module Lookbook::ComponentHelper

def build_tag_values(*args)
  tag_values = []
  args.each do |tag_value|
    case tag_value
    when Hash
      tag_value.each do |key, val|
        tag_values << key.to_s if val && key.present?
      end
    when Array
      tag_values.concat build_tag_values(*tag_value)
    else
      tag_values << tag_value.to_s if tag_value.present?
    end
  end
  tag_values
end

def class_names(*args)
  tokens = build_tag_values(*args).flat_map { |value| value.to_s.split(/\s+/) }.uniq
  safe_join(tokens, " ")
end

def code(language = :html, **attrs, &block)
  attrs[:language] ||= language
  lookbook_render :code, **attrs, &block
end

def component_class(ref)
  klass = COMPONENT_CLASSES[ref]
  if klass.nil?
    ref = ref.to_s.tr("-", "_")
    class_namespace = ref.camelize
    begin
      klass = "Lookbook::#{class_namespace}::Component".constantize
    rescue
      klass = "Lookbook::#{class_namespace}Component".constantize
    end
    COMPONENT_CLASSES[ref] = klass
  end
  klass
end

def icon(name, **attrs)
  lookbook_render :icon, name: name, **attrs
end

def lookbook_render(ref, **attrs, &block)
  comp = if ref.is_a? ViewComponent::Base
    ref
  else
    klass = component_class(ref)
    attrs.key?(:content) ? klass.new(**attrs.except(:content)).with_content(attrs[:content]) : klass.new(**attrs)
  end
  if block && !attrs.key?(:content)
    public_send render_method_name, comp, &block
  else
    public_send render_method_name, comp
  end
end

def lookbook_tag(tag = :div, **attrs, &block)
  lookbook_render :tag, tag: tag, **attrs, &block
end

def render_method_name
  if Rails.application.config.view_component.render_monkey_patch_enabled || Rails.version.to_f >= 6.1
    :render
  else
    :render_component
  end
end