#
# Copyright (C) 2007 Mobio Networks, Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

=begin
this provides advertising call from AdMobs
=end
require 'net/http'
require 'uri'
require 'md5'  

module Rmobio
  module Ads
    module AdMobs
      
      def getAd(keywords,adClient,ip=request.remote_ip,url=request.request_uri,useragent=request.user_agent)
        logger.info("Retrieving AdMobs ad")
        admob_params = {:admob_site_id => adClient, # REQUIRED - get from admob.com, value is generally set in rmobio.yml
          :admob_pc => "",       # OPTIONAL - Postal Code, e.g. "90210"
          :admob_dob => "",      # OPTIONAL - Date of Birth formatted like YYYYMMDD, e.g. "19800229"
          :admob_gender => "",   # OPTIONAL - Gender, m[ale] or f[emale]
          :admob_keywords => keywords} 
        # change to "live" when ready to deploy
        admob_mode = "test"
        
        admob_endpoint = "http://r.admob.com/ad_source.php"
        admob_version  = "20071126-RUBY-19db4ba7ab087721"
        admob_timeout  = 1.0
        admob_ignore   = Set["HTTP_PRAGMA", "HTTP_CACHE_CONTROL", "HTTP_CONNECTION", "HTTP_USER_AGENT", "HTTP_COOKIE"]
        # build url
        admob_post = {} 
        admob_post["s"] = admob_params[:admob_site_id]
        admob_post["u"] = useragent if useragent
        admob_post["i"] = ip if ip
        admob_post["p"] = url if url
        admob_post["t"] = MD5.hexdigest(session.session_id)
        admob_post["v"] = admob_version
        admob_post["d[pc]"] = admob_params[:admob_pc]
        admob_post["d[dob]"] = admob_params[:admob_dob]
        admob_post["d[gender]"] = admob_params[:admob_gender]
        admob_post["k"] = admob_params[:admob_keywords]      
        request.env.each {|k,v| admob_post["h[#{k}]"] = v unless admob_ignore.include?(k.upcase)}
        admob_post["m"] = "test" if admob_mode == "test"     
        begin # request ad
          admob_uri = URI.parse(admob_endpoint)
          admob_request = Net::HTTP::Post.new(admob_uri.path)
          admob_request.set_form_data(admob_post)
          admob_conn = Net::HTTP.new(admob_uri.host, admob_uri.port)
          admob_conn.read_timeout = admob_timeout
          admob_conn.open_timeout = admob_timeout
          admob_response = admob_conn.start {|admob_http| admob_http.request(admob_request) }
          admob_contents = admob_response.body     
        rescue Timeout::Error => te
          admob_contents = "<img src=\"http://t.admob.com/li.php/c.gif/#{admob_params[:admob_site_id]}/1/#{admob_timeout}/#{MD5.hexdigest(request.request_uri)}\" alt=\"\" width=\"1\" height=\"1\" />"
        rescue
        end
        @ad=admob_contents
      end
      
      # the keyword search version also evaluates the supplied page so 
      # for admobs they are the same
      def getAdByPage(adClient)
        getAd("",adClient)
      end
      
    end
  end
end