class ViewComponent::Config

def default_generate_options
  options = ActiveSupport::OrderedOptions.new(false)
  options.preview_path = ""
  options
end

def default_preview_paths
  (default_rails_preview_paths + default_rails_engines_preview_paths).uniq
end

def default_rails_engines_preview_paths
  return [] unless defined?(Rails::Engine)
  registered_rails_engines_with_previews.map do |descendant|
    "#{descendant.root}/test/components/previews"
  end
end

def default_rails_preview_paths
  return [] unless defined?(Rails.root) && Dir.exist?("#{Rails.root}/test/components/previews")
  ["#{Rails.root}/test/components/previews"]
end

def defaults
  ActiveSupport::OrderedOptions.new.merge!({
    generate: default_generate_options,
    preview_controller: "ViewComponentsController",
    preview_route: "/rails/view_components",
    show_previews_source: false,
    instrumentation_enabled: false,
    use_deprecated_instrumentation_name: true,
    render_monkey_patch_enabled: true,
    view_component_path: "app/components",
    component_parent_class: nil,
    show_previews: Rails.env.development? || Rails.env.test?,
    preview_paths: default_preview_paths,
    test_controller: "ApplicationController",
    default_preview_layout: nil,
    capture_compatibility_patch_enabled: false
  })
end

def initialize
  @config = self.class.defaults
end

def registered_rails_engines_with_previews
  Rails::Engine.descendants.select do |descendant|
    defined?(descendant.root) && Dir.exist?("#{descendant.root}/test/components/previews")
  end
end