feat: auto-select active or next trip by date

src/AppRoot.js

@@ -13,7 +13,7 @@ import ItemsTab from './tabs/ItemsTab';
 import CheckupTab from './tabs/CheckupTab';
 import HistoryTab from './tabs/HistoryTab';
 import { emptyData, STORAGE_KEY } from './constants';
-import { findActiveTripId, makeId, parseYMD, todayYMD } from './utils/date';
+import { findBestTripId, makeId, parseYMD, todayYMD } from './utils/date';
 import { styles } from './styles';
 
 const emptyTripForm = () => ({
@@ -148,8 +148,8 @@ export default function AppRoot() {
       return;
     }
 
-    const activeTripId = findActiveTripId(data.trips);
-    setSelectedTripId(activeTripId || data.trips[0].id);
+    const bestTripId = findBestTripId(data.trips);
+    setSelectedTripId(bestTripId || data.trips[0].id);
   }, [data.trips, selectedTripId, loaded]);
 
   useEffect(() => {

src/utils/date.js

@@ -23,3 +23,34 @@ export function findActiveTripId(trips) {
   });
   return active?.id || null;
 }
+
+export function findNextTripId(trips) {
+  const today = parseYMD(todayYMD());
+  if (!today) return null;
+
+  const next = trips
+    .map((trip) => ({ id: trip.id, start: parseYMD(trip.startDate) }))
+    .filter((trip) => !!trip.start && trip.start >= today)
+    .sort((a, b) => a.start - b.start)[0];
+
+  return next?.id || null;
+}
+
+export function findBestTripId(trips) {
+  const activeTripId = findActiveTripId(trips);
+  if (activeTripId) return activeTripId;
+
+  const nextTripId = findNextTripId(trips);
+  if (nextTripId) return nextTripId;
+
+  const latestPast = trips
+    .map((trip) => ({ id: trip.id, end: parseYMD(trip.endDate), start: parseYMD(trip.startDate) }))
+    .filter((trip) => !!trip.end || !!trip.start)
+    .sort((a, b) => {
+      const aTime = (a.end || a.start).getTime();
+      const bTime = (b.end || b.start).getTime();
+      return bTime - aTime;
+    })[0];
+
+  return latestPast?.id || null;
+}