.

src/app/admin/page.tsx

@@ -29,10 +29,17 @@ import {
   Category,
   DashboardPostStat,
   DashboardRange,
+  DashboardTrafficPoint,
   PageMeta,
   Post,
 } from '@/types';
 
+const dashboardRangeDays: Record<DashboardRange, number> = {
+  '7d': 7,
+  '30d': 30,
+  '90d': 90,
+};
+
 const countCategories = (categories: Category[] = []): number => {
   return categories.reduce((count, category) => {
     return count + 1 + countCategories(category.children || []);
@@ -89,6 +96,46 @@ const toPostStat = (post: Post): DashboardPostStat => ({
   createdAt: post.createdAt,
 });
 
+const formatKstDateKey = (date: Date) => {
+  return new Intl.DateTimeFormat('sv-SE', {
+    timeZone: 'Asia/Seoul',
+    year: 'numeric',
+    month: '2-digit',
+    day: '2-digit',
+  }).format(date);
+};
+
+const getFallbackTraffic = (
+  posts: Post[],
+  range: DashboardRange,
+): DashboardTrafficPoint[] => {
+  const days = dashboardRangeDays[range];
+  const today = new Date();
+  const points = Array.from({ length: days }, (_, index) => {
+    const date = new Date(today);
+    date.setDate(today.getDate() - (days - 1 - index));
+
+    return {
+      date: formatKstDateKey(date),
+      views: 0,
+    };
+  });
+  const pointMap = new Map(points.map((point) => [point.date, point]));
+
+  posts.forEach((post) => {
+    const createdAt = new Date(post.createdAt);
+    if (Number.isNaN(createdAt.getTime())) return;
+
+    const dateKey = formatKstDateKey(createdAt);
+    const point = pointMap.get(dateKey);
+    if (!point) return;
+
+    point.views += post.viewCount;
+  });
+
+  return points;
+};
+
 function RecentPostRow({ post }: { post: Post }) {
   return (
     <Link
@@ -249,6 +296,11 @@ export default function AdminPage() {
     () => dashboard?.topPosts ?? (popularData?.content ?? []).map(toPostStat),
     [dashboard?.topPosts, popularData?.content],
   );
+  const fallbackTraffic = useMemo(
+    () => getFallbackTraffic([...(latestData?.content ?? []), ...(popularData?.content ?? [])], range),
+    [latestData?.content, popularData?.content, range],
+  );
+  const trafficPoints = dashboard?.traffic?.length ? dashboard.traffic : fallbackTraffic;
 
   return (
     <div className="space-y-8">
@@ -301,10 +353,10 @@ export default function AdminPage() {
       />
 
       <AdminDashboardTrafficChart
-        points={dashboard?.traffic ?? []}
+        points={trafficPoints}
         range={range}
         onRangeChange={setRange}
-        isFallback={isFallback}
+        isFallback={isFallback || !dashboard?.traffic?.length}
       />
 
       <div className="grid gap-6 xl:grid-cols-[1fr_0.8fr]">