Add new welcome message step

app/assets/javascripts/wizard/components/wizard-field-textarea.js.es6

@@ -0,0 +1,5 @@
+export default Ember.Component.extend({
+  keyPress(e) {
+    e.stopPropagation();
+  }
+});

app/assets/javascripts/wizard/components/wizard-step.js.es6

@@ -74,7 +74,7 @@ export default Ember.Component.extend({
   },
 
   animateInvalidFields() {
-    Ember.run.scheduleOnce('afterRender', () => $('.invalid input[type=text]').wiggle(2, 100));
+    Ember.run.scheduleOnce('afterRender', () => $('.invalid input[type=text], .invalid textarea').wiggle(2, 100));
   },
 
   advance() {

app/assets/javascripts/wizard/templates/components/wizard-field-textarea.hbs

@@ -0,0 +1 @@
+{{textarea elementId=field.id value=field.value class=fieldClass placeholder=field.placeholder}}

app/assets/stylesheets/wizard.scss

@@ -334,6 +334,21 @@ body.wizard {
   }
 }
 
+.textarea-field {
+  textarea {
+    width: 100%;
+    height: 10em;
+  }
+
+  &.invalid {
+    textarea {
+      padding: 3px;
+      border: 4px solid red;
+      border-radius: 3px;
+    }
+  }
+}
+
 .text-field {
   input {
     width: 100%;

config/locales/server.en.yml

@@ -3238,6 +3238,15 @@ en:
             label: "How would you describe your community in one sentence?"
             placeholder: "A place for Jane and her friends to discuss cool stuff"
 
+      introduction:
+        title: "Introduction"
+
+        fields:
+          welcome:
+            label: "Welcome Topic"
+            description: 'Think of this as your "elevator pitch" – how would you describe this site to a stranger on an elevator when you had about 1 minute to talk?'
+            one_paragraph: "Please restrict your welcome message to one paragraph."
+
       privacy:
         title: "Access"
         description: "Is your community open to everyone, or is it restricted by membership, invitation, or approval? If you prefer, you can set things up privately, then switch to public later."

lib/introduction_updater.rb

@@ -0,0 +1,42 @@
+class IntroductionUpdater
+
+  def initialize(user)
+    @user = user
+  end
+
+  def get_summary
+    summary_from_post(find_welcome_post)
+  end
+
+  def update_summary(new_value)
+    post = find_welcome_post
+    return unless post
+
+    previous_value = summary_from_post(post).strip
+
+    if previous_value != new_value
+      revisor = PostRevisor.new(post)
+
+      remaining = post.raw.split("\n")[1..-1]
+      revisor.revise!(@user, raw: "#{new_value}\n#{remaining.join("\n")}")
+    end
+
+  end
+
+protected
+
+  def summary_from_post(post)
+    return post ? post.raw.split("\n").first : nil
+  end
+
+  def find_welcome_post
+    welcome_topic = Topic.where(slug: 'welcome-to-discourse').first
+    return nil unless welcome_topic.present?
+
+    post = welcome_topic.posts.where(post_number: 1).first
+    return nil unless post.present?
+
+    post
+  end
+
+end

lib/wizard/builder.rb

@@ -1,3 +1,5 @@
+require_dependency 'introduction_updater'
+
 class Wizard
   class Builder
 
@@ -40,6 +42,22 @@ class Wizard
         end
       end
 
+      @wizard.append_step('introduction') do |step|
+        introduction = IntroductionUpdater.new(@wizard.user)
+
+        step.add_field(id: 'welcome', type: 'textarea', required: true, value: introduction.get_summary)
+
+        step.on_update do |updater|
+          value = updater.fields[:welcome].strip
+
+          if value.index("\n")
+            updater.errors.add(:welcome, I18n.t("wizard.step.introduction.fields.welcome.one_paragraph"))
+          else
+            introduction.update_summary(value)
+          end
+        end
+      end
+
       @wizard.append_step('privacy') do |step|
         locked = SiteSetting.login_required? && SiteSetting.invite_only?
         privacy = step.add_field(id: 'privacy',

spec/components/step_updater_spec.rb

@@ -38,6 +38,21 @@ describe Wizard::StepUpdater do
     expect(wizard.completed_steps?('forum-title')).to eq(true)
   end
 
+  it "updates the introduction step" do
+    topic = Fabricate(:topic, title: "Welcome to Discourse")
+    welcome_post = Fabricate(:post, topic: topic, raw: "this will be the welcome topic post\n\ncool!")
+
+    updater = wizard.create_updater('introduction', welcome: "Welcome to my new awesome forum!")
+    updater.update
+
+    expect(updater.success?).to eq(true)
+    welcome_post.reload
+    expect(welcome_post.raw).to eq("Welcome to my new awesome forum!\n\ncool!")
+
+    expect(wizard.completed_steps?('introduction')).to eq(true)
+
+  end
+
   it "won't allow updates to the default value, when required" do
     updater = wizard.create_updater('forum_title', title: SiteSetting.title, site_description: 'neat place')
     updater.update