fix(pages,services): make thematics & topics pages usable again

When I refactored the fetchers and convertors in #f111685 I forgot to
convert WPThematicPreview and WPTopicPreview so the thematics and
topics pages was broken.
I also:
* removed the ToC added by error in #70b4f63
* fix heading styles
* fix website url in topics pages

1 files changed, 60 insertions, 0 deletions

diff --git a/src/services/graphql/helpers/convert-wp-thematic-to-thematic.ts b/src/services/graphql/helpers/convert-wp-thematic-to-thematic.ts
new file mode 100644
index 0000000..cabfa18
--- /dev/null
+++ b/src/services/graphql/helpers/convert-wp-thematic-to-thematic.ts
@@ -0,0 +1,60 @@
+import type {
+  PageLink,
+  Thematic,
+  WPPostPreview,
+  WPThematic,
+} from '../../../types';
+import { ROUTES } from '../../../utils/constants';
+import {
+  getUniquePageLinks,
+  sortPageLinksByName,
+} from '../../../utils/helpers';
+import { convertPostPreviewToArticlePreview } from './convert-post-preview-to-article-preview';
+import { convertWPTopicPreviewToPageLink } from './convert-taxonomy-to-page-link';
+import { convertWPImgToImg } from './convert-wp-image-to-img';
+
+const getRelatedTopicsFrom = (posts: WPPostPreview[]): PageLink[] => {
+  const topics: PageLink[] = [];
+
+  for (const post of posts) {
+    if (
+      post.acfPosts &&
+      'postsInTopic' in post.acfPosts &&
+      post.acfPosts.postsInTopic
+    ) {
+      topics.push(
+        ...post.acfPosts.postsInTopic.map(convertWPTopicPreviewToPageLink)
+      );
+    }
+  }
+
+  return getUniquePageLinks(topics).sort(sortPageLinksByName);
+};
+
+export const convertWPThematicToThematic = (thematic: WPThematic): Thematic => {
+  return {
+    content: thematic.contentParts.afterMore,
+    intro: thematic.contentParts.beforeMore,
+    meta: {
+      articles: thematic.acfThematics?.postsInThematic?.map(
+        convertPostPreviewToArticlePreview
+      ),
+      cover: thematic.featuredImage
+        ? convertWPImgToImg(thematic.featuredImage.node)
+        : undefined,
+      dates: {
+        publication: thematic.date,
+        update: thematic.modified,
+      },
+      seo: {
+        description: thematic.seo.metaDesc,
+        title: thematic.seo.title,
+      },
+      relatedTopics: thematic.acfThematics?.postsInThematic
+        ? getRelatedTopicsFrom(thematic.acfThematics.postsInThematic)
+        : undefined,
+    },
+    slug: `${ROUTES.THEMATICS.INDEX}/${thematic.slug}`,
+    title: thematic.title,
+  };
+};