require 'rake'
require 'cucumber/rake/task'
 
module Henry
  
  class Task
    
    # The Henry Task implementation for Cucumber
    class CucumberTask < Task
      
      # The temporary output file path for the RspecTask execution.
      OUT_PATH = 'cucumber.out'

      # The reports path template.
      REPORTS_DIR = '.henry/reports/${FORMAT}'
      
      # Executes the CucumberTask and returns its results.
      def execute
        begin
          Rake.application['cucumber'].invoke 
          
          self.execution.code = 'OK'
          self.execution.message = 'OK'
          self.execution.output = File.open(OUT_PATH, 'r').read
        rescue Exception => e
          self.execution.code = 'ERROR'
          self.execution.message = 'ERROR'
          self.execution.output = File.open(OUT_PATH, 'r').read
          self.execution.backtrace = e.message
        end
      end
      
      # Configures the Task.
      #
      # @param [Hash] params the task params.
      def configure(params)
        File.open(OUT_PATH, 'w') { |f| }

        # Makes available the cucumber rake task.
        Cucumber::Rake::Task.new do |t|
          if self.data.options
            t.cucumber_opts = self.custom_options
          else
            t.cucumber_opts = "--out #{OUT_PATH}"
            t.fork = false
          end
        end

        self.export_params(params)
      end
      
      # Returns the custom cucumber_opts that user may have passed.
      #
      # @return [String]
      def custom_options
        "#{self.format_options} #{self.tags_options}" 
      end
      
      # Returns the cucumber_opts related with formatting.
      #
      # @return [String]
      def format_options
        "--out #{OUT_PATH}"
      end
      
      # Returns the cucumber_opts related with tags to be run.
      #
      # @return [String]
      def tags_options
        return '' if self.data.options['tags'].nil?

        self.data.options['tags'].collect do |tag|
          "--tags #{tag}"
        end.join(' ')
      end

    end

  end

end