#
# Copyright:: Copyright 2019, Chef Software Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
module RuboCop
  module Cop
    module Chef
      module ChefDeprecations
        # The node.set_unless method has been removed in Chef-13 and must be replaced by node.normal_unless.
        #
        # Note that node.normal_unless keeps the semantics identical, but the use of node.normal is
        # also discouraged.
        #
        # @example
        #
        #   # bad
        #   node.set_unless['foo'] = true
        #
        #   # good
        #   node.normal_unless['foo'] = true
        #
        class NodeSetUnless < Cop
          MSG = 'Do not use node.set_unless. Replace with node.normal_unless to keep identical behavior.'.freeze

          def_node_matcher :node_set_unless?, <<-PATTERN
            (send (send _ :node) $:set_unless)
          PATTERN

          def on_send(node)
            node_set_unless?(node) do
              add_offense(node, location: :selector, message: MSG, severity: :refactor)
            end
          end

          def autocorrect(node)
            lambda do |corrector|
              corrector.replace(node.loc.selector, 'normal_unless')
            end
          end
        end
      end
    end
  end
end
