1 files changed, 37 insertions, 25 deletions
diff --git a/src/components/ScheduleMonthLinks.astro b/src/components/ScheduleMonthLinks.astro
index adf3b32..61f1ae1 100644
--- a/src/components/ScheduleMonthLinks.astro
+++ b/src/components/ScheduleMonthLinks.astro
@@ -1,40 +1,52 @@
 ---
 // 月別・年度別アーカイブのリンク一覧。行事予定ページの下部に置く。
+// アーカイブは前々月以前の月だけ（前月以降はメインページに掲載している）。
 import {
-  fiscalYearKeys,
+  archiveFiscalYearKeys,
+  archiveMonthKeys,
   fiscalYearLabel,
   fiscalYearOf,
   monthCounts,
-  monthKeys,
   monthLabel,
 } from '@/lib/schedule-months';
 import { scheduleUrl } from '@/data/schedule/config';
 
-const groups = fiscalYearKeys.map((fy) => ({
+const groups = [...new Set(archiveMonthKeys.map((month) => fiscalYearOf(month)))].map((fy) => ({
   key: fy,
   label: fiscalYearLabel(fy),
-  months: monthKeys.filter((month) => fiscalYearOf(month) === fy),
+  hasPage: archiveFiscalYearKeys.includes(fy),
+  months: archiveMonthKeys.filter((month) => fiscalYearOf(month) === fy),
 }));
 ---
 
-<div class="schedule-archive">
-  {
-    groups.map((group) => (
-      <section class="schedule-archive-year">
-        <h3 class="schedule-archive-year-title">
-          <a href={scheduleUrl(`${group.key}/`)}>{group.label}の予定</a>
-        </h3>
-        <ul class="schedule-archive-months">
-          {group.months.map((key) => (
-            <li>
-              <a href={scheduleUrl(`${key}/`)}>
-                <span>{monthLabel(key)}</span>
-                <span class="schedule-archive-count">{monthCounts[key]}件</span>
-              </a>
-            </li>
-          ))}
-        </ul>
-      </section>
-    ))
-  }
-</div>
+{
+  groups.length === 0 ? (
+    <p class="schedule-archive-empty">
+      前々月より前に終了した予定はまだありません。月が進むと、ここに過去の予定が表示されます。
+    </p>
+  ) : (
+    <div class="schedule-archive">
+      {groups.map((group) => (
+        <section class="schedule-archive-year">
+          <h3 class="schedule-archive-year-title">
+            {group.hasPage ? (
+              <a href={scheduleUrl(`${group.key}/`)}>{group.label}の予定</a>
+            ) : (
+              group.label
+            )}
+          </h3>
+          <ul class="schedule-archive-months">
+            {group.months.map((key) => (
+              <li>
+                <a href={scheduleUrl(`${key}/`)}>
+                  <span>{monthLabel(key)}</span>
+                  <span class="schedule-archive-count">{monthCounts[key]}件</span>
+                </a>
+              </li>
+            ))}
+          </ul>
+        </section>
+      ))}
+    </div>
+  )
+}