import { NextResponse } from "next/server";
import { getAllPosts } from "@/lib/posts";

const SITE_URL = "https://denizbektas.com.tr";

const staticPages = [
  { url: "/", priority: "1.0", changefreq: "weekly" },
  { url: "/merhaba", priority: "0.8", changefreq: "monthly" },
  { url: "/hakkimda", priority: "0.8", changefreq: "monthly" },
  { url: "/su-anda", priority: "0.7", changefreq: "weekly" },
  { url: "/misyon", priority: "0.6", changefreq: "monthly" },
  { url: "/blog", priority: "0.9", changefreq: "weekly" },
  { url: "/infosec", priority: "0.9", changefreq: "weekly" },
  { url: "/notebook", priority: "0.8", changefreq: "weekly" },
  { url: "/seyir-defteri", priority: "0.7", changefreq: "weekly" },
  { url: "/faydali-linkler", priority: "0.7", changefreq: "monthly" },
  { url: "/roadmap", priority: "0.8", changefreq: "monthly" },
  { url: "/takim-cantam", priority: "0.6", changefreq: "monthly" },
  { url: "/hobilerim", priority: "0.5", changefreq: "monthly" },
  { url: "/fikirlerim", priority: "0.7", changefreq: "monthly" },
  { url: "/projeler", priority: "0.8", changefreq: "monthly" },
  { url: "/podcast", priority: "0.7", changefreq: "weekly" },
  { url: "/iletisim", priority: "0.6", changefreq: "monthly" },
  { url: "/ozgecmis", priority: "0.7", changefreq: "monthly" },
  { url: "/aktivite", priority: "0.6", changefreq: "daily" },
  { url: "/rss-beslemeleri", priority: "0.5", changefreq: "monthly" },
  { url: "/statboard", priority: "0.5", changefreq: "monthly" },
  { url: "/altyapi", priority: "0.5", changefreq: "monthly" },
  { url: "/tesekkurler", priority: "0.4", changefreq: "yearly" },
  { url: "/gizlilik", priority: "0.3", changefreq: "yearly" },
  { url: "/kullanim-kosullari", priority: "0.3", changefreq: "yearly" },
];

export async function GET() {
  const posts = getAllPosts();
  const now = new Date().toISOString().split("T")[0];

  const staticUrls = staticPages
    .map(
      (p) => `
  <url>
    <loc>${SITE_URL}${p.url}</loc>
    <lastmod>${now}</lastmod>
    <changefreq>${p.changefreq}</changefreq>
    <priority>${p.priority}</priority>
  </url>`
    )
    .join("");

  const postUrls = posts
    .map(
      (p) => `
  <url>
    <loc>${SITE_URL}/${p.category}/${p.slug}</loc>
    <lastmod>${p.date}</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>`
    )
    .join("");

  const xml = `<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
  ${staticUrls}
  ${postUrls}
</urlset>`;

  return new NextResponse(xml, {
    headers: { "Content-Type": "application/xml; charset=utf-8", "Cache-Control": "public, max-age=86400" },
  });
}