大规模网站 XML Sitemap 分片架构设计与索引覆盖率闭环监控

import type { MetadataRoute } from "next";
import { SITE_CANONICAL_BASE } from "@/lib/site-config";
import { BLOG_ARTICLES } from "@/lib/blog-data";
import { DOCS_GUIDES } from "@/lib/docs-data";

export default function sitemap(): MetadataRoute.Sitemap {
  const corePages: MetadataRoute.Sitemap = [
    {
      url: SITE_CANONICAL_BASE,
      lastModified: "2026-10-20",
      changeFrequency: "daily",
      priority: 1.0,
    },
    {
      url: `${SITE_CANONICAL_BASE}/solutions`,
      lastModified: "2026-10-20",
      changeFrequency: "weekly",
      priority: 0.9,
    },
    {
      url: `${SITE_CANONICAL_BASE}/blog`,
      lastModified: "2026-10-20",
      changeFrequency: "daily",
      priority: 0.9,
    },
    {
      url: `${SITE_CANONICAL_BASE}/docs`,
      lastModified: "2026-10-20",
      changeFrequency: "weekly",
      priority: 0.9,
    },
  ];

  const blogEntries = BLOG_ARTICLES.map((article) => ({
    url: `${SITE_CANONICAL_BASE}/blog/${article.slug}`,
    lastModified: article.updatedAt,
    changeFrequency: "weekly" as const,
    priority: 0.8,
  }));

  const docEntries = DOCS_GUIDES.map((doc) => ({
    url: `${SITE_CANONICAL_BASE}/docs/${doc.slug}`,
    lastModified: doc.updatedAt,
    changeFrequency: "weekly" as const,
    priority: 0.85,
  }));

  return [...corePages, ...blogEntries, ...docEntries];
}