#
# Author:: Adam Jacob (<adam@opscode.com>)
# Author:: Seth Falcon (<seth@opscode.com>)
# Copyright:: Copyright (c) 2009-2010 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/knife'
require 'chef/knife/data_bag_secret_options'

class Chef
  class Knife
    class DataBagShow < Knife
      include DataBagSecretOptions

      deps do
        require 'chef/data_bag'
        require 'chef/encrypted_data_bag_item'
      end

      banner "knife data bag show BAG [ITEM] (options)"
      category "data bag"

      def run
        display = case @name_args.length
        when 2 # Bag and Item names provided
          secret = encryption_secret_provided_ignore_encrypt_flag? ? read_secret : nil
          raw_data = Chef::DataBagItem.load(@name_args[0], @name_args[1]).raw_data
          encrypted = encrypted?(raw_data)

          if encrypted && secret
            # Users do not need to pass --encrypt to read data, we simply try to use the provided secret
            ui.info("Encrypted data bag detected, decrypting with provided secret.")
            raw = Chef::EncryptedDataBagItem.load(@name_args[0],
                                                  @name_args[1],
                                                  secret)
            format_for_display(raw.to_hash)
          elsif encrypted && !secret
            ui.warn("Encrypted data bag detected, but no secret provided for decoding.  Displaying encrypted data.")
            format_for_display(raw_data)
          else
            ui.info("Unencrypted data bag detected, ignoring any provided secret options.")
            format_for_display(raw_data)
          end

        when 1 # Only Bag name provided
          format_list_for_display(Chef::DataBag.load(@name_args[0]))
        else
          stdout.puts opt_parser
          exit(1)
        end
        output(display)
      end

    end
  end
end
