allow to add custom form completed message

app/views/personalization_settings/_form_completed_message_form.html.erb

@@ -0,0 +1,28 @@
+<div class="collapse collapse-plus bg-base-200">
+  <input type="checkbox">
+  <div class="collapse-title text-xl font-medium">
+    <div>
+      Completed Form Message
+    </div>
+  </div>
+  <div class="collapse-content">
+    <%= form_for AccountConfigs.find_or_initialize_for_key(current_account, AccountConfig::FORM_COMPLETED_MESSAGE_KEY), url: settings_personalization_path, method: :post, html: { autocomplete: 'off', class: 'space-y-4' } do |f| %>
+      <%= f.hidden_field :key %>
+      <%= f.fields_for :value, Struct.new(:title, :body).new(*(f.object.value || {}).values_at('title', 'body')) do |ff| %>
+        <div class="form-control">
+          <%= ff.label :title, 'Title', class: 'label' %>
+          <%= ff.text_field :title, class: 'base-input', dir: 'auto' %>
+        </div>
+        <div class="form-control">
+          <%= ff.label :body, 'Body', class: 'label' %>
+          <autoresize-textarea>
+            <%= ff.text_area :body, class: 'base-input w-full py-2', dir: 'auto' %>
+          </autoresize-textarea>
+        </div>
+      <% end %>
+      <div class="form-control pt-2">
+        <%= f.button button_title(title: 'Save', disabled_with: 'Saving'), class: 'base-button' %>
+      </div>
+    <% end %>
+  </div>
+</div>

app/views/personalization_settings/show.html.erb

@@ -10,7 +10,10 @@
     <p class="text-4xl font-bold mb-4 mt-8">Company Logo</p>
     <%= render 'logo_form' %>
     <p class="text-4xl font-bold mb-4 mt-8">Submission Form</p>
-    <%= render 'form_completed_button_form' %>
+    <div class="space-y-4">
+      <%= render 'form_completed_message_form' %>
+      <%= render 'form_completed_button_form' %>
+    </div>
     <%= render 'form_customization_settings' %>
   </div>
   <div class="w-0 md:w-52"></div>