downloads_ny_photos_step_1

downloads_ny_photos_step_1.rb

# First quick draft

require 'open-uri'
require 'uri'

class PhotoDownloader
  RESOURCE = 'http://access.nypl.org/image.php/'

  def initialize(id, dimension)
    @id = id
    @width, @height = dimension
  end

  def save
    0.upto(@height-1) do |height|
      0.upto(@width-1) do |width|
        download(form_url(height, width), "#{@id}_#{height}_#{width}.png")
      end
    end
  end

  private

  def download(uri, filepath)
    File.write(filepath, uri.read, {mode: 'wb'})
  end

  def form_url(x,y)
    URI.join(RESOURCE, "#{@id}/", fetch_tile(x,y))
  end

  def fetch_tile(x = 0, y = 0)
    "tiles/0/11/#{x}_#{y}.png"
  end
end