continente.rb

require 'nokogiri'
require 'open-uri'

Encoding.default_external = 'UTF-8'
query = params['query'] || 'banana'
page = params['page'].to_i || 0
url = "https://www.continente.pt/pesquisa/?q=#{query}&start=#{page * 36}&srule=Continente%2003&pmin=0.01"
document = Nokogiri::HTML(open(url))

search_items = document.css('div.productTile').map do |tile|
  title = tile.css('a.pwc-tile--description').text.strip
  price = tile.css('span.ct-price-formatted').text.strip
  unit = tile.css('span.ct-tile--price-primary span.ct-m-unit').text.strip
  img_url = tile.css('img.ct-tile-image').attr('data-src').value
  brand = tile.css('p.pwc-tile--brand').text.strip
  quantity = tile.css('p.pwc-tile--quantity').text.strip
  destiny_url = tile.css('a.pwc-tile--description').attr('href').value

  {
    title: title,
    price: price,
    unit: unit,
    img_url: img_url,
    brand: brand,
    quantity: quantity,
    destiny_url: destiny_url,
  }
end

{
  query: query,
  page: 0,
  search_items: search_items,
  url: url,
}