refactor: move url check to a separate function

src/utils/accounts.ts

@@ -0,0 +1,28 @@
+function sanitizeWebsite(website: string | undefined): string | undefined {
+  if (!website) return undefined;
+
+  if (
+    'https://'.includes(website) ||
+    'http://'.includes(website)
+  ) return undefined;
+
+  try {
+    // See if 'website' is a valid url
+    new URL(website);
+    return website;
+  } catch (_) {
+    try {
+      const websiteWithPrefix = 'https://' + website;
+      // 'website' could still be a valid url
+      // try adding a 'https' prefix to 'website'
+      new URL(websiteWithPrefix);
+
+      return websiteWithPrefix;
+    } catch (_) {
+      // 'website' is not a valid url even with 'https' prefix
+      return undefined;
+    }
+  }
+}
+
+export { sanitizeWebsite };

src/views/mastodon/accounts.ts

@@ -8,6 +8,7 @@ import { getLnurl } from '@/utils/lnurl.ts';
 import { nip05Cache } from '@/utils/nip05.ts';
 import { Nip05, nostrDate, nostrNow, parseNip05 } from '@/utils.ts';
 import { renderEmojis } from '@/views/mastodon/emojis.ts';
+import { sanitizeWebsite } from '@/utils/accounts.ts';
 
 interface ToAccountOpts {
   withSource?: boolean;
@@ -31,23 +32,6 @@ async function renderAccount(
     website,
   } = n.json().pipe(n.metadata()).catch({}).parse(event.content);
 
-  let websiteUrl;
-  try {
-    // See if 'website' is a valid url
-    new URL(website as string);
-    websiteUrl = website;
-  } catch (_) {
-    try {
-      // 'website' could still be a valid url
-      // try adding a 'https' prefix to 'website'
-      new URL('https' + website);
-      websiteUrl = 'https' + website;
-    } catch (_) {
-      // 'website' is not a valid url even with 'https' prefix
-      websiteUrl = '';
-    }
-  }
-
   const npub = nip19.npubEncode(pubkey);
   const parsed05 = await parseAndVerifyNip05(nip05, pubkey);
   const role = event.user?.tags.find(([name]) => name === 'role')?.[1] ?? 'user';
@@ -103,7 +87,7 @@ async function renderAccount(
       pubkey,
       lud16,
     },
-    website: websiteUrl,
+    website: sanitizeWebsite(website) ?? '',
   };
 }