begin
  require 'vagrant'
rescue LoadError
  raise 'The Vagrant Rimu plugin must be run within Vagrant.'
end

if Vagrant::VERSION < '1.5.0'
  raise 'The Vagrant Rimu plugin is only compatible with Vagrant 1.5+'
end

module VagrantPlugins
  module Rimu
    class Plugin < Vagrant.plugin('2')
      name 'Rimu'
      description <<-DESC
      This plugin installs a provider that allows Vagrant to manage
      virtual machines using Rimuhosting's API.
      DESC

      config(:rimu, :provider) do
        require_relative "config"
        Config
      end

      provider(:rimu, {:box_optional => true, :parallel => true}) do
        # Setup logging and i18n
        setup_logging
        setup_i18n
        # Return the provider
        require_relative "provider"
        Provider
      end

      command(:rimu) do
        require_relative "commands/root"
        Commands::Root
      end

      command(:rebuild) do
        require_relative "commands/rebuild"
        Commands::Rebuild
      end

      # This initializes the internationalization strings.
      def self.setup_i18n
        I18n.load_path << File.expand_path("locales/en.yml", Rimu.source_root)
        I18n.reload!
      end

      # This sets up our log level to be whatever VAGRANT_LOG is.
      def self.setup_logging
        require "log4r"

        level = nil
        begin
          level = Log4r.const_get(ENV["VAGRANT_LOG"].upcase)
        rescue NameError
          # This means that the logging constant wasn't found,
          # which is fine. We just keep `level` as `nil`. But
          # we tell the user.
          level = nil
        end

        # Some constants, such as "true" resolve to booleans, so the
        # above error checking doesn't catch it. This will check to make
        # sure that the log level is an integer, as Log4r requires.
        level = nil if !level.is_a?(Integer)

        # Set the logging level on all "vagrant" namespaced
        # logs as long as we have a valid level.
        if level
          logger = Log4r::Logger.new("vagrant_rimu")
          logger.outputters = Log4r::Outputter.stderr
          logger.level = level
          logger = nil
        end
      end
    end
  end
end