service.rb

require 'sinatra/base'
require 'sinatra/json'

module Photograph
  class Service < ::Sinatra::Base
    helpers Sinatra::JSON

    def artist
      unless @artist
        puts "CWEIR"
        @artist = Artist.new
      end
      @artist
    end

    get '/' do
      json :version => Photograph::VERSION
    end

    get '/shoot' do
      options = {:url => params["url"],
                   :x => params["x"].to_i,
                   :y => params["y"].to_i,
                   :w => params["w"].to_i,
                   :h => params["h"].to_i}


      artist.shoot! options do |image|
        send_file image.path, :type => :png
      end
    end
  end
end