#
# Author:: John Keiser (<jkeiser@opscode.com>)
# Author:: Ho-Sheng Hsiao (<hosh@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/file_system_entry'

module ChefFS
  module FileSystem
    # ChefRepositoryFileSystemEntry works just like FileSystemEntry,
    # except can inflate Chef objects
    class ChefRepositoryFileSystemEntry < FileSystemEntry
      def initialize(name, parent, file_path = nil, data_handler = nil)
        super(name, parent, file_path)
        @data_handler = data_handler
      end

      def data_handler
        @data_handler || parent.data_handler
      end

      def chef_object
        begin
          return data_handler.chef_object(JSON.parse(read, :create_additions => false))
        rescue
          Chef::Log.error("Could not read #{path_for_printing} into a Chef object: #{$!}")
        end
        nil
      end

      def can_have_child?(name, is_dir)
        !is_dir && name[-5..-1] == '.json'
      end

      def children
        # Except cookbooks and data bag dirs, all things must be json files
        Dir.entries(file_path).sort.
            select { |child_name| can_have_child?(child_name, File.directory?(File.join(file_path, child_name))) }.
            map { |child_name| ChefRepositoryFileSystemEntry.new(child_name, self) }
      end

    end
  end
end
