxLat, dxLon);
|
|
|
|
|
|
try {
|
|
|
// Get current space weather data
|
|
|
let sfi = 150, ssn = 100, kIndex = 2, aIndex = 10;
|
|
|
|
|
|
try {
|
|
|
const [fluxRes, kRes] = await Promise.allSettled([
|
|
|
fetch('https://services.swpc.noaa.gov/json/f107_cm_flux.json'),
|
|
|
fetch('https://services.swpc.noaa.gov/products/noaa-planetary-k-index.json')
|
|
|
]);
|
|
|
|
|
|
if (fluxRes.status === 'fulfilled' && fluxRes.value.ok) {
|
|
|
const data = await fluxRes.value.json();
|
|
|
if (data?.length) sfi = Math.round(data[data.length - 1].flux || 150);
|
|
|
}
|
|
|
if (kRes.status === 'fulfilled' && kRes.value.ok) {
|
|
|
const data = await kRes.value.json();
|
|
|
if (data?.length > 1) kIndex = parseInt(data[data.length - 1][1]) || 2;
|
|
|
}
|
|
|
ssn = Math.max(0, Math.round((sfi - 67) / 0.97));
|
|
|
} catch (e) {
|
|
|
console.log('[Propagation] Using default solar values');
|
|
|
}
|
|
|
|
|
|
// Get real ionosonde data
|
|
|
const ionosondeStations = await fetchIonosondeData();
|
|
|
|
|
|
// Calculate path geometry
|
|
|
const de = { lat: parseFloat(deLat) || 40, lon: parseFloat(deLon) || -75 };
|
|
|
const dx = { lat: parseFloat(dxLat) || 35, lon: parseFloat(dxLon) || 139 };
|
|
|
|
|
|
const distance = haversineDistance(de.lat, de.lon, dx.lat, dx.lon);
|
|
|
const midLat = (de.lat + dx.lat) / 2;
|
|
|
let midLon = (de.lon + dx.lon) / 2;
|
|
|
|
|
|
// Handle antimeridian crossing
|
|
|
if (Math.abs(de.lon - dx.lon) > 180) {
|
|
|
midLon = (de.lon + dx.lon + 360) / 2;
|
|
|
if (midLon > 180) midLon -= 360;
|
|
|
}
|
|
|
|
|
|
// Get ionospheric data at path midpoint
|
|
|
const ionoData = interpolateFoF2(midLat, midLon, ionosondeStations);
|
|
|
const hasValidIonoData = ionoData && ionoData.method !== 'no-coverage' && ionoData.foF2;
|
|
|
|
|
|
const currentHour = new Date().getUTCHours();
|
|
|
const currentMonth = new Date().getMonth() + 1;
|
|
|
|
|
|
console.log('[Propagation] Distance:', Math.round(distance), 'km');
|
|
|
console.log('[Propagation] Solar: SFI', sfi, 'SSN', ssn, 'K', kIndex);
|
|
|
if (hasValidIonoData) {
|
|
|
console.log('[Propagation] Real foF2:', ionoData.foF2?.toFixed(2), 'MHz from', ionoData.nearestStation || ionoData.source);
|
|
|
}
|
|
|
|
|
|
// ===== HYBRID MODE: Try ITURHFProp first =====
|
|
|
let hybridResult = null;
|
|
|
if (useHybrid) {
|
|
|
const iturhfpropData = await fetchITURHFPropPrediction(
|
|
|
de.lat, de.lon, dx.lat, dx.lon, ssn, currentMonth, currentHour
|
|
|
);
|
|
|
|
|
|
if (iturhfpropData && hasValidIonoData) {
|
|
|
// Full hybrid: ITURHFProp + ionosonde correction
|
|
|
hybridResult = applyHybridCorrection(iturhfpropData, ionoData, kIndex, sfi);
|
|
|
console.log('[Propagation] Using HYBRID mode (ITURHFProp + ionosonde correction)');
|
|
|
} else if (iturhfpropData) {
|
|
|
// ITURHFProp only (no ionosonde coverage)
|
|
|
hybridResult = {
|
|
|
bands: iturhfpropData.bands,
|
|
|
muf: iturhfpropData.muf,
|
|
|
model: 'ITU-R P.533-14 (ITURHFProp)'
|
|
|
};
|
|
|
console.log('[Propagation] Using ITURHFProp only (no ionosonde coverage)');
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// ===== FALLBACK: Built-in calculations =====
|
|
|
const bands = ['160m', '80m', '40m', '30m', '20m', '17m', '15m', '12m', '10m', '6m'];
|
|
|
const bandFreqs = [1.8, 3.5, 7, 10, 14, 18, 21, 24, 28, 50];
|
|
|
|
|
|
// Generate predictions (hybrid or fallback)
|
|
|
const effectiveIonoData = hasValidIonoData ? ionoData : null;
|
|
|
const predictions = {};
|
|
|
let currentBands;
|
|
|
|
|
|
if (hybridResult) {
|
|
|
// Use hybrid results for current bands
|
|
|
currentBands = bands.map((band, idx) => {
|
|
|
const hybridBand = hybridResult.bands?.[band];
|
|
|
if (hybridBand) {
|
|
|
return {
|
|
|
band,
|
|
|
freq: bandFreqs[idx],
|
|
|
reliability: hybridBand.reliability,
|
|
|
baseReliability: hybridBand.baseReliability,
|
|
|
snr: calculateSNR(hybridBand.reliability),
|
|
|
status: hybridBand.status,
|
|
|
corrected: hybridBand.correctionApplied
|
|
|
};
|
|
|
}
|
|
|
// Fallback for bands not in hybrid result
|
|
|
const reliability = calculateEnhancedReliability(
|
|
|
bandFreqs[idx], distance, midLat, midLon, currentHour, sfi, ssn, kIndex, de, dx, effectiveIonoData, currentHour
|
|
|
);
|
|
|
return {
|
|
|
band,
|
|
|
freq: bandFreqs[idx],
|
|
|
reliability: Math.round(reliability),
|
|
|
snr: calculateSNR(reliability),
|
|
|
status: getStatus(reliability)
|
|
|
};
|
|
|
}).sort((a, b) => b.reliability - a.reliability);
|
|
|
|
|
|
// Still generate 24-hour predictions using built-in (ITURHFProp hourly is too slow for real-time)
|
|
|
bands.forEach((band, idx) => {
|
|
|
const freq = bandFreqs[idx];
|
|
|
predictions[band] = [];
|
|
|
for (let hour = 0; hour < 24; hour++) {
|
|
|
const reliability = calculateEnhancedReliability(
|
|
|
freq, distance, midLat, midLon, hour, sfi, ssn, kIndex, de, dx, effectiveIonoData, currentHour
|
|
|
);
|
|
|
predictions[band].push({
|
|
|
hour,
|
|
|
reliability: Math.round(reliability),
|
|
|
snr: calculateSNR(reliability)
|
|
|
});
|
|
|
}
|
|
|
});
|
|
|
|
|
|
} else {
|
|
|
// Full fallback - use built-in calculations
|
|
|
console.log('[Propagation] Using FALLBACK mode (built-in calculations)');
|
|
|
|
|
|
bands.forEach((band, idx) => {
|
|
|
const freq = bandFreqs[idx];
|
|
|
predictions[band] = [];
|
|
|
for (let hour = 0; hour < 24; hour++) {
|
|
|
const reliability = calculateEnhancedReliability(
|
|
|
freq, distance, midLat, midLon, hour, sfi, ssn, kIndex, de, dx, effectiveIonoData, currentHour
|
|
|
);
|
|
|
predictions[band].push({
|
|
|
hour,
|
|
|
reliability: Math.round(reliability),
|
|
|
snr: calculateSNR(reliability)
|
|
|
});
|
|
|
}
|
|
|
});
|
|
|
|
|
|
currentBands = bands.map((band, idx) => ({
|
|
|
band,
|
|
|
freq: bandFreqs[idx],
|
|
|
reliability: predictions[band][currentHour].reliability,
|
|
|
snr: predictions[band][currentHour].snr,
|
|
|
status: getStatus(predictions[band][currentHour].reliability)
|
|
|
})).sort((a, b) => b.reliability - a.reliability);
|
|
|
}
|
|
|
|
|
|
// Calculate MUF and LUF
|
|
|
const currentMuf = hybridResult?.muf || calculateMUF(distance, midLat, midLon, currentHour, sfi, ssn, effectiveIonoData);
|
|
|
const currentLuf = calculateLUF(distance, midLat, currentHour, sfi, kIndex);
|
|
|
|
|
|
// Build ionospheric response
|
|
|
let ionosphericResponse;
|
|
|
if (hasValidIonoData) {
|
|
|
ionosphericResponse = {
|
|
|
foF2: ionoData.foF2?.toFixed(2),
|
|
|
mufd: ionoData.mufd?.toFixed(1),
|
|
|
hmF2: ionoData.hmF2?.toFixed(0),
|
|
|
source: ionoData.nearestStation || ionoData.source,
|
|
|
distance: ionoData.nearestDistance,
|
|
|
method: ionoData.method,
|
|
|
stationsUsed: ionoData.stationsUsed || 1
|
|
|
};
|
|
|
} else if (ionoData?.method === 'no-coverage') {
|
|
|
ionosphericResponse = {
|
|
|
source: 'No ionosonde coverage',
|
|
|
reason: ionoData.reason,
|
|
|
nearestStation: ionoData.nearestStation,
|
|
|
nearestDistance: ionoData.nearestDistance,
|
|
|
method: 'estimated'
|
|
|
};
|
|
|
} else {
|
|
|
ionosphericResponse = { source: 'model', method: 'estimated' };
|
|
|
}
|
|
|
|
|
|
// Determine data source description
|
|
|
let dataSource;
|
|
|
if (hybridResult && hasValidIonoData) {
|
|
|
dataSource = 'Hybrid: ITURHFProp (ITU-R P.533-14) + KC2G/GIRO ionosonde';
|
|
|
} else if (hybridResult) {
|
|
|
dataSource = 'ITURHFProp (ITU-R P.533-14)';
|
|
|
} else if (hasValidIonoData) {
|
|
|
dataSource = 'KC2G/GIRO Ionosonde Network';
|
|
|
} else {
|
|
|
dataSource = 'Estimated from solar indices';
|
|
|
}
|
|
|
|
|
|
res.json({
|
|
|
model: hybridResult?.model || 'Built-in estimation',
|
|
|
solarData: { sfi, ssn, kIndex },
|
|
|
ionospheric: ionosphericResponse,
|
|
|
muf: Math.round(currentMuf * 10) / 10,
|
|
|
luf: Math.round(currentLuf * 10) / 10,
|
|
|
distance: Math.round(distance),
|
|
|
currentHour,
|
|
|
currentBands,
|
|
|
hourlyPredictions: predictions,
|
|
|
hybrid: {
|
|
|
enabled: useHybrid,
|
|
|
iturhfpropAvailable: hybridResult !== null,
|
|
|
ionosondeAvailable: hasValidIonoData,
|
|
|
correctionFactor: hybridResult?.correction?.factor?.toFixed(2),
|
|
|
confidence: hybridResult?.correction?.confidence
|
|
|
},
|
|
|
dataSource
|
|
|
});
|
|
|
|
|
|
} catch (error) {
|
|
|
console.error('[Propagation] Error:', error.message);
|
|
|
res.status(500).json({ error: 'Failed to calculate propagation' });
|
|
|
}
|
|
|
});
|
|
|
|
|
|
// Legacy endpoint removed - merged into /api/propagation above
|
|
|
|
|
|
// Calculate MUF using real ionosonde data or model
|
|
|
function calculateMUF(distance, midLat, midLon, hour, sfi, ssn, ionoData) {
|
|
|
// If we have real MUF(3000) data, scale it for actual distance
|
|
|
if (ionoData?.mufd) {
|
|
|
// MUF scales with distance: MUF(d) ≈ MUF(3000) * sqrt(3000/d) for d < 3000km
|
|
|
// For d > 3000km, MUF(d) ≈ MUF(3000) * (1 + 0.1 * log(d/3000))
|
|
|
if (distance < 3000) {
|
|
|
return ionoData.mufd * Math.sqrt(distance / 3000);
|
|
|
} else {
|
|
|
return ionoData.mufd * (1 + 0.15 * Math.log10(distance / 3000));
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// If we have foF2, calculate MUF using M(3000)F2 factor
|
|
|
if (ionoData?.foF2) {
|
|
|
const M = ionoData.md || 3.0; // M(3000)F2 factor, typically 2.5-3.5
|
|
|
const muf3000 = ionoData.foF2 * M;
|
|
|
|
|
|
// Scale for actual distance
|
|
|
if (distance < 3000) {
|
|
|
return muf3000 * Math.sqrt(distance / 3000);
|
|
|
} else {
|
|
|
return muf3000 * (1 + 0.15 * Math.log10(distance / 3000));
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Fallback: Estimate foF2 from solar indices
|
|
|
// foF2 ≈ 0.9 * sqrt(SSN + 15) * diurnal_factor
|
|
|
const hourFactor = 1 + 0.4 * Math.cos((hour - 14) * Math.PI / 12); // Peak at 14:00 local
|
|
|
const latFactor = 1 - Math.abs(midLat) / 150; // Higher latitudes = lower foF2
|
|
|
const foF2_est = 0.9 * Math.sqrt(ssn + 15) * hourFactor * latFactor;
|
|
|
|
|
|
// Standard M(3000)F2 factor
|
|
|
const M = 3.0;
|
|
|
const muf3000 = foF2_est * M;
|
|
|
|
|
|
// Scale for distance
|
|
|
if (distance < 3000) {
|
|
|
return muf3000 * Math.sqrt(distance / 3000);
|
|
|
} else {
|
|
|
return muf3000 * (1 + 0.15 * Math.log10(distance / 3000));
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Calculate LUF (Lowest Usable Frequency) based on D-layer absorption
|
|
|
function calculateLUF(distance, midLat, hour, sfi, kIndex) {
|
|
|
// LUF increases with:
|
|
|
// - Higher solar flux (more D-layer ionization)
|
|
|
// - Daytime (D-layer forms during day)
|
|
|
// - Shorter paths (higher elevation angles = more time in D-layer)
|
|
|
// - Geomagnetic activity
|
|
|
|
|
|
// Local solar time at midpoint (approximate)
|
|
|
const localHour = hour; // Would need proper calculation with midLon
|
|
|
|
|
|
// Day/night factor: D-layer absorption is much higher during daytime
|
|
|
let dayFactor = 0.3; // Night
|
|
|
if (localHour >= 6 && localHour <= 18) {
|
|
|
// Daytime - peaks around noon
|
|
|
dayFactor = 0.5 + 0.5 * Math.cos((localHour - 12) * Math.PI / 6);
|
|
|
}
|
|
|
|
|
|
// Solar flux factor: higher SFI = more absorption
|
|
|
const sfiFactor = 1 + (sfi - 70) / 200;
|
|
|
|
|
|
// Distance factor: shorter paths have higher LUF (higher angles)
|
|
|
const distFactor = Math.max(0.5, 1 - distance / 10000);
|
|
|
|
|
|
// Latitude factor: polar paths have more absorption
|
|
|
const latFactor = 1 + Math.abs(midLat) / 90 * 0.5;
|
|
|
|
|
|
// K-index: geomagnetic storms increase absorption
|
|
|
const kFactor = 1 + kIndex * 0.1;
|
|
|
|
|
|
// Base LUF is around 2 MHz for long night paths
|
|
|
const baseLuf = 2.0;
|
|
|
|
|
|
return baseLuf * dayFactor * sfiFactor * distFactor * latFactor * kFactor;
|
|
|
}
|
|
|
|
|
|
// Enhanced reliability calculation using real ionosonde data
|
|
|
function calculateEnhancedReliability(freq, distance, midLat, midLon, hour, sfi, ssn, kIndex, de, dx, ionoData, currentHour) {
|
|
|
// Calculate MUF and LUF for this hour
|
|
|
// For non-current hours, we need to estimate how foF2 changes
|
|
|
let hourIonoData = ionoData;
|
|
|
|
|
|
if (ionoData && hour !== currentHour) {
|
|
|
// Estimate foF2 change based on diurnal variation
|
|
|
// foF2 typically varies by factor of 2-3 between day and night
|
|
|
const currentHourFactor = 1 + 0.4 * Math.cos((currentHour - 14) * Math.PI / 12);
|
|
|
const targetHourFactor = 1 + 0.4 * Math.cos((hour - 14) * Math.PI / 12);
|
|
|
const scaleFactor = targetHourFactor / currentHourFactor;
|
|
|
|
|
|
hourIonoData = {
|
|
|
...ionoData,
|
|
|
foF2: ionoData.foF2 * scaleFactor,
|
|
|
mufd: ionoData.mufd ? ionoData.mufd * scaleFactor : null
|
|
|
};
|
|
|
}
|
|
|
|
|
|
const muf = calculateMUF(distance, midLat, midLon, hour, sfi, ssn, hourIonoData);
|
|
|
const luf = calculateLUF(distance, midLat, hour, sfi, kIndex);
|
|
|
|
|
|
// Calculate reliability based on frequency position relative to MUF/LUF
|
|
|
let reliability = 0;
|
|
|
|
|
|
if (freq > muf * 1.1) {
|
|
|
// Well above MUF - very poor
|
|
|
reliability = Math.max(0, 30 - (freq - muf) * 5);
|
|
|
} else if (freq > muf) {
|
|
|
// Slightly above MUF - marginal (sometimes works due to scatter)
|
|
|
reliability = 30 + (muf * 1.1 - freq) / (muf * 0.1) * 20;
|
|
|
} else if (freq < luf * 0.8) {
|
|
|
// Well below LUF - absorbed
|
|
|
reliability = Math.max(0, 20 - (luf - freq) * 10);
|
|
|
} else if (freq < luf) {
|
|
|
// Near LUF - marginal
|
|
|
reliability = 20 + (freq - luf * 0.8) / (luf * 0.2) * 30;
|
|
|
} else {
|
|
|
// In usable range - calculate optimum
|
|
|
// Optimum Working Frequency (OWF) is typically 80-85% of MUF
|
|
|
const owf = muf * 0.85;
|
|
|
const range = muf - luf;
|
|
|
|
|
|
if (range <= 0) {
|
|
|
reliability = 30; // Very narrow window
|
|
|
} else {
|
|
|
// Higher reliability near OWF, tapering toward MUF and LUF
|
|
|
const position = (freq - luf) / range; // 0 at LUF, 1 at MUF
|
|
|
const optimalPosition = 0.75; // 75% up from LUF = OWF
|
|
|
|
|
|
if (position < optimalPosition) {
|
|
|
// Below OWF - reliability increases as we approach OWF
|
|
|
reliability = 50 + (position / optimalPosition) * 45;
|
|
|
} else {
|
|
|
// Above OWF - reliability decreases as we approach MUF
|
|
|
reliability = 95 - ((position - optimalPosition) / (1 - optimalPosition)) * 45;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// K-index degradation (geomagnetic storms)
|
|
|
if (kIndex >= 7) reliability *= 0.1;
|
|
|
else if (kIndex >= 6) reliability *= 0.2;
|
|
|
else if (kIndex >= 5) reliability *= 0.4;
|
|
|
else if (kIndex >= 4) reliability *= 0.6;
|
|
|
else if (kIndex >= 3) reliability *= 0.8;
|
|
|
|
|
|
// Very long paths (multiple hops) are harder
|
|
|
const hops = Math.ceil(distance / 3500);
|
|
|
if (hops > 1) {
|
|
|
reliability *= Math.pow(0.92, hops - 1); // ~8% loss per additional hop
|
|
|
}
|
|
|
|
|
|
// Polar path penalty (auroral absorption)
|
|
|
if (Math.abs(midLat) > 60) {
|
|
|
reliability *= 0.7;
|
|
|
if (kIndex >= 3) reliability *= 0.7; // Additional penalty during storms
|
|
|
}
|
|
|
|
|
|
// High bands need sufficient solar activity
|
|
|
if (freq >= 21 && sfi < 100) reliability *= Math.sqrt(sfi / 100);
|
|
|
if (freq >= 28 && sfi < 120) reliability *= Math.sqrt(sfi / 120);
|
|
|
if (freq >= 50 && sfi < 150) reliability *= Math.pow(sfi / 150, 1.5);
|
|
|
|
|
|
// Low bands work better at night
|
|
|
const localHour = (hour + midLon / 15 + 24) % 24;
|
|
|
const isNight = localHour < 6 || localHour > 18;
|
|
|
if (freq <= 7 && isNight) reliability *= 1.1;
|
|
|
if (freq <= 3.5 && !isNight) reliability *= 0.7;
|
|
|
|
|
|
return Math.min(99, Math.max(0, reliability));
|
|
|
}
|
|
|
|
|
|
// Convert reliability to estimated SNR
|
|
|
function calculateSNR(reliability) {
|
|
|
if (reliability >= 80) return '+20dB';
|
|
|
if (reliability >= 60) return '+10dB';
|
|
|
if (reliability >= 40) return '0dB';
|
|
|
if (reliability >= 20) return '-10dB';
|
|
|
return '-20dB';
|
|
|
}
|
|
|
|
|
|
// Get status label from reliability
|
|
|
function getStatus(reliability) {
|
|
|
if (reliability >= 70) return 'EXCELLENT';
|
|
|
if (reliability >= 50) return 'GOOD';
|
|
|
if (reliability >= 30) return 'FAIR';
|
|
|
if (reliability >= 15) return 'POOR';
|
|
|
return 'CLOSED';
|
|
|
}
|
|
|
|
|
|
// QRZ Callsign lookup (requires API key)
|
|
|
app.get('/api/qrz/lookup/:callsign', async (req, res) => {
|
|
|
const { callsign } = req.params;
|
|
|
// Note: QRZ requires an API key - this is a placeholder
|
|
|
res.json({
|
|
|
message: 'QRZ lookup requires API key configuration',
|
|
|
callsign: callsign.toUpperCase()
|
|
|
});
|
|
|
});
|
|
|
|
|
|
// ============================================
|
|
|
// CONTEST CALENDAR API
|
|
|
// ============================================
|
|
|
|
|
|
app.get('/api/contests', async (req, res) => {
|
|
|
// Try WA7BNM Contest Calendar RSS feed
|
|
|
try {
|
|
|
const controller = new AbortController();
|
|
|
const timeout = setTimeout(() => controller.abort(), 10000);
|
|
|
|
|
|
const response = await fetch('https://www.contestcalendar.com/calendar.rss', {
|
|
|
headers: {
|
|
|
'User-Agent': 'OpenHamClock/3.3',
|
|
|
'Accept': 'application/rss+xml, application/xml, text/xml'
|
|
|
},
|
|
|
signal: controller.signal
|
|
|
});
|
|
|
clearTimeout(timeout);
|
|
|
|
|
|
if (response.ok) {
|
|
|
const text = await response.text();
|
|
|
const contests = parseContestRSS(text);
|
|
|
|
|
|
if (contests.length > 0) {
|
|
|
console.log('[Contests] WA7BNM RSS:', contests.length, 'contests');
|
|
|
return res.json(contests);
|
|
|
}
|
|
|
}
|
|
|
} catch (error) {
|
|
|
if (error.name !== 'AbortError') {
|
|
|
console.error('[Contests] RSS error:', error.message);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Fallback: Use calculated contests
|
|
|
try {
|
|
|
const contests = calculateUpcomingContests();
|
|
|
console.log('[Contests] Using calculated:', contests.length, 'contests');
|
|
|
return res.json(contests);
|
|
|
} catch (error) {
|
|
|
console.error('[Contests] Calculation error:', error.message);
|
|
|
}
|
|
|
|
|
|
res.json([]);
|
|
|
});
|
|
|
|
|
|
// Parse WA7BNM RSS feed
|
|
|
function parseContestRSS(xml) {
|
|
|
const contests = [];
|
|
|
const now = new Date();
|
|
|
const currentYear = now.getFullYear();
|
|
|
|
|
|
// Simple regex-based XML parsing (no external dependencies)
|
|
|
const itemRegex = /<item>([\s\S]*?)<\/item>/g;
|
|
|
const titleRegex = /<title>([^<]+)<\/title>/;
|
|
|
const linkRegex = /<link>([^<]+)<\/link>/;
|
|
|
const descRegex = /<description>([^<]+)<\/description>/;
|
|
|
|
|
|
let match;
|
|
|
while ((match = itemRegex.exec(xml)) !== null) {
|
|
|
const item = match[1];
|
|
|
|
|
|
const titleMatch = item.match(titleRegex);
|
|
|
const linkMatch = item.match(linkRegex);
|
|
|
const descMatch = item.match(descRegex);
|
|
|
|
|
|
if (titleMatch && descMatch) {
|
|
|
const name = titleMatch[1].trim();
|
|
|
const desc = descMatch[1].trim();
|
|
|
const url = linkMatch ? linkMatch[1].trim() : null;
|
|
|
|
|
|
// Parse description like "1300Z, Jan 31 to 1300Z, Feb 1" or "0000Z-2359Z, Jan 31"
|
|
|
const parsed = parseContestDateTime(desc, currentYear);
|
|
|
|
|
|
if (parsed) {
|
|
|
const status = (now >= parsed.start && now <= parsed.end) ? 'active' : 'upcoming';
|
|
|
|
|
|
// Try to detect mode from contest name
|
|
|
let mode = 'Mixed';
|
|
|
const nameLower = name.toLowerCase();
|
|
|
if (nameLower.includes('cw') || nameLower.includes('morse')) mode = 'CW';
|
|
|
else if (nameLower.includes('ssb') || nameLower.includes('phone') || nameLower.includes('sideband')) mode = 'SSB';
|
|
|
else if (nameLower.includes('rtty')) mode = 'RTTY';
|
|
|
else if (nameLower.includes('ft4') || nameLower.includes('ft8') || nameLower.includes('digi')) mode = 'Digital';
|
|
|
else if (nameLower.includes('vhf') || nameLower.includes('uhf')) mode = 'VHF';
|
|
|
|
|
|
contests.push({
|
|
|
name,
|
|
|
start: parsed.start.toISOString(),
|
|
|
end: parsed.end.toISOString(),
|
|
|
mode,
|
|
|
status,
|
|
|
url
|
|
|
});
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Sort by start date and limit
|
|
|
contests.sort((a, b) => new Date(a.start) - new Date(b.start));
|
|
|
return contests.slice(0, 20);
|
|
|
}
|
|
|
|
|
|
// Parse contest date/time strings
|
|
|
function parseContestDateTime(desc, year) {
|
|
|
try {
|
|
|
const months = { 'jan': 0, 'feb': 1, 'mar': 2, 'apr': 3, 'may': 4, 'jun': 5,
|
|
|
'jul': 6, 'aug': 7, 'sep': 8, 'oct': 9, 'nov': 10, 'dec': 11 };
|
|
|
|
|
|
// Pattern 1: "1300Z, Jan 31 to 1300Z, Feb 1"
|
|
|
const rangeMatch = desc.match(/(\d{4})Z,\s*(\w+)\s+(\d+)\s+to\s+(\d{4})Z,\s*(\w+)\s+(\d+)/i);
|
|
|
if (rangeMatch) {
|
|
|
const [, startTime, startMon, startDay, endTime, endMon, endDay] = rangeMatch;
|
|
|
const startMonth = months[startMon.toLowerCase()];
|
|
|
const endMonth = months[endMon.toLowerCase()];
|
|
|
|
|
|
let startYear = year;
|
|
|
let endYear = year;
|
|
|
// Handle year rollover
|
|
|
if (startMonth > 10 && endMonth < 2) endYear = year + 1;
|
|
|
|
|
|
const start = new Date(Date.UTC(startYear, startMonth, parseInt(startDay),
|
|
|
parseInt(startTime.substring(0, 2)), parseInt(startTime.substring(2, 4))));
|
|
|
const end = new Date(Date.UTC(endYear, endMonth, parseInt(endDay),
|
|
|
parseInt(endTime.substring(0, 2)), parseInt(endTime.substring(2, 4))));
|
|
|
|
|
|
return { start, end };
|
|
|
}
|
|
|
|
|
|
// Pattern 2: "0000Z-2359Z, Jan 31" (same day)
|
|
|
const sameDayMatch = desc.match(/(\d{4})Z-(\d{4})Z,\s*(\w+)\s+(\d+)/i);
|
|
|
if (sameDayMatch) {
|
|
|
const [, startTime, endTime, mon, day] = sameDayMatch;
|
|
|
const month = months[mon.toLowerCase()];
|
|
|
|
|
|
const start = new Date(Date.UTC(year, month, parseInt(day),
|
|
|
parseInt(startTime.substring(0, 2)), parseInt(startTime.substring(2, 4))));
|
|
|
const end = new Date(Date.UTC(year, month, parseInt(day),
|
|
|
parseInt(endTime.substring(0, 2)), parseInt(endTime.substring(2, 4))));
|
|
|
|
|
|
// Handle overnight contests (end time < start time means next day)
|
|
|
if (end <= start) end.setUTCDate(end.getUTCDate() + 1);
|
|
|
|
|
|
return { start, end };
|
|
|
}
|
|
|
|
|
|
// Pattern 3: "0000Z-0100Z, Feb 5 and 0200Z-0300Z, Feb 6" (multiple sessions - use first)
|
|
|
const multiMatch = desc.match(/(\d{4})Z-(\d{4})Z,\s*(\w+)\s+(\d+)/i);
|
|
|
if (multiMatch) {
|
|
|
const [, startTime, endTime, mon, day] = multiMatch;
|
|
|
const month = months[mon.toLowerCase()];
|
|
|
|
|
|
const start = new Date(Date.UTC(year, month, parseInt(day),
|
|
|
parseInt(startTime.substring(0, 2)), parseInt(startTime.substring(2, 4))));
|
|
|
const end = new Date(Date.UTC(year, month, parseInt(day),
|
|
|
parseInt(endTime.substring(0, 2)), parseInt(endTime.substring(2, 4))));
|
|
|
|
|
|
if (end <= start) end.setUTCDate(end.getUTCDate() + 1);
|
|
|
|
|
|
return { start, end };
|
|
|
}
|
|
|
|
|
|
} catch (e) {
|
|
|
// Parse error, skip this contest
|
|
|
}
|
|
|
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
// Helper function to calculate upcoming contests
|
|
|
function calculateUpcomingContests() {
|
|
|
const now = new Date();
|
|
|
const contests = [];
|
|
|
|
|
|
// Major contest definitions with typical schedules
|
|
|
const majorContests = [
|
|
|
{ name: 'CQ WW DX CW', month: 10, weekend: -1, duration: 48, mode: 'CW' }, // Last full weekend Nov
|
|
|
{ name: 'CQ WW DX SSB', month: 9, weekend: -1, duration: 48, mode: 'SSB' }, // Last full weekend Oct
|
|
|
{ name: 'ARRL DX CW', month: 1, weekend: 3, duration: 48, mode: 'CW' }, // 3rd full weekend Feb
|
|
|
{ name: 'ARRL DX SSB', month: 2, weekend: 1, duration: 48, mode: 'SSB' }, // 1st full weekend Mar
|
|
|
{ name: 'CQ WPX SSB', month: 2, weekend: -1, duration: 48, mode: 'SSB' }, // Last full weekend Mar
|
|
|
{ name: 'CQ WPX CW', month: 4, weekend: -1, duration: 48, mode: 'CW' }, // Last full weekend May
|
|
|
{ name: 'IARU HF Championship', month: 6, weekend: 2, duration: 24, mode: 'Mixed' }, // 2nd full weekend Jul
|
|
|
{ name: 'ARRL Field Day', month: 5, weekend: 4, duration: 27, mode: 'Mixed' }, // 4th full weekend Jun
|
|
|
{ name: 'ARRL Sweepstakes CW', month: 10, weekend: 1, duration: 24, mode: 'CW' }, // 1st full weekend Nov
|
|
|
{ name: 'ARRL Sweepstakes SSB', month: 10, weekend: 3, duration: 24, mode: 'SSB' }, // 3rd full weekend Nov
|
|
|
{ name: 'ARRL 10m Contest', month: 11, weekend: 2, duration: 48, mode: 'Mixed' }, // 2nd full weekend Dec
|
|
|
{ name: 'ARRL RTTY Roundup', month: 0, weekend: 1, duration: 24, mode: 'RTTY' }, // 1st full weekend Jan
|
|
|
{ name: 'NA QSO Party CW', month: 0, weekend: 2, duration: 12, mode: 'CW' },
|
|
|
{ name: 'NA QSO Party SSB', month: 0, weekend: 3, duration: 12, mode: 'SSB' },
|
|
|
{ name: 'CQ 160m CW', month: 0, weekend: -1, duration: 42, mode: 'CW' }, // Last full weekend Jan
|
|
|
{ name: 'CQ 160m SSB', month: 1, weekend: -1, duration: 42, mode: 'SSB' }, // Last full weekend Feb
|
|
|
{ name: 'CQ WW RTTY', month: 8, weekend: -1, duration: 48, mode: 'RTTY' },
|
|
|
{ name: 'JIDX CW', month: 3, weekend: 2, duration: 48, mode: 'CW' },
|
|
|
{ name: 'JIDX SSB', month: 10, weekend: 2, duration: 48, mode: 'SSB' },
|
|
|
{ name: 'ARRL VHF Contest', month: 0, weekend: 3, duration: 33, mode: 'Mixed' }, // 3rd weekend Jan
|
|
|
{ name: 'ARRL June VHF', month: 5, weekend: 2, duration: 33, mode: 'Mixed' }, // 2nd weekend Jun
|
|
|
{ name: 'ARRL Sept VHF', month: 8, weekend: 2, duration: 33, mode: 'Mixed' }, // 2nd weekend Sep
|
|
|
{ name: 'Winter Field Day', month: 0, weekend: -1, duration: 24, mode: 'Mixed' }, // Last weekend Jan
|
|
|
{ name: 'CQWW WPX RTTY', month: 1, weekend: 2, duration: 48, mode: 'RTTY' }, // 2nd weekend Feb
|
|
|
{ name: 'Stew Perry Topband', month: 11, weekend: 4, duration: 14, mode: 'CW' }, // 4th weekend Dec
|
|
|
{ name: 'RAC Canada Day', month: 6, weekend: 1, duration: 24, mode: 'Mixed' }, // 1st weekend Jul
|
|
|
{ name: 'RAC Winter Contest', month: 11, weekend: -1, duration: 24, mode: 'Mixed' }, // Last weekend Dec
|
|
|
{ name: 'NAQP RTTY', month: 1, weekend: 4, duration: 12, mode: 'RTTY' }, // 4th weekend Feb
|
|
|
{ name: 'NAQP RTTY', month: 6, weekend: 3, duration: 12, mode: 'RTTY' }, // 3rd weekend Jul
|
|
|
];
|
|
|
|
|
|
// Weekly mini-contests (CWT, SST, etc.) - dayOfWeek: 0=Sun, 1=Mon, ... 6=Sat
|
|
|
const weeklyContests = [
|
|
|
{ name: 'CWT 1300z', dayOfWeek: 3, hour: 13, duration: 1, mode: 'CW' }, // Wednesday
|
|
|
{ name: 'CWT 1900z', dayOfWeek: 3, hour: 19, duration: 1, mode: 'CW' }, // Wednesday
|
|
|
{ name: 'CWT 0300z', dayOfWeek: 4, hour: 3, duration: 1, mode: 'CW' }, // Thursday
|
|
|
{ name: 'CWT 0700z', dayOfWeek: 4, hour: 7, duration: 1, mode: 'CW' }, // Thursday
|
|
|
{ name: 'NCCC Sprint', dayOfWeek: 5, hour: 3, minute: 30, duration: 0.5, mode: 'CW' }, // Friday
|
|
|
{ name: 'K1USN SST', dayOfWeek: 0, hour: 0, duration: 1, mode: 'CW' }, // Sunday 0000z (Sat evening US)
|
|
|
{ name: 'K1USN SST', dayOfWeek: 1, hour: 20, duration: 1, mode: 'CW' }, // Monday 2000z
|
|
|
{ name: 'ICWC MST', dayOfWeek: 1, hour: 13, duration: 1, mode: 'CW' }, // Monday 1300z
|
|
|
{ name: 'ICWC MST', dayOfWeek: 1, hour: 19, duration: 1, mode: 'CW' }, // Monday 1900z
|
|
|
{ name: 'ICWC MST', dayOfWeek: 2, hour: 3, duration: 1, mode: 'CW' }, // Tuesday 0300z
|
|
|
{ name: 'SKCC Sprint', dayOfWeek: 3, hour: 0, duration: 2, mode: 'CW' }, // Wednesday 0000z
|
|
|
{ name: 'QRP Fox Hunt', dayOfWeek: 3, hour: 2, duration: 1.5, mode: 'CW' }, // Wednesday 0200z
|
|
|
{ name: 'RTTY Weekday Sprint', dayOfWeek: 2, hour: 23, duration: 1, mode: 'RTTY' }, // Tuesday 2300z
|
|
|
];
|
|
|
|
|
|
// Calculate next occurrences of weekly contests
|
|
|
weeklyContests.forEach(contest => {
|
|
|
const next = new Date(now);
|
|
|
const currentDay = now.getUTCDay();
|
|
|
let daysUntil = contest.dayOfWeek - currentDay;
|
|
|
if (daysUntil < 0) daysUntil += 7;
|
|
|
if (daysUntil === 0) {
|
|
|
// Check if it's today but already passed
|
|
|
const todayStart = new Date(now);
|
|
|
todayStart.setUTCHours(contest.hour, contest.minute || 0, 0, 0);
|
|
|
if (now > todayStart) daysUntil = 7;
|
|
|
}
|
|
|
|
|
|
next.setUTCDate(now.getUTCDate() + daysUntil);
|
|
|
next.setUTCHours(contest.hour, contest.minute || 0, 0, 0);
|
|
|
|
|
|
const endTime = new Date(next.getTime() + contest.duration * 3600000);
|
|
|
|
|
|
contests.push({
|
|
|
name: contest.name,
|
|
|
start: next.toISOString(),
|
|
|
end: endTime.toISOString(),
|
|
|
mode: contest.mode,
|
|
|
status: (now >= next && now <= endTime) ? 'active' : 'upcoming'
|
|
|
});
|
|
|
});
|
|
|
|
|
|
// Calculate next occurrences of major contests
|
|
|
const year = now.getFullYear();
|
|
|
majorContests.forEach(contest => {
|
|
|
for (let y = year; y <= year + 1; y++) {
|
|
|
let startDate;
|
|
|
|
|
|
if (contest.weekend === -1) {
|
|
|
// Last weekend of month
|
|
|
startDate = getLastWeekendOfMonth(y, contest.month);
|
|
|
} else {
|
|
|
// Nth weekend of month
|
|
|
startDate = getNthWeekendOfMonth(y, contest.month, contest.weekend);
|
|
|
}
|
|
|
|
|
|
// Most contests start at 00:00 UTC Saturday
|
|
|
startDate.setUTCHours(0, 0, 0, 0);
|
|
|
const endDate = new Date(startDate.getTime() + contest.duration * 3600000);
|
|
|
|
|
|
if (endDate > now) {
|
|
|
const status = (now >= startDate && now <= endDate) ? 'active' : 'upcoming';
|
|
|
contests.push({
|
|
|
name: contest.name,
|
|
|
start: startDate.toISOString(),
|
|
|
end: endDate.toISOString(),
|
|
|
mode: contest.mode,
|
|
|
status: status
|
|
|
});
|
|
|
break; // Only add next occurrence
|
|
|
}
|
|
|
}
|
|
|
});
|
|
|
|
|
|
// Sort by start date
|
|
|
contests.sort((a, b) => new Date(a.start) - new Date(b.start));
|
|
|
|
|
|
return contests.slice(0, 15);
|
|
|
}
|
|
|
|
|
|
function getNthWeekendOfMonth(year, month, n) {
|
|
|
const date = new Date(Date.UTC(year, month, 1, 0, 0, 0));
|
|
|
let weekendCount = 0;
|
|
|
|
|
|
while (date.getUTCMonth() === month) {
|
|
|
if (date.getUTCDay() === 6) { // Saturday
|
|
|
weekendCount++;
|
|
|
if (weekendCount === n) return new Date(date);
|
|
|
}
|
|
|
date.setUTCDate(date.getUTCDate() + 1);
|
|
|
}
|
|
|
|
|
|
return date;
|
|
|
}
|
|
|
|
|
|
function getLastWeekendOfMonth(year, month) {
|
|
|
// Start from last day of month and work backwards
|
|
|
const date = new Date(Date.UTC(year, month + 1, 0)); // Last day of month
|
|
|
|
|
|
while (date.getUTCDay() !== 6) { // Find last Saturday
|
|
|
date.setUTCDate(date.getUTCDate() - 1);
|
|
|
}
|
|
|
|
|
|
return date;
|
|
|
}
|
|
|
|
|
|
// ============================================
|
|
|
// HEALTH CHECK
|
|
|
// ============================================
|
|
|
|
|
|
app.get('/api/health', (req, res) => {
|
|
|
res.json({
|
|
|
status: 'ok',
|
|
|
version: '3.3.0',
|
|
|
uptime: process.uptime(),
|
|
|
timestamp: new Date().toISOString()
|
|
|
});
|
|
|
});
|
|
|
|
|
|
// ============================================
|
|
|
// CONFIGURATION ENDPOINT
|
|
|
// ============================================
|
|
|
|
|
|
app.get('/api/config', (req, res) => {
|
|
|
res.json({
|
|
|
version: '3.0.0',
|
|
|
features: {
|
|
|
spaceWeather: true,
|
|
|
pota: true,
|
|
|
sota: true,
|
|
|
dxCluster: true,
|
|
|
satellites: false, // Coming soon
|
|
|
contests: false // Coming soon
|
|
|
},
|
|
|
refreshIntervals: {
|
|
|
spaceWeather: 300000,
|
|
|
pota: 60000,
|
|
|
sota: 60000,
|
|
|
dxCluster: 30000
|
|
|
}
|
|
|
});
|
|
|
});
|
|
|
|
|
|
// ============================================
|
|
|
// CATCH-ALL FOR SPA
|
|
|
// ============================================
|
|
|
|
|
|
app.get('*', (req, res) => {
|
|
|
res.sendFile(path.join(__dirname, 'public', 'index.html'));
|
|
|
});
|
|
|
|
|
|
// ============================================
|
|
|
// START SERVER
|
|
|
// ============================================
|
|
|
|
|
|
app.listen(PORT, () => {
|
|
|
console.log('');
|
|
|
console.log('╔═══════════════════════════════════════════════════════╗');
|
|
|
console.log('║ ║');
|
|
|
console.log('║ ██████╗ ██████╗ ███████╗███╗ ██╗ ║');
|
|
|
console.log('║ ██╔═══██╗██╔══██╗██╔════╝████╗ ██║ ║');
|
|
|
console.log('║ ██║ ██║██████╔╝█████╗ ██╔██╗ ██║ ║');
|
|
|
console.log('║ ██║ ██║██╔═══╝ ██╔══╝ ██║╚██╗██║ ║');
|
|
|
console.log('║ ╚██████╔╝██║ ███████╗██║ ╚████║ ║');
|
|
|
console.log('║ ╚═════╝ ╚═╝ ╚══════╝╚═╝ ╚═══╝ ║');
|
|
|
console.log('║ ║');
|
|
|
console.log('║ ██╗ ██╗ █████╗ ███╗ ███╗ ██████╗██╗ ██╗ ██╗ ║');
|
|
|
console.log('║ ██║ ██║██╔══██╗████╗ ████║██╔════╝██║ ██║ ██╔╝ ║');
|
|
|
console.log('║ ███████║███████║██╔████╔██║██║ ██║ █████╔╝ ║');
|
|
|
console.log('║ ██╔══██║██╔══██║██║╚██╔╝██║██║ ██║ ██╔═██╗ ║');
|
|
|
console.log('║ ██║ ██║██║ ██║██║ ╚═╝ ██║╚██████╗███████╗██║ ██╗ ║');
|
|
|
console.log('║ ╚═╝ ╚═╝╚═╝ ╚═╝╚═╝ ╚═╝ ╚═════╝╚══════╝╚═╝ ╚═╝ ║');
|
|
|
console.log('║ ║');
|
|
|
console.log('╚═══════════════════════════════════════════════════════╝');
|
|
|
console.log('');
|
|
|
console.log(` 🌐 Server running at http://localhost:${PORT}`);
|
|
|
console.log(' 📡 API proxy enabled for NOAA, POTA, SOTA, DX Cluster');
|
|
|
console.log(' 🖥️ Open your browser to start using OpenHamClock');
|
|
|
console.log('');
|
|
|
console.log(' In memory of Elwood Downey, WB0OEW');
|
|
|
console.log(' 73 de OpenHamClock contributors');
|
|
|
console.log('');
|
|
|
});
|
|
|
|
|
|
// Graceful shutdown
|
|
|
process.on('SIGTERM', () => {
|
|
|
console.log('SIGTERM received, shutting down gracefully');
|
|
|
process.exit(0);
|
|
|
});
|
|
|
|
|
|
process.on('SIGINT', () => {
|
|
|
console.log('\nShutting down...');
|
|
|
process.exit(0);
|
|
|
});
|
