repeater prefixes

src/app/api/stats/repeater-prefixes/route.ts

@@ -0,0 +1,23 @@
+import { NextResponse } from "next/server";
+import { clickhouse } from "@/lib/clickhouse/clickhouse";
+
+export async function GET() {
+  try {
+    const query = `
+      SELECT 
+          substring(public_key, 1, 2) as prefix,
+          count() as node_count,
+          groupArray(node_name) as node_names
+      FROM meshcore_adverts_latest 
+      WHERE is_repeater = 1 
+          AND last_seen >= now() - INTERVAL 7 DAY
+      GROUP BY prefix
+      ORDER BY node_count DESC, prefix ASC
+    `;
+    const resultSet = await clickhouse.query({ query, format: 'JSONEachRow' });
+    const rows = await resultSet.json() as Array<{ prefix: string; node_count: number; node_names: string[] }>;
+    return NextResponse.json({ data: rows });
+  } catch (error) {
+    return NextResponse.json({ error: "Failed to fetch repeater prefixes" }, { status: 500 });
+  }
+} 

src/app/stats/page.tsx

@@ -7,19 +7,22 @@ export default function StatsPage() {
   const [totalNodes, setTotalNodes] = useState<number | null>(null);
   const [nodesOverTime, setNodesOverTime] = useState<any[]>([]);
   const [popularChannels, setPopularChannels] = useState<any[]>([]);
+  const [repeaterPrefixes, setRepeaterPrefixes] = useState<any[]>([]);
   const [loading, setLoading] = useState(true);
 
   useEffect(() => {
     async function fetchStats() {
       setLoading(true);
-      const [totalNodesRes, nodesOverTimeRes, popularChannelsRes] = await Promise.all([
+      const [totalNodesRes, nodesOverTimeRes, popularChannelsRes, repeaterPrefixesRes] = await Promise.all([
         fetch(buildApiUrl("/api/stats/total-nodes")).then(r => r.json()),
         fetch(buildApiUrl("/api/stats/nodes-over-time")).then(r => r.json()),
         fetch(buildApiUrl("/api/stats/popular-channels")).then(r => r.json()),
+        fetch(buildApiUrl("/api/stats/repeater-prefixes")).then(r => r.json()),
       ]);
       setTotalNodes(totalNodesRes.total_nodes ?? null);
       setNodesOverTime(nodesOverTimeRes.data ?? []);
       setPopularChannels(popularChannelsRes.data ?? []);
+      setRepeaterPrefixes(repeaterPrefixesRes.data ?? []);
       setLoading(false);
     }
     fetchStats();
@@ -83,6 +86,41 @@ export default function StatsPage() {
               </tbody>
             </table>
           </div>
+
+          <div className="mb-6">
+            <h2 className="text-lg font-semibold mb-2">Used Repeater Prefixes</h2>
+            <p className="text-sm text-gray-600 dark:text-gray-400 mb-3">
+              Shows repeater nodes grouped by the first byte of their public key, seen within the last 7 days.
+            </p>
+            <table className="w-full text-sm border">
+              <thead>
+                <tr>
+                  <th className="border px-2 py-1">Prefix</th>
+                  <th className="border px-2 py-1">Node Names</th>
+                </tr>
+              </thead>
+              <tbody>
+                {repeaterPrefixes.map((row, i) => (
+                  <tr key={i}>
+                    <td className="border px-2 py-1 font-mono">{row.prefix}</td>
+                    <td className="border px-2 py-1">
+                      {row.node_names && row.node_names.length > 0 ? (
+                        <div className="space-y-1">
+                          {row.node_names.map((name: string, j: number) => (
+                            <div key={j} className="text-xs">
+                              {name || 'Unnamed Node'}
+                            </div>
+                          ))}
+                        </div>
+                      ) : (
+                        <span className="text-gray-500">No named nodes</span>
+                      )}
+                    </td>
+                  </tr>
+                ))}
+              </tbody>
+            </table>
+          </div>
         </>
       )}
     </div>