# encoding: utf-8
#
# Copyright (c) 2014-2016 TechnoPark Corp.
# Copyright (c) 2014-2016 Yegor Bugayenko
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the 'Software'), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# 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