#
# Author:: John Keiser (<jkeiser@opscode.com>)
# Author:: Ho-Sheng Hsiao (<hosh@opscode.com>)
# Copyright:: Copyright 2012-2016, 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/chef_fs/file_system/repository/file_system_entry"
require "chef/chef_fs/file_system/not_found_error"

class Chef
  module ChefFS
    module FileSystem
      module Repository
        # 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 write_pretty_json=(value)
            @write_pretty_json = value
          end

          def write_pretty_json
            @write_pretty_json.nil? ? root.write_pretty_json : @write_pretty_json
          end

          def data_handler
            @data_handler || parent.data_handler
          end

          def chef_object
            begin
              return data_handler.chef_object(Chef::JSONCompat.parse(read))
            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 write(file_contents)
            if file_contents && write_pretty_json && name[-5..-1] == ".json"
              file_contents = minimize(file_contents, self)
            end
            super(file_contents)
          end

          def minimize(file_contents, entry)
            object = Chef::JSONCompat.parse(file_contents)
            object = data_handler.normalize(object, entry)
            object = data_handler.minimize(object, entry)
            Chef::JSONCompat.to_json_pretty(object)
          end

          protected

          def make_child_entry(child_name)
            ChefRepositoryFileSystemEntry.new(child_name, self)
          end
        end
      end
    end
  end
end