#
# Author:: AJ Christensen (<aj@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/provider/group/groupadd'
require 'chef/mixin/shell_out'

class Chef
  class Provider
    class Group
      class Gpasswd < Chef::Provider::Group::Groupadd

        include Chef::Mixin::ShellOut

        def load_current_resource
          super
        end

        def define_resource_requirements
          super
          requirements.assert(:all_actions) do |a|
            a.assertion { ::File.exists?("/usr/bin/gpasswd") }
            a.failure_message Chef::Exceptions::Group, "Could not find binary /usr/bin/gpasswd for #{@new_resource}"
            # No whyrun alternative: this component should be available in the base install of any given system that uses it
          end
        end

        def modify_group_members
            if(@new_resource.append)
              unless @new_resource.members.empty?
                @new_resource.members.each do |member|
                  Chef::Log.debug("#{@new_resource} appending member #{member} to group #{@new_resource.group_name}")
                  shell_out!("gpasswd -a #{member} #{@new_resource.group_name}")
                end
              else
                Chef::Log.debug("#{@new_resource} not changing group members, the group has no members to add")
              end
            else
              unless @new_resource.members.empty?
                Chef::Log.debug("#{@new_resource} setting group members to #{@new_resource.members.join(', ')}")
                shell_out!("gpasswd -M #{@new_resource.members.join(',')} #{@new_resource.group_name}")
              else
                Chef::Log.debug("#{@new_resource} setting group members to: none")
                shell_out!("gpasswd -M \"\" #{@new_resource.group_name}")
              end
            end
        end
      end
    end
  end
end