#
# 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/rest_list_dir'
require 'chef_fs/file_system/data_bag_dir'

module ChefFS
  module FileSystem
    class DataBagsDir < RestListDir
      def initialize(parent)
        super("data_bags", parent, "data")
      end

      def child(name)
        result = @children.select { |child| child.name == name }.first if @children
        result || DataBagDir.new(name, self)
      end

      def children
        begin
          @children ||= ChefFS::RawRequest.raw_json(rest, api_path).keys.sort.map do |entry|
            DataBagDir.new(entry, self, true)
          end
        rescue Timeout::Error => e
          raise ChefFS::FileSystem::OperationFailedError.new(:children, self, e), "Timeout getting children: #{e}"
        rescue Net::HTTPServerException => e
          if e.response.code == "404"
            raise ChefFS::FileSystem::NotFoundError.new(self, e)
          else
            raise ChefFS::FileSystem::OperationFailedError.new(:children, self, e), "HTTP error getting children: #{e}"
          end
        end
      end

      def can_have_child?(name, is_dir)
        is_dir
      end

      def create_child(name, file_contents)
        begin
          rest.post_rest(api_path, { 'name' => name })
        rescue Timeout::Error => e
          raise ChefFS::FileSystem::OperationFailedError.new(:create_child, self, e), "Timeout creating child '#{name}': #{e}"
        rescue Net::HTTPServerException => e
          if e.response.code == "409"
            raise ChefFS::FileSystem::AlreadyExistsError.new(:create_child, self, e), "Cannot create #{name} under #{path}: already exists"
          else
            raise ChefFS::FileSystem::OperationFailedError.new(:create_child, self, e), "HTTP error creating child '#{name}': #{e}"
          end
        end
        @children = nil
        DataBagDir.new(name, self, true)
      end
    end
  end
end
