import { Button } from '@components/Buttons'; import { getLayout } from '@components/Layouts/Layout'; import PostHeader from '@components/PostHeader/PostHeader'; import PostsList from '@components/PostsList/PostsList'; import { config } from '@config/website'; import { t } from '@lingui/macro'; import { getPublishedPosts } from '@services/graphql/queries'; import { NextPageWithLayout } from '@ts/types/app'; import { PostsList as PostsListData } from '@ts/types/blog'; import { GetStaticProps, GetStaticPropsContext } from 'next'; import Head from 'next/head'; import { useRouter } from 'next/router'; import { useEffect, useRef, useState } from 'react'; import useSWRInfinite from 'swr/infinite'; import Sidebar from '@components/Sidebar/Sidebar'; import { ThematicsList, TopicsList } from '@components/Widgets'; import styles from '@styles/pages/Page.module.scss'; import Spinner from '@components/Spinner/Spinner'; import PaginationCursor from '@components/PaginationCursor/PaginationCursor'; import { defaultLocale, loadTranslation } from '@utils/helpers/i18n'; const Search: NextPageWithLayout = () => { const [query, setQuery] = useState(''); const router = useRouter(); const lastPostRef = useRef(null); useEffect(() => { if (!router.isReady) return; if (router.query?.s && typeof router.query.s === 'string') { setQuery(router.query.s); } }, [router.isReady, router.query.s]); const getKey = (pageIndex: number, previousData: PostsListData) => { if (previousData && !previousData.posts) return null; return pageIndex === 0 ? { first: config.postsPerPage, searchQuery: query } : { first: config.postsPerPage, after: previousData.pageInfo.endCursor, searchQuery: query, }; }; const { data, error, size, setSize } = useSWRInfinite( getKey, getPublishedPosts ); const [totalPostsCount, setTotalPostsCount] = useState(0); useEffect(() => { if (data) setTotalPostsCount(data[0].pageInfo.total); }, [data]); const [loadedPostsCount, setLoadedPostsCount] = useState( config.postsPerPage ); useEffect(() => { if (data && data.length > 0) { const newCount = config.postsPerPage + data[0].pageInfo.total - data[data.length - 1].pageInfo.total; setLoadedPostsCount(newCount); } }, [data]); const isLoadingInitialData = !data && !error; const isLoadingMore: boolean = isLoadingInitialData || (size > 0 && data !== undefined && typeof data[size - 1] === 'undefined'); const hasNextPage = data && data[data.length - 1].pageInfo.hasNextPage; const title = query ? t`Search results for: ${query}` : t({ comment: 'Search page title', message: 'Search', }); const description = query ? t`Discover search results for: ${query}` : t`Search for a post on ${config.name}.`; const head = { title: `${title} | ${config.name}`, description, }; const loadMorePosts = () => { if (lastPostRef.current) { lastPostRef.current.focus(); } setSize(size + 1); }; const getPostsList = () => { if (error) return t`Failed to load.`; if (!data) return ; return ; }; return ( <> {head.title}
{getPostsList()} {hasNextPage && ( <> )}
); }; Search.getLayout = getLayout; export const getStaticProps: GetStaticProps = async ( context: GetStaticPropsContext ) => { const breadcrumbTitle = t`Search`; const { locale } = context; const translation = await loadTranslation(locale || defaultLocale); return { props: { breadcrumbTitle, locale, translation, }, }; }; export default Search;