RoboticCheese/plex-home-theater-chef

# Encoding: UTF-8
#
# Cookbook Name:: plex-home-theater
# Library:: plex_home_theater_app_mac_os_x
#
# Copyright 2015 Jonathan Hartman
#
# 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 'net/http'
require_relative 'resource_plex_home_theater_app'

class Chef
  class Resource
    # A custom resource for Plex Home Theater for Mac OS X.
    #
    # @author Jonathan Hartman <j@p4nt5.com>
    class PlexHomeTheaterAppMacOsX < PlexHomeTheaterApp
      URL ||= 'https://plex.tv/downloads'.freeze
      PATH ||= '/Applications/Plex Home Theater.app'.freeze

      provides :plex_home_theater_app, platform_family: 'mac_os_x'

      #
      # Download the Plex package from the remote server and install it. Plex
      # for OS X is distributed as a .zip file, so a regular package resource
      # won't do the job here.
      #
      action :install do
        remote_file download_path do
          source source_path
          action :create
          only_if { !::File.exist?(PATH) }
        end
        execute "unzip -d /Applications #{download_path}" do
          action :run
          creates PATH
        end
      end

      #
      # Clear out the application directory itself plus the support and log
      # directories.
      #
      action :remove do
        [
          PATH,
          ::File.expand_path('~/Library/Application Support/Plex Home Theater')
        ].each do |d|
          directory d do
            recursive true
            action :delete
          end
        end
        file ::File.expand_path('~/Library/Logs/Plex Home Theater.log') do
          action :delete
        end
      end

      #
      # Construct a local path to download the package file to.
      #
      # @return [String] a download path on the local filesystem
      #
      def download_path
        ::File.join(Chef::Config[:file_cache_path],
                    ::File.basename(source_path))
      end

      #
      # Do a GET on the Plex download page and pull out the OS X download
      # link.
      #
      # @return [String] the URL of the OS X .zip package
      #
      def source_path
        @source_path ||= source || begin
          u = URI.parse(URL)
          opts = { use_ssl: u.scheme == 'https',
                   ca_file: Chef::Config[:ssl_ca_file] }
          body = Net::HTTP.start(u.host, u.port, opts) { |h| h.get(u) }.body
          regex = Regexp.new('https://downloads\.plex\.tv/' \
                             'plex-home-theater/.*/' \
                             'PlexHomeTheater.*-macosx-x86_64.zip')
          body.match(regex).to_s
        end
      end
    end
  end
end