module ViewComponent::UseHelpers

def define_helper(helper_method:, source:)
  return "__vc_original_view_context.#{helper_method}(*args, &block)" unless source.present?
  "#{source}.instance_method(:#{helper_method}).bind(self).call(*args, &block)"
end

def full_helper_method_name(helper_method, prefix: false, source: nil)
  return helper_method unless prefix.present?
  if !!prefix == prefix
    "#{source.to_s.underscore}_#{helper_method}"
  else
    "#{prefix}_#{helper_method}"
  end
end

def use_helper(helper_method, from: nil, prefix: false)
  helper_method_name = full_helper_method_name(helper_method, prefix: prefix, source: from)
  class_eval(<<-RUBY, __FILE__, __LINE__ + 1)
    def #{helper_method_name}(*args, &block)
      raise HelpersCalledBeforeRenderError if view_context.nil?
      #{define_helper(helper_method: helper_method, source: from)}
    end
  RUBY
  ruby2_keywords(helper_method_name) if respond_to?(:ruby2_keywords, true)
end

def use_helpers(*args, from: nil, prefix: false)
  args.each { |helper_method| use_helper(helper_method, from: from, prefix: prefix) }
end