# encoding: utf-8
#
# Copyright (c) 2014-2017 Yegor Bugayenko
#
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# of this software and associated documentation files (the 'Software'), to deal
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# furnished to do so, subject to the following conditions:
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# SOFTWARE.

module PDD
  module Rule
    module Estimate
      # Rule for min estimate.
      class Min
        # Ctor.
        # +xml+:: XML with puzzles
        def initialize(xml, min)
          @xml = xml
          @min = min.to_i
        end

        def errors
          @xml.xpath("//puzzle[number(estimate) < #{@min}]").map do |p|
            "puzzle #{p.xpath('file/text()')}:#{p.xpath('lines/text()')}"\
            " has an estimate of #{p.xpath('estimate/text()')} minutes,"\
            " which is lower than #{@min} minutes"
          end
        end
      end

      # Rule for max estimate.
      class Max
        # Ctor.
        # +xml+:: XML with puzzles
        def initialize(xml, min)
          @xml = xml
          @min = min.to_i
        end

        def errors
          @xml.xpath("//puzzle[number(estimate) > #{@min}]").map do |p|
            "puzzle #{p.xpath('file/text()')}:#{p.xpath('lines/text()')}"\
            " has an estimate of #{p.xpath('estimate/text()')} minutes,"\
            " which is bigger than #{@min} minutes"
          end
        end
      end
    end
  end
end