Clean up wizard updater API for better plugin use

lib/wizard.rb

@@ -2,11 +2,11 @@ require_dependency 'wizard/step'
 require_dependency 'wizard/field'
 
 class Wizard
-  attr_reader :start
-  attr_reader :steps
+  attr_reader :start, :steps, :user
 
-  def initialize
+  def initialize(user)
     @steps = []
+    @user = user
   end
 
   def create_step(step_name)
@@ -33,60 +33,9 @@ class Wizard
     end
   end
 
-  def self.build
-    wizard = Wizard.new
-
-    wizard.append_step('locale') do |step|
-      languages = step.add_field(id: 'default_locale',
-                                 type: 'dropdown',
-                                 required: true,
-                                 value: SiteSetting.default_locale)
-
-      LocaleSiteSetting.values.each do |locale|
-        languages.add_choice(locale[:value], label: locale[:name])
-      end
-    end
-
-    wizard.append_step('forum-title') do |step|
-      step.add_field(id: 'title', type: 'text', required: true, value: SiteSetting.title)
-      step.add_field(id: 'site_description', type: 'text', required: true, value: SiteSetting.site_description)
-    end
-
-    wizard.append_step('privacy') do |step|
-
-      locked = SiteSetting.login_required? && SiteSetting.invite_only?
-      privacy = step.add_field(id: 'privacy',
-                               type: 'radio',
-                               required: true,
-                               value: locked ? 'restricted' : 'open')
-      privacy.add_choice('open', icon: 'unlock')
-      privacy.add_choice('restricted', icon: 'lock')
-    end
-
-    wizard.append_step('contact') do |step|
-      step.add_field(id: 'contact_email', type: 'text', required: true, value: SiteSetting.contact_email)
-      step.add_field(id: 'contact_url', type: 'text', value: SiteSetting.contact_url)
-      step.add_field(id: 'site_contact_username', type: 'text', value: SiteSetting.site_contact_username)
-    end
-
-    wizard.append_step('colors') do |step|
-      theme_id = ColorScheme.where(via_wizard: true).pluck(:theme_id)
-      theme_id = theme_id.present? ? theme_id[0] : 'default'
-
-      themes = step.add_field(id: 'theme_id', type: 'dropdown', required: true, value: theme_id)
-      ColorScheme.themes.each {|t| themes.add_choice(t[:id], data: t) }
-      step.add_field(id: 'theme_preview', type: 'component')
-    end
-
-    wizard.append_step('logos') do |step|
-      step.add_field(id: 'logo_url', type: 'image', value: SiteSetting.logo_url)
-      step.add_field(id: 'logo_small_url', type: 'image', value: SiteSetting.logo_small_url)
-      step.add_field(id: 'favicon_url', type: 'image', value: SiteSetting.favicon_url)
-      step.add_field(id: 'apple_touch_icon_url', type: 'image', value: SiteSetting.apple_touch_icon_url)
-    end
-
-    wizard.append_step('finished')
-
-    wizard
+  def create_updater(step_id)
+    step = @steps.find {|s| s.id == step_id.dasherize}
+    Wizard::StepUpdater.new(@user, step)
   end
+
 end