1 files changed, 54 insertions, 0 deletions
diff --git a/src/components/ScheduleInteractive.astro b/src/components/ScheduleInteractive.astro
index cb33ce9..129b38a 100644
--- a/src/components/ScheduleInteractive.astro
+++ b/src/components/ScheduleInteractive.astro
@@ -529,6 +529,59 @@
       });
     }
 
+    // 検索エンジン向けに、これからのイベントを構造化データ（JSON-LD）で出力する。
+    function emitEventStructuredData() {
+      const upcoming = entries
+        .filter((e) => e.type === 'event' && e.dates.some((d) => d >= todayKey))
+        .map((e) => {
+          const future = e.dates.filter((d) => d >= todayKey).sort();
+          const name = e.name.startsWith(e.category)
+            ? e.name.slice(e.category.length).trim()
+            : e.name;
+          const parts = e.time.split('／');
+          const venue = (parts[1] ?? '').trim();
+          return {
+            '@type': 'Event',
+            name,
+            startDate: future[0],
+            eventStatus: 'https://schema.org/EventScheduled',
+            eventAttendanceMode: 'https://schema.org/OfflineEventAttendanceMode',
+            location: {
+              '@type': 'Place',
+              name: venue || '小平市',
+              address: {
+                '@type': 'PostalAddress',
+                addressLocality: '東京都小平市',
+                addressCountry: 'JP',
+              },
+            },
+            description: e.time,
+            url: `https://yasutakeyohei.com/kodaira-data/hp-archive/schedule/#${e.rowId}`,
+          };
+        })
+        .sort((a, b) => a.startDate.localeCompare(b.startDate))
+        .slice(0, 40);
+
+      const existing = document.getElementById('schedule-event-ldjson');
+      if (existing) existing.remove();
+      if (upcoming.length === 0) return;
+
+      const script = document.createElement('script');
+      script.type = 'application/ld+json';
+      script.id = 'schedule-event-ldjson';
+      script.textContent = JSON.stringify({
+        '@context': 'https://schema.org',
+        '@type': 'ItemList',
+        name: '小平市のこれからのイベント',
+        itemListElement: upcoming.map((item, index) => ({
+          '@type': 'ListItem',
+          position: index + 1,
+          item,
+        })),
+      });
+      document.head.appendChild(script);
+    }
+
     // 件数はフィルターのボタンには出さず、ページ下部にまとめて表示する。
     function renderCategorySummary() {
       const summaryEl = document.getElementById('schedule-category-summary');
@@ -543,6 +596,7 @@
 
     buildFilters();
     renderCategorySummary();
+    emitEventStructuredData();
     applyFilter();
     renderCalendar();
     if (selectedDate) showDayDetails(selectedDate);