module CKEditor5::Rails::Presets::Concerns::PluginMethods

def external_plugin(name, **kwargs)
  register_plugin(Editor::PropsExternalPlugin.new(name, **kwargs))
end

def inline_plugin(name, code)
  if code.match?(/export default/)
    raise UnsupportedESModuleError,
          'Inline plugins must not use ES module syntax!' \
          'Use async async imports instead!'
  end
  unless code.match?(/return class(\s+\w+)?\s+extends\s+Plugin/)
    raise MissingInlinePluginError,
          'Plugin code must return a class that extends Plugin!'
  end
  plugin = Editor::PropsInlinePlugin.new(name, code)
  plugin.compress! unless disallow_inline_plugin_compression
  register_plugin(plugin)
end

def looks_like_inline_plugin?(plugin)
  plugin.respond_to?(:code) && plugin.code.present?
end

def plugin(name, **kwargs)
  premium(true) if kwargs[:premium] && respond_to?(:premium)
  register_plugin(PluginsBuilder.create_plugin(name, **kwargs))
end

def plugins(*names, **kwargs, &block)
  config[:plugins] ||= []
  names.each { |name| plugin(name, **kwargs) } unless names.empty?
  builder = PluginsBuilder.new(config[:plugins])
  builder.instance_eval(&block) if block_given?
  builder
end

def register_plugin(plugin_obj)
  if disallow_inline_plugins && looks_like_inline_plugin?(plugin_obj)
    raise DisallowedInlinePluginError, 'Inline plugins are not allowed here.'
  end
  config[:plugins] ||= []
  config[:plugins] << plugin_obj
  plugin_obj
end