#
# Author:: Doug MacEachern (<dougm@vmware.com>)
# Copyright:: Copyright (c) 2010 VMware, 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 Aix < Chef::Provider::Group::Groupadd

        def required_binaries
          [ "/usr/bin/mkgroup",
            "/usr/bin/chgroup",
            "/usr/bin/chgrpmem",
            "/usr/sbin/rmgroup" ]
        end

        def create_group
          command = "mkgroup"
          command << set_options << " #{@new_resource.group_name}"
          run_command(:command => command)
          modify_group_members
        end

        def manage_group
          command = "chgroup"
          options = set_options
          #Usage: chgroup [-R load_module] "attr=value" ... group
          if options.size > 0
            command << options << " #{@new_resource.group_name}"
            run_command(:command => command)
          end
          modify_group_members
        end

        def remove_group
          run_command(:command => "rmgroup #{@new_resource.group_name}")
        end

        def add_member(member)
          shell_out!("chgrpmem -m + #{member} #{@new_resource.group_name}")
        end

        def set_members(members)
          return if members.empty?
          shell_out!("chgrpmem -m = #{members.join(',')} #{@new_resource.group_name}")
        end

        def remove_member(member)
          shell_out!("chgrpmem -m - #{member} #{@new_resource.group_name}")
        end

        def set_options
          opts = ""
          { :gid => "id" }.sort { |a,b| a[0] <=> b[0] }.each do |field, option|
            if @current_resource.send(field) != @new_resource.send(field)
              if @new_resource.send(field)
                Chef::Log.debug("#{@new_resource} setting #{field.to_s} to #{@new_resource.send(field)}")
                opts << " '#{option}=#{@new_resource.send(field)}'"
              end
            end
          end
          opts
        end

      end
    end
  end
end
