Function ArticleCards

components/guides/ArticleCards.tsx:10–159

()

const PAGE_SIZE = 9
export const ArticleCards = () => {
  const { t } = useTranslation('product_guides')
  const guideTypes: Record<string, string> = t('guide_types')
  const { allTopics, includeGuides } = useProductGuidesContext()
  const [numVisible, setNumVisible] = useState(PAGE_SIZE)
  const [typeFilter, setTypeFilter] = useState<ItemInput | undefined>()
  const [topicFilter, setTopicFilter] = useState<ItemInput | undefined>()
  const [filteredResults, setFilteredResults] = useState<Array<ArticleGuide>>([])
  const typesRef = useRef<HTMLDivElement>(null)
  const topicsRef = useRef<HTMLDivElement>(null)
  const articleCardRef = useRef<HTMLUListElement>(null)

  useEffect(() => {
    setNumVisible(PAGE_SIZE)
    setFilteredResults(
      (includeGuides || []).filter((card) => {
        const matchesType = card.type === typeFilter?.key
        const matchesTopic = card.topics.some((key) => key === topicFilter?.key)
        return (typeFilter?.key ? matchesType : true) && (topicFilter?.key ? matchesTopic : true)
      })
    )
  }, [typeFilter, topicFilter])

  const clickDropdown = (e: React.RefObject<HTMLDivElement>) => {
    if (e === typesRef && typesRef.current) typesRef.current.focus()
    if (e === topicsRef && topicsRef.current) topicsRef.current.focus()
  }

  const loadMore = () => {
    if (articleCardRef.current) {
      const childListLength = articleCardRef.current.childElementCount
      // Leading semi-colon due to prettier to prevent possible ASI failures
      // Need to explicitly type assert as HTMLDivElement as focus property missing from dom type definitions for Element.
      ;(articleCardRef.current.childNodes.item(childListLength - 1) as HTMLDivElement).focus()
    }
    setNumVisible(numVisible + PAGE_SIZE)
  }

  const isUserFiltering = typeFilter !== undefined || topicFilter !== undefined

  const guides = isUserFiltering ? filteredResults : includeGuides || []

  const types = Object.entries(guideTypes).map(([key, val]) => {
    return { text: val, key }
  }) as ItemInput[]

  types.unshift({ text: t('filters.all'), key: undefined })

  const topics = allTopics?.map((topic) => {
    return { text: topic, key: topic }
  }) as ItemInput[]

  topics.unshift({ text: t('filters.all'), key: undefined })

  return (
    <div>
      <div data-search="hide">
        <label htmlFor="guide-filter-form">{t('filter_instructions')}</label>