require_relative "base"

module Validators
  module FieldValidator
    class NamedTasks < Base

      def valid?
        @value.each do |named_task|
          break unless check_name!(named_task)
          break unless check_run_list!(named_task)
          break unless check_additional_keys!(named_task)
        end
        @message.nil?
      end

      def message
        @message
      end

      private

      def check_name!(task)
        if task.key?('name')
          true
        else
          @message = "One of tasks doesn't have a name"
          false
        end
      end

      def check_run_list!(task)
        if !task.key?('run_list')
          @message = "Task #{task['name']} doesn't have run_list"
          return false
        end

        if !task['run_list'].is_a?(Array)
          @message = "Run list of #{task['name']} isn't an array"
          return false
        end

        wrong_elements = task['run_list'].select do |element|
          Validators::Helpers::RunList::RUN_LIST_REGEX.match(element).nil?
        end

        if wrong_elements.empty?
          true
        else
          @message = "Invalid run list elements: '#{wrong_elements.join(', ')}' for task #{task['name']}."
          false
        end
      end

      def check_additional_keys!(task)
        if task.keys.length > 2
          @message = "Task hash should contain only name and run_list"
          false
        else
          true
        end
      end

    end
  end
end