Merge pull request #30 from griffemi/feat-compare-place-onadd

Compare: resolve location name immediately on add

static/compare.js

@@ -177,11 +177,30 @@ function loadPending(token) {
 function addLocation(lat, lon) {
   // Ignore a spot already on the list (same grid neighborhood).
   if (locations.some((l) => Math.abs(l.lat - lat) < 0.05 && Math.abs(l.lon - lon) < 0.05)) return;
-  locations.push({ lat, lon, name: null, series: null, loading: false, error: null });
+  const loc = { lat, lon, name: null, series: null, loading: false, error: null };
+  locations.push(loc);
   window.Thermograph.saveLastLocation(lat, lon);
   persistLocations();
   writeHashState();
   renderAll();   // pending → the Refresh button appears; no fetch until it's tapped
+  resolveName(loc);   // but resolve the neighborhood+city right away (before Refresh)
+}
+
+// Resolve just the place name for a freshly-added location, independent of its
+// (deferred, heavier) series load, so the chip flips from coordinates to the
+// neighborhood + city immediately on add. Best-effort — the series load resolves
+// the name too, so a failure here is harmless.
+async function resolveName(loc) {
+  try {
+    const res = await fetch(`api/v2/place?lat=${loc.lat}&lon=${loc.lon}`);
+    if (!res.ok) return;
+    const d = await res.json();
+    // Skip if the location was removed meanwhile, or already got named by a load.
+    if (!locations.includes(loc) || loc.name || !d || !d.place) return;
+    loc.name = d.place;
+    persistLocations();
+    renderAll();
+  } catch (e) { /* best-effort — the series load will still resolve the name */ }
 }
 
 function removeLocation(i) {