feat: handle root _@ users on add counterpart

src/pages/create/index.tsx

@@ -246,17 +246,22 @@ export const CreatePage = () => {
     const input = userInput.toLowerCase()
 
     if (input.startsWith('npub')) {
-      const pubkey = npubToHex(input)
+      return handleAddNpubUser(input)
-      if (pubkey) {
-        addUser(pubkey)
-        setUserInput('')
-      } else {
-        setError('Provided npub is not valid. Please enter correct npub.')
-      }
-      return
     }
 
     if (input.includes('@')) {
+      return await handleAddNip05User(input)
+    }
+
+    // If the user enters the domain (w/o @) assume it's the "root" and append _@
+    // https://github.com/nostr-protocol/nips/blob/master/05.md#showing-just-the-domain-as-an-identifier
+    if (input.includes('.')) {
+      return await handleAddNip05User(`_@${input}`)
+    }
+
+    setError('Invalid input! Make sure to provide correct npub or nip05.')
+
+    async function handleAddNip05User(input: string) {
       setIsLoading(true)
       setLoadingSpinnerDesc('Querying for nip05')
       const nip05Profile = await queryNip05(input)
@@ -279,7 +284,16 @@ export const CreatePage = () => {
       return
     }
 
-    setError('Invalid input! Make sure to provide correct npub or nip05.')
+    function handleAddNpubUser(input: string) {
+      const pubkey = npubToHex(input)
+      if (pubkey) {
+        addUser(pubkey)
+        setUserInput('')
+      } else {
+        setError('Provided npub is not valid. Please enter correct npub.')
+      }
+      return
+    }
   }
 
   const handleUserRoleChange = (role: UserRole, pubkey: string) => {