# frozen_string_literal: true

module Primer
  module Beta
    # Use `Truncate` to shorten overflowing text with an ellipsis.
    class Truncate < Primer::Component
      status :beta

      # Text slot used for the truncated text.
      #
      # @param priority [Boolean] if true, the text will be given priority
      # @param expandable [Boolean] if true, the text will expand on hover or focus
      # @param max_width [Integer] if provided, the text will be truncated at a maximum width
      # @param system_arguments [Hash] <%= link_to_system_arguments_docs %>
      renders_many :items, "TruncateText"

      # @param system_arguments [Hash] <%= link_to_system_arguments_docs %>
      def initialize(**system_arguments)
        @system_arguments = system_arguments
        @system_arguments[:tag] = system_arguments[:tag] || :span
        @system_arguments[:classes] = class_names(
          "Truncate",
          system_arguments[:classes]
        )
      end

      def before_render
        return unless content.present? && items.empty?

        with_item { content }
      end

      def render?
        items?
      end

      # This component is part of `Primer::Beta::Truncate` and should not be
      # used as a standalone component.
      class TruncateText < Primer::Component
        def initialize(priority: false, expandable: false, max_width: nil, **system_arguments)
          @system_arguments = system_arguments
          @system_arguments[:tag] = system_arguments[:tag] || :span
          @system_arguments[:classes] = class_names(
            "Truncate-text",
            system_arguments[:classes],
            "Truncate-text--primary": priority,
            "Truncate-text--expandable": expandable
          )

          @system_arguments[:style] = join_style_arguments(@system_arguments[:style], "max-width: #{max_width}px;") unless max_width.nil?
        end

        def call
          render(Primer::BaseComponent.new(**@system_arguments)) do
            content
          end
        end
      end
    end
  end
end