class Guard::Cli::Environments::Valid

def initialize(options)
  @options = options
end

def initialize_guardfile(plugin_names = [])
  bare = @options[:bare]
  Guard.init(@options)
  session = Guard.state.session
  generator = Guardfile::Generator.new
  begin
    Guardfile::Evaluator.new(session.evaluator_options).evaluate
  rescue Guardfile::Evaluator::NoGuardfileError
    generator.create_guardfile
  rescue Guard::Guardfile::Evaluator::NoPluginsError
    # Do nothing - just the error
  end
  return 0 if bare # 0 - exit code
  # Evaluate because it might have existed and creating was skipped
  begin
    Guardfile::Evaluator.new(session.evaluator_options).evaluate
  rescue Guard::Guardfile::Evaluator::NoPluginsError
  end
  if plugin_names.empty?
    generator.initialize_all_templates
  else
    plugin_names.each do |plugin_name|
      generator.initialize_template(plugin_name)
    end
  end
  # TODO: capture exceptions to show msg and return exit code on
  # failures
  0 # exit code
end

def start_guard
  # TODO: just to make sure tests are ok
  Bundler.new.verify unless @options[:no_bundler_warning]
  Guard.start(@options)
rescue Dsl::Error,
       Guardfile::Evaluator::NoPluginsError,
       Guardfile::Evaluator::NoGuardfileError,
       Guardfile::Evaluator::NoCustomGuardfile => e
  # catch to throw message instead of call stack
  UI.error(e.message)
  abort
end