add support for local satellite relay

src/services/local-relay.ts

@@ -43,6 +43,8 @@ function createRelay() {
     } else if (safeRelayUrl(localRelayURL)) {
       return new Relay(safeRelayUrl(localRelayURL)!);
     }
+  } else if (window.satellite?.localRelay) {
+    return new Relay(window.satellite?.localRelay);
   } else if (window.CACHE_RELAY_ENABLED) {
     const protocol = location.protocol === "https:" ? "wss:" : "ws:";
     return new Relay(new URL(protocol + location.host + "/local-relay").toString());

src/types/satellite.d.ts

@@ -0,0 +1,5 @@
+interface Window {
+  satellite?: {
+    localRelay?: string;
+  };
+}

src/views/relays/cache/index.tsx

@@ -68,6 +68,30 @@ function NostrRelayTray() {
     </Card>
   );
 }
+function SatelliteRelay() {
+  const relay = window.satellite!.localRelay!;
+  const enabled = localRelay.url === relay;
+  const enable = () => {
+    localStorage.setItem("localRelay", relay);
+    location.reload();
+  };
+
+  return (
+    <Card borderColor={enabled ? "primary.500" : undefined} variant="outline">
+      <CardHeader p="4" display="flex" gap="2" alignItems="center">
+        <Heading size="md">Satellite Relay</Heading>
+        <Button size="sm" colorScheme="primary" ml="auto" onClick={enable} isDisabled={enabled}>
+          {enabled ? "Enabled" : "Enable"}
+        </Button>
+      </CardHeader>
+      <CardBody p="4" pt="0">
+        <Text mb="2">Your installation of noStrudel is setup with a local relay that can be used as a cache</Text>
+        <Text>Maximum capacity: Unknown</Text>
+        <Text>Performance: Unknown, but probably fast...</Text>
+      </CardBody>
+    </Card>
+  );
+}
 
 function HostedRelay() {
   const enabled = localRelay.url.includes(location.host + "/local-relay");
@@ -105,6 +129,7 @@ export default function CacheRelayView() {
       </Text>
       <InternalRelay />
       <NostrRelayTray />
+      {window.satellite?.localRelay && <SatelliteRelay />}
       {window.CACHE_RELAY_ENABLED && <HostedRelay />}
     </Flex>
   );