gistfile1.rb

module Prestashop
  include HTTParty
  base_uri 'www.vinodalproduttore.it'
  basic_auth 'SEGRETO!', ''
  debug_output STDOUT
  format :xml

  def self.get_collection(klass)
    get("/api/#{klass.pluralize}")["prestashop"]["#{klass.pluralize}"][klass].sort_by {|item| item["id"].to_i}
  end

  def self.get_item(klass, iid)
    get("/api/#{klass.pluralize}/#{iid}")["prestashop"][klass]
  end

  def self.update_order(order)
    ap put("/api/orders/#{order.oid}", :body => {"prestashop" => {"order"  => order.raw}})
  end

  instance_eval do
    %w(order order_state product customer address country state language zone).each do |item|
      define_singleton_method("#{item.pluralize}") do
        get_collection(item)
      end

      define_singleton_method("#{item}") do |iid|
        get_item(item, iid)
      end
    end
  end
end