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lib/blog.ts

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+import fs from "fs";
+import matter from "gray-matter";
+import path from "path";
+import rehypePrettyCode from "rehype-pretty-code";
+import rehypeStringify from "rehype-stringify";
+import remarkGfm from "remark-gfm";
+import remarkParse from "remark-parse";
+import remarkRehype from "remark-rehype";
+import { unified } from "unified";
+
+type Metadata = {
+  title: string;
+  publishedAt: string;
+  summary: string;
+  image?: string;
+  category?: string;
+};
+
+function getMDXFiles(dir: string) {
+  return fs.readdirSync(dir).filter((file) => path.extname(file) === ".mdx");
+}
+
+export async function markdownToHTML(markdown: string) {
+  const p = await unified()
+    .use(remarkParse)
+    .use(remarkGfm)
+    .use(remarkRehype)
+    .use(rehypePrettyCode, {
+      theme: {
+        light: "min-light",
+        dark: "min-dark",
+      },
+      keepBackground: false,
+    })
+    .use(rehypeStringify)
+    .process(markdown);
+
+  return p.toString();
+}
+
+export async function getPost(slug: string) {
+  const filePath = path.join("content", `${slug}.mdx`);
+  let source = fs.readFileSync(filePath, "utf-8");
+  const { content: rawContent, data: metadata } = matter(source);
+  const content = await markdownToHTML(rawContent);
+  return {
+    source: content,
+    metadata: metadata as Metadata,
+    slug,
+  };
+}
+
+async function getAllPosts(dir: string, category?: string) {
+  let mdxFiles = getMDXFiles(dir);
+  console.log(dir);
+  console.log(category);
+  console.log(mdxFiles);
+  const posts = await Promise.all(
+    mdxFiles.map(async (file) => {
+      let slug = path.basename(file, path.extname(file));
+      let { metadata, source } = await getPost(slug);
+      console.log(file);
+      console.log(slug);
+      console.log(metadata);
+      console.log(source);
+
+      return {
+        metadata,
+        slug,
+        source,
+      };
+    })
+  );
+
+  if (category) {
+    return posts.filter((post) => post.metadata.category === category);
+  }
+  console.log(posts);
+  return posts;
+}
+
+export async function getBlogPosts(category?: string) {
+  let postPath = path.join(process.cwd(), "content");
+  console.log(postPath); 
+  return getAllPosts(postPath, category);
+}