Wizard: Step 1

lib/wizard/field.rb

@@ -0,0 +1,15 @@
+class Wizard
+  class Field
+    attr_reader :id, :type, :required, :value
+    attr_accessor :step
+
+    def initialize(attrs)
+      attrs = attrs || {}
+
+      @id = attrs[:id]
+      @type = attrs[:type]
+      @required = !!attrs[:required]
+      @value = attrs[:value]
+    end
+  end
+end

lib/wizard/step.rb

@@ -0,0 +1,18 @@
+class Wizard
+  class Step
+    attr_reader :id
+    attr_accessor :index, :fields, :next, :previous
+
+    def initialize(id)
+      @id = id
+      @fields = []
+    end
+
+    def add_field(attrs)
+      field = Field.new(attrs)
+      field.step = self
+      @fields << field
+      field
+    end
+  end
+end

lib/wizard/step_updater.rb

@@ -0,0 +1,42 @@
+class Wizard
+  class StepUpdater
+
+    attr_accessor :errors
+
+    def initialize(current_user, id)
+      @current_user = current_user
+      @id = id
+      @errors = []
+    end
+
+    def update(fields)
+      updater_method = "update_#{@id.underscore}".to_sym
+
+      if respond_to?(updater_method)
+        send(updater_method, fields.symbolize_keys)
+      else
+        raise Discourse::InvalidAccess.new
+      end
+    end
+
+    def update_forum_title(fields)
+      update_setting(:title, fields, :title)
+      update_setting(:site_description, fields, :site_description)
+    end
+
+    def success?
+      @errors.blank?
+    end
+
+    protected
+
+      def update_setting(id, fields, field_id)
+        value = fields[field_id]
+        value.strip! if value.is_a?(String)
+        SiteSetting.set_and_log(id, value, @current_user)
+      rescue Discourse::InvalidParameters => e
+        @errors << {field: field_id, description: e.message }
+      end
+
+  end
+end