import { MetadataRoute } from 'next';
import { getProjects } from '@/app/actions';
import { slugify } from '@/lib/utils';

export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
  const baseUrl = 'https://ayris.tech';
  
  const staticUrls: MetadataRoute.Sitemap = [
    {
      url: `${baseUrl}`,
      lastModified: new Date(),
      changeFrequency: 'weekly',
      priority: 1,
    },
    {
      url: `${baseUrl}/en`,
      lastModified: new Date(),
      changeFrequency: 'weekly',
      priority: 1,
    },
    {
      url: `${baseUrl}/tr`,
      lastModified: new Date(),
      changeFrequency: 'weekly',
      priority: 1,
    },
    {
      url: `${baseUrl}/en/blog`,
      lastModified: new Date(),
      changeFrequency: 'weekly',
      priority: 0.8,
    },
    {
      url: `${baseUrl}/tr/blog`,
      lastModified: new Date(),
      changeFrequency: 'weekly',
      priority: 0.8,
    },
    {
      url: `${baseUrl}/en/work`,
      lastModified: new Date(),
      changeFrequency: 'monthly',
      priority: 0.8,
    },
    {
      url: `${baseUrl}/tr/work`,
      lastModified: new Date(),
      changeFrequency: 'monthly',
      priority: 0.8,
    },
    {
      url: `${baseUrl}/en/privacy`,
      lastModified: new Date(),
      changeFrequency: 'monthly',
      priority: 0.7,
    },
    {
      url: `${baseUrl}/tr/privacy`,
      lastModified: new Date(),
      changeFrequency: 'monthly',
      priority: 0.7,
    },
  ];

  try {
    const projects = await getProjects();
    const uniqueTags = Array.from(new Set(projects.map((p: any) => p.tag)));
    
    const expertiseUrls: MetadataRoute.Sitemap = uniqueTags.flatMap((tag) => {
      if (typeof tag !== 'string') return [];
      const slug = slugify(tag);
      return [
        {
          url: `${baseUrl}/en/expertise/${slug}`,
          lastModified: new Date(),
          changeFrequency: 'monthly',
          priority: 0.7,
        },
        {
          url: `${baseUrl}/tr/expertise/${slug}`,
          lastModified: new Date(),
          changeFrequency: 'monthly',
          priority: 0.7,
        }
      ];
    });

    const workUrls: MetadataRoute.Sitemap = projects.flatMap((p: any) => [
      {
        url: `${baseUrl}/en/work/${p.slug}`,
        lastModified: new Date(),
        changeFrequency: 'monthly',
        priority: 0.7,
      },
      {
        url: `${baseUrl}/tr/work/${p.slug}`,
        lastModified: new Date(),
        changeFrequency: 'monthly',
        priority: 0.7,
      }
    ]);

    // Blog Posts
    let blogUrls: MetadataRoute.Sitemap = [];
    try {
      const { getBlogPosts } = await import('@/app/actions');
      const posts = await getBlogPosts();
      blogUrls = posts.flatMap((p: any) => [
        {
          url: `${baseUrl}/en/blog/${p.slug}`,
          lastModified: new Date(p.date || new Date()),
          changeFrequency: 'weekly',
          priority: 0.8,
        },
        {
          url: `${baseUrl}/tr/blog/${p.slug}`,
          lastModified: new Date(p.date || new Date()),
          changeFrequency: 'weekly',
          priority: 0.8,
        }
      ]);
    } catch (err) {
      // Ignore if blog fetching fails
    }

    // Privacy App Pages
    let privacyUrls: MetadataRoute.Sitemap = [];
    try {
      const { getAllPrivacyApps } = await import('@/data/privacy');
      const privacyApps = getAllPrivacyApps();
      privacyUrls = privacyApps.flatMap((app) => [
        {
          url: `${baseUrl}/en/privacy/${app.slug}`,
          lastModified: new Date(),
          changeFrequency: 'monthly',
          priority: 0.6,
        },
        {
          url: `${baseUrl}/tr/privacy/${app.slug}`,
          lastModified: new Date(),
          changeFrequency: 'monthly',
          priority: 0.6,
        },
      ]);
    } catch (err) {
      // Ignore if privacy fetching fails
    }

    return [...staticUrls, ...expertiseUrls, ...workUrls, ...blogUrls, ...privacyUrls];
  } catch(e) {
    return staticUrls;
  }
}