rt-fav-bot.rb

require 'twitter'

## login ##
client = Twitter::REST::Client.new do |config|
  config.consumer_key        = ENV['CONSUMER_KEY']
  config.consumer_secret     = ENV['CONSUMER_SECRET']
  config.access_token        = ENV['ACCESS_TOKEN']
  config.access_token_secret = ENV['ACCESS_TOKEN_SECRET']
end

# last since_id from a file
file_id  = open("current.txt").readlines[0].to_i
file_rt  = open("current.txt").readlines[1].to_i
file_fav = open("current.txt").readlines[2].to_i

# access to Twitter API
results = client.retweets_of_me(count: 1)
current_id = results[0].id
current_rt = results[0].retweet_count
current_fav = results[0].favorite_count

unless file_id == current_id && file_rt == current_rt && file_fav == current_fav
  # update a file
  f = File.open("current.txt", "w")
  f.puts current_id
  f.puts current_rt
  f.puts current_fav
  f.close

  results.each do |tweet|
    rt = tweet.retweet_count
    fav = tweet.favorite_count
    text = tweet.text[0..40]
    if tweet.text.length > 41
      text += "..."
    end
    status_url = "https://twitter.com/" + tweet.user.screen_name + "/status/" + tweet.id.to_s

    ## Fav only ##
    if rt == 0 && fav > 0
      status = fav.to_s + "Fav " + "My tweet's response: " + text + " " + status_url
      client.update(status, in_reply_to_status_id: tweet.id)
      puts "Post Response:" + status
    ## RT only ##
    elsif rt > 0 && fav == 0
      status =  rt.to_s + "RT " + "My tweet's response: " + text + " " + status_url
      client.update(status, in_reply_to_status_id: tweet.id)
      puts "Post Response:" + status
    ## both ##
    elsif rt > 0 && fav > 0
      status = rt.to_s + "RT, " + fav.to_s + "Fav " + "My tweet's response: " + text + " " + status_url
      client.update(status, in_reply_to_status_id: tweet.id)
      puts "Post Response:" + status
    end
  end
end