import { MetadataRoute } from 'next';
import fs from 'fs';
import path from 'path';

export default function sitemap(): MetadataRoute.Sitemap {
    const baseUrl = process.env.NEXT_PUBLIC_BASE_URL || 'https://your-domain.com';

    // Static routes
    const staticRoutes = [
        {
            url: baseUrl,
            lastModified: new Date(),
            changeFrequency: 'daily' as const,
            priority: 1,
        },
        {
            url: `${baseUrl}/products`,
            lastModified: new Date(),
            changeFrequency: 'weekly' as const,
            priority: 0.8,
        },
        {
            url: `${baseUrl}/products/ecs`,
            lastModified: new Date(),
            changeFrequency: 'weekly' as const,
            priority: 0.7,
        },
        {
            url: `${baseUrl}/products/oss`,
            lastModified: new Date(),
            changeFrequency: 'weekly' as const,
            priority: 0.7,
        },
        {
            url: `${baseUrl}/products/rds`,
            lastModified: new Date(),
            changeFrequency: 'weekly' as const,
            priority: 0.7,
        },
        {
            url: `${baseUrl}/products/slb`,
            lastModified: new Date(),
            changeFrequency: 'weekly' as const,
            priority: 0.7,
        },
        {
            url: `${baseUrl}/solutions`,
            lastModified: new Date(),
            changeFrequency: 'weekly' as const,
            priority: 0.8,
        },
        {
            url: `${baseUrl}/news`,
            lastModified: new Date(),
            changeFrequency: 'daily' as const,
            priority: 0.8,
        },
        {
            url: `${baseUrl}/contact`,
            lastModified: new Date(),
            changeFrequency: 'monthly' as const,
            priority: 0.6,
        },
        {
            url: `${baseUrl}/support`,
            lastModified: new Date(),
            changeFrequency: 'weekly' as const,
            priority: 0.7,
        },
    ];

    // Dynamic news routes
    const newsRoutes = getDynamicNewsRoutes(baseUrl);

    return [...staticRoutes, ...newsRoutes];
}

function getDynamicNewsRoutes(baseUrl: string) {
    const contentDir = path.join(process.cwd(), 'content');
    const routes: MetadataRoute.Sitemap = [];

    try {
        if (fs.existsSync(contentDir)) {
            const folders = fs
                .readdirSync(contentDir, { withFileTypes: true })
                .filter((dirent) => dirent.isDirectory())
                .map((dirent) => dirent.name);

            folders.forEach((folder) => {
                routes.push({
                    url: `${baseUrl}/news/${folder}`,
                    lastModified: new Date(),
                    changeFrequency: 'weekly' as const,
                    priority: 0.6,
                });
            });
        }
    } catch (error) {
        console.warn('Could not read content directory for sitemap generation:', error);
    }

    return routes;
}