#
# Author:: Adam Jacob (<adam@opscode.com>)
# Author:: Tyler Cloke (<tyler@opscode.com>)
# Copyright:: Copyright (c) 2008 Opscode, Inc.
# License:: Apache License, Version 2.0
#
# 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.
#

require 'chef/resource'
require 'chef/provider/execute'

class Chef
  class Resource
    class Execute < Chef::Resource

      identity_attr :command

      def initialize(name, run_context=nil)
        super
        @resource_name = :execute
        @command = name
        @backup = 5
        @action = "run"
        @creates = nil
        @cwd = nil
        @environment = nil
        @group = nil
        @returns = 0
        @timeout = nil
        @user = nil
        @allowed_actions.push(:run)
        @umask = nil
        @default_guard_interpreter = :execute
      end

      def umask(arg=nil)
        set_or_return(
          :umask,
          arg,
          :kind_of => [ String, Integer ]
        )
      end

      def command(arg=nil)
        set_or_return(
          :command,
          arg,
          :kind_of => [ String, Array ]
        )
      end

      def creates(arg=nil)
        set_or_return(
          :creates,
          arg,
          :kind_of => [ String ]
        )
      end

      def cwd(arg=nil)
        set_or_return(
          :cwd,
          arg,
          :kind_of => [ String ]
        )
      end

      def environment(arg=nil)
        set_or_return(
          :environment,
          arg,
          :kind_of => [ Hash ]
        )
      end

      alias :env :environment

      def group(arg=nil)
        set_or_return(
          :group,
          arg,
          :kind_of => [ String, Integer ]
        )
      end

      def returns(arg=nil)
        set_or_return(
          :returns,
          arg,
          :kind_of => [ Integer, Array ]
        )
      end

      def timeout(arg=nil)
        set_or_return(
          :timeout,
          arg,
          :kind_of => [ Integer ]
        )
      end

      def user(arg=nil)
        set_or_return(
          :user,
          arg,
          :kind_of => [ String, Integer ]
        )
      end

      def self.set_guard_inherited_attributes(*inherited_attributes)
        @class_inherited_attributes = inherited_attributes
      end

      def self.guard_inherited_attributes(*inherited_attributes)
        # Similar to patterns elsewhere, return attributes from this
        # class and superclasses as a form of inheritance
        ancestor_attributes = []

        if superclass.respond_to?(:guard_inherited_attributes)
          ancestor_attributes = superclass.guard_inherited_attributes
        end

        ancestor_attributes.concat(@class_inherited_attributes ? @class_inherited_attributes : []).uniq
      end

      set_guard_inherited_attributes(
       :cwd,
       :environment,
       :group,
       :user,
       :umask
       )

    end
  end
end