require_relative '../base'
require_relative 'header/navigation'

module CCS
  module Components
    module GovUK
      # = GOV.UK Header
      #
      # This is used to generate the header component from the
      # {https://design-system.service.gov.uk/components/header GDS - Components - Header}
      #
      # @!attribute [r] navigation
      #   @return [Navigation] The initialised navigation section
      # @!attribute [r] service
      #   @return [Hash] The options for the service section

      class Header < Base
        private

        attr_reader :navigation, :service

        public

        # @param navigation [Hash] options for the navigation section of the header.
        #                          See {Components::GovUK::Header::Navigation#initialize Navigation#initialize} for details of the options.
        # @param menu_button [Hash] options for the menu button in the header.
        #                           See {Components::GovUK::Header::Navigation#initialize Navigation#initialize} for details of the options.
        # @param service [Hash] options for the service name
        # @param options [Hash] options that will be used in customising the HTML
        #
        # @option service [String] :name the name of the service, included in the header
        # @option service [String] :href URL for the service name anchor
        #
        # @option options [String] :classes additional CSS classes for the header HTML
        # @option options [String] :container_classes classes for the container
        # @option options [String] :homepage_url URL of the homepage. Defaults to +/+
        # @option options [String] :product_name product name, used when the product name follows on directly from ‘GOV.UK
        # @option options [Boolean] :use_tudor_crown flag to use the new tudor crown for the GOV.UK Logo
        # @option options [Hash] :attributes additional attributes that will added as part of the header HTML

        def initialize(navigation: nil, menu_button: nil, service: nil, **options)
          super(**options)

          @options[:attributes][:role] = 'banner'
          @options[:container_classes] ||= 'govuk-width-container'
          @options[:homepage_url] ||= '/'
          @options[:use_tudor_crown] = true if @options[:use_tudor_crown].nil?

          @navigation = Navigation.new(navigation: navigation, menu_button: menu_button, context: @context) if navigation && navigation[:items].present?
          @service = service
        end

        # Generates the HTML for the GOV.UK Header component
        #
        # @return [ActiveSupport::SafeBuffer]

        def render
          tag.header(**options[:attributes]) do
            tag.div(class: "govuk-header__container #{options[:container_classes]}") do
              concat(header_logo)
              if service || navigation
                concat(tag.div(class: 'govuk-header__content') do
                  concat(header_service_name) if service
                  concat(navigation.render) if navigation
                end)
              end
            end
          end
        end

        # The default attributes for the breadcrumbs

        DEFAULT_ATTRIBUTES = { class: 'govuk-header', data: { module: 'govuk-header' } }.freeze

        private

        # Generates the logo for header
        #
        # @return [ActiveSupport::SafeBuffer]

        def header_logo
          tag.div(class: 'govuk-header__logo') do
            link_to(options[:homepage_url], class: 'govuk-header__link govuk-header__link--homepage') do
              concat(options[:use_tudor_crown] ? tudor_crown : st_edwards_crown)
              concat(tag.span(options[:product_name], class: 'govuk-header__product-name')) if options[:product_name]
            end
          end
        end

        # Generates the service name section
        #
        # @return [ActiveSupport::SafeBuffer]

        def header_service_name
          if service[:href]
            link_to(service[:name], service[:href], class: 'govuk-header__link govuk-header__service-name')
          else
            tag.span(service[:name], class: 'govuk-header__service-name')
          end
        end

        # Generates the GOV.UK log with St. Edwards Crown
        #
        # @return [ActiveSupport::SafeBuffer]

        def st_edwards_crown
          tag.svg(class: 'govuk-header__logotype', xmlns: 'http://www.w3.org/2000/svg', height: '30', width: '152', aria: { label: 'GOV.UK' }, focusable: 'false', viewBox: '0 0 152 30', role: 'img') do
            concat(tag.title('GOV.UK'))
            concat(tag.path(d: 'M6.7 12.2c1 .4 2.1-.1 2.5-1s-.1-2.1-1-2.5c-1-.4-2.1.1-2.5 1-.4 1 0 2.1 1 2.5m-4.3 2.5c1 .4 2.1-.1 2.5-1s-.1-2.1-1-2.5c-1-.4-2.1.1-2.5 1-.5 1 0 2.1 1 2.5m-1.3 4.8c1 .4 2.1-.1 2.5-1 .4-1-.1-2.1-1-2.5-1-.4-2.1.1-2.5 1-.4 1 0 2.1 1 2.5m10.4-5.8c1 .4 2.1-.1 2.5-1s-.1-2.1-1-2.5c-1-.4-2.1.1-2.5 1s0 2.1 1 2.5m17.4-1.5c-1 .4-2.1-.1-2.5-1s.1-2.1 1-2.5c1-.4 2.1.1 2.5 1 .5 1 0 2.1-1 2.5m4.3 2.5c-1 .4-2.1-.1-2.5-1s.1-2.1 1-2.5c1-.4 2.1.1 2.5 1 .5 1 0 2.1-1 2.5m1.3 4.8c-1 .4-2.1-.1-2.5-1-.4-1 .1-2.1 1-2.5 1-.4 2.1.1 2.5 1 .4 1 0 2.1-1 2.5m-10.4-5.8c-1 .4-2.1-.1-2.5-1s.1-2.1 1-2.5c1-.4 2.1.1 2.5 1s0 2.1-1 2.5m-5.3-4.9 2.4 1.3V6.5l-2.4.8c-.1-.1-.1-.2-.2-.2s1-3 1-3h-3.4l1 3c-.1.1-.2.1-.2.2-.1.1-2.4-.7-2.4-.7v3.5L17 8.8c-.1.1 0 .2.1.3l-1.4 4.2c-.1.2-.1.4-.1.7 0 1.1.8 2.1 1.9 2.2h.6C19.2 16 20 15.1 20 14c0-.2 0-.4-.1-.7l-1.4-4.2c.2-.1.3-.2.3-.3m-1 20.3c4.6 0 8.9.3 12.8.9 1.1-4.6 2.4-7.2 3.8-9.1l-2.6-.9c.3 1.3.3 1.9 0 2.8-.4-.4-.8-1.2-1.1-2.4l-1.2 4.2c.8-.5 1.4-.9 2-.9-1.2 2.6-2.7 3.2-3.6 3-1.2-.2-1.7-1.3-1.5-2.2.3-1.3 1.6-1.6 2.2-.1 1.2-2.4-.8-3.1-2.1-2.4 1.9-1.9 2.2-3.6.6-5.7-2.2 1.7-2.2 3.3-1.2 5.6-1.3-1.5-3.3-.7-2.5 1.7.9-1.4 2.1-.5 2 .8-.2 1.2-1.7 2.1-3.7 2-2.8-.2-3-2.2-3-3.7.7-.1 1.9.5 3 2l.4-4.4c-1.1 1.2-2.2 1.4-3.3 1.4.4-1.2 2.1-3.1 2.1-3.1h-5.5s1.8 2 2.1 3.1c-1.1 0-2.2-.3-3.3-1.4l.4 4.4c1.1-1.5 2.3-2.1 3-2-.1 1.6-.2 3.5-3 3.7-1.9.2-3.5-.8-3.7-2-.2-1.3 1-2.2 1.9-.8.7-2.4-1.3-3.1-2.6-1.7 1-2.3 1-4-1.2-5.6-1.6 2.1-1.3 3.8.6 5.7-1.3-.7-3.2 0-2.1 2.4.6-1.5 1.9-1.1 2.2.1.2.9-.4 1.9-1.5 2.2-1 .2-2.5-.5-3.7-3 .7 0 1.3.4 2 .9L5 20.4c-.3 1.2-.7 1.9-1.2 2.4-.3-.8-.2-1.5 0-2.8l-2.6.9C2.7 22.8 4 25.4 5.1 30c3.8-.5 8.2-.9 12.7-.9m30.5-11.5c0 .9.1 1.7.3 2.5.2.8.6 1.5 1 2.2.5.6 1 1.1 1.7 1.5.7.4 1.5.6 2.5.6.9 0 1.7-.1 2.3-.4s1.1-.7 1.5-1.1c.4-.4.6-.9.8-1.5.1-.5.2-1 .2-1.5v-.2h-5.3v-3.2h9.4V28H59v-2.5c-.3.4-.6.8-1 1.1-.4.3-.8.6-1.3.9-.5.2-1 .4-1.6.6s-1.2.2-1.8.2c-1.5 0-2.9-.3-4-.8-1.2-.6-2.2-1.3-3-2.3-.8-1-1.4-2.1-1.8-3.4-.3-1.4-.5-2.8-.5-4.3s.2-2.9.7-4.2c.5-1.3 1.1-2.4 2-3.4.9-1 1.9-1.7 3.1-2.3 1.2-.6 2.6-.8 4.1-.8 1 0 1.9.1 2.8.3.9.2 1.7.6 2.4 1s1.4.9 1.9 1.5c.6.6 1 1.3 1.4 2l-3.7 2.1c-.2-.4-.5-.9-.8-1.2-.3-.4-.6-.7-1-1-.4-.3-.8-.5-1.3-.7-.5-.2-1.1-.2-1.7-.2-1 0-1.8.2-2.5.6-.7.4-1.3.9-1.7 1.5-.5.6-.8 1.4-1 2.2-.3.8-.4 1.9-.4 2.7zm36.4-4.3c-.4-1.3-1.1-2.4-2-3.4-.9-1-1.9-1.7-3.1-2.3-1.2-.6-2.6-.8-4.2-.8s-2.9.3-4.2.8c-1.1.6-2.2 1.4-3 2.3-.9 1-1.5 2.1-2 3.4-.4 1.3-.7 2.7-.7 4.2s.2 2.9.7 4.2c.4 1.3 1.1 2.4 2 3.4.9 1 1.9 1.7 3.1 2.3 1.2.6 2.6.8 4.2.8 1.5 0 2.9-.3 4.2-.8 1.2-.6 2.3-1.3 3.1-2.3.9-1 1.5-2.1 2-3.4.4-1.3.7-2.7.7-4.2-.1-1.5-.3-2.9-.8-4.2zM81 17.6c0 1-.1 1.9-.4 2.7-.2.8-.6 1.6-1.1 2.2-.5.6-1.1 1.1-1.7 1.4-.7.3-1.5.5-2.4.5-.9 0-1.7-.2-2.4-.5s-1.3-.8-1.7-1.4c-.5-.6-.8-1.3-1.1-2.2-.2-.8-.4-1.7-.4-2.7v-.1c0-1 .1-1.9.4-2.7.2-.8.6-1.6 1.1-2.2.5-.6 1.1-1.1 1.7-1.4.7-.3 1.5-.5 2.4-.5.9 0 1.7.2 2.4.5s1.3.8 1.7 1.4c.5.6.8 1.3 1.1 2.2.2.8.4 1.7.4 2.7v.1zM92.9 28 87 7h4.7l4 15.7h.1l4-15.7h4.7l-5.9 21h-5.7zm28.8-3.6c.6 0 1.2-.1 1.7-.3.5-.2 1-.4 1.4-.8.4-.4.7-.8.9-1.4.2-.6.3-1.2.3-2v-13h4.1v13.6c0 1.2-.2 2.2-.6 3.1s-1 1.7-1.8 2.4c-.7.7-1.6 1.2-2.7 1.5-1 .4-2.2.5-3.4.5-1.2 0-2.4-.2-3.4-.5-1-.4-1.9-.9-2.7-1.5-.8-.7-1.3-1.5-1.8-2.4-.4-.9-.6-2-.6-3.1V6.9h4.2v13c0 .8.1 1.4.3 2 .2.6.5 1 .9 1.4.4.4.8.6 1.4.8.6.2 1.1.3 1.8.3zm13-17.4h4.2v9.1l7.4-9.1h5.2l-7.2 8.4L152 28h-4.9l-5.5-9.4-2.7 3V28h-4.2V7zm-27.6 16.1c-1.5 0-2.7 1.2-2.7 2.7s1.2 2.7 2.7 2.7 2.7-1.2 2.7-2.7-1.2-2.7-2.7-2.7z'))
          end
        end

        # Generates the GOV.UK logo with a Tudor Crown
        #
        # @return [ActiveSupport::SafeBuffer]

        def tudor_crown
          tag.svg(class: 'govuk-header__logotype', xmlns: 'http://www.w3.org/2000/svg', height: '30', width: '148', aria: { label: 'GOV.UK' }, focusable: 'false', viewBox: '0 0 148 30', role: 'img') do
            concat(tag.title('GOV.UK'))
            concat(tag.path(d: 'M22.6 10.4c-1 .4-2-.1-2.4-1-.4-.9.1-2 1-2.4.9-.4 2 .1 2.4 1s-.1 2-1 2.4m-5.9 6.7c-.9.4-2-.1-2.4-1-.4-.9.1-2 1-2.4.9-.4 2 .1 2.4 1s-.1 2-1 2.4m10.8-3.7c-1 .4-2-.1-2.4-1-.4-.9.1-2 1-2.4.9-.4 2 .1 2.4 1s0 2-1 2.4m3.3 4.8c-1 .4-2-.1-2.4-1-.4-.9.1-2 1-2.4.9-.4 2 .1 2.4 1s-.1 2-1 2.4M17 4.7l2.3 1.2V2.5l-2.3.7-.2-.2.9-3h-3.4l.9 3-.2.2c-.1.1-2.3-.7-2.3-.7v3.4L15 4.7c.1.1.1.2.2.2l-1.3 4c-.1.2-.1.4-.1.6 0 1.1.8 2 1.9 2.2h.7c1-.2 1.9-1.1 1.9-2.1 0-.2 0-.4-.1-.6l-1.3-4c-.1-.2 0-.2.1-.3m-7.6 5.7c.9.4 2-.1 2.4-1 .4-.9-.1-2-1-2.4-.9-.4-2 .1-2.4 1s0 2 1 2.4m-5 3c.9.4 2-.1 2.4-1 .4-.9-.1-2-1-2.4-.9-.4-2 .1-2.4 1s.1 2 1 2.4m-3.2 4.8c.9.4 2-.1 2.4-1 .4-.9-.1-2-1-2.4-.9-.4-2 .1-2.4 1s0 2 1 2.4m14.8 11c4.4 0 8.6.3 12.3.8 1.1-4.5 2.4-7 3.7-8.8l-2.5-.9c.2 1.3.3 1.9 0 2.7-.4-.4-.8-1.1-1.1-2.3l-1.2 4c.7-.5 1.3-.8 2-.9-1.1 2.5-2.6 3.1-3.5 3-1.1-.2-1.7-1.2-1.5-2.1.3-1.2 1.5-1.5 2.1-.1 1.1-2.3-.8-3-2-2.3 1.9-1.9 2.1-3.5.6-5.6-2.1 1.6-2.1 3.2-1.2 5.5-1.2-1.4-3.2-.6-2.5 1.6.9-1.4 2.1-.5 1.9.8-.2 1.1-1.7 2.1-3.5 1.9-2.7-.2-2.9-2.1-2.9-3.6.7-.1 1.9.5 2.9 1.9l.4-4.3c-1.1 1.1-2.1 1.4-3.2 1.4.4-1.2 2.1-3 2.1-3h-5.4s1.7 1.9 2.1 3c-1.1 0-2.1-.2-3.2-1.4l.4 4.3c1-1.4 2.2-2 2.9-1.9-.1 1.5-.2 3.4-2.9 3.6-1.9.2-3.4-.8-3.5-1.9-.2-1.3 1-2.2 1.9-.8.7-2.3-1.2-3-2.5-1.6.9-2.2.9-3.9-1.2-5.5-1.5 2-1.3 3.7.6 5.6-1.2-.7-3.1 0-2 2.3.6-1.4 1.8-1.1 2.1.1.2.9-.3 1.9-1.5 2.1-.9.2-2.4-.5-3.5-3 .6 0 1.2.3 2 .9l-1.2-4c-.3 1.1-.7 1.9-1.1 2.3-.3-.8-.2-1.4 0-2.7l-2.9.9C1.3 23 2.6 25.5 3.7 30c3.7-.5 7.9-.8 12.3-.8m28.3-11.6c0 .9.1 1.7.3 2.5.2.8.6 1.5 1 2.2.5.6 1 1.1 1.7 1.5.7.4 1.5.6 2.5.6.9 0 1.7-.1 2.3-.4s1.1-.7 1.5-1.1c.4-.4.6-.9.8-1.5.1-.5.2-1 .2-1.5v-.2h-5.3v-3.2h9.4V28H55v-2.5c-.3.4-.6.8-1 1.1-.4.3-.8.6-1.3.9-.5.2-1 .4-1.6.6s-1.2.2-1.8.2c-1.5 0-2.9-.3-4-.8-1.2-.6-2.2-1.3-3-2.3-.8-1-1.4-2.1-1.8-3.4-.3-1.4-.5-2.8-.5-4.3s.2-2.9.7-4.2c.5-1.3 1.1-2.4 2-3.4.9-1 1.9-1.7 3.1-2.3 1.2-.6 2.6-.8 4.1-.8 1 0 1.9.1 2.8.3.9.2 1.7.6 2.4 1s1.4.9 1.9 1.5c.6.6 1 1.3 1.4 2l-3.7 2.1c-.2-.4-.5-.9-.8-1.2-.3-.4-.6-.7-1-1-.4-.3-.8-.5-1.3-.7-.5-.2-1.1-.2-1.7-.2-1 0-1.8.2-2.5.6-.7.4-1.3.9-1.7 1.5-.5.6-.8 1.4-1 2.2-.3.8-.4 1.9-.4 2.7zM71.5 6.8c1.5 0 2.9.3 4.2.8 1.2.6 2.3 1.3 3.1 2.3.9 1 1.5 2.1 2 3.4s.7 2.7.7 4.2-.2 2.9-.7 4.2c-.4 1.3-1.1 2.4-2 3.4-.9 1-1.9 1.7-3.1 2.3-1.2.6-2.6.8-4.2.8s-2.9-.3-4.2-.8c-1.2-.6-2.3-1.3-3.1-2.3-.9-1-1.5-2.1-2-3.4-.4-1.3-.7-2.7-.7-4.2s.2-2.9.7-4.2c.4-1.3 1.1-2.4 2-3.4.9-1 1.9-1.7 3.1-2.3 1.2-.5 2.6-.8 4.2-.8zm0 17.6c.9 0 1.7-.2 2.4-.5s1.3-.8 1.7-1.4c.5-.6.8-1.3 1.1-2.2.2-.8.4-1.7.4-2.7v-.1c0-1-.1-1.9-.4-2.7-.2-.8-.6-1.6-1.1-2.2-.5-.6-1.1-1.1-1.7-1.4-.7-.3-1.5-.5-2.4-.5s-1.7.2-2.4.5-1.3.8-1.7 1.4c-.5.6-.8 1.3-1.1 2.2-.2.8-.4 1.7-.4 2.7v.1c0 1 .1 1.9.4 2.7.2.8.6 1.6 1.1 2.2.5.6 1.1 1.1 1.7 1.4.6.3 1.4.5 2.4.5zM88.9 28 83 7h4.7l4 15.7h.1l4-15.7h4.7l-5.9 21h-5.7zm28.8-3.6c.6 0 1.2-.1 1.7-.3.5-.2 1-.4 1.4-.8.4-.4.7-.8.9-1.4.2-.6.3-1.2.3-2v-13h4.1v13.6c0 1.2-.2 2.2-.6 3.1s-1 1.7-1.8 2.4c-.7.7-1.6 1.2-2.7 1.5-1 .4-2.2.5-3.4.5-1.2 0-2.4-.2-3.4-.5-1-.4-1.9-.9-2.7-1.5-.8-.7-1.3-1.5-1.8-2.4-.4-.9-.6-2-.6-3.1V6.9h4.2v13c0 .8.1 1.4.3 2 .2.6.5 1 .9 1.4.4.4.8.6 1.4.8.6.2 1.1.3 1.8.3zm13-17.4h4.2v9.1l7.4-9.1h5.2l-7.2 8.4L148 28h-4.9l-5.5-9.4-2.7 3V28h-4.2V7zm-27.6 16.1c-1.5 0-2.7 1.2-2.7 2.7s1.2 2.7 2.7 2.7 2.7-1.2 2.7-2.7-1.2-2.7-2.7-2.7z'))
          end
        end
      end
    end
  end
end