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1 files changed, 51 insertions, 0 deletions

diff --git a/src/utils/seo/editorial-shelf-collection-page.ts b/src/utils/seo/editorial-shelf-collection-page.ts
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--- /dev/null
+++ b/src/utils/seo/editorial-shelf-collection-page.ts
@@ -0,0 +1,51 @@
+import type I18N from '@amp/web-apps-localization';
+import type { GenericPage } from '@jet-app/app-store/api/models';
+import type { SeoData } from '@amp/web-app-components/src/components/MetaTags/types';
+import { isPageHeaderShelf } from '~/components/jet/shelf/PageHeaderShelf.svelte';
+import { getPlatformFromPage } from '~/utils/seo/common';
+import { commaSeparatedList } from '../string-formatting';
+
+export function seoDataForEditorialShelfCollectionPage(
+    page: GenericPage,
+    i18n: I18N,
+): SeoData {
+    let title = page.title;
+    let description;
+    const headerShelf = page.shelves.find(isPageHeaderShelf);
+
+    if (headerShelf) {
+        title = headerShelf.items[0].title;
+        description = headerShelf.items[0].subtitle;
+    }
+
+    if (!description) {
+        const platform = getPlatformFromPage(page);
+        const titles = page.shelves
+            .filter((shelf) => !isPageHeaderShelf(shelf))
+            .flatMap(({ items }) => items)
+            .slice(0, 3)
+            .map((item) => item.title);
+
+        description = i18n.t(
+            'ASE.Web.AppStore.Meta.EditorialShelfCollection.Description',
+            {
+                platform,
+                listOfApps: commaSeparatedList(titles),
+            },
+        );
+    }
+
+    const titleWithSiteName = i18n.t(
+        'ASE.Web.AppStore.Meta.TitleWithSiteName',
+        { title },
+    );
+
+    return {
+        pageTitle: titleWithSiteName,
+        socialTitle: titleWithSiteName,
+        appleTitle: titleWithSiteName,
+        description,
+        socialDescription: description,
+        appleDescription: description,
+    };
+}