wtf.rb

class Product
  attr_accessor :name, :sku, :price, :regular_price, :promoname
  def initialize(name, sku, price, regular_price, promoname)
    @name = name
    @sku = sku 
    @price = price
    @regular_price = regular_price
    @promoname = promoname
    @stock = stock
  end
end

class ProductBuilder
  def self.build
    builder = new
    yield(builder)
    builder.product
  end
  
  def initialize
    @product = Product.new
  end

  def set_name(name)
    @product.name = name
  end

  def set_stock(stock)
    @product.stock = stock
  end

  def set_price(price)
    @product.price = price
  end

  def set_regular_price(regular_price)
    @product.regular_price = regular_price
  end

  def set_sku(sku)
    @product.sku = sku
  end

  def set_promoname(promoname)
    @product.promoname = promoname
  end
  
  def product
    @product
  end
end

class EducationGarfieldParser < Scripting::CustomParser
  @document
  @base_prod
  @ctx
  @list_products

  def parse(ctx)
    @ctx = ctx
    @base_prod = ctx.base_product
    @document = ctx.doc
    if page_valid?
      if @base_prod
        products = products_json
        create_prices_from_json(products["OFFERS"])
        if products["OFFERS"]
          @list_products = extract_products_from_list
          products["OFFERS"].each_with_index do |single_product, index|
            ctx.add_product(create_single_product(single_product, index))
          end
        end
      end
    else
      log "******* PAGE NOT VALID *********"
    end    
    ctx.products.empty?
  end

  def page_valid?
    prod_variations = @document.xpath('//div[@class="row item_detailed_header"]//ul[@class="product-item-scu-item-list item_prop_list"]//li')
    @document.xpath('//div[contains(@class, "bx-catalog-element bx-blue")]/@itemtype').text.strip.include?('//schema.org/Product') && (prod_variations.size > 1)
  end
  
  def create_prices_from_json(offers)
    result = offers.each_with_object([]) { |offer, arr| arr << offer["ITEM_PRICES"].first["BASE_PRICE"] }
  end
  
  def get_prices_for_comparison
    #@list_products.each_with_object {|list_element, res| res << list_element.xpath('')
  end

  def create_single_product(product, index)
    p = @base_prod.dup
    p[NAME] = product["NAME"]
    p[PRICE] = product["ITEM_PRICES"].last["BASE_PRICE"]
    p[SKU] = p[KEY] = product["ID"]
    
    # @list_products.each do |item|
    #   p[PROMONAME] = "Акция" if item.xpath('//@data-discountstatus').text.strip.include?("item_discounted")
    # end
    if product["NAME"].include?(@list_products[index].xpath('.//@title').text.strip) && @list_products[index].xpath('.//@data-discountstatus').text.strip.include?('item_discounted')
      p[PROMONAME] = "URAAAAAAAAAAAAA"
    end
    
    # not valid confirmation on page
    # weight = separate_prod.xpath('.//@title').text.strip
    # compare_hash = get_prices_with_weights
    
    # p[PROMO_NAME] = separate_prod.xpath('.//@data-discountstatus').text.strip.include?("item_discounted") ? "Акция" : nil
    # p[REGULAR_PRICE] = separate_prod.xpath('.//@data-old-price').text.strip.chomp('руб.') if !separate_prod.xpath('.//@data-old-price').empty?
    # p[STOCK] = separate_prod.xpath(".//@data-availstatus").equal?("") ? "out_of stock" : "in stock"
    # hash work attemps here
    # end
    p
  end
  
  def product_from_page
    products = []
    @document.xpath('//div[@class="product-item-scu-item-list item_prop_list"]//li').each do |product|
      
    end
  end
  
  def extract_products_from_list
    @document.xpath('//div[@class="row item_detailed_header"]//ul[@class="product-item-scu-item-list item_prop_list"]//li')
  end

  def prices_from_list
    @document.xpath('//span[@itemprop="offers"]//meta[@itemprop="price"]//@content').map { |node| node.text.strip }
  end

  def products_json
    script = find_description_script
    json = prepare_json(script).tr("'", "\"")
    JSON.parse(json)
  end

  def multi_product_count
    products_json["OFFERS"].size
  end

  def find_description_script
    @ctx.todo[:javascript].find { |scr| scr.include?("JCCatalogElement") }
  end

  def prepare_json(script)
    script.scan(/(?<=JCCatalogElement\().+?(?=\);)/).first
  end
end