glass.rb

#!/usr/bin/env ruby
# frozen_string_literal: true

require "mechanize"
require "uri"

list_urls = [
  "https://www.plusalpha-glass.net/index.php?lang_id=ja&genre_id=&keyword=&sch_goods_tag=&act=&sortkey=&offset=0&tsuka_conv=jpy",
  "https://www.plusalpha-glass.net/index.php?lang_id=ja&genre_id=&keyword=&sch_goods_tag=&act=&sortkey=&offset=60&tsuka_conv=jpy",
  "https://www.plusalpha-glass.net/index.php?lang_id=ja&genre_id=&keyword=&sch_goods_tag=&act=&sortkey=&offset=120&tsuka_conv=jpy"
]

url_and_values = []

agent = Mechanize.new
list_urls.each do |list_url|
  list_page = agent.get(list_url)
  item_urls = list_page.css(".goodslist_box2 a").map{|x| x.attr("href") }.uniq
  item_urls.map! {|item_url| URI.join(list_url, item_url).to_s }

  item_urls.each do |item_url|
    page = agent.get(item_url)
    name = page.css("#main_cont2 > div.col-xs-6 > table:nth-child(3) > tr:nth-child(2) > td.cell_d").text.strip
    price = page.css("#main_cont2 > div.col-xs-6 > table:nth-child(3) > tr:nth-child(3) > td.cell_d").text.strip.sub(",", "").to_i
    count = page.css("#main_cont2 > div.col-xs-6 > table:nth-child(3) > tr:nth-child(4) > td.cell_d").text.strip.sub(",", "").to_i
    p [item_url, name, price, count]
    url_and_values << [item_url, name, price, count]
    sleep 1
  end
  sleep 1
end

puts
p url_and_values.sort_by {|*, count| count }