Refactor/fix error handling, add query timeouts

nostr.ts

@@ -1,4 +1,4 @@
-import { NPool, NRelay1 } from "@nostrify/nostrify";
+import { NostrEvent, NostrFilter, NPool, NRelay1 } from "@nostrify/nostrify";
 import { nip19 } from "@nostr/tools";
 import { lookupUsernameByPubkey } from "./directory.ts";
 import config from "./config.ts";
@@ -14,47 +14,57 @@ const relayPool = new NPool({
   eventRouter: async (_event) => [],
 });
 
+async function fetchWithTimeout(filters: NostrFilter[]) {
+  const timeoutPromise = new Promise((_, reject) =>
+    setTimeout(() => reject(new Error("relay timeout")), config.query_timeout)
+  );
+  const eventsPromise = relayPool.query(filters);
+
+  const events = await Promise.race([eventsPromise, timeoutPromise]);
+  return events;
+}
+
 export async function fetchReplaceableEvent(
   pubkey: string,
   identifier: string,
 ) {
-  let events = await relayPool.query([{
+  let events = await fetchWithTimeout([{
     authors: [pubkey],
     kinds: [30023],
     "#d": [identifier],
     limit: 1,
-  }]);
+  }]) as NostrEvent[];
 
   if (events.length > 0) {
     return events[0];
   } else {
-    events = await relayPool.query([{
+    events = await fetchWithTimeout([{
       authors: [pubkey],
       kinds: [30024],
       "#d": [identifier],
       limit: 1,
-    }]);
+    }]) as NostrEvent[];
 
     return events.length > 0 ? events[0] : null;
   }
 }
 
 export async function fetchArticlesByAuthor(pubkey: string) {
-  const events = await relayPool.query([{
+  const events = await fetchWithTimeout([{
     authors: [pubkey],
     kinds: [30023],
     limit: 10,
-  }]);
+  }]) as NostrEvent[];
 
   return events;
 }
 
 export async function fetchProfileEvent(pubkey: string) {
-  const events = await relayPool.query([{
+  const events = await fetchWithTimeout([{
     authors: [pubkey],
     kinds: [0],
     limit: 1,
-  }]);
+  }]) as NostrEvent[];
 
   return events.length > 0 ? events[0] : null;
 }