Add helper functions to fetch blog posts data

lib/blog.ts

@@ -0,0 +1,56 @@
+import fs from 'fs';
+import path from 'path';
+import matter from 'gray-matter';
+
+const blogPostsDirectory = path.join(process.cwd(), '_blog');
+
+export const getBlogPosts = () => {
+	const fileNames = fs.readdirSync(blogPostsDirectory);
+
+	const allBlogPostsData = fileNames.map(filename => {
+		const slug = filename.replace('.mdx', '');
+
+		const fullPath = path.join(blogPostsDirectory, filename);
+		const fileContents = fs.readFileSync(fullPath, 'utf8');
+		const { data } = matter(fileContents);
+
+		const options = { month: 'long', day: 'numeric', year: 'numeric' };
+		const formattedDate = new Date(data.date).toLocaleDateString('en-IN', options);
+
+		const frontmatter = {
+			...data,
+			date: formattedDate
+		};
+		return {
+			slug,
+			...frontmatter
+		};
+	});
+
+	return allBlogPostsData.sort((a, b) => {
+		if (new Date(a.date) < new Date(b.date)) {
+			return 1;
+		} else {
+			return -1;
+		}
+	});
+};
+
+export const getBlogPostsSlugs = () => {
+	const fileNames = fs.readdirSync(blogPostsDirectory);
+
+	return fileNames.map(filename => {
+		return {
+			params: {
+				slug: filename.replace('.mdx', '')
+			}
+		};
+	});
+};
+
+export const getBlogPostdata = async (slug: string) => {
+	const fullPath = path.join(blogPostsDirectory, `${slug}.mdx`);
+	const postContent = fs.readFileSync(fullPath, 'utf8');
+
+	return postContent;
+};