import { MetadataRoute } from 'next';
import { getAllPages, getAllPosts, getAllProducts, getAllCategories } from '../lib/data';

export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
  const baseUrl = process.env.SITE_URL || 'https://klz-cables.com';
  const urls: MetadataRoute.Sitemap = [];

  // Add homepage
  urls.push({
    url: baseUrl,
    lastModified: new Date(),
    changeFrequency: 'daily',
    priority: 1,
  });

  // Add all pages
  try {
    const pages = await getAllPages();
    pages.forEach(page => {
      urls.push({
        url: `${baseUrl}/${page.slug}`,
        lastModified: new Date(page.updatedAt || Date.now()),
        changeFrequency: 'weekly',
        priority: 0.8,
      });
    });
  } catch (error) {
    console.warn('Could not fetch pages for sitemap:', error);
  }

  // Add blog posts
  try {
    const posts = await getAllPosts();
    posts.forEach(post => {
      urls.push({
        url: `${baseUrl}/blog/${post.slug}`,
        lastModified: new Date(post.updatedAt || Date.now()),
        changeFrequency: 'weekly',
        priority: 0.6,
      });
    });
  } catch (error) {
    console.warn('Could not fetch posts for sitemap:', error);
  }

  // Add products
  try {
    const products = await getAllProducts();
    products.forEach(product => {
      urls.push({
        url: `${baseUrl}/product/${product.slug}`,
        lastModified: new Date(product.updatedAt || Date.now()),
        changeFrequency: 'monthly',
        priority: 0.5,
      });
    });
  } catch (error) {
    console.warn('Could not fetch products for sitemap:', error);
  }

  // Add product categories
  try {
    const categories = await getAllCategories();
    categories.forEach(category => {
      urls.push({
        url: `${baseUrl}/product-category/${category.slug}`,
        lastModified: new Date(Date.now()),
        changeFrequency: 'monthly',
        priority: 0.4,
      });
    });
  } catch (error) {
    console.warn('Could not fetch categories for sitemap:', error);
  }

  return urls;
}