145 lines
4.8 KiB
HTML
145 lines
4.8 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>METAR Practice</title>
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<style>
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body {
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font-family: monospace;
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padding: 2em;
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}
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#metar-display {
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font-size: 1.2em;
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margin-bottom: 1em;
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min-height: 3em;
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}
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@media (max-width: 600px) {
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#metar-display {
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min-height: 6em;
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}
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}
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button {
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font-size: 1em;
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padding: 0.5em 1em;
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}
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</style>
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</head>
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<body>
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<div id="app">
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<h1>METAR Practice</h1>
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<div id="metar-display"></div>
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<button id="new-metar-btn">New METAR</button>
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</div>
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<script>
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const metarDisplay = document.getElementById('metar-display');
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const newMetarBtn = document.getElementById('new-metar-btn');
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const metars = [];
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function parseMetar(metarString) {
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const decoded = {};
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const parts = metarString.split(/\s+/).filter(Boolean);
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let index = 0;
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// Airport
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if (parts[index] && parts[index].length === 4 && parts[index].match(/^[A-Z][A-Z0-9]{3}$/)) {
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decoded.airport = parts[index++];
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} else {
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console.error('Failed to parse airport in:', metarString);
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}
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// Time
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if (parts[index] && parts[index].endsWith('Z')) {
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decoded.time = parts[index++];
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} else {
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console.error('Failed to parse time in:', metarString);
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}
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// AUTO
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if (parts[index] && parts[index] === 'AUTO') {
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decoded.auto = true;
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index++;
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}
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// Wind
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if (parts[index] && parts[index].endsWith('KT')) {
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decoded.wind = parts[index++];
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}
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// The rest is semi-ordered. Find remarks first.
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const remainingParts = parts.slice(index);
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const rmkIndex = remainingParts.indexOf('RMK');
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let mainParts = remainingParts;
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if (rmkIndex !== -1) {
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decoded.remarks = remainingParts.slice(rmkIndex + 1).join(' ');
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mainParts = remainingParts.slice(0, rmkIndex);
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}
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// Identify other parts from what's left.
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const cloudRegex = /^(SKC|CLR|FEW|SCT|BKN|OVC)(\d{3})?(CB|TCU)?$/;
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const tempDewRegex = /^(M?\d{2})\/(M?\d{2})$/;
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const altimeterRegex = /^A(\d{4})$/;
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decoded.weather = [];
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decoded.clouds = [];
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mainParts.forEach(part => {
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if (tempDewRegex.test(part)) {
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if (!decoded.temp_dew) decoded.temp_dew = part;
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} else if (altimeterRegex.test(part)) {
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if (!decoded.altimeter) decoded.altimeter = part;
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} else if (cloudRegex.test(part)) {
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decoded.clouds.push(part);
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} else if (part.endsWith('SM') && !decoded.visibility) {
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decoded.visibility = part;
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} else {
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decoded.weather.push(part);
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}
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});
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if (!decoded.altimeter) console.error('Failed to parse Altimeter in:', metarString);
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return decoded;
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}
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function displayNewMetar() {
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if (metars.length === 0) {
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metarDisplay.textContent = 'No METARs loaded.';
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return;
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}
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const randomIndex = Math.floor(Math.random() * metars.length);
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const metarString = metars[randomIndex];
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metarDisplay.textContent = metarString;
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const decodedMetar = parseMetar(metarString);
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console.log("Decoded METAR:", decodedMetar);
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}
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fetch('metars.txt')
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.then(response => response.text())
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.then(data => {
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const lines = data.split('\n');
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lines.forEach(line => {
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if (line.includes('METAR')) {
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const metarString = line.substring(line.indexOf('METAR') + 6).replace('=', '').trim();
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if (metarString) {
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metars.push(metarString);
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}
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}
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});
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console.log(`Loaded ${metars.length} METARs.`);
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displayNewMetar(); // Display initial METAR
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})
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.catch(error => {
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console.error('Error fetching or parsing metars.txt:', error)
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metarDisplay.textContent = 'Could not load METARs.';
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});
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newMetarBtn.addEventListener('click', displayNewMetar);
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</script>
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</body>
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</html>
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