☁️ Cloudflare Worker Setup Guide

/**
 * LLMS Central AI Bot Tracker - Cloudflare Worker
 * 
 * This worker intercepts all requests to your website and tracks AI bot visits
 * before forwarding the request to your origin server.
 */

// AI bot patterns to detect
const AI_BOT_PATTERNS = [
  'gptbot', 'chatgpt', 'claude', 'anthropic', 'google-extended',
  'googlebot', 'bingbot', 'applebot', 'facebookexternalhit',
  'meta-externalagent', 'perplexitybot', 'youbot', 'bytespider',
  'diffbot', 'grokbot', 'x-bot', 'grok', 'x.ai', 'xai',
  'cohere', 'amazonbot', 'yandexbot', 'baiduspider'
];

const LLMS_CENTRAL_API = 'https://llmscentral.com/api/bot-tracker';

export default {
  async fetch(request, env, ctx) {
    const userAgent = request.headers.get('user-agent') || '';
    const userAgentLower = userAgent.toLowerCase();
    
    const isBot = AI_BOT_PATTERNS.some(pattern => userAgentLower.includes(pattern));
    
    if (isBot) {
      const domain = env.DOMAIN || new URL(request.url).hostname;
      const page = new URL(request.url).pathname;
      const clientIP = request.headers.get('cf-connecting-ip') || 'Unknown';
      
      // Fire and forget - track bot visit
      ctx.waitUntil(
        fetch(LLMS_CENTRAL_API, {
          method: 'POST',
          headers: {
            'Content-Type': 'application/json',
            'User-Agent': userAgent,
            'X-Forwarded-For': clientIP
          },
          body: JSON.stringify({ domain, page })
        }).catch(err => console.error('Tracking error:', err))
      );
    }
    
    return fetch(request);
  }
};