import { listBlogDetails } from "@/data/blog-detail";
import { isNewsletterCategory } from "@/data/blog";
import { listAnimationSources } from "@/data/animation-sources";
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, animationSources] = await Promise.all([
    listBlogDetails(),
    listAnimationSources(),
  ]);

  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: `${SITE_URL}/agenda`,
      lastModified: new Date(),
      changeFrequency: "weekly",
      priority: 0.9,
    },
    {
      url: `${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: `${SITE_URL}/links`,
      lastModified: new Date(),
      changeFrequency: "monthly",
      priority: 0.4,
    },
    {
      url: `${SITE_URL}/animation-sources`,
      lastModified: new Date(),
      changeFrequency: "monthly",
      priority: 0.7,
    },
  ];

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

  const animationSourceRoutes: MetadataRoute.Sitemap = animationSources.map(
    (source) => ({
      url: `${SITE_URL}${source.lang === "en" ? "/en" : ""}/animation-sources/${source.slug}`,
      lastModified: source.date ? new Date(source.date) : new Date(),
      changeFrequency: "monthly",
      priority: 0.6,
    }),
  );

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