import type { MetadataRoute } from "next";

export const dynamic = "force-static";

// Moteurs de recherche + robots d'aperçu de lien (pour que le référencement
// et les cartes Open Graph continuent de fonctionner quand tu partages le site).
const ALLOWED = [
  "Googlebot",
  "Google-InspectionTool",
  "Bingbot",
  "DuckDuckBot",
  "facebookexternalhit",
  "Twitterbot",
  "LinkedInBot",
  "Slackbot-LinkExpanding",
  "Discordbot",
  "TelegramBot",
  "WhatsApp",
];

// Robots d'entraînement IA et scrapers connus : bloqués explicitement.
const BLOCKED = [
  "GPTBot",
  "ChatGPT-User",
  "OAI-SearchBot",
  "ClaudeBot",
  "Claude-Web",
  "anthropic-ai",
  "Google-Extended",
  "PerplexityBot",
  "CCBot",
  "Bytespider",
  "Amazonbot",
  "Applebot-Extended",
  "Meta-ExternalAgent",
  "FacebookBot",
  "cohere-ai",
  "Diffbot",
  "Omgilibot",
  "ImagesiftBot",
  "YouBot",
  "AhrefsBot",
  "SemrushBot",
  "MJ12bot",
  "DotBot",
  "DataForSeoBot",
  "Scrapy",
];

export default function robots(): MetadataRoute.Robots {
  return {
    rules: [
      ...ALLOWED.map((userAgent) => ({ userAgent, allow: "/" })),
      ...BLOCKED.map((userAgent) => ({ userAgent, disallow: "/" })),
      // Tout le reste : interdit.
      { userAgent: "*", disallow: "/" },
    ],
    sitemap: "https://francktwl.fr/sitemap.xml",
    host: "https://francktwl.fr",
  };
}