src/lib/util/Blogs.ts

@@ -2,15 +2,27 @@ import path from 'path';
 
 export const THUMBNAIL_DEFAULT = "https://teasanctuary.ru/common/background-day.webp";
 
-export async function fetchPostsSorted() {
+export type PostComparer = (a: App.BlogPost, b: App.BlogPost) => number;
+
+export const sortPostsByPostDate: PostComparer = (a, b) => new Date(b.date!).valueOf() - new Date(a.date!).valueOf();
+
+function laterDate(a: string, b?: string): number {
+	const dateA = new Date(a).valueOf();
+	if (!b) return dateA;
+
+	const dateB = new Date(b).valueOf();
+	return Math.max(dateA, dateB);
+}
+
+export const sortPostsByPostAndUpdateDate: PostComparer = (a, b) => laterDate(b.date!, b.dateChanged) - laterDate(a.date!, a.dateChanged);
+
+export async function fetchPostsSorted(postComparer?: PostComparer) {
 	const allPosts = await fetchPosts();
 
 	const sortedPosts = allPosts
 		// Для списка постов оставляем только те, у которых объявлена дата публикации
 		.filter((a) => !!a.date)
-		.sort((a, b) => {
-			return new Date(b.date!).valueOf() - new Date(a.date!).valueOf();
-		});
+		.sort(postComparer ?? sortPostsByPostDate);
 
 	return sortedPosts;
 };