class CraigsList

# File lib/craigslist/craigslist.rb, line 9
def search(options ={})
  if options[:title_only]
    options.merge!(srchType: "T")
    options.delete(:title_only)
  end
  uri = "http://#{options[:city]}.craigslist.org/search/sss?#{to_query(options)}"
  
  doc = Nokogiri::HTML(open(uri))
  items = []
  doc.css('p.row').each do |link|
    items << {
      data_id: link["data-pid"] ,
      description:  link.css("a").text,
      url: "http://#{options[:city]}.craigslist.org#{link.css("a")[0]["href"]}",
      price: extract_price(link.css("span.price").text)
    }
  end
  items
end

# File lib/craigslist/craigslist.rb, line 29
def us_cities
  doc = Nokogiri::HTML(open("http://www.craigslist.org/about/sites"))
  
  cities = []
  doc.css('a').each do |link|
    if /http:\/\/([a-z]*).craigslist.org/ =~ link["href"]
      puts link["href"]
    end
  end
end

# File lib/craigslist/craigslist.rb, line 43
def extract_price(dollar_string)
  dollar_string[1..-1]
end

# File lib/craigslist/craigslist.rb, line 47
def to_query(hsh)
  hsh.select { |k,v| CraigsList::VALID_FIELDS.include? k }.map {|k, v| "#{k}=#{CGI::escape v}" }.join("&")
end