fix logic

explorer-v2/src/app/constants.ts

@@ -1 +1,7 @@
 export const TABLET_WIDTH = "(min-width:700px)";
+
+// import auto-picking function
+import { fetchRecommendedNodes } from "./lib/recommended";
+
+// export a promise that resolves to number[]
+export const RECOMMENDED_NODES = fetchRecommendedNodes();

explorer-v2/src/app/lib/recommended.ts

@@ -0,0 +1,33 @@
+// return the top 10 node_ids matching the constraints, computed at runtime.
+export async function fetchRecommendedNodes(): Promise<number[]> {
+  const url = "https://api.nym.spectredao.net/api/v1/nodes?size=3000";
+
+  const res = await fetch(url, { cache: "no-store" });
+  if (!res.ok) throw new Error(`Failed to fetch nodes: ${res.status}`);
+  const data: any[] = await res.json();
+
+  const MIN_STAKE = 50_000_000_000; // 50B
+
+  const filtered = data.filter((n) => {
+    const ws9000 = n?.description?.mixnet_websockets?.ws_port === 9000;
+    const wgOn = n?.description?.wireguard != null;
+    const pm = Number(n?.rewarding_details?.cost_params?.profit_margin_percent ?? "1");
+    const pmOk = !Number.isNaN(pm) && pm <= 0.2;
+
+    const role = n?.description?.declared_role ?? {};
+    const rolesOk = !!(role.entry && role.exit_ipr && role.exit_nr);
+
+    const stakeOk = Number(n?.total_stake ?? 0) > MIN_STAKE;
+
+    return ws9000 && wgOn && pmOk && rolesOk && stakeOk;
+  });
+
+  filtered.sort((a, b) => {
+    const ua = Number(a?.uptime ?? 0), ub = Number(b?.uptime ?? 0);
+    if (ub !== ua) return ub - ua; // uptime DESC
+    const sa = Number(a?.total_stake ?? 0), sb = Number(b?.total_stake ?? 0);
+    return sa - sb; // stake ASC
+  });
+
+  return filtered.slice(0, 10).map((n) => Number(n?.node_id));
+}