import { listBlogDetails } from "@/data/blog-detail";
import type { MetadataRoute } from "next";

const SITE_URL =
  process.env.NEXT_PUBLIC_SITE_URL || "https://poyrazavsever.com";

export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
  const posts = await listBlogDetails();

  const staticRoutes: MetadataRoute.Sitemap = [
    {
      url: SITE_URL,
      lastModified: new Date(),
      changeFrequency: "weekly",
      priority: 1.0,
    },
    {
      url: `${SITE_URL}/about`,
      lastModified: new Date(),
      changeFrequency: "monthly",
      priority: 0.8,
    },
    {
      url: `${SITE_URL}/about/references`,
      lastModified: new Date(),
      changeFrequency: "monthly",
      priority: 0.5,
    },
    {
      url: `${SITE_URL}/about/volunteer-community`,
      lastModified: new Date(),
      changeFrequency: "monthly",
      priority: 0.5,
    },
    {
      url: `${SITE_URL}/blog`,
      lastModified: new Date(),
      changeFrequency: "weekly",
      priority: 0.9,
    },
    {
      url: `${SITE_URL}/projects`,
      lastModified: new Date(),
      changeFrequency: "monthly",
      priority: 0.8,
    },
    {
      url: `${SITE_URL}/content`,
      lastModified: new Date(),
      changeFrequency: "weekly",
      priority: 0.7,
    },
    {
      url: `${SITE_URL}/contact`,
      lastModified: new Date(),
      changeFrequency: "yearly",
      priority: 0.5,
    },
    {
      url: `${SITE_URL}/links`,
      lastModified: new Date(),
      changeFrequency: "monthly",
      priority: 0.4,
    },
  ];

  const blogRoutes: MetadataRoute.Sitemap = posts.map((post) => ({
    url: `${SITE_URL}/blog/${post.slug}`,
    lastModified: post.date ? new Date(post.date) : new Date(),
    changeFrequency: "monthly",
    priority: 0.7,
  }));

  return [...staticRoutes, ...blogRoutes];
}