refactor from disgusting monolith

static/main.js

@@ -0,0 +1,44 @@
+let flakesStarted = false;
+
+async function loadSnow() {
+  if (!navigator.geolocation) return alert('Geolocation not supported');
+
+  navigator.geolocation.getCurrentPosition(async (pos) => {
+    const lat = pos.coords.latitude;
+    const lon = pos.coords.longitude;
+
+    const res = await fetch(`/api/snowfall?lat=${lat}&lon=${lon}`);
+    const data = await res.json();
+
+    document.getElementById('amount').textContent = data.inches + ' inches today';
+    document.getElementById('meta').textContent = data.location + ' • ' + data.today;
+
+    const percent = Math.min(data.inches / data.max_inches, 1);
+    document.getElementById('snowWrapper').style.height = (percent * 100) + '%';
+
+    const now = new Date();
+    document.getElementById('updated').textContent =
+      'Last updated: ' + now.toLocaleTimeString();
+
+    if (data.snowing && !flakesStarted) {
+      spawnSnowflakes();
+      flakesStarted = true;
+    }
+  });
+}
+
+function spawnSnowflakes() {
+  const container = document.getElementById('snowfall');
+  for (let i = 0; i < 90; i++) {
+    const flake = document.createElement('div');
+    flake.className = 'flake';
+    flake.style.left = Math.random()*100+'vw';
+    flake.style.animationDuration = 5+Math.random()*10+'s';
+    flake.style.opacity = Math.random();
+    flake.style.transform = `scale(${Math.random()+0.5})`;
+    container.appendChild(flake);
+  }
+}
+
+loadSnow();
+setInterval(loadSnow, 10*60*1000);