From 6b251c9d127a2f26ab5cc31e5422840c2ae464e7 Mon Sep 17 00:00:00 2001
From: OFF0 <offbyn@protonmail.com>
Date: Thu, 8 Dec 2022 23:12:50 +0100
Subject: [PATCH] settings: pasting private key should update pubkey

If the user pastes a private-key and the pubkey field is empty,
it should be ok to generate and autofill the pubkey without
confusing the user. There might be circumstances where it is
preferred to see an error if the pubkey does not correspond with
the private key.

Added an on paste event listener that tries to generate and auto-
fill the pubkey (if empty).

Also disabled autocomplete on the settings form to indicate to not
save the key in password manager.
---
 src/index.html |  6 +++---
 src/main.js    | 13 +++++++++++++
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/src/index.html b/src/index.html
index 6084296..2fc2159 100644
--- a/src/index.html
+++ b/src/index.html
@@ -59,16 +59,16 @@
             <input type="text" name="username" id="username" placeholder="username">
             <button type="button" name="publish-username" tabindex="0">publish</button>
           </div> -->
-          <form action="#" name="settings">
+          <form action="#" name="settings" autocomplete="new-password">
             <label for="pubkey">public-key</label>
-            <input type="text" id="pubkey">
+            <input type="text" id="pubkey" autocomplete="off">
             <label for="privatekey">
               private-key
               <button type="button" name="privatekey-toggle" class="btn-inline" >
                 <small>show</small>
               </button>
             </label>
-            <input type="password" id="privatekey">
+            <input type="password" id="privatekey" autocomplete="off">
             <div class="buttons">
               <small id="keystatus" class="form-status" hidden></small>
               <button type="button" name="generate" tabindex="0">new</button>
diff --git a/src/main.js b/src/main.js
index 273f3e4..5c001da 100644
--- a/src/main.js
+++ b/src/main.js
@@ -579,6 +579,19 @@ importBtn.addEventListener('click', () => {
 });
 
 settingsForm.addEventListener('input', () => validKeys(privateKeyInput.value, pubKeyInput.value));
+privateKeyInput.addEventListener('paste', (event) => {
+  if (pubKeyInput.value || !event.clipboardData) {
+    return;
+  }
+  if (privateKeyInput.value === '' || (
+    privateKeyInput.selectionStart === 0
+    && privateKeyInput.selectionEnd === privateKeyInput.value.length
+  )) {
+    try {
+      pubKeyInput.value = getPublicKey(event.clipboardData.getData('text'));
+    } catch(err) {} // settings form will call validKeys on input and display the error
+  }
+});
 
 function validKeys(privatekey, pubkey) {
   try {