import { MetadataRoute } from "next"
import { POSTS } from "@/data/blog-posts"

// Regenerate hourly so <lastmod> (new Date() below) stays fresh and the XML
// response is not cached with the static 1-year default.
export const revalidate = 3600

const BASE_URL = "https://designshare.net"

export default function sitemap(): MetadataRoute.Sitemap {
  const now = new Date()

  const staticPages: MetadataRoute.Sitemap = [
    {
      url: BASE_URL,
      lastModified: now,
      changeFrequency: "weekly",
      priority: 1,
    },
    {
      url: `${BASE_URL}/blogs`,
      lastModified: now,
      changeFrequency: "weekly",
      priority: 0.7,
    },
    {
      url: `${BASE_URL}/privacy-policy`,
      lastModified: now,
      changeFrequency: "monthly",
      priority: 0.8,
    },
    {
      url: `${BASE_URL}/refund-policy`,
      lastModified: now,
      changeFrequency: "monthly",
      priority: 0.8,
    },
    {
      url: `${BASE_URL}/terms-conditions`,
      lastModified: now,
      changeFrequency: "monthly",
      priority: 0.8,
    },
  ]

  // Auto-include every blog post. Adding a post to data/blog-posts.ts is enough
  // for it to appear here — no need to touch this file again.
  const blogPosts: MetadataRoute.Sitemap = POSTS.map((post) => ({
    url: `${BASE_URL}/blog/${post.slug}`,
    lastModified: now,
    changeFrequency: "weekly",
    priority: 0.7,
  }))

  return [...staticPages, ...blogPosts]
}