Refactor/fix error handling, add query timeouts

handlers/npub.ts

@@ -1,22 +1,25 @@
 import { Context } from "@oak/oak";
 import { nip19 } from "@nostr/tools";
 import { lookupUsernameByPubkey } from "../directory.ts";
-import notFoundHandler from "../handlers/not-found.ts";
+import { notFoundHandler } from "../handlers/errors.ts";
 
 const npubHandler = async function (ctx: Context) {
   const npub = ctx.state.path;
+  let pubkey: string;
 
   try {
-    const pubkey = nip19.decode(npub).data as string;
-    const username = await lookupUsernameByPubkey(pubkey);
-
-    if (username) {
-      ctx.response.redirect(`/@${username}`);
-    } else {
-      notFoundHandler(ctx);
-    }
+    pubkey = nip19.decode(npub).data as string;
   } catch (_e) {
     notFoundHandler(ctx);
+    return;
+  }
+
+  const username = await lookupUsernameByPubkey(pubkey);
+
+  if (username) {
+    ctx.response.redirect(`/@${username}`);
+  } else {
+    notFoundHandler(ctx);
   }
 };