twitter_lib.rb

module TwitterLib
  def self.authenticate
    libs = [Twitter, TweetStream]
    libs.each do |lib|
      lib.configure do |config|
        config.consumer_key = ENV.fetch("TWITTER_CONSUMER_KEY")
        config.consumer_secret = ENV.fetch("TWITTER_CONSUMER_SECRET")
        config.oauth_token = ENV.fetch("TWITTER_OAUTH_TOKEN")
        config.oauth_token_secret = ENV.fetch("TWITTER_OAUTH_SECRET")
      end
    end
  end

  def self.timeline_tweets
    Twitter.home_timeline(:count => 200).map do |status|
      create_tweet(status)
    end
  end

  def self.create_user(user)
    User.new(user.id, user.screen_name)
  end

  def self.create_tweet(status)
    user = create_user(status.user)
    Tweet.new(status.id, user, CGI.unescapeHTML(status.text))
  end

  def self.update(text)
    Twitter.update(text)
  end

  def self.userstream(&block)
    TweetStream.userstream do |status|
      tweet = create_tweet(status)
      block.call(tweet)
    end
  end

  def self.friends
    friends = [create_user(Twitter.current_user)]
    loop do
      response = Twitter.friend_ids
      ids = response.collection
      friends += Twitter.users(*ids).map { |user| create_user(user) }
      break if response.last?
    end
    Friends.new(friends)
  end
end