Next.js Sitemap Generator

import type { MetadataRoute } from 'next';
import { prisma } from '@/lib/prisma';

export const revalidate = 3600; // Revalidate cache every 1 hour

export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
  const baseUrl = process.env.NEXT_PUBLIC_SITE_URL || 'https://faisalrafique.com';

  // Core Static Routes
  const staticRoutes: MetadataRoute.Sitemap = [
    {
      url: `${baseUrl}`,
      lastModified: new Date(),
      changeFrequency: 'daily',
      priority: 1.00,
    },
    {
      url: `${baseUrl}/tools`,
      lastModified: new Date(),
      changeFrequency: 'daily',
      priority: 0.95,
    },
    {
      url: `${baseUrl}/about`,
      lastModified: new Date(),
      changeFrequency: 'monthly',
      priority: 0.90,
    },
    {
      url: `${baseUrl}/services`,
      lastModified: new Date(),
      changeFrequency: 'weekly',
      priority: 0.90,
    },
    {
      url: `${baseUrl}/blog`,
      lastModified: new Date(),
      changeFrequency: 'daily',
      priority: 0.80,
    },
    {
      url: `${baseUrl}/contact`,
      lastModified: new Date(),
      changeFrequency: 'monthly',
      priority: 0.70,
    },
  ];

  // 1. Dynamic Published Blog Posts
  const posts = await prisma.post.findMany({
    where: { published: true },
    select: { slug: true, updatedAt: true },
  });

  const postRoutes: MetadataRoute.Sitemap = posts.map((post) => ({
    url: `${baseUrl}/blog/${post.slug}`,
    lastModified: post.updatedAt,
    changeFrequency: 'weekly',
    priority: 0.8,
  }));

  // 2. Dynamic Service Landing Pages
  const services = await prisma.service.findMany({
    where: { active: true },
    select: { slug: true, updatedAt: true },
  });

  const serviceRoutes: MetadataRoute.Sitemap = services.map((service) => ({
    url: `${baseUrl}/services/${service.slug}`,
    lastModified: service.updatedAt,
    changeFrequency: 'weekly',
    priority: 0.9,
  }));

  return [
    staticRoutes,
    ...postRoutes,
    ...serviceRoutes
  ];
}