#
# Author:: John Keiser (<jkeiser@opscode.com>)
# Copyright:: Copyright (c) 2012 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_fs/file_system/base_fs_dir'
require 'chef_fs/file_system/rest_list_entry'
require 'chef_fs/file_system/not_found_error'
require 'chef_fs/file_system/default_environment_cannot_be_modified_error'
require 'chef_fs/data_handler/environment_data_handler'

module ChefFS
  module FileSystem
    class EnvironmentsDir < RestListDir
      def initialize(parent)
        super("environments", parent, nil, ChefFS::DataHandler::EnvironmentDataHandler.new)
      end

      def _make_child_entry(name, exists = nil)
        if name == '_default.json'
          DefaultEnvironmentEntry.new(name, self, exists)
        else
          super
        end
      end

      class DefaultEnvironmentEntry < RestListEntry
        def initialize(name, parent, exists = nil)
          super(name, parent)
          @exists = exists
        end

        def delete(recurse)
          raise NotFoundError.new(self) if !exists?
          raise DefaultEnvironmentCannotBeModifiedError.new(:delete, self), "#{path_for_printing} cannot be deleted."
        end

        def write(file_contents)
          raise NotFoundError.new(self) if !exists?
          raise DefaultEnvironmentCannotBeModifiedError.new(:write, self), "#{path_for_printing} cannot be updated."
        end
      end
    end
  end
end
