feat: add company logo upload and white-label display

- Add has_one_attached :logo to Account model
- Add AccountLogoController for upload/delete in Settings
- Display custom logo in signing forms (start_form, submit_form)
- Display custom logo in submission preview
- Add logo upload form with drag-and-drop to personalization settings

app/controllers/account_logo_controller.rb

@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+class AccountLogoController < ApplicationController
+  before_action :authorize_account_config
+
+  def create
+    file = params[:file]
+
+    if file.blank?
+      return redirect_to settings_personalization_path, alert: I18n.t('unable_to_save')
+    end
+
+    current_account.logo.attach(file)
+
+    redirect_to settings_personalization_path, notice: I18n.t('settings_have_been_saved')
+  end
+
+  def destroy
+    current_account.logo.purge
+
+    redirect_to settings_personalization_path, notice: I18n.t('settings_have_been_saved')
+  end
+
+  private
+
+  def authorize_account_config
+    authorize!(:create, AccountConfig)
+  end
+end

app/models/account.rb

@@ -20,6 +20,8 @@
 class Account < ApplicationRecord
   attribute :uuid, :string, default: -> { SecureRandom.uuid }
 
+  has_one_attached :logo
+
   has_many :users, dependent: :destroy
   has_many :encrypted_configs, dependent: :destroy
   has_many :account_configs, dependent: :destroy

app/views/personalization_settings/_logo_form.html.erb

@@ -1 +1,34 @@
-<%= render 'logo_placeholder' %>
+<% if current_account.logo.attached? %>
+  <div class="mb-4">
+    <div class="flex items-center space-x-4">
+      <img src="<%= url_for(current_account.logo) %>" class="max-h-16 max-w-xs rounded" />
+      <%= button_to t('remove'), settings_account_logo_path, method: :delete, class: 'btn btn-sm btn-error btn-outline', data: { turbo_confirm: t('are_you_sure_') } %>
+    </div>
+  </div>
+<% end %>
+<%= form_with url: settings_account_logo_path, method: :post, html: { autocomplete: 'off', enctype: 'multipart/form-data' } do |f| %>
+  <file-dropzone data-submit-on-upload="true" class="w-full">
+    <label for="logo_file" class="w-full block h-32 relative bg-base-200 hover:bg-base-200/70 rounded-md border border-base-content border-dashed">
+      <div class="absolute top-0 right-0 left-0 bottom-0 flex items-center justify-center p-2">
+        <div class="flex flex-col items-center text-center">
+          <span data-target="file-dropzone.icon">
+            <%= svg_icon('cloud_upload', class: 'w-10 h-10') %>
+          </span>
+          <span data-target="file-dropzone.loading" class="hidden">
+            <%= svg_icon('loader', class: 'w-10 h-10 animate-spin') %>
+          </span>
+          <div class="font-medium mb-1">
+            <%= t('upload_logo') %>
+          </div>
+          <div class="text-xs">
+            <%= t('click_to_upload_or_drag_and_drop_html') %>
+          </div>
+        </div>
+        <input id="logo_file" name="file" class="hidden" data-action="change:file-dropzone#onSelectFiles" data-target="file-dropzone.input" type="file" accept="image/png,image/jpeg,image/jpg,image/gif,image/svg+xml">
+      </div>
+    </label>
+  </file-dropzone>
+  <div class="form-control mt-4">
+    <%= f.submit button_title(title: t('save'), disabled_with: t('saving')), class: 'base-button' %>
+  </div>
+<% end %>

app/views/personalization_settings/_logo_placeholder.html.erb

@@ -1,15 +0,0 @@
-<div class="alert my-4">
-  <%= svg_icon('info_circle', class: 'w-6 h-6') %>
-  <div>
-    <p class="font-bold">
-      <%= t('unlock_with_docuseal_pro') %>
-    </p>
-    <p>
-      <%= t('display_your_company_name_and_logo_when_signing_documents') %>
-      <br>
-      <a class="link font-medium" target="_blank" href="<%= Docuseal.multitenant? ? console_redirect_index_path(redir: "#{Docuseal::CONSOLE_URL}/plans") : "#{Docuseal::CLOUD_URL}/sign_up?#{{ redir: "#{Docuseal::CONSOLE_URL}/on_premises" }.to_query}" %>" data-turbo="false">
-        <%= t('learn_more') %>
-      </a>
-    </p>
-  </div>
-</div>

app/views/start_form/_docuseal_logo.html.erb

@@ -1,6 +1,10 @@
 <a href="/" class="flex justify-center items-center">
-  <span class="mr-3">
-    <%= render 'shared/logo', width: '50px', height: '50px' %>
-  </span>
-  <h1 class="text-5xl font-bold text-center">DocuSeal</h1>
+  <% if @template&.account&.logo&.attached? %>
+    <img src="<%= url_for(@template.account.logo) %>" class="max-h-16 max-w-[250px]" />
+  <% else %>
+    <span class="mr-3">
+      <%= render 'shared/logo', width: '50px', height: '50px' %>
+    </span>
+    <h1 class="text-5xl font-bold text-center">DocuSeal</h1>
+  <% end %>
 </a>

app/views/submissions/_logo.html.erb

@@ -1 +1,5 @@
-<%= render 'shared/logo', width: 40, height: 40 %>
+<% if @submission&.account&.logo&.attached? %>
+  <img src="<%= url_for(@submission.account.logo) %>" class="max-h-10 max-w-[160px]" />
+<% else %>
+  <%= render 'shared/logo', width: 40, height: 40 %>
+<% end %>

app/views/submit_form/_docuseal_logo.html.erb

@@ -1,4 +1,8 @@
 <a href="<%= root_path %>" class="mx-auto text-2xl md:text-3xl font-bold items-center flex space-x-3">
-  <%= render 'shared/logo', class: 'w-9 h-9 md:w-12 md:h-12' %>
-  <span><%= Docuseal.product_name %></span>
+  <% if @submitter&.account&.logo&.attached? %>
+    <img src="<%= url_for(@submitter.account.logo) %>" class="max-h-12 max-w-[200px]" />
+  <% else %>
+    <%= render 'shared/logo', class: 'w-9 h-9 md:w-12 md:h-12' %>
+    <span><%= Docuseal.product_name %></span>
+  <% end %>
 </a>