Use Ruby Enumerator to create infinite API loader

demo.rb

paginator = InfinitePaginator.new(
  'https://jsonplaceholder.typicode.com/users/%<page>d'
)

pp paginator.take(12)
# =>
# [{"id"=>1, "name"=>"Leanne Graham"},
# {"id"=>2, "name"=>"Ervin Howell"},
# {"id"=>3, "name"=>"Clementine Bauch"},
# {"id"=>4, "name"=>"Patricia Lebsack"},
# {"id"=>5, "name"=>"Chelsey Dietrich"},
# {"id"=>6, "name"=>"Mrs. Dennis Schulist"},
# {"id"=>7, "name"=>"Kurtis Weissnat"},
# {"id"=>8, "name"=>"Nicholas Runolfsdottir V"},
# {"id"=>9, "name"=>"Glenna Reichert"},
# {"id"=>10, "name"=>"Clementina DuBuque"},
# {"id"=>1, "name"=>"Leanne Graham"},
# {"id"=>2, "name"=>"Ervin Howell"}]

paginator.rb

require 'json'
require 'net/http'

class InfinitePaginator
  include Enumerable

  attr_reader :page, :per_page

  def initialize(uri, page: 1, per_page: 10)
    @uri = uri
    @page = page
    @per_page = per_page
  end

  def each(&block)
    stream.each(&block)
  end

  def uri
    URI(format(@uri, page: @page))
  end

  def current_data
    res = Net::HTTP.get(uri)
    JSON.parse(res).slice('id', 'name')
  end

  def stream
    @stream ||= Enumerator.new do |y|
      loop do
        y.yield current_data
        @page = (page % per_page) + 1
      end
    end
  end
end