unicorn-utterances/src/utils/get-all-posts.ts

/**
 * This should rare-to-never be used inside of an `.astro` file, instead, please use Astro.glob
 *
 * This file is really only useful when we need to get a list of all posts with metadata associated
 * when the Astro runtime isn't available, such as getting suggested articles and other instances.
 */
import { rehypeUnicornPopulatePost } from "./markdown/rehype-unicorn-populate-post";
import { isNotJunk } from "junk";
import { postsDirectory } from "./data";
import { Languages, PostInfo } from "types/index";
import * as fs from "fs";
import * as path from "path";

const getIndexPath = (lang: Languages) => {
	const indexPath = lang !== "en" ? `index.${lang}.md` : `index.md`;
	return indexPath;
};

export function getPostSlugs(lang: Languages) {
	// Avoid errors trying to read from `.DS_Store` files
	return fs
		.readdirSync(postsDirectory)
		.filter(isNotJunk)
		.filter((dir) =>
			fs.existsSync(path.resolve(postsDirectory, dir, getIndexPath(lang)))
		);
}

export const getAllPosts = (lang: Languages): PostInfo[] => {
	const slugs = getPostSlugs(lang);
	return slugs.map((slug) => {
		const file = {
			path: path.join(postsDirectory, slug, getIndexPath(lang)),
			data: {
				astro: {
					frontmatter: {},
				},
			},
		};

		(rehypeUnicornPopulatePost as any)()(undefined, file);

		return {
			...((file.data.astro.frontmatter as any) || {}).frontmatterBackup,
			...file.data.astro.frontmatter,
		};
	});
};