Class: Lita::Handlers::OnewheelAmazonProduct

Inherits:
Handler
  • Object
show all
Defined in:
lib/lita/handlers/onewheel_amazon_product.rb

Instance Method Summary collapse

Instance Method Details

#get_amazon_product(response) ⇒ Object 



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# File 'lib/lita/handlers/onewheel_amazon_product.rb', line 9

def get_amazon_product(response)
  description = ''
  price = 0
  uri = response.matches[0][0]
  Lita.logger.debug "lita-onewheel-amazon-product: Grabbing URI #{uri}"
  doc = RestClient.get uri

  noko_doc = Nokogiri::HTML doc
  noko_doc.css('meta').each do |meta|
    attrs = meta.attributes
    if attrs['name'].to_s == 'title'
      description = process_description attrs['content'].to_s
    end
  end

  if description.empty?
    Lita.logger.error "lita-onewheel-amazon-product: Processing of #{uri} failed."
    return
  end

  price = get_price(noko_doc)

  unless description.empty?
    response.reply price.to_s + ' ' + description.to_s
  end
end

#get_price(noko_doc) ⇒ Object

Getting prices is very non-intuitive, every type of price has it’s own structure. Here we keep trying until we get something.



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# File 'lib/lita/handlers/onewheel_amazon_product.rb', line 38

def get_price(noko_doc)
  price_node = noko_doc.css('span#priceblock_ourprice')

  # Typical product price
  if price_node.empty?
    price_node = noko_doc.css('div#unqualifiedBuyBox .a-color-price')
  end

  # Third-party seller only price
  if price_node.empty?
    price_node = noko_doc.css('div#buyNewSection span.a-color-price')
  end

  # Kindle book price
  if price_node.empty?
    price_node = noko_doc.css('td.dp-price-col span.a-color-price')
  end

  unless price_node.empty?
    price = price_node.first.content.to_s
  end
  price
end

#process_description(desc) ⇒ Object 



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# File 'lib/lita/handlers/onewheel_amazon_product.rb', line 62

def process_description(desc)
  desc.sub! /^Amazon.com\s*: /, ''
  desc.sub! /:.*$/, ''
end