Restructure omni services and add Chatwoot research snapshot

research/chatwoot/app/controllers/twitter/callbacks_controller.rb

@@ -0,0 +1,73 @@
+class Twitter::CallbacksController < Twitter::BaseController
+  include TwitterConcern
+
+  def show
+    return redirect_to twitter_app_redirect_url if permitted_params[:denied]
+
+    @response = ensure_access_token
+    return redirect_to twitter_app_redirect_url if @response.status != '200'
+
+    ActiveRecord::Base.transaction do
+      inbox = create_inbox
+      ::Redis::Alfred.delete(permitted_params[:oauth_token])
+      ::Twitter::WebhookSubscribeService.new(inbox_id: inbox.id).perform
+      redirect_to app_twitter_inbox_agents_url(account_id: account.id, inbox_id: inbox.id)
+    end
+  rescue StandardError => e
+    ChatwootExceptionTracker.new(e).capture_exception
+    redirect_to twitter_app_redirect_url
+  end
+
+  private
+
+  def parsed_body
+    @parsed_body ||= Rack::Utils.parse_nested_query(@response.raw_response.body)
+  end
+
+  def account_id
+    ::Redis::Alfred.get(permitted_params[:oauth_token])
+  end
+
+  def account
+    @account ||= Account.find(account_id)
+  end
+
+  def twitter_app_redirect_url
+    app_new_twitter_inbox_url(account_id: account.id)
+  end
+
+  def ensure_access_token
+    twitter_client.access_token(
+      oauth_token: permitted_params[:oauth_token],
+      oauth_verifier: permitted_params[:oauth_verifier]
+    )
+  end
+
+  def create_inbox
+    twitter_profile = account.twitter_profiles.create!(
+      twitter_access_token: parsed_body['oauth_token'],
+      twitter_access_token_secret: parsed_body['oauth_token_secret'],
+      profile_id: parsed_body['user_id']
+    )
+    inbox = account.inboxes.create!(
+      name: parsed_body['screen_name'],
+      channel: twitter_profile
+    )
+    save_profile_image(inbox)
+    inbox
+  end
+
+  def save_profile_image(inbox)
+    response = twitter_client.user_show(screen_name: inbox.name)
+
+    return unless response.status.to_i == 200
+
+    parsed_user_profile = response.body
+
+    ::Avatar::AvatarFromUrlJob.perform_later(inbox, parsed_user_profile['profile_image_url_https'])
+  end
+
+  def permitted_params
+    params.permit(:oauth_token, :oauth_verifier, :denied)
+  end
+end