feat: close relays

packages/app/src/Utils/Const.ts

@@ -160,3 +160,13 @@ export const MaxAboutLength = 1000;
  * Snort backend publishes rates
  */
 export const SnortPubkey = "npub1sn0rtcjcf543gj4wsg7fa59s700d5ztys5ctj0g69g2x6802npjqhjjtws";
+
+/**
+ * List of relay monitor relays
+ */
+export const MonitorRelays = [
+  "wss://relaypag.es",
+  "wss://relay.nostr.watch",
+  "wss://history.nostr.watch",
+  "wss://monitorlizard.nostr1.com",
+];

packages/app/src/Utils/index.ts

@@ -530,6 +530,22 @@ export function getCountry() {
   };
 }
 
+export function calculateDistance(lat1: number, lon1: number, lat2: number, lon2: number): number {
+  const R = 6371000; // Radius of the Earth in meters
+  const dLat = toRadians(lat2 - lat1);
+  const dLon = toRadians(lon2 - lon1);
+
+  const a =
+    Math.sin(dLat / 2) * Math.sin(dLat / 2) +
+    Math.cos(toRadians(lat1)) * Math.cos(toRadians(lat2)) * Math.sin(dLon / 2) * Math.sin(dLon / 2);
+  const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
+  return R * c;
+}
+
+function toRadians(degrees: number): number {
+  return degrees * (Math.PI / 180);
+}
+
 export function trackEvent(
   event: string,
   props?: Record<string, string | boolean>,