class W3DHub
  class States
    class Interface < CyberarmEngine::GuiState
      APPLICATIONS_UPDATE_INTERVAL = 10 * 60 * 1000 # ten minutes
      SERVER_LIST_UPDATE_INTERVAL = 5 * 60 * 1000 # five minutes

      attr_accessor :interface_task_update_pending

      @@instance = nil

      def self.instance
        @@instance
      end

      def setup
        @@instance = self

        window.show_cursor = true

        @account = @options[:account]
        @service_status = @options[:service_status]
        @applications = @options[:applications]

        @applications_expire = Gosu.milliseconds + APPLICATIONS_UPDATE_INTERVAL # ten minutes
        @server_list_expire = Gosu.milliseconds + SERVER_LIST_UPDATE_INTERVAL # 5 minutes

        @interface_task_update_pending = nil

        @page = nil
        @pages = {}

        Store.application_manager.auto_import # unless Store.offline_mode

        theme(W3DHub::THEME)

        @interface_container = stack(width: 1.0, height: 1.0, border_thickness: 1, border_color: W3DHub::BORDER_COLOR, background_image: "#{GAME_ROOT_PATH}/media/banners/background.png", background_image_color: 0xff_525252, background_image_mode: :fill) do
          background 0xff_252525

          @header_container = flow(width: 1.0, height: 84, padding: 4, border_thickness_bottom: 1, border_color_bottom: W3DHub::BORDER_COLOR) do
            flow(width: 148, height: 1.0) do
              flow(fill: true)
              image "#{GAME_ROOT_PATH}/media/icons/app.png", height: 84
              flow(fill: true)
            end

            @navigation_container = stack(fill: true, height: 1.0) do
              @nav_padding_top_container = flow(fill: true)

              flow(width: 1.0, height: 36) do
                # background 0xff_666666

                link I18n.t(:"interface.games").upcase, text_size: 34, font: BOLD_FONT do
                  page(W3DHub::Pages::Games)
                end

                link I18n.t(:"interface.servers").upcase, text_size: 34, font: BOLD_FONT, margin_left: 12 do
                  page(W3DHub::Pages::ServerBrowser)
                end

                link I18n.t(:"interface.community").upcase, text_size: 34, font: BOLD_FONT, margin_left: 12 do
                  page(W3DHub::Pages::Community)
                end

                link I18n.t(:"interface.downloads").upcase, text_size: 34, font: BOLD_FONT, margin_left: 12 do
                  page(W3DHub::Pages::DownloadManager)
                end

                link I18n.t(:"interface.settings").upcase, text_size: 34, font: BOLD_FONT, margin_left: 12 do
                  page(W3DHub::Pages::Settings)
                end
              end

              @nav_padding_bottom_container = flow(fill: true)

              # Installer task display
              @application_taskbar_container = flow(width: 1.0, height: 0.5) do
                stack(width: 1.0, height: 1.0, margin_left: 16, margin_right: 16) do
                  flow(width: 1.0, height: 0.65) do
                    @application_taskbar_label = para "", fill: true, text_wrap: :none
                    @application_taskbar_status_label = para "", width: 0.4, min_width: 256, text_align: :right, text_wrap: :none
                  end

                  @application_taskbar_progressbar = progress fraction: 0.0, height: 2, width: 1.0
                end
              end
            end

            @account_container = flow(width: 256, height: 1.0) do
              if Store.offline_mode
                stack(width: 1.0, height: 1.0) do
                  flow(fill: true)

                  title "<b>OFFLINE</b>", text_wrap: :none, width: 1.0, text_align: :center

                  flow(fill: true)
                end
              else
                stack(width: 1.0, height: 1.0) do
                  tagline "<b>#{I18n.t(:"interface.not_logged_in")}</b>", text_wrap: :none

                  flow(width: 1.0) do
                    link(I18n.t(:"interface.log_in"), text_size: 22, width: 0.5) { page(W3DHub::Pages::Login) }
                    link I18n.t(:"interface.register"), text_size: 22, width: 0.49 do
                      W3DHub.url("https://secure.w3dhub.com/forum/index.php?app=core&module=global&section=register")
                    end
                  end
                end
              end
            end
          end

          @content_container = flow(width: 1.0, fill: true) do
          end
        end

        if Store.account
          page(W3DHub::Pages::Login)
        else
          page(W3DHub::Pages::Games)
        end

        hide_application_taskbar
      end

      def draw
        super

        @page&.draw
      end

      def update
        super

        @page&.update

        update_interface_task_status(@interface_task_update_pending) if @interface_task_update_pending

        if Gosu.milliseconds >= @applications_expire
          @applications_expire = Gosu.milliseconds + 30_000

          Api.on_thread(:applications) do |applications|
            if applications
              @applications_expire = Gosu.milliseconds + APPLICATIONS_UPDATE_INTERVAL # ten minutes

              Store.applications = applications

              # TODO: Signal Games and ServerBrowser that applications have been updated
            end
          end
        end

        if Gosu.milliseconds >= @server_list_expire
          @server_list_expire = Gosu.milliseconds + 30_000

          Api.on_thread(:server_list, 2) do |list|
            if list
              @server_list_expire = Gosu.milliseconds + SERVER_LIST_UPDATE_INTERVAL # five minutes

              Store.server_list_last_fetch = Gosu.milliseconds

              Api::ServerListUpdater.instance.refresh_server_list(list)

              BackgroundWorker.foreground_job(-> {}, ->(_) { States::Interface.instance&.update_server_browser(nil, :refresh_all) })
            end
          end
        end
      end

      def button_down(id)
        super

        @page&.button_down(id)
      end

      def button_up(id)
        super

        @page&.button_up(id)
      end

      def body
        @content_container
      end

      def page(klass, options = {})
        body.clear

        @page.blur if @page

        @pages[klass] = klass.new(host: self) unless @pages[klass]
        @page = @pages[klass]

        @page.options = options
        @page.setup
        @page.focus
      end

      def current_page
        @page
      end

      def update_server_browser(server, mode = :update)
        return unless @page.is_a?(Pages::ServerBrowser)

        @page.refresh_server_list(server, mode)
      end

      def update_server_ping(server)
        return unless @page.is_a?(Pages::ServerBrowser)

        @page.update_server_ping(server)
      end

      def show_application_taskbar
        @nav_padding_top_container.hide
        @nav_padding_bottom_container.hide
        @application_taskbar_container.show
      end

      def hide_application_taskbar
        @application_taskbar_container.hide
        @nav_padding_top_container.show
        @nav_padding_bottom_container.show
      end

      def update_interface_task_status(task)
        @application_taskbar_label.value = task.status.label
        @application_taskbar_status_label.value = "#{task.status.value} (#{format("%.2f%%", task.status.progress.clamp(0.0, 1.0) * 100.0)})"
        @application_taskbar_progressbar.value = task.status.progress.clamp(0.0, 1.0)

        return unless @page.is_a?(Pages::DownloadManager)

        operation_info = @page.operation_info
        operation_step = @page.operation_info[:___step]

        if task.status.step != operation_step
          @page.regenerate(task)

          return
        end

        task.status.operations.each do |key, operation|

          name_ = operation_info["#{key}_name"]
          status_ = operation_info["#{key}_status"]
          progress_ = operation_info["#{key}_progress"]

          next if name_.value == operation.label &&
                  status_.value == operation.value &&
                  progress_.value == operation.value

          name_.value = operation.label if operation.label
          status_.value = operation.value if operation.value

          if operation.progress
            if operation.progress == Float::INFINITY
              progress_.type = :marquee unless progress_.type == :marquee
            else
              progress_.type = :linear unless progress_.type == :linear
              progress_.value = operation.progress.clamp(0.0, 1.0)
            end
          end
        end
      end
    end
  end
end