class Guard::Guardfile::Generator

def _ui(*args)
  UI.send(*args)
end

def create_guardfile
  path = Pathname.new("Guardfile").expand_path
  if path.exist?
    _ui(:error, "Guardfile already exists at #{path}")
    abort
  end
  _ui(:info, "Writing new Guardfile to #{path}")
  FileUtils.cp(GUARDFILE_TEMPLATE, path.to_s)
end

def initialize_all_templates
  PluginUtil.plugin_names.each { |g| initialize_template(g) }
end

def initialize_template(plugin_name)
  guardfile = Pathname.new("Guardfile")
  plugin_util = PluginUtil.new(plugin_name)
  # TODO: change to "valid?" method
  plugin_class = plugin_util.plugin_class(fail_gracefully: true)
  if plugin_class
    begin
      plugin_util.add_to_guardfile
    rescue Errno::ENOENT => error
      # TODO: refactor
      template = plugin_class.template(plugin_util.plugin_location)
      _ui(:error, "Found class #{plugin_class} but loading it's template"\
        "failed: '#{template}'")
      _ui(:error, "Error is: #{error}")
      return
    end
    return
  end
  template_code = (HOME_TEMPLATES + plugin_name).read
  guardfile.binwrite(format("\n%s\n", template_code), open_args: ["a"])
  _ui(:info, format(INFO_TEMPLATE_ADDED, plugin_name))
rescue Errno::ENOENT
  fail NoSuchPlugin, plugin_name.downcase
end