import { MetadataRoute } from 'next';
import { productService } from '../lib/services/productService';
import { PRODUCTS } from '../lib/data/products';

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

  // Static routes
  const staticRoutes: MetadataRoute.Sitemap = [
    {
      url: `${baseUrl}`,
      lastModified: new Date(),
      changeFrequency: 'daily',
      priority: 1,
    },
    {
      url: `${baseUrl}/shop`,
      lastModified: new Date(),
      changeFrequency: 'daily',
      priority: 0.9,
    },
    {
      url: `${baseUrl}/wiki`,
      lastModified: new Date(),
      changeFrequency: 'weekly',
      priority: 0.8,
    },
    {
      url: `${baseUrl}/blog`,
      lastModified: new Date(),
      changeFrequency: 'weekly',
      priority: 0.8,
    },
    {
      url: `${baseUrl}/search`,
      lastModified: new Date(),
      changeFrequency: 'weekly',
      priority: 0.5,
    },
    {
      url: `${baseUrl}/about`,
      lastModified: new Date(),
      changeFrequency: 'monthly',
      priority: 0.6,
    },
    {
      url: `${baseUrl}/contact`,
      lastModified: new Date(),
      changeFrequency: 'monthly',
      priority: 0.6,
    },
  ];

  // Dynamic products
  try {
    const res = await productService.getProducts({ limit: 999 });
    const products = res.data && res.data.length > 0 ? res.data : PRODUCTS;

    const productRoutes: MetadataRoute.Sitemap = products.map((product) => ({
      url: `${baseUrl}/shop/${product.slug || product.id}`,
      lastModified: new Date(),
      changeFrequency: 'weekly',
      priority: 0.8,
    }));

    return [...staticRoutes, ...productRoutes];
  } catch {
    const fallbackRoutes: MetadataRoute.Sitemap = PRODUCTS.map((product) => ({
      url: `${baseUrl}/shop/${product.slug || product.id}`,
      lastModified: new Date(),
      changeFrequency: 'weekly',
      priority: 0.8,
    }));
    return [...staticRoutes, ...fallbackRoutes];
  }
}