```ruby
class Service::Talker < Service
  string  :url, :token
  boolean :digest

  def receive_push
    repository = payload['repository']['name']
    branch     = branch_name
    commits    = payload['commits']
    token      = data['token']

    http.ssl[:verify] = false
    http.headers["X-Talker-Token"] = token
    http.url_prefix = data['url']

    http_post 'messages.json', :message => "#{summary_message} – #{summary_url}"
    if data['digest'].to_i == 0
      if distinct_commits.size == 1
        commit = distinct_commits.first
        http_post 'messages.json', :message => format_commit_message(commit)
      else
        distinct_commits.each do |commit|
          http_post 'messages.json', :message => "#{format_commit_message(commit)} – #{commit['url']}"
        end
      end
    end
  end
end
```

Refactor common call into private method
user
```ruby
class Service::Talker < Service
  string  :url, :token
  boolean :digest

  def receive_push
    repository = payload['repository']['name']
    branch     = branch_name
    commits    = payload['commits']
    token      = data['token']

    http.ssl[:verify] = false
    http.headers["X-Talker-Token"] = token
    http.url_prefix = data['url']

    say "#{summary_message} – #{summary_url}"
    if data['digest'].to_i == 0
      if distinct_commits.size == 1
        commit = distinct_commits.first
        say format_commit_message(commit)
      else
        distinct_commits.each do |commit|
          say "#{format_commit_message(commit)} – #{commit['url']}"
        end
      end
    end
  end

  private
    def say(message)
      http_post 'messages.json', :message => message
    end
end
```
assistant