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4918986 bd2cd87 4918986 7ec456b 4918986 a1deaca 4918986 bd2cd87 4918986 bd2cd87 4918986 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 | <!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>ECMWF Open Data – 4‑Day Point Forecast</title>
<link
rel="stylesheet"
href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css"
integrity="sha256-p4NxAoJBhIIN+hmNHrzRCf9tD/miZyoHS5obTRR9BMY="
crossorigin=""
/>
<style>
html, body { height: 100%; margin: 0; font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif; }
#app { display: grid; grid-template-columns: 1fr 420px; grid-template-rows: 100%; height: 100%; }
#map { height: 100%; }
#side { border-left: 1px solid #e2e8f0; padding: 12px; overflow: auto; }
h1 { font-size: 18px; margin: 0 0 8px; }
.muted { color: #64748b; font-size: 12px; }
.row { margin: 8px 0; }
button { background: #2563eb; color: white; border: 0; padding: 8px 10px; border-radius: 6px; cursor: pointer; }
button:disabled { opacity: 0.6; cursor: not-allowed; }
table { border-collapse: collapse; width: 100%; font-size: 12px; }
th, td { border-bottom: 1px solid #e5e7eb; padding: 4px 6px; text-align: right; }
th:first-child, td:first-child { text-align: left; position: sticky; left: 0; background: white; }
.small { font-size: 11px; }
.chip { display: inline-block; background: #eef2ff; color: #3730a3; padding: 2px 6px; border-radius: 999px; font-size: 11px; }
</style>
</head>
<body>
<div id="app">
<div id="map"></div>
<div id="side">
<h1>ECMWF 4‑Day Forecast</h1>
<div class="muted">Click anywhere on the map to get a point forecast (hourly up to 96h).</div>
<div class="row small">
<div>Location: <span id="loc">—</span></div>
<div>Source: <span id="src" class="chip">—</span></div>
</div>
<div class="row">
<button id="dl" disabled>Download JSON</button>
</div>
<div id="status" class="row muted"></div>
<div id="table-wrap" class="row"></div>
</div>
</div>
<script
src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"
integrity="sha256-20nQCchB9co0qIjJZRGuk2/Z9VM+kNiyxNV1lvTlZBo="
crossorigin=""
></script>
<script>
const map = L.map('map').setView([20, 0], 2);
L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
maxZoom: 6,
attribution: '© OpenStreetMap contributors'
}).addTo(map);
let marker = null;
const locEl = document.getElementById('loc');
const srcEl = document.getElementById('src');
const statusEl = document.getElementById('status');
const tableWrap = document.getElementById('table-wrap');
const dlBtn = document.getElementById('dl');
let lastPayload = null;
let statusTimer = null;
function fmt(n, d=2) { return (n === null || n === undefined) ? '—' : Number(n).toFixed(d); }
function fmtTime(t) { return t.replace('T', ' '); }
function buildTable(payload) {
const hours = payload.hours || [];
const data = payload.data || {};
const columns = ['time', '2t', '2d', '10u', '10v', 'msl', 'sp', 'tp', 'cp', 'sf', 'tcc', 'lcc', 'mcc', 'hcc', 'cape', 'cin', 'vis'];
const labels = {
'time': 'Time (UTC)', '2t':'2m T (°C)', '2d':'2m Td (°C)', '10u':'U10 (m/s)', '10v':'V10 (m/s)',
'msl':'MSLP (hPa)', 'sp':'Surf P (hPa)', 'tp':'Prec (mm)', 'cp':'Conv Prec (mm)', 'sf':'Snow (cm)',
'tcc':'Cloud %', 'lcc':'Low %', 'mcc':'Mid %', 'hcc':'High %', 'cape':'CAPE (J/kg)', 'cin':'CIN (J/kg)', 'vis':'Vis (m)'
};
// Convert units where sensible
const rows = hours.map((t, i) => {
const row = { time: fmtTime(t) };
row['2t'] = data['2t'] ? fmt(Number(data['2t'][i]), 1) : '—'; // °C
row['2d'] = data['2d'] ? fmt(Number(data['2d'][i]), 1) : '—'; // °C
row['10u'] = data['10u'] ? fmt(data['10u'][i], 1) : '—';
row['10v'] = data['10v'] ? fmt(data['10v'][i], 1) : '—';
const isOpenMeteo = (payload.source||'').includes('Open-Meteo');
row['msl'] = data['msl'] ? fmt(Number(data['msl'][i]) / (isOpenMeteo ? 1 : 100.0), 1) : '—';
row['sp'] = data['sp'] ? fmt(Number(data['sp'][i]) / (isOpenMeteo ? 1 : 100.0), 1) : '—';
row['tp'] = data['tp'] ? fmt(data['tp'][i], 2) : '—';
row['cp'] = data['cp'] ? fmt(data['cp'][i], 2) : '—';
row['sf'] = data['sf'] ? fmt(data['sf'][i], 2) : '—';
row['tcc'] = data['tcc'] ? fmt(data['tcc'][i], 0) : '—';
row['lcc'] = data['lcc'] ? fmt(data['lcc'][i], 0) : '—';
row['mcc'] = data['mcc'] ? fmt(data['mcc'][i], 0) : '—';
row['hcc'] = data['hcc'] ? fmt(data['hcc'][i], 0) : '—';
row['cape']= data['cape']? fmt(data['cape'][i], 0) : '—';
row['cin'] = data['cin'] ? fmt(data['cin'][i], 0) : '—';
row['vis'] = data['vis'] ? fmt(data['vis'][i], 0) : '—';
return row;
});
const available = columns.filter(c => c === 'time' || (data[c] && data[c].length));
const header = '<tr>' + available.map(c => `<th>${labels[c]||c}</th>`).join('') + '</tr>';
const body = rows.map(r => '<tr>' + available.map(c => `<td>${r[c]}</td>`).join('') + '</tr>').join('');
tableWrap.innerHTML = `<table>${header}${body}</table>`;
}
async function fetchForecast(lat, lon) {
statusEl.textContent = 'Fetching 4‑day forecast…';
dlBtn.disabled = true;
tableWrap.innerHTML = '';
try {
const r = await fetch(`/api/forecast?lat=${lat}&lon=${lon}`);
if (r.status === 202) {
statusEl.textContent = 'Cache warming… downloading ECMWF GRIB files. Please wait.';
return;
}
if (!r.ok) throw new Error(`HTTP ${r.status}`);
const payload = await r.json();
lastPayload = payload;
statusEl.textContent = `Received ${payload.hours?.length||0} hourly steps.`;
srcEl.textContent = payload.source || 'Unknown';
buildTable(payload);
dlBtn.disabled = false;
} catch (e) {
console.error(e);
statusEl.textContent = 'Failed to fetch forecast.';
}
}
async function pollStatus() {
try {
const r = await fetch('/api/status');
if (!r.ok) return;
const s = await r.json();
const ready = s.ready||0; const total = s.total||0; const mb = ((s.bytes||0)/1e6).toFixed(1);
if (total > 0) {
statusEl.textContent = `Cache: ${ready}/${total} steps ready (${mb} MB).`;
}
} catch {}
}
statusTimer = setInterval(pollStatus, 5000);
pollStatus();
map.on('click', (e) => {
const { lat, lng } = e.latlng;
if (marker) marker.remove();
marker = L.marker([lat, lng]).addTo(map);
locEl.textContent = `${lat.toFixed(4)}, ${lng.toFixed(4)}`;
fetchForecast(lat, lng);
});
dlBtn.addEventListener('click', () => {
if (!lastPayload) return;
const blob = new Blob([JSON.stringify(lastPayload, null, 2)], { type: 'application/json' });
const url = URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url;
a.download = `forecast_${(lastPayload.lat||0).toFixed(4)}_${(lastPayload.lon||0).toFixed(4)}.json`;
a.click();
URL.revokeObjectURL(url);
});
</script>
</body>
</html>
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