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import { getLayout } from '@components/Layouts/Layout';
import PostPreview from '@components/PostPreview/PostPreview';
import { t } from '@lingui/macro';
import { NextPageWithLayout } from '@ts/types/app';
import { TopicProps, ThematicPreview } from '@ts/types/taxonomies';
import { defaultLocale, loadTranslation } from '@utils/helpers/i18n';
import { GetStaticPaths, GetStaticProps, GetStaticPropsContext } from 'next';
import { ParsedUrlQuery } from 'querystring';
import styles from '@styles/pages/Page.module.scss';
import { getAllTopicsSlug, getTopicBySlug } from '@services/graphql/queries';
import PostHeader from '@components/PostHeader/PostHeader';
import { ArticleMeta } from '@ts/types/articles';
import { RelatedThematics, ToC, TopicsList } from '@components/Widgets';
import { useRef } from 'react';
import Head from 'next/head';
import Sidebar from '@components/Sidebar/Sidebar';
import { Article as Article, Graph, WebPage } from 'schema-dts';
import { config } from '@config/website';
import { useRouter } from 'next/router';
const Topic: NextPageWithLayout<TopicProps> = ({ topic }) => {
const relatedThematics = useRef<ThematicPreview[]>([]);
const router = useRouter();
const updateRelatedThematics = (newThematics: ThematicPreview[]) => {
newThematics.forEach((thematic) => {
const thematicIndex = relatedThematics.current.findIndex(
(relatedThematic) => relatedThematic.id === thematic.id
);
const hasThematic = thematicIndex === -1 ? false : true;
if (!hasThematic) relatedThematics.current.push(thematic);
});
};
const getPostsList = () => {
return [...topic.posts].reverse().map((post) => {
updateRelatedThematics(post.thematics);
return (
<li key={post.id} className={styles.item}>
<PostPreview post={post} titleLevel={3} />
</li>
);
});
};
const meta: ArticleMeta = {
dates: topic.dates,
results: topic.posts.length,
website: topic.officialWebsite,
};
const topicUrl = `${config.url}${router.asPath}`;
const webpageSchema: WebPage = {
'@id': `${topicUrl}`,
'@type': 'WebPage',
breadcrumb: { '@id': `${config.url}/#breadcrumb` },
name: topic.seo.title,
description: topic.seo.metaDesc,
inLanguage: config.locales.defaultLocale,
reviewedBy: { '@id': `${config.url}/#branding` },
url: `${config.url}`,
isPartOf: {
'@id': `${config.url}`,
},
};
const publicationDate = new Date(topic.dates.publication);
const updateDate = new Date(topic.dates.update);
const articleSchema: Article = {
'@id': `${config.url}/topic`,
'@type': 'Article',
name: topic.title,
description: topic.intro,
author: { '@id': `${config.url}/#branding` },
copyrightYear: publicationDate.getFullYear(),
creator: { '@id': `${config.url}/#branding` },
dateCreated: publicationDate.toISOString(),
dateModified: updateDate.toISOString(),
datePublished: publicationDate.toISOString(),
editor: { '@id': `${config.url}/#branding` },
thumbnailUrl: topic.featuredImage?.sourceUrl,
image: topic.featuredImage?.sourceUrl,
inLanguage: config.locales.defaultLocale,
isPartOf: { '@id': `${config.url}/blog` },
license: 'https://creativecommons.org/licenses/by-sa/4.0/deed.fr',
mainEntityOfPage: { '@id': `${topicUrl}` },
subjectOf: { '@id': `${config.url}/blog` },
};
const schemaJsonLd: Graph = {
'@context': 'https://schema.org',
'@graph': [webpageSchema, articleSchema],
};
return (
<>
<Head>
<title>{topic.seo.title}</title>
<meta name="description" content={topic.seo.metaDesc} />
<meta property="og:url" content={`${topicUrl}`} />
<meta property="og:type" content="article" />
<meta property="og:title" content={topic.title} />
<meta property="og:description" content={topic.intro} />
<meta property="og:image" content={topic.featuredImage?.sourceUrl} />
<meta property="og:image:alt" content={topic.featuredImage?.altText} />
<script
type="application/ld+json"
dangerouslySetInnerHTML={{ __html: JSON.stringify(schemaJsonLd) }}
></script>
</Head>
<article
id="topic"
className={`${styles.article} ${styles['article--no-comments']}`}
>
<PostHeader
cover={topic.featuredImage}
intro={topic.intro}
meta={meta}
title={topic.title}
/>
<Sidebar position="left">
<ToC />
</Sidebar>
<div className={styles.body}>
<div dangerouslySetInnerHTML={{ __html: topic.content }}></div>
{topic.posts.length > 0 && (
<section className={styles.section}>
<h2>{t`All posts in ${topic.title}`}</h2>
<ol className={styles.list}>{getPostsList()}</ol>
</section>
)}
</div>
<Sidebar position="right">
<RelatedThematics thematics={relatedThematics.current} />
<TopicsList title={t`Other topics`} />
</Sidebar>
</article>
</>
);
};
Topic.getLayout = getLayout;
interface PostParams extends ParsedUrlQuery {
slug: string;
}
export const getStaticProps: GetStaticProps = async (
context: GetStaticPropsContext
) => {
const { locale } = context;
const translation = await loadTranslation(locale || defaultLocale);
const { slug } = context.params as PostParams;
const topic = await getTopicBySlug(slug);
const breadcrumbTitle = topic.title;
return {
props: {
breadcrumbTitle,
locale,
topic,
translation,
},
};
};
export const getStaticPaths: GetStaticPaths = async () => {
const allSlugs = await getAllTopicsSlug();
return {
paths: allSlugs.map((post) => `/sujet/${post.slug}`),
fallback: true,
};
};
export default Topic;
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