feat: close relays

packages/app/src/Components/Relay/Relay.tsx

@@ -2,12 +2,12 @@ import { Link } from "react-router-dom";
 
 import useRelayState from "@/Feed/RelayState";
 import useLogin from "@/Hooks/useLogin";
-import RelayUptime from "@/Pages/settings/relays/uptime";
 import { getRelayName } from "@/Utils";
 
 import Icon from "../Icons/Icon";
 import RelayPermissions from "./permissions";
 import RelayStatusLabel from "./status-label";
+import RelayUptime from "./uptime";
 
 export interface RelayProps {
   addr: string;

packages/app/src/Components/Relay/uptime.tsx

@@ -1,20 +1,13 @@
 import { sanitizeRelayUrl, unixNow } from "@snort/shared";
 import { EventKind, RequestBuilder } from "@snort/system";
 import { useRequestBuilder } from "@snort/system-react";
-import classNames from "classnames";
 import { useMemo } from "react";
-import { FormattedMessage } from "react-intl";
 
 import { findTag } from "@/Utils";
-import { Day } from "@/Utils/Const";
+import { Day, MonitorRelays } from "@/Utils/Const";
+
 import UptimeLabel from "./uptime-label";
 
-const MonitorRelays = [
-  "wss://relaypag.es",
-  "wss://relay.nostr.watch",
-  "wss://history.nostr.watch",
-  "wss://monitorlizard.nostr1.com",
-];
 export default function RelayUptime({ url }: { url: string }) {
   const sub = useMemo(() => {
     const u = sanitizeRelayUrl(url);

packages/app/src/Hooks/useCloseRelays.ts

@@ -0,0 +1,67 @@
+import { unixNow } from "@snort/shared";
+import { EventKind, NostrEvent, RequestBuilder } from "@snort/system";
+import { useRequestBuilder } from "@snort/system-react";
+import Geohash from "latlon-geohash";
+import { useMemo } from "react";
+
+import { calculateDistance, findTag, getCountry } from "@/Utils";
+import { Day, MonitorRelays } from "@/Utils/Const";
+
+interface RelayDistance {
+  distance: number;
+  event: NostrEvent;
+  addr: string;
+}
+
+export function useCloseRelays() {
+  const country = getCountry();
+
+  const sub = useMemo(() => {
+    const geoHash = Geohash.encode(country.lat, country.lon);
+    const geoHashes = [];
+    for (let x = 2; x < geoHash.length; x++) {
+      geoHashes.push(geoHash.substring(0, x));
+    }
+    const rb = new RequestBuilder(`close-relays:${country}`);
+    rb.withFilter()
+      .kinds([30_166 as EventKind])
+      .tag("g", geoHashes)
+      .since(unixNow() - Day)
+      .relay(MonitorRelays);
+    return rb;
+  }, [country]);
+
+  const data = useRequestBuilder(sub);
+
+  const distRelays = data
+    .map(a => {
+      const lowestDistance = a.tags
+        .filter(a => a[0] === "g" && a[1].length > 5)
+        .map(a => {
+          const g = Geohash.decode(a[1]);
+          return calculateDistance(g.lat, g.lon, country.lat, country.lon);
+        })
+        .reduce((acc, v) => (v < acc ? v : acc), Number.MAX_VALUE);
+      return {
+        distance: lowestDistance,
+        event: a,
+        addr: findTag(a, "d") ?? "",
+      } as RelayDistance;
+    })
+    .sort((a, b) => (b.distance < a.distance ? 1 : -1))
+    .reduce((acc, v) => {
+      const u = new URL(v.addr);
+      if (!acc.has(u.hostname)) {
+        acc.set(u.hostname, {
+          ...v,
+          addr: `${u.protocol}//${u.host}/`,
+        });
+      }
+      if (acc.get(u.hostname)!.distance > v.distance) {
+        acc.set(u.hostname, v);
+      }
+      return acc;
+    }, new Map<string, RelayDistance>());
+
+  return [...distRelays.values()];
+}

packages/app/src/Pages/settings/RelayInfo.tsx

@@ -11,12 +11,11 @@ import RelayPermissions from "@/Components/Relay/permissions";
 import { RelayFavicon } from "@/Components/Relay/RelaysMetadata";
 import RelaySoftware from "@/Components/Relay/software";
 import RelayStatusLabel from "@/Components/Relay/status-label";
+import RelayUptime from "@/Components/Relay/uptime";
 import ProfileImage from "@/Components/User/ProfileImage";
 import useRelayState from "@/Feed/RelayState";
 import { getRelayName, parseId } from "@/Utils";
 
-import RelayUptime from "./relays/uptime";
-
 const RelayInfo = () => {
   const params = useParams();
   const [info, setInfo] = useState<RI>();

packages/app/src/Pages/settings/relays/discover.tsx

@@ -1,19 +1,21 @@
+/* eslint-disable max-lines */
 import { dedupe, removeUndefined, sanitizeRelayUrl } from "@snort/shared";
 import { OutboxModel } from "@snort/system";
 import { SnortContext } from "@snort/system-react";
 import { useContext, useMemo, useSyncExternalStore } from "react";
-import { FormattedMessage } from "react-intl";
+import { FormattedMessage, FormattedNumber } from "react-intl";
 import { Link } from "react-router-dom";
 
 import { RelayMetrics } from "@/Cache";
 import AsyncButton from "@/Components/Button/AsyncButton";
 import { CollapsedSection } from "@/Components/Collapsed";
 import { RelayFavicon } from "@/Components/Relay/RelaysMetadata";
+import RelayUptime from "@/Components/Relay/uptime";
+import UptimeLabel from "@/Components/Relay/uptime-label";
 import useLogin from "@/Hooks/useLogin";
 import { getRelayName } from "@/Utils";
-
-import RelayUptime from "./uptime";
-import UptimeLabel from "./uptime-label";
+import { useCloseRelays } from "@/Hooks/useCloseRelays";
+import Uptime from "@/Components/Relay/uptime";
 
 export function DiscoverRelays() {
   const { follows, relays, state } = useLogin(l => ({
@@ -56,6 +58,7 @@ export function DiscoverRelays() {
     [relays, metrics],
   );
 
+  const closeRelays = useCloseRelays();
   return (
     <div className="flex flex-col gap-4">
       <CollapsedSection
@@ -161,6 +164,68 @@ export function DiscoverRelays() {
           </tbody>
         </table>
       </CollapsedSection>
+
+      <CollapsedSection
+        title={
+          <div className="text-xl">
+            <FormattedMessage defaultMessage="Close Relays" />
+          </div>
+        }>
+        <small>
+          <FormattedMessage defaultMessage="Relays close to your geographic location." />
+        </small>
+        <table className="table">
+          <thead>
+            <tr className="text-gray-light uppercase">
+              <th>
+                <FormattedMessage defaultMessage="Relay" description="Relay name (URL)" />
+              </th>
+              <th>
+                <FormattedMessage defaultMessage="Distance" />
+              </th>
+              <th>
+                <FormattedMessage defaultMessage="Uptime" />
+              </th>
+              <th></th>
+            </tr>
+          </thead>
+          <tbody>
+            {closeRelays
+              .filter(a => !isNaN(a.distance))
+              .slice(0, 100)
+              .map(a => (
+                <tr key={a.addr}>
+                  <td title={a.addr}>
+                    <Link to={`/settings/relays/${encodeURIComponent(a.addr)}`} className="flex gap-2 items-center">
+                      <RelayFavicon url={a.addr} />
+                      {getRelayName(a.addr)}
+                    </Link>
+                  </td>
+                  <td className="text-center">
+                    <FormattedMessage
+                      defaultMessage="{n} km"
+                      values={{
+                        n: <FormattedNumber value={a.distance / 1000} maximumFractionDigits={0} />,
+                      }}
+                    />
+                  </td>
+                  <td className="text-center">
+                    <Uptime url={a.addr} />
+                  </td>
+                  <td className="text-end">
+                    <AsyncButton
+                      className="!py-1 mb-1"
+                      onClick={async () => {
+                        await state.addRelay(a.addr, { read: true, write: true });
+                      }}>
+                      <FormattedMessage defaultMessage="Add" />
+                    </AsyncButton>
+                  </td>
+                </tr>
+              ))}
+          </tbody>
+        </table>
+      </CollapsedSection>
     </div>
   );
 }

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>,

packages/app/src/lang.json

@@ -333,6 +333,9 @@
   "7hp70g": {
     "defaultMessage": "NIP-05"
   },
+  "7pFGAQ": {
+    "defaultMessage": "Close Relays"
+  },
   "8/vBbP": {
     "defaultMessage": "Reposts ({n})"
   },
@@ -952,6 +955,9 @@
   "P7nJT9": {
     "defaultMessage": "Total today (UTC): {amount} sats"
   },
+  "P8JC58": {
+    "defaultMessage": "Distance"
+  },
   "PCSt5T": {
     "defaultMessage": "Preferences"
   },
@@ -1051,6 +1057,9 @@
   "StKzTE": {
     "defaultMessage": "The author has marked this note as a <i>sensitive topic</i>"
   },
+  "T83nqf": {
+    "defaultMessage": "Relays close to your geographic location."
+  },
   "TDR5ge": {
     "defaultMessage": "Media in notes will automatically be shown for selected people, otherwise only the link will show"
   },
@@ -1256,6 +1265,9 @@
   "aWpBzj": {
     "defaultMessage": "Show more"
   },
+  "abbGKq": {
+    "defaultMessage": "{n} km"
+  },
   "b12Goz": {
     "defaultMessage": "Mnemonic"
   },

packages/app/src/translations/en.json

@@ -110,6 +110,7 @@
   "7UOvbT": "Offline",
   "7YkSA2": "Community Leader",
   "7hp70g": "NIP-05",
+  "7pFGAQ": "Close Relays",
   "8/vBbP": "Reposts ({n})",
   "89q5wc": "Confirm Reposts",
   "8BDFvJ": "Conventions for clients' use of e and p tags in text events",
@@ -315,6 +316,7 @@
   "P61BTu": "Copy Event JSON",
   "P7FD0F": "System (Default)",
   "P7nJT9": "Total today (UTC): {amount} sats",
+  "P8JC58": "Distance",
   "PCSt5T": "Preferences",
   "PXQ0z0": "Receiving to <b>{wallet}</b>",
   "PamNxw": "Unknown file header: {name}",
@@ -348,6 +350,7 @@
   "SmuYUd": "What should we call you?",
   "Ss0sWu": "Pay Now",
   "StKzTE": "The author has marked this note as a <i>sensitive topic</i>",
+  "T83nqf": "Relays close to your geographic location.",
   "TDR5ge": "Media in notes will automatically be shown for selected people, otherwise only the link will show",
   "TH1fFo": "Telegram",
   "TJo5E6": "Preview",
@@ -416,6 +419,7 @@
   "aRex7h": "Paid {amount} sats, fee {fee} sats",
   "aSGz4J": "Connect to your own LND node with Lightning Node Connect",
   "aWpBzj": "Show more",
+  "abbGKq": "{n} km",
   "b12Goz": "Mnemonic",
   "b5vAk0": "Your handle will act like a lightning address and will redirect to your chosen LNURL or Lightning address",
   "bF1MYT": "You are a community leader and are earning <b>{percent}</b> of referred users subscriptions!",