require 'twitter'

MAX_PAGES = 5     unless defined?(MAX_PAGES)
TWITTER_RPP = 40  unless defined?(TWITTER_RPP)

module RulesEngine
  module Rule
    class <%=rule_class%> < RulesEngine::Rule::Definition

      attr_reader :message
      attr_reader :plan

      ##################################################################
      # class options
      self.options = 
        {
          :group => 'Twitter',
          :display_name => 'Twitter Reader',    
          :help_partial => '/re_rule_definitions/<%=rule_name%>/help',
          :new_partial => '/re_rule_definitions/<%=rule_name%>/new',
          :edit_partial => '/re_rule_definitions/<%=rule_name%>/edit'
        } 
  
      ##################################################################
      # set the rule data
      def data= data
        if data.nil?
          @title = nil
          @message = nil
          @plan = nil
        else
          @title, @message, @plan = ActiveSupport::JSON.decode(data)
        end  
      end
  
      ##################################################################
      # get the rule attributes
      def title
        @title
      end

      def summary
        "Look for \"#{message}\" and send matches to the plan : #{plan}"
      end
  
      def data
        [title, message, plan].to_json
      end
  
      def expected_outcomes
        [{:outcome => RulesEngine::Rule::Outcome::NEXT}, {:outcome => RulesEngine::Rule::Outcome::STOP_FAILURE}]
      end
  
      ##################################################################
      # set the rule attributes
      def attributes=(params)
        param_hash = params.symbolize_keys

        @title = param_hash[:<%=rule_name%>_title]
        @message = param_hash[:<%=rule_name%>_message]
        @plan = param_hash[:<%=rule_name%>_plan]
      end
  
      ##################################################################
      # validation and errors
      def valid?
        @errors = {}
        @errors[:<%=rule_name%>_title] = "Title required" if title.blank?    
        @errors[:<%=rule_name%>_message] = "Message required" if message.blank?    
        @errors[:<%=rule_name%>_plan] = "Plan required" if plan.blank?
        return @errors.empty?
      end

      ##################################################################
      # callbacks when the rule is added and removed from a workflow
      def before_create()
      end
  
      def before_update()
      end
      
      def before_destroy()
      end
  
      ##################################################################
      # execute the rule
      def process(process_id, data)
        
        sub_process_id = RulesEngine::Process.runner.create  
        
        RulesEngine::Process.auditor.audit(process_id, "Starting Sub Plan #{sub_process_id}", RulesEngine::Process::AUDIT_INFO)
        success = RulesEngine::Process.runner.run(sub_process_id, plan, data.merge(:message => message))
        RulesEngine::Process.auditor.audit(process_id, "Finished Sub Plan #{sub_process_id}", success ? RulesEngine::Process::AUDIT_SUCCESS : RulesEngine::Process::AUDIT_FAILURE)
        
        return success ? RulesEngine::Rule::Outcome.new(RulesEngine::Rule::Outcome::NEXT) : RulesEngine::Rule::Outcome.new(RulesEngine::Rule::Outcome::STOP_FAILURE)
      end  
    end
  end
end