Scrape untappd checkins

untappd.rb

#!/usr/bin/env ruby

require 'json'
require 'open-uri'

class UntappdApi
  attr_accessor :access_token

  def url_for(user_id, max_id)
    "https://api.untappd.com/v4/user/checkins/#{user_id}?access_token=#{access_token}&max_id=#{max_id}&limit=50"
  end

  def user_feed(user_id, max_id = '0')
    Enumerator.new do |y|
      loop do
        data = open(url_for(user_id, max_id)).read
        json = JSON.parse data

        json['response']['checkins']['items'].map do |checkin|
          y.yield(checkin)
        end

        max_id = json['response']['pagination']['max_id']
        break if max_id == ''
      end
    end
  end
end

client = UntappdApi.new.tap{|c| c.access_token = ENV['UNTAPPD_TOKEN'] }

client.user_feed('tigris666').each do |checkin|
  puts checkin.to_json
end