require 'net/http'
require 'uri'

module Format
  class Zbozi

    def initialize
      @recode = false
    end


    def filename
      'temp/'+self.class.name+'.xml'
    end


    def load_saved_file
      File.read filename
    end


    def load_file
      return load_saved_file if !$DOWNLOAD && File.file?(filename)
      data = ::Net::HTTP.get(URI.parse(@url))
      File.write(filename, data)
      data
    end


    def parse_product_name(xml) xml.match(/<PRODUCT>(.*?)<\/PRODUCT>/m)[1]; end
    def parse_price(xml) xml.match(/<PRICE_VAT>(.*?)<\/PRICE_VAT>/m)[1]; end
    def parse_description(xml) xml.match(/<DESCRIPTION>(.*?)<\/DESCRIPTION>/m)[1]; end
    def parse_url(xml) xml.match(/<URL>(.*?)<\/URL>/m)[1]; end
    def parse_img(xml) xml.match(/<IMGURL>(.*?)<\/IMGURL>/m)[1]; end

    def parse_item xml
      {
        :name => parse_product_name(xml),
        :price => parse_price(xml),
        :url => parse_url(xml),
        :img => parse_img(xml),
        :desc => parse_description(xml)
      }
    end


    def parse xml
      items = []
      xml.scan(/<SHOPITEM>.*?<\/SHOPITEM>/m) do |x|
        items << parse_item(x)
      end
      items
    end

    def products
      file = load_file
      if @recode
        convertor = Encoding::Converter.new(@recode[0], @recode[1])
        file = convertor.convert file
      end
      parse file
    end
  end
end