fetchBlogPostsFromGitHub.ts

import matter from "gray-matter";

const GITHUB_TOKEN = process.env.GITHUB_BLOG_CLIENT;
const REPO_OWNER = "ullaskunder3";
const REPO_NAME = "blog-api";
const BRANCH = "main";

interface BlogPostMeta {
  title: string;
  date: string;
  subtitle: string;
  slug: string;
  tag: string[];
}

export const fetchBlogPostsFromGitHub = async (): Promise<BlogPostMeta[]> => {
  try {
    const res = await fetch(
      `https://api.github.com/repos/${REPO_OWNER}/${REPO_NAME}/contents?ref=${BRANCH}`,
      {
        headers: {
          Authorization: `Bearer ${GITHUB_TOKEN}`,
          Accept: "application/vnd.github.v3+json",
        },
      }
    );

    const files = await res.json();

    if (!Array.isArray(files)) {
      console.error("GitHub API did not return an array:", files);
      return [];
    }

    const mdxFiles = files.filter((file: any) => file.name.endsWith(".mdx"));

    const posts: BlogPostMeta[] = await Promise.all(
      mdxFiles.map(async (file: any) => {
        const contentRes = await fetch(file.download_url, {
          headers: {
            Authorization: `Bearer ${GITHUB_TOKEN}`,
          },
        });

        const rawContent = await contentRes.text();
        const { data, content } = matter(rawContent);

        return {
          title: data.title,
          date: data.date,
          subtitle: data.subtitle,
          slug: file.name.replace(".mdx", ""),
          tag: data.tag || [],
          content,
        };
      })
    );

    return posts;
  } catch (error) {
    console.error("Error fetching posts:", error);
    return [];
  }
};