Class: GoogleSource

Inherits:
Source show all
Defined in:
lib/sources/google_source.rb

Constant Summary

Constants inherited from Source

Source::SIMPLE_SOURCES_YAML_FILE

Instance Attribute Summary

Attributes inherited from Source

#batch_fetch_delay, #cpc, #for_product_info, #for_review_aggregates, #homepage, #mappable, #name, #offer_affiliate, #offer_enabled, #offer_ttl_seconds, #product_code_examples, #product_code_regexp, #product_page_link_erb, #search_token_separator, #search_url, #supports_lifetime_ratings, #use_for_merchant_ratings

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Source

affiliate_sources, #eql?, #fetch_offers, #hash, inherited, #keyname, keyname, keyname=, merchant_rating_sources, method_missing, #nullify_offer_url, offer_sources, #product_code_valid?, #product_page_link, source, sources, #to_s, #url_for_merchant_source_page_alt

Constructor Details

#initialize ⇒ GoogleSource

Returns a new instance of GoogleSource.



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# File 'lib/sources/google_source.rb', line 7

def initialize
  super(:name => 'Google Shopping',
        :homepage => 'http://www.google.com/products',
        :cpc => 0,
        :offer_enabled => false,
        :offer_ttl_seconds => 0,
        :use_for_merchant_ratings => true,
        :offer_affiliate => false,
        :supports_lifetime_ratings => false,
        :batch_fetch_delay => 3,
        :product_code_regexp => nil,
        :product_code_examples => [])
end

Class Method Details

.grab_new_mappings(google_merchant_list_url) ⇒ Object 



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# File 'lib/sources/google_source.rb', line 71

def self.grab_new_mappings(google_merchant_list_url)
  #google_merchant_list_url = "http://www.google.com/products/catalog?q=Projectors&btnG=Search+Products&show=dd&cid=8852330310663509594&sa=N&start=0#ps-sellers"
  body = open(google_merchant_list_url)
  doc = Hpricot.XML(body)

  google_sellers = []
  sellers_table = (doc / '#ps-sellers-table')
  sellers_table.search('td.ps-seller-col').each_with_index do |sellers_column, i|
    next if i == 0
#      puts "Seller's column: #{sellers_column}"
    link = sellers_column.at('a')
    unless link.nil?
      name = link.inner_text.strip
      puts "Seller: #{name}"
      if link.attributes['href'].match /\?q=http:\/\/(.+)\//
        domain = Merchant.parse_url_for_domain($1)
        puts "Domain: #{domain}"
      end
    end
    rating_link = sellers_column.next_sibling.at('a')
    code = rating_link.attributes['href'].match(/.*&cid=(.+)&.*/)[1] unless rating_link.nil?
    puts "CID: #{code}"
    puts '-----------------------------------------------------'
    google_sellers << {:name => name, :code => code, :domain => domain} unless domain.nil? || domain.empty? || code.nil? || code.empty?
  end

  new_mappings_count = 0
  google_source = GoogleSource.first
  google_sellers.each do |seller|
    merchants = Merchant.find(:all, :conditions => {:domain => seller[:domain]})
    if merchants.length > 1
      puts "More than one merchant found for domain: #{seller[:domain]}"
    elsif merchants.length == 1
      merchant = merchants.first
      if merchant.merchant_source(google_source).nil?
        url = google_source.url_for_merchant_source_page(seller[:code])
        new_merchant_source = google_source.fetch_merchant_source(url)
        merchant.merchant_sources << new_merchant_source
        merchant.update_from_sources
        merchant.save!
        new_mappings_count += 1
      end
    end
  end
  puts "Google sellers found: #{google_sellers.length}"
  puts "New mappings added: #{new_mappings_count}"
  new_mappings_count
end

Instance Method Details

#code_from_merchant_source_page_url(merchant_source_page_url) ⇒ Object 



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# File 'lib/sources/google_source.rb', line 25

def code_from_merchant_source_page_url(merchant_source_page_url)
  merchant_source_page_url.match /google.com.*cid=(.+?)($|&.*)/
  $1
end

#fetch_merchant_source(merchant_source_page_url) ⇒ Object 



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# File 'lib/sources/google_source.rb', line 30

def fetch_merchant_source(merchant_source_page_url)
  delay_fetch
  doc = Hpricot(open(merchant_source_page_url))

  merchant_source = OpenStruct.new
  merchant_source.source = self

  # merchant code
  code = code_from_merchant_source_page_url(merchant_source_page_url)
  merchant_source.code = code

  # merchant name
  element = doc.at('//table//tr/td//font[@size = "+1"]')
  unless element.nil?
    name = element.inner_text.strip
    merchant_source.name = name
  end

  rating_box_element = doc.at('//table//tr//td//b[text() = "Average rating"]/..')

  # merchant rating
  element = rating_box_element.at('font[@size = "+3"]')
  unless element.nil?
    merchant_rating = element.inner_text.match(/\s*(.*?)\s*\/.*?/)[1]
    merchant_source.merchant_rating = merchant_rating.to_f * 20.0 unless merchant_rating.nil?
  end

  # Num Merchant Reviews
  element = rating_box_element.at('font[@size = "-1"]')
  unless element.nil?
    num_merchant_reviews = element.inner_text.match(/((\d|,)+)/)[1]
    merchant_source.num_merchant_reviews = num_merchant_reviews.delete(',').to_i unless num_merchant_reviews.nil? || num_merchant_reviews.empty?
  end

  merchant_source
end

#format_rating(merchant_source) ⇒ Object 



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# File 'lib/sources/google_source.rb', line 67

def format_rating(merchant_source)
  '%01.1f/5.0' % (merchant_source.get_merchant_rating.to_f / 20.0)
end

#url_for_merchant_source_page(merchant_source_code) ⇒ Object 



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# File 'lib/sources/google_source.rb', line 21

def url_for_merchant_source_page(merchant_source_code)
  "http://www.google.com/products/reviews?sort=1&cid=#{merchant_source_code}"
end