fix: login with hex key does not work, missing proper error when nsec or private key is wrong

src/pages/login/index.tsx

@@ -20,6 +20,7 @@ import { LoginMethods } from '../../store/auth/types'
 import { Dispatch } from '../../store/store'
 import { npubToHex, queryNip05 } from '../../utils'
 import styles from './style.module.scss'
+import { hexToBytes } from '@noble/hashes/utils'
 
 export const Login = () => {
   const [searchParams] = useSearchParams()
@@ -92,9 +93,24 @@ export const Login = () => {
       })
   }
 
-  const loginWithNsec = async () => {
-    const nsec = inputValue
-    const privateKey = nip19.decode(nsec).data as Uint8Array
+  /**
+   * Login with NSEC or HEX private key
+   * @param privateKey in HEX format
+   */
+  const loginWithNsec = async (privateKey?: Uint8Array) => {
+    let nsec = ''
+
+    if (privateKey) {
+      nsec = nip19.nsecEncode(privateKey)
+    } else {
+      nsec = inputValue
+
+      try {
+        privateKey = nip19.decode(nsec).data as Uint8Array
+      } catch(err) {
+        toast.error(`Error decoding the nsec. ${err}`)
+      }
+    }
 
     if (!privateKey) {
       toast.error(
@@ -307,7 +323,19 @@ export const Login = () => {
       return loginWithNsecBunker()
     }
 
-    toast.error('Invalid Input!')
+    // Check if maybe hex nsec
+    try {
+      // const privateKey = nip19.decode(inputValue).data as Uint8Array
+      const privateKey = hexToBytes(inputValue)
+      const publickey = getPublicKey(privateKey)
+      
+      if (publickey) return loginWithNsec(privateKey)
+
+    } catch(err) {
+      console.warn('err', err)
+    }
+
+    toast.error('Invalid format, please use: private key (hex), nsec..., bunker:// or nip05 format.')
     return
   }
 
@@ -329,7 +357,7 @@ export const Login = () => {
         <Typography variant="h4">Welcome to Sigit</Typography>
         <TextField
           onKeyDown={handleInputKeyDown}
-          label="nip05 login / nip46 bunker string / nsec"
+          label="nip05 login / nip46 bunker string / nsec / private key (hex)"
           value={inputValue}
           onChange={(e) => setInputValue(e.target.value)}
           sx={{ width: '100%', mt: 2 }}