#--
# Copyright (C) 2006 Dimitrij Denissenko
# Please read LICENSE document for more information.
#++
require 'base64'

module Retrospectiva
  module Extension
    module HTTPAuthentication      

      def self.included(base) #:nodoc:
        base.send(:include, InstanceMethods)
      end

      module InstanceMethods
        protected 
        
          def before_authenticate  
            unless session[:user_id].is_a?(Integer)
              request_keys = [
                'REDIRECT_REDIRECT_X_HTTP_AUTHORIZATION', 'REDIRECT_X_HTTP_AUTHORIZATION', 
                'X-HTTP_AUTHORIZATION', 'HTTP_AUTHORIZATION']
              
              if auth_key = request_keys.find {|key| request.env.has_key?(key) }
                method, data = request.env[auth_key].to_s.split(" ", 2)
                credentials = Base64.decode64(data).to_s.split(":")[0..1]
                
                User.current = User.authenticate(:login => credentials[0], :password => credentials[1])
                session[:user_id] = User.current.id if User.current
              end
            end
          end    
          
      end
    end
  end
end

ActionController::Base.send(:include, Retrospectiva::Extension::HTTPAuthentication)