class Lookbook::PreviewController

def default_preview_layout
  Lookbook.config.preview_layout
end

def determine_layout(layout_override = nil, prepend_views: true)
  return {} unless defined?(Rails.root)
  layout_declaration = {}
  if !layout_override.nil?
    # Allow component-level override, even if false (thus no layout rendered)
    layout_declaration[:layout] = layout_override
  elsif default_preview_layout.present?
    layout_declaration[:layout] = default_preview_layout
  end
  prepend_application_view_paths if layout_declaration[:layout].present? && prepend_views
  layout_declaration
end

def prepend_application_view_paths
  prepend_view_path Rails.root.join("app/views") if defined?(Rails.root)
end

def prepend_preview_scenarios_view_path
  prepend_view_path(Engine.preview_paths)
end

def set_locale(&block)
  I18n.with_locale(params[:locale] || I18n.default_locale, &block)
end