Allow users to update their OpenPGP pubkey

app/views/settings/_account.html.erb

@@ -1,6 +1,6 @@
 <%= tag.section data: {
       controller: "settings--account--email",
-      "settings--account--email-validation-failed-value": @validation_errors.present?
+      "settings--account--email-validation-failed-value": @validation_errors&.[](:email)&.present?
     } do %>
   <h3>E-Mail</h3>
   <%= form_for(@user, url: update_email_settings_path, method: "post") do |f| %>
@@ -23,7 +23,7 @@
         </span>
       </button>
     </p>
-    <% if @validation_errors.present? && @validation_errors[:email].present? %>
+    <% if @validation_errors&.[](:email)&.present? %>
       <p class="error-msg"><%= @validation_errors[:email].first %></p>
     <% end %>
     <div class="initial-hidden">
@@ -41,10 +41,33 @@
 <% end %>
 <section>
   <h3>Password</h3>
-  <p class="mb-8">Use the following button to request an email with a password reset link:</p>
+  <p class="mb-6">Use the following button to request an email with a password reset link:</p>
   <%= form_with(url: reset_password_settings_path, method: :post) do %>
     <p>
       <%= submit_tag("Send me a password reset link", class: 'btn-md btn-gray w-full sm:w-auto') %>
     </p>
   <% end %>
 </section>
+<%= form_for(@user, url: setting_path(:account), html: { :method => :put }) do |f| %>
+  <section class="!pt-8 sm:!pt-12">
+    <h3>OpenPGP</h3>
+    <ul role="list">
+      <%= render FormElements::FieldsetComponent.new(
+            title: "Public key",
+            description: "Your OpenPGP public key in ASCII Armor format ([example])"
+          ) do %>
+        <%= f.text_area :pgp_pubkey,
+          value: @user.pgp_pubkey,
+          class: "h-24 w-full" %>
+        <% if @validation_errors&.[](:pgp_pubkey)&.present? %>
+          <p class="error-msg">This <%= @validation_errors[:pgp_pubkey].first %></p>
+        <% end %>
+      <% end %>
+    </ul>
+  </section>
+  <section>
+    <p class="pt-6 border-t border-gray-200 text-right">
+      <%= f.submit 'Save', class: "btn-md btn-blue w-full md:w-auto" %>
+    </p>
+  </section>
+<% end %>