# A conclusion to a step.
#
# Whenever a step rule matches, there are a series of conditions to be executed.
module Restfulie
  module Client
    module Mikyung
      class ThenCondition
        attr_reader :description
        
        # creates a new result, based on this description
        def initialize(description)
          @description = description
        end
        
        # finds the rule for this result and executes it
        def execute(resource, goal, mikyung)
          goal.then_rules.each do |rule|
            if (matches = Regexp.new(rule[0]).match(@description))
              return invoke_rule(rule[1], resource, matches, mikyung)
            end
          end
          nil
        end
        
        private
          def invoke_rule(rule, resource, matches, mikyung)
            case rule.arity
            when 1
              rule.call(resource)
            when 2
              rule.call(resource, matches)
            else
              rule.call(resource, matches, mikyung)
            end
          end
      end
    end
  end
end