#
# Author:: Joshua Timberman (<joshua@opscode.com>)
# Copyright:: Copyright (c) 2009 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/log'
require 'chef/mixin/command'
require 'chef/provider'

class Chef
  class Provider
    class Mount < Chef::Provider

      include Chef::Mixin::Command

      def action_mount
        unless @current_resource.mounted
          Chef::Log.debug("#{@new_resource}: attempting to mount")
          status = mount_fs()
          if status
            @new_resource.updated_by_last_action(true)
            Chef::Log.info("#{@new_resource}: mounted successfully")
          end
        else
          Chef::Log.debug("#{@new_resource}: not mounting, already mounted")
        end
      end

      def action_umount
        if @current_resource.mounted
          Chef::Log.debug("#{@new_resource}: attempting to unmount")
          status = umount_fs()
          if status
            @new_resource.updated_by_last_action(true)
            Chef::Log.info("#{@new_resource}: unmounted successfully")
          end
        else
          Chef::Log.debug("#{@new_resource}: not unmounting, already unmounted")
        end
      end

      def action_remount
        unless @new_resource.supports[:remount]
          raise Chef::Exceptions::UnsupportedAction, "#{self.to_s} does not support :remount"
        else
          if @current_resource.mounted
            Chef::Log.debug("#{@new_resource}: attempting to remount")
            status = remount_fs()
            if status
              @new_resource.updated_by_last_action(true)
              Chef::Log.info("#{@new_resource}: remounted successfully")
            end
          else
            Chef::Log.debug("#{@new_resource}: not mounted, not remounting")
          end
        end
      end
      
      def action_enable
        unless @current_resource.enabled
          status = enable_fs
          if status
            @new_resource.updated_by_last_action(true)
            Chef::Log.info("#{@new_resource}: enabled successfully")
          else
            Chef::Log.debug("#{@new_resource}: not enabling, already enabled")
          end
        end
      end
      
      def action_disable
        if @current_resource.enabled
          status = disable_fs
          if status
            @new_resource.updated_by_last_action(true)            
            Chef::Log.info("#{@new_resource}: disabled successfully")
          else
            Chef::Log.debug("#{@new_resource}: not disabling, already disabled")
          end
        end
      end

      def mount_fs
        raise Chef::Exceptions::UnsupportedAction, "#{self.to_s} does not support :mount"
      end

      def umount_fs
        raise Chef::Exceptions::UnsupportedAction, "#{self.to_s} does not support :umount"
      end

      def remount_fs
        raise Chef::Exceptions::UnsupportedAction, "#{self.to_s} does not support :remount"
      end
      
      def enable_fs
        raise Chef::Exceptions::UnsupportedAction, "#{self.to_s} does not support :enable"        
      end
      
      def disable_fs
        raise Chef::Exceptions::UnsupportedAction, "#{self.to_s} does not support :disable"        
      end      
    end
  end
end