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Car Sales checker (Ruby script)
source 'https://rubygems.org'
gem 'mechanize'
gem 'pry'
#!/usr/bin/env ruby
require 'mechanize'
puts 'Starting...'
base_url = 'http://www.carsales.com.au'
list_url = "#{base_url}/all-cars/results.aspx?WT.z_srchsrcx=makemodel&q=(((((((((SiloType%3d%5bBrand+new+cars+in+stock%5d%7cSiloType%3d%5bBrand+new+cars+available%5d)%7cSiloType%3d%5bDealer+used+cars%5d)%7cSiloType%3d%5bDemo+and+near+new+cars%5d)%7cSiloType%3d%5bPrivate+seller+cars%5d)%26(Make%7b%3d%7d%5bHyundai%5d%7b%26%7dModel%7b%3d%7d%5bix35%5d))%26GenericGearType%7b%3d%7d%5bAutomatic%5d)%26Service%3d%5bCarsales%5d)%26Location%3dlocation%5b-27.45076%2c153.0341x250000%5d))%26(Odometer%3drange%5b..150000%5d)&vertical=car&postcode=4006&distance=250&silo=stock&sortby=~Price"
agent = Mechanize.new
list_page = agent.get(list_url)
cars = list_page.search('.result-item a:contains("View")')
results = []
cars.each do |car|
print "Fetching car #{cars.index(car) + 1} from #{cars.count}\r"
car_url = "#{base_url}#{car[:href]}"
car_page = agent.get(car_url)
result = {}
%i[badge year color fuel price].each do |attr|
result[attr] = car_page.search("meta[name='WT.z_#{attr}']").first.attributes['content'].value
end
%i[title description image].each do |attr|
result[attr] = car_page.search("meta[name='og:#{attr}']").first.attributes['content'].value rescue nil
end
result[:kilometres] = car_page.search("td.term:contains('Kilometres')").first.parent.children.
search('td.definition').children.first.content.gsub(/[\.,]/, '')
result[:link] = car_url
results << result
end
file_name = "#{Time.now.to_s.match(/(\d{4})-(\d{2})-(\d{2}) (\d{2}):(\d{2}):(\d{2})/).captures.join('_')}.csv"
puts "\nGenerating CSV #{file_name}..."
File.open(file_name, 'w') do |csv|
csv.write "#{[results.first.keys.map(&:to_s)].join(',')}\n"
results.each { |result| csv.write("#{result.values.join(',')}\n") }
end
puts 'Done!'
@lucascaton
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lucascaton commented Dec 13, 2014

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