const PAYLOAD_URL = process.env.PAYLOAD_URL || "https://payload.mk360.de";
const TENANT_SLUG = "einfach-produktiv";

export type BlogPost = {
  id: number;
  title: string;
  slug: string;
  category: string;
  readTime: number;
  excerpt: string;
  thumbnail: string | null;
};

type PayloadPost = {
  id: number;
  title: string;
  slug: string;
  category: { name: string } | number | null;
  readTime: number;
  excerpt: string;
  thumbnail: { url: string } | number | null;
};

export async function getBlogPosts(limit = 3): Promise<BlogPost[]> {
  const params = new URLSearchParams({
    "where[tenant.slug][equals]": TENANT_SLUG,
    sort: "-publishedAt",
    depth: "2",
    limit: String(limit),
  });

  const res = await fetch(`${PAYLOAD_URL}/api/posts?${params}`, {
    next: { revalidate: 60 },
  });
  if (!res.ok) {
    console.error(`getBlogPosts: Payload returned ${res.status} ${res.statusText}`);
    return [];
  }

  const data: { docs?: PayloadPost[] } = await res.json();
  const docs = Array.isArray(data.docs) ? data.docs : [];
  return docs.map((post) => ({
    id: post.id,
    title: post.title,
    slug: post.slug,
    category:
      typeof post.category === "object" && post.category
        ? post.category.name
        : "",
    readTime: post.readTime,
    excerpt: post.excerpt,
    thumbnail:
      typeof post.thumbnail === "object" && post.thumbnail
        ? post.thumbnail.url
        : null,
  }));
}