From 5b6639a3cf9b6c63045cb82e6ef1a43b0742c367 Mon Sep 17 00:00:00 2001
From: Armand Philippot <git@armandphilippot.com>
Date: Wed, 9 Mar 2022 00:38:02 +0100
Subject: feat: provide pagination for users with js disabled (#13)

* chore: add a Pagination component

* chore: add blog pages

* chore: fallback to page number based navigation if JS disabled

* chore: update translation
---
 src/pages/blog/page/[id].tsx | 195 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 195 insertions(+)
 create mode 100644 src/pages/blog/page/[id].tsx

(limited to 'src/pages/blog/page/[id].tsx')

diff --git a/src/pages/blog/page/[id].tsx b/src/pages/blog/page/[id].tsx
new file mode 100644
index 0000000..3be058b
--- /dev/null
+++ b/src/pages/blog/page/[id].tsx
@@ -0,0 +1,195 @@
+import { getLayout } from '@components/Layouts/Layout';
+import Pagination from '@components/Pagination/Pagination';
+import PostHeader from '@components/PostHeader/PostHeader';
+import PostsList from '@components/PostsList/PostsList';
+import Sidebar from '@components/Sidebar/Sidebar';
+import { ThematicsList, TopicsList } from '@components/Widgets';
+import {
+  getAllThematics,
+  getAllTopics,
+  getEndCursor,
+  getPostsTotal,
+  getPublishedPosts,
+} from '@services/graphql/queries';
+import { NextPageWithLayout } from '@ts/types/app';
+import { BlogPageProps } from '@ts/types/blog';
+import { settings } from '@utils/config';
+import { getIntlInstance, loadTranslation } from '@utils/helpers/i18n';
+import { GetStaticPaths, GetStaticProps, GetStaticPropsContext } from 'next';
+import Head from 'next/head';
+import { useRouter } from 'next/router';
+import Script from 'next/script';
+import { useIntl } from 'react-intl';
+import { Blog, Graph, WebPage } from 'schema-dts';
+import styles from '@styles/pages/Page.module.scss';
+import { getFormattedPageNumbers } from '@utils/helpers/format';
+import { useEffect } from 'react';
+
+const BlogPage: NextPageWithLayout<BlogPageProps> = ({
+  allThematics,
+  allTopics,
+  posts,
+  totalPosts,
+}) => {
+  const intl = useIntl();
+  const router = useRouter();
+  const pageNumber = Number(router.query.id);
+
+  useEffect(() => {
+    if (router.query.id === '1') router.push('/blog');
+  }, [router]);
+
+  const pageTitle = intl.formatMessage(
+    {
+      defaultMessage: `Blog - Page {number} - {websiteName}`,
+      description: 'BlogPage: SEO - Page title',
+    },
+    { number: pageNumber, websiteName: settings.name }
+  );
+  const pageDescription = intl.formatMessage(
+    {
+      defaultMessage:
+        "Discover {websiteName}'s writings. He talks about web development, Linux and open source mostly.",
+      description: 'BlogPage: SEO - Meta description',
+    },
+    { websiteName: settings.name }
+  );
+  const pageUrl = `${settings.url}${router.asPath}`;
+
+  const webpageSchema: WebPage = {
+    '@id': `${pageUrl}`,
+    '@type': 'WebPage',
+    breadcrumb: { '@id': `${settings.url}/#breadcrumb` },
+    name: pageTitle,
+    description: pageDescription,
+    inLanguage: settings.locales.defaultLocale,
+    reviewedBy: { '@id': `${settings.url}/#branding` },
+    url: `${settings.url}`,
+    isPartOf: {
+      '@id': `${settings.url}`,
+    },
+  };
+
+  const blogSchema: Blog = {
+    '@id': `${settings.url}/#blog`,
+    '@type': 'Blog',
+    author: { '@id': `${settings.url}/#branding` },
+    creator: { '@id': `${settings.url}/#branding` },
+    editor: { '@id': `${settings.url}/#branding` },
+    inLanguage: settings.locales.defaultLocale,
+    license: 'https://creativecommons.org/licenses/by-sa/4.0/deed.fr',
+    mainEntityOfPage: { '@id': `${pageUrl}` },
+  };
+
+  const schemaJsonLd: Graph = {
+    '@context': 'https://schema.org',
+    '@graph': [webpageSchema, blogSchema],
+  };
+
+  const title = intl.formatMessage({
+    defaultMessage: 'Blog',
+    description: 'BlogPage: page title',
+  });
+
+  return (
+    <>
+      <Head>
+        <title>{pageTitle}</title>
+        <meta name="description" content={pageDescription} />
+        <meta property="og:url" content={`${pageUrl}`} />
+        <meta property="og:type" content="website" />
+        <meta property="og:title" content={title} />
+        <meta property="og:description" content={pageDescription} />
+      </Head>
+      <Script
+        id="schema-blog"
+        type="application/ld+json"
+        dangerouslySetInnerHTML={{ __html: JSON.stringify(schemaJsonLd) }}
+      />
+      <article
+        id="blog"
+        className={`${styles.article} ${styles['article--no-comments']}`}
+      >
+        <PostHeader title={title} meta={{ results: totalPosts }} />
+        <div className={styles.body}>
+          <PostsList data={[posts]} showYears={true} />
+          <Pagination baseUrl="/blog" total={totalPosts} />
+        </div>
+        <Sidebar
+          position="right"
+          title={intl.formatMessage({
+            defaultMessage: 'Filter by:',
+            description: 'BlogPage: sidebar title',
+          })}
+        >
+          <ThematicsList
+            initialData={allThematics}
+            title={intl.formatMessage({
+              defaultMessage: 'Thematics',
+              description: 'BlogPage: thematics list widget title',
+            })}
+          />
+          <TopicsList
+            initialData={allTopics}
+            title={intl.formatMessage({
+              defaultMessage: 'Topics',
+              description: 'BlogPage: topics list widget title',
+            })}
+          />
+        </Sidebar>
+      </article>
+    </>
+  );
+};
+
+BlogPage.getLayout = getLayout;
+
+export const getStaticProps: GetStaticProps = async (
+  context: GetStaticPropsContext
+) => {
+  const intl = await getIntlInstance();
+  const breadcrumbTitle = intl.formatMessage({
+    defaultMessage: 'Blog',
+    description: 'BlogPage: breadcrumb item',
+  });
+  const { locale, params } = context;
+  const queriedPageNumber = params ? Number(params.id) : 1;
+  const queriedPostsNumber = settings.postsPerPage * queriedPageNumber;
+  const endCursor =
+    queriedPostsNumber === 1
+      ? undefined
+      : await getEndCursor({ first: queriedPostsNumber });
+  const posts = await getPublishedPosts({
+    first: settings.postsPerPage,
+    after: endCursor,
+  });
+  const totalPosts = await getPostsTotal();
+  const allThematics = await getAllThematics();
+  const allTopics = await getAllTopics();
+  const translation = await loadTranslation(locale);
+
+  return {
+    props: {
+      allThematics,
+      allTopics,
+      breadcrumbTitle,
+      locale,
+      posts,
+      totalPosts,
+      translation,
+    },
+  };
+};
+
+export default BlogPage;
+
+export const getStaticPaths: GetStaticPaths = async () => {
+  const totalPosts = await getPostsTotal();
+  const totalPages = Math.floor(totalPosts / settings.postsPerPage);
+  const paths = getFormattedPageNumbers(totalPages);
+
+  return {
+    paths,
+    fallback: true,
+  };
+};
-- 
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