mirror of
https://github.com/smittix/intercept.git
synced 2026-04-25 07:10:00 -07:00
a0604a43c0
- Globe view centers on ISS longitude so it's always visible - Added console logging for debugging position updates - Increased ISS marker size and glow for better visibility Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
767 lines
25 KiB
JavaScript
767 lines
25 KiB
JavaScript
/**
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* SSTV Mode
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* ISS Slow-Scan Television decoder interface
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*/
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const SSTV = (function() {
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// State
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let isRunning = false;
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let eventSource = null;
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let images = [];
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let currentMode = null;
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let progress = 0;
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let globeAnimationId = null;
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let issPosition = null;
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let issUpdateInterval = null;
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// ISS frequency
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const ISS_FREQ = 145.800;
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/**
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* Initialize the SSTV mode
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*/
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function init() {
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checkStatus();
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loadImages();
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loadLocationInputs();
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loadIssSchedule();
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initGlobe();
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startIssTracking();
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}
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/**
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* Load location into input fields
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*/
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function loadLocationInputs() {
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const latInput = document.getElementById('sstvObsLat');
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const lonInput = document.getElementById('sstvObsLon');
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const storedLat = localStorage.getItem('observerLat');
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const storedLon = localStorage.getItem('observerLon');
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if (latInput && storedLat) latInput.value = storedLat;
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if (lonInput && storedLon) lonInput.value = storedLon;
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// Add change handlers to save and refresh
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if (latInput) latInput.addEventListener('change', saveLocationFromInputs);
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if (lonInput) lonInput.addEventListener('change', saveLocationFromInputs);
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}
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/**
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* Save location from input fields
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*/
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function saveLocationFromInputs() {
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const latInput = document.getElementById('sstvObsLat');
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const lonInput = document.getElementById('sstvObsLon');
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const lat = parseFloat(latInput?.value);
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const lon = parseFloat(lonInput?.value);
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if (!isNaN(lat) && lat >= -90 && lat <= 90 &&
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!isNaN(lon) && lon >= -180 && lon <= 180) {
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localStorage.setItem('observerLat', lat.toString());
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localStorage.setItem('observerLon', lon.toString());
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loadIssSchedule(); // Refresh pass predictions
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}
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}
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/**
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* Use GPS to get location
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*/
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function useGPS(btn) {
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if (!navigator.geolocation) {
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showNotification('SSTV', 'GPS not available in this browser');
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return;
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}
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const originalText = btn.innerHTML;
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btn.innerHTML = '<span style="opacity: 0.7;">...</span>';
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btn.disabled = true;
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navigator.geolocation.getCurrentPosition(
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(pos) => {
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const latInput = document.getElementById('sstvObsLat');
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const lonInput = document.getElementById('sstvObsLon');
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const lat = pos.coords.latitude.toFixed(4);
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const lon = pos.coords.longitude.toFixed(4);
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if (latInput) latInput.value = lat;
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if (lonInput) lonInput.value = lon;
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localStorage.setItem('observerLat', lat);
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localStorage.setItem('observerLon', lon);
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btn.innerHTML = originalText;
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btn.disabled = false;
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showNotification('SSTV', 'Location updated from GPS');
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loadIssSchedule();
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},
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(err) => {
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btn.innerHTML = originalText;
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btn.disabled = false;
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let msg = 'Failed to get location';
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if (err.code === 1) msg = 'Location access denied';
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else if (err.code === 2) msg = 'Location unavailable';
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showNotification('SSTV', msg);
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},
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{ enableHighAccuracy: true, timeout: 10000 }
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);
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}
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/**
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* Update TLE data from CelesTrak
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*/
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async function updateTLE(btn) {
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const originalText = btn.innerHTML;
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btn.innerHTML = '<span style="opacity: 0.7;">Updating...</span>';
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btn.disabled = true;
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try {
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const response = await fetch('/satellite/update-tle', { method: 'POST' });
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const data = await response.json();
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if (data.status === 'success') {
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showNotification('SSTV', `TLE updated: ${data.updated?.length || 0} satellites`);
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loadIssSchedule(); // Refresh predictions with new TLE
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} else {
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showNotification('SSTV', data.message || 'TLE update failed');
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}
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} catch (err) {
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console.error('TLE update error:', err);
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showNotification('SSTV', 'Failed to update TLE');
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}
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btn.innerHTML = originalText;
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btn.disabled = false;
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}
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/**
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* Initialize 3D globe
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*/
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function initGlobe() {
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const canvas = document.getElementById('sstvGlobe');
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if (!canvas) return;
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renderGlobe();
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}
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/**
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* Start ISS position tracking
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*/
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function startIssTracking() {
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updateIssPosition();
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// Update every 5 seconds
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if (issUpdateInterval) clearInterval(issUpdateInterval);
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issUpdateInterval = setInterval(updateIssPosition, 5000);
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}
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/**
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* Stop ISS tracking
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*/
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function stopIssTracking() {
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if (issUpdateInterval) {
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clearInterval(issUpdateInterval);
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issUpdateInterval = null;
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}
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if (globeAnimationId) {
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cancelAnimationFrame(globeAnimationId);
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globeAnimationId = null;
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}
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}
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/**
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* Fetch current ISS position
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*/
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async function updateIssPosition() {
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const storedLat = localStorage.getItem('observerLat') || '51.5074';
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const storedLon = localStorage.getItem('observerLon') || '-0.1278';
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try {
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const url = `/sstv/iss-position?latitude=${storedLat}&longitude=${storedLon}`;
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const response = await fetch(url);
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const data = await response.json();
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if (data.status === 'ok') {
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issPosition = data;
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updateIssDisplay();
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renderGlobe();
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console.log('ISS position updated:', data.lat.toFixed(1), data.lon.toFixed(1));
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} else {
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console.warn('ISS position error:', data.message);
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}
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} catch (err) {
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console.error('Failed to get ISS position:', err);
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}
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}
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/**
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* Update ISS position display
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*/
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function updateIssDisplay() {
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if (!issPosition) return;
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const latEl = document.getElementById('sstvIssLat');
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const lonEl = document.getElementById('sstvIssLon');
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const altEl = document.getElementById('sstvIssAlt');
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if (latEl) latEl.textContent = issPosition.lat.toFixed(1) + '°';
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if (lonEl) lonEl.textContent = issPosition.lon.toFixed(1) + '°';
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if (altEl) altEl.textContent = Math.round(issPosition.altitude);
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}
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/**
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* Render 3D globe with ISS position - globe rotates to center on ISS
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*/
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function renderGlobe() {
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const canvas = document.getElementById('sstvGlobe');
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if (!canvas) return;
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const ctx = canvas.getContext('2d');
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const cx = canvas.width / 2;
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const cy = canvas.height / 2;
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const radius = Math.min(cx, cy) - 10;
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// Globe rotation - center on ISS longitude if available
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const globeRotation = issPosition ? -issPosition.lon : 0;
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// Clear canvas
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ctx.clearRect(0, 0, canvas.width, canvas.height);
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// Draw globe background
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const gradient = ctx.createRadialGradient(cx - radius * 0.3, cy - radius * 0.3, 0, cx, cy, radius);
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gradient.addColorStop(0, '#1a4a6e');
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gradient.addColorStop(0.5, '#0d2840');
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gradient.addColorStop(1, '#061520');
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ctx.beginPath();
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ctx.arc(cx, cy, radius, 0, Math.PI * 2);
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ctx.fillStyle = gradient;
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ctx.fill();
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// Draw latitude/longitude grid
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ctx.strokeStyle = 'rgba(0, 212, 255, 0.15)';
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ctx.lineWidth = 0.5;
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// Latitude lines
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for (let lat = -60; lat <= 60; lat += 30) {
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const y = cy - (lat / 90) * radius;
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const xRadius = Math.cos(lat * Math.PI / 180) * radius;
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ctx.beginPath();
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ctx.ellipse(cx, y, xRadius, xRadius * 0.3, 0, 0, Math.PI * 2);
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ctx.stroke();
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}
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// Longitude lines (rotated with globe)
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for (let lon = 0; lon < 180; lon += 30) {
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const rotatedLon = lon + globeRotation;
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const xScale = Math.cos(rotatedLon * Math.PI / 180);
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if (Math.abs(xScale) > 0.1) {
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ctx.beginPath();
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ctx.ellipse(cx, cy, Math.abs(xScale) * radius, radius, 0, 0, Math.PI * 2);
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ctx.stroke();
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}
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}
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// Draw ISS position - always visible since globe is centered on it
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if (issPosition) {
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const issLat = issPosition.lat;
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// ISS is always at center horizontally (globe rotated to it)
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const x = cx;
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const y = cy - (issLat / 90) * radius;
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// ISS glow
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const issGradient = ctx.createRadialGradient(x, y, 0, x, y, 20);
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issGradient.addColorStop(0, 'rgba(0, 212, 255, 0.9)');
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issGradient.addColorStop(0.4, 'rgba(0, 212, 255, 0.4)');
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issGradient.addColorStop(1, 'rgba(0, 212, 255, 0)');
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ctx.beginPath();
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ctx.arc(x, y, 20, 0, Math.PI * 2);
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ctx.fillStyle = issGradient;
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ctx.fill();
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// ISS dot
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ctx.beginPath();
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ctx.arc(x, y, 5, 0, Math.PI * 2);
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ctx.fillStyle = '#00d4ff';
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ctx.fill();
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ctx.strokeStyle = '#fff';
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ctx.lineWidth = 2;
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ctx.stroke();
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// ISS label
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ctx.fillStyle = '#00d4ff';
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ctx.font = 'bold 10px JetBrains Mono, monospace';
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ctx.textAlign = 'center';
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ctx.fillText('ISS', x, y - 15);
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}
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// Draw globe edge highlight
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ctx.beginPath();
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ctx.arc(cx, cy, radius, 0, Math.PI * 2);
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ctx.strokeStyle = 'rgba(0, 212, 255, 0.4)';
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ctx.lineWidth = 2;
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ctx.stroke();
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// Atmospheric glow
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const atmoGradient = ctx.createRadialGradient(cx, cy, radius - 5, cx, cy, radius + 10);
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atmoGradient.addColorStop(0, 'rgba(0, 212, 255, 0)');
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atmoGradient.addColorStop(0.6, 'rgba(0, 212, 255, 0.15)');
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atmoGradient.addColorStop(1, 'rgba(0, 212, 255, 0)');
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ctx.beginPath();
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ctx.arc(cx, cy, radius + 10, 0, Math.PI * 2);
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ctx.fillStyle = atmoGradient;
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ctx.fill();
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}
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/**
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* Check current decoder status
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*/
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async function checkStatus() {
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try {
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const response = await fetch('/sstv/status');
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const data = await response.json();
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if (!data.available) {
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updateStatusUI('unavailable', 'Decoder not installed');
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showStatusMessage('SSTV decoder not available. Install slowrx: apt install slowrx', 'warning');
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return;
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}
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if (data.running) {
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isRunning = true;
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updateStatusUI('listening', 'Listening...');
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startStream();
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} else {
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updateStatusUI('idle', 'Idle');
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}
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// Update image count
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updateImageCount(data.image_count || 0);
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} catch (err) {
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console.error('Failed to check SSTV status:', err);
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}
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}
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/**
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* Start SSTV decoder
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*/
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async function start() {
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const freqInput = document.getElementById('sstvFrequency');
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const deviceSelect = document.getElementById('sstvDevice');
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const frequency = parseFloat(freqInput?.value || ISS_FREQ);
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const device = parseInt(deviceSelect?.value || '0', 10);
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updateStatusUI('connecting', 'Starting...');
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try {
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const response = await fetch('/sstv/start', {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({ frequency, device })
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});
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const data = await response.json();
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if (data.status === 'started' || data.status === 'already_running') {
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isRunning = true;
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updateStatusUI('listening', `${frequency} MHz`);
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startStream();
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showNotification('SSTV', `Listening on ${frequency} MHz`);
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} else {
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updateStatusUI('idle', 'Start failed');
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showStatusMessage(data.message || 'Failed to start decoder', 'error');
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}
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} catch (err) {
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console.error('Failed to start SSTV:', err);
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updateStatusUI('idle', 'Error');
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showStatusMessage('Connection error: ' + err.message, 'error');
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}
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}
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/**
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* Stop SSTV decoder
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*/
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async function stop() {
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try {
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await fetch('/sstv/stop', { method: 'POST' });
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isRunning = false;
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stopStream();
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updateStatusUI('idle', 'Stopped');
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showNotification('SSTV', 'Decoder stopped');
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} catch (err) {
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console.error('Failed to stop SSTV:', err);
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}
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}
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/**
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* Update status UI elements
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*/
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function updateStatusUI(status, text) {
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const dot = document.getElementById('sstvStripDot');
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const statusText = document.getElementById('sstvStripStatus');
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const startBtn = document.getElementById('sstvStartBtn');
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const stopBtn = document.getElementById('sstvStopBtn');
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if (dot) {
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dot.className = 'sstv-strip-dot';
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if (status === 'listening' || status === 'detecting') {
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dot.classList.add('listening');
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} else if (status === 'decoding') {
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dot.classList.add('decoding');
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} else {
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dot.classList.add('idle');
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}
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}
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if (statusText) {
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statusText.textContent = text || status;
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}
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if (startBtn && stopBtn) {
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if (status === 'listening' || status === 'decoding') {
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startBtn.style.display = 'none';
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stopBtn.style.display = 'inline-block';
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} else {
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startBtn.style.display = 'inline-block';
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stopBtn.style.display = 'none';
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}
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}
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// Update live content area
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const liveContent = document.getElementById('sstvLiveContent');
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if (liveContent) {
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if (status === 'idle' || status === 'unavailable') {
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liveContent.innerHTML = renderIdleState();
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}
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}
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}
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/**
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* Render idle state HTML
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*/
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function renderIdleState() {
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return `
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<div class="sstv-idle-state">
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<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5">
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<rect x="3" y="3" width="18" height="18" rx="2"/>
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<circle cx="12" cy="12" r="3"/>
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<path d="M3 9h2M19 9h2M3 15h2M19 15h2"/>
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</svg>
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<h4>ISS SSTV Decoder</h4>
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<p>Click Start to listen for SSTV transmissions on 145.800 MHz</p>
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</div>
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`;
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}
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/**
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* Start SSE stream
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*/
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function startStream() {
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if (eventSource) {
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eventSource.close();
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}
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eventSource = new EventSource('/sstv/stream');
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eventSource.onmessage = (e) => {
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try {
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const data = JSON.parse(e.data);
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if (data.type === 'sstv_progress') {
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handleProgress(data);
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}
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} catch (err) {
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console.error('Failed to parse SSE message:', err);
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}
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};
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eventSource.onerror = () => {
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console.warn('SSTV SSE error, will reconnect...');
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setTimeout(() => {
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if (isRunning) startStream();
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}, 3000);
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};
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}
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/**
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* Stop SSE stream
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*/
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function stopStream() {
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if (eventSource) {
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eventSource.close();
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eventSource = null;
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}
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}
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/**
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* Handle progress update
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*/
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function handleProgress(data) {
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currentMode = data.mode || currentMode;
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progress = data.progress || 0;
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// Update status based on decode state
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if (data.status === 'decoding') {
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updateStatusUI('decoding', `Decoding ${currentMode || 'image'}...`);
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renderDecodeProgress(data);
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} else if (data.status === 'complete' && data.image) {
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// New image decoded
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images.unshift(data.image);
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updateImageCount(images.length);
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renderGallery();
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showNotification('SSTV', 'New image decoded!');
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updateStatusUI('listening', 'Listening...');
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} else if (data.status === 'detecting') {
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updateStatusUI('listening', data.message || 'Listening...');
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}
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}
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/**
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* Render decode progress in live area
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*/
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function renderDecodeProgress(data) {
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const liveContent = document.getElementById('sstvLiveContent');
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if (!liveContent) return;
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liveContent.innerHTML = `
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<div class="sstv-canvas-container">
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<canvas id="sstvCanvas" width="320" height="256"></canvas>
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</div>
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<div class="sstv-decode-info">
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<div class="sstv-mode-label">${data.mode || 'Detecting mode...'}</div>
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<div class="sstv-progress-bar">
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<div class="progress" style="width: ${data.progress || 0}%"></div>
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</div>
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<div class="sstv-status-message">${data.message || 'Decoding...'}</div>
|
|
</div>
|
|
`;
|
|
}
|
|
|
|
/**
|
|
* Load decoded images
|
|
*/
|
|
async function loadImages() {
|
|
try {
|
|
const response = await fetch('/sstv/images');
|
|
const data = await response.json();
|
|
|
|
if (data.status === 'ok') {
|
|
images = data.images || [];
|
|
updateImageCount(images.length);
|
|
renderGallery();
|
|
}
|
|
} catch (err) {
|
|
console.error('Failed to load SSTV images:', err);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Update image count display
|
|
*/
|
|
function updateImageCount(count) {
|
|
const countEl = document.getElementById('sstvImageCount');
|
|
const stripCount = document.getElementById('sstvStripImageCount');
|
|
|
|
if (countEl) countEl.textContent = count;
|
|
if (stripCount) stripCount.textContent = count;
|
|
}
|
|
|
|
/**
|
|
* Render image gallery
|
|
*/
|
|
function renderGallery() {
|
|
const gallery = document.getElementById('sstvGallery');
|
|
if (!gallery) return;
|
|
|
|
if (images.length === 0) {
|
|
gallery.innerHTML = `
|
|
<div class="sstv-gallery-empty">
|
|
<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
|
|
<rect x="3" y="3" width="18" height="18" rx="2"/>
|
|
<circle cx="8.5" cy="8.5" r="1.5"/>
|
|
<polyline points="21 15 16 10 5 21"/>
|
|
</svg>
|
|
<p>No images decoded yet</p>
|
|
</div>
|
|
`;
|
|
return;
|
|
}
|
|
|
|
gallery.innerHTML = images.map(img => `
|
|
<div class="sstv-image-card" onclick="SSTV.showImage('${escapeHtml(img.url)}')">
|
|
<img src="${escapeHtml(img.url)}" alt="SSTV Image" class="sstv-image-preview" loading="lazy">
|
|
<div class="sstv-image-info">
|
|
<div class="sstv-image-mode">${escapeHtml(img.mode || 'Unknown')}</div>
|
|
<div class="sstv-image-timestamp">${formatTimestamp(img.timestamp)}</div>
|
|
</div>
|
|
</div>
|
|
`).join('');
|
|
}
|
|
|
|
/**
|
|
* Load ISS pass schedule
|
|
*/
|
|
async function loadIssSchedule() {
|
|
// Try to get user's location from settings
|
|
const storedLat = localStorage.getItem('observerLat');
|
|
const storedLon = localStorage.getItem('observerLon');
|
|
|
|
// Check if location is actually set
|
|
const hasLocation = storedLat !== null && storedLon !== null;
|
|
const lat = storedLat || 51.5074;
|
|
const lon = storedLon || -0.1278;
|
|
|
|
try {
|
|
const response = await fetch(`/sstv/iss-schedule?latitude=${lat}&longitude=${lon}&hours=48`);
|
|
const data = await response.json();
|
|
|
|
if (data.status === 'ok' && data.passes && data.passes.length > 0) {
|
|
renderIssInfo(data.passes[0], hasLocation);
|
|
} else {
|
|
renderIssInfo(null, hasLocation);
|
|
}
|
|
} catch (err) {
|
|
console.error('Failed to load ISS schedule:', err);
|
|
renderIssInfo(null, hasLocation);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Render ISS pass info
|
|
*/
|
|
function renderIssInfo(nextPass, hasLocation = true) {
|
|
const container = document.getElementById('sstvIssInfo');
|
|
if (!container) return;
|
|
|
|
if (!nextPass) {
|
|
const locationMsg = hasLocation
|
|
? 'No passes in next 48 hours'
|
|
: 'Set location in Settings > Location tab';
|
|
const noteMsg = hasLocation
|
|
? 'Check ARISS.org for SSTV event schedules'
|
|
: 'Click the gear icon to open Settings';
|
|
|
|
container.innerHTML = `
|
|
<div class="sstv-iss-info">
|
|
<svg class="sstv-iss-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
|
|
<path d="M13 7L9 3 5 7l4 4"/>
|
|
<path d="m17 11 4 4-4 4-4-4"/>
|
|
<path d="m8 12 4 4 6-6-4-4-6 6"/>
|
|
</svg>
|
|
<div class="sstv-iss-details">
|
|
<div class="sstv-iss-label">Next ISS Pass</div>
|
|
<div class="sstv-iss-value">${locationMsg}</div>
|
|
<div class="sstv-iss-note">${noteMsg}</div>
|
|
</div>
|
|
</div>
|
|
`;
|
|
return;
|
|
}
|
|
|
|
container.innerHTML = `
|
|
<div class="sstv-iss-info">
|
|
<svg class="sstv-iss-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
|
|
<path d="M13 7L9 3 5 7l4 4"/>
|
|
<path d="m17 11 4 4-4 4-4-4"/>
|
|
<path d="m8 12 4 4 6-6-4-4-6 6"/>
|
|
</svg>
|
|
<div class="sstv-iss-details">
|
|
<div class="sstv-iss-label">Next ISS Pass</div>
|
|
<div class="sstv-iss-value">${nextPass.startTime} (${nextPass.maxEl}° max elevation)</div>
|
|
<div class="sstv-iss-note">Duration: ${nextPass.duration} min | Check ARISS.org for SSTV events</div>
|
|
</div>
|
|
</div>
|
|
`;
|
|
}
|
|
|
|
/**
|
|
* Show full-size image in modal
|
|
*/
|
|
function showImage(url) {
|
|
let modal = document.getElementById('sstvImageModal');
|
|
if (!modal) {
|
|
modal = document.createElement('div');
|
|
modal.id = 'sstvImageModal';
|
|
modal.className = 'sstv-image-modal';
|
|
modal.innerHTML = `
|
|
<button class="sstv-modal-close" onclick="SSTV.closeImage()">×</button>
|
|
<img src="" alt="SSTV Image">
|
|
`;
|
|
modal.addEventListener('click', (e) => {
|
|
if (e.target === modal) closeImage();
|
|
});
|
|
document.body.appendChild(modal);
|
|
}
|
|
|
|
modal.querySelector('img').src = url;
|
|
modal.classList.add('show');
|
|
}
|
|
|
|
/**
|
|
* Close image modal
|
|
*/
|
|
function closeImage() {
|
|
const modal = document.getElementById('sstvImageModal');
|
|
if (modal) modal.classList.remove('show');
|
|
}
|
|
|
|
/**
|
|
* Format timestamp for display
|
|
*/
|
|
function formatTimestamp(isoString) {
|
|
if (!isoString) return '--';
|
|
try {
|
|
const date = new Date(isoString);
|
|
return date.toLocaleString();
|
|
} catch {
|
|
return isoString;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Escape HTML for safe display
|
|
*/
|
|
function escapeHtml(text) {
|
|
if (!text) return '';
|
|
const div = document.createElement('div');
|
|
div.textContent = text;
|
|
return div.innerHTML;
|
|
}
|
|
|
|
/**
|
|
* Show status message
|
|
*/
|
|
function showStatusMessage(message, type) {
|
|
if (typeof showNotification === 'function') {
|
|
showNotification('SSTV', message);
|
|
} else {
|
|
console.log(`[SSTV ${type}] ${message}`);
|
|
}
|
|
}
|
|
|
|
// Public API
|
|
return {
|
|
init,
|
|
start,
|
|
stop,
|
|
loadImages,
|
|
loadIssSchedule,
|
|
showImage,
|
|
closeImage,
|
|
useGPS,
|
|
updateTLE,
|
|
stopIssTracking
|
|
};
|
|
})();
|
|
|
|
// Initialize when DOM is ready (will be called by selectMode)
|
|
document.addEventListener('DOMContentLoaded', function() {
|
|
// Initialization happens via selectMode when SSTV mode is activated
|
|
});
|