18F/identity-idp

# frozen_string_literal: true

class ButtonComponent < BaseComponent
  attr_reader :url,
              :method,
              :icon,
              :big,
              :wide,
              :full_width,
              :outline,
              :unstyled,
              :danger,
              :tag_options

  def initialize(
    url: nil,
    method: nil,
    icon: nil,
    big: false,
    wide: false,
    full_width: false,
    outline: false,
    unstyled: false,
    danger: false,
    **tag_options
  )
    @url = url
    @method = method
    @icon = icon
    @big = big
    @wide = wide
    @full_width = full_width
    @outline = outline
    @unstyled = unstyled
    @danger = danger
    @tag_options = tag_options
  end

  def css_class
    classes = ['usa-button', *tag_options[:class]]
    classes << 'usa-button--big' if big
    classes << 'usa-button--wide' if wide
    classes << 'usa-button--full-width' if full_width
    classes << 'usa-button--outline' if outline
    classes << 'usa-button--unstyled' if unstyled
    classes << 'usa-button--danger' if danger
    classes
  end

  def icon_content
    render IconComponent.new(icon:) if icon
  end

  def content
    original_content = super
    if original_content.present? && icon.present?
      # Content templates may include leading whitespace, which interferes with the layout when an
      # icon is present. This can be solved in CSS using Flexbox, but doing so for all buttons may
      # have unintended consequences.
      trimmed_content = original_content.lstrip
      trimmed_content = sanitize(trimmed_content) if original_content.html_safe?
      trimmed_content
    else
      original_content
    end
  end

  private

  def action
    @action ||= begin
      if url
        if method && method != :get
          ->(**tag_options, &block) { button_to(url, method:, **tag_options, &block) }
        else
          ->(**tag_options, &block) { link_to(url, **tag_options, &block) }
        end
      else
        ->(**tag_options, &block) { button_tag(**tag_options, &block) }
      end
    end
  end
end