import type { MetadataRoute } from "next";
import { fetchPosts, fetchBoards } from "@/lib/api";

export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
  const baseUrl = "http://localhost:3000";
  const entries: MetadataRoute.Sitemap = [
    { url: `${baseUrl}/`, lastModified: new Date(), changeFrequency: "daily", priority: 1 },
  ];

  try {
    const { boards } = await fetchBoards();
    for (const board of boards) {
      entries.push({
        url: `${baseUrl}/board/${board.id}`,
        lastModified: new Date(),
        changeFrequency: "daily",
        priority: 0.8,
      });
    }

    const { posts } = await fetchPosts(1, 100);
    for (const post of posts) {
      entries.push({
        url: `${baseUrl}/post/${post.id}`,
        lastModified: new Date(post.created_at),
        changeFrequency: "weekly",
        priority: 0.6,
      });
    }
  } catch {
    /* 忽略 API 错误 */
  }

  return entries;
}