drnic/inception-server

require "readwritesettings"

module Inception::CliHelpers
  module Settings
    include FileUtils
    
    CONFIG_DIRECTORY = ".inception_server"

    # The base directory for holding the manifest settings file
    # and private keys
    #
    # Defaults to ~/.inception_server; and can be overridden with either:
    # * $SETTINGS - to a folder (supported method)
    def settings_dir
      @settings_dir ||= local_settings || File.expand_path(ENV["SETTINGS"] || "~/#{CONFIG_DIRECTORY}")
    end

    def settings_ssh_dir
      File.join(settings_dir, "ssh")
    end

    def settings_path
      @settings_path ||= File.join(settings_dir, "settings.yml")
    end

    def settings
      @settings ||= begin
        unless File.exists?(settings_path)
          mkdir_p(settings_ssh_dir)
          File.open(settings_path, "w") { |file| file << "--- {}" }
        end
        chmod(0600, settings_path)
        chmod(0700, settings_ssh_dir) if File.directory?(settings_ssh_dir)
        ReadWriteSettings.new(settings_path)
      end
    end

    # Saves current nested ReadWriteSettings into pure Hash-based YAML file
    # Recreates accessors on ReadWriteSettings object (since something has changed)
    def save_settings!
      File.open(settings_path, "w") { |f| f << settings.to_nested_hash.to_yaml }
      settings.create_accessors!
    end

    def reload_settings!
      @settings = nil
      settings
    end

    def migrate_old_settings
      settings
    end

    def local_settings
      path = File.join(Dir.pwd, CONFIG_DIRECTORY)
      Dir.exists?(path) ? path : nil
    end

  end
end