Auto like a given user's foursquare checkins

like.rb

require 'foursquare2'

access_token   = ''
target_user_id = ''

#URL to request access token
#https://foursquare.com/oauth2/authenticate?client_id=XXX&response_type=token&redirect_uri=http://local.dev

client = Foursquare2::Client.new( :oauth_token => access_token, :api_version => '20120505' )

client.recent_checkins( :limit => 100 ).each do |checkin| 

  next unless checkin.user.id == target_user_id

  #library does not support likes, send request directly
  response = client.connection.post do |req|
    req.url "checkins/#{checkin.id}/like", {}
  end
  
  #trigger error if need be
  response = client.return_error_or_body(response, response.body.response)
  
  puts "Boom. Liked #{checkin.user.firstName} #{checkin.user.lastName}'s checkin to #{checkin.venue.name}. Liked by #{response.likes.summary}"
  
end