// Private Network Detector - Detects calls to localhost/private IPs
// Browser Techniques Line 108: Local port probing via timing
// Use fetch/img timing or error patterns to infer reachable services

import { BaseDetector } from '../base-detector.js';

export class PrivateNetworkDetector extends BaseDetector {
  constructor(config = {}) {
    super({
      name: 'private-network',
      category: 'cross-site',
      version: '1.0.0',
      description: 'Detects private network access attempts',
      weight: 3,
      severity: 'high',
      ...config
    });
  }

  async detect(target, ruleRegistry) {
    // TODO: Implement private network detection
    // - Detect requests to localhost (127.0.0.1, ::1)
    // - Check for private IP ranges (10.x, 192.168.x, 172.16-31.x)
    // - Monitor port scanning patterns
    // - Identify router/IoT API access attempts
    // - Detect DNS rebinding attacks

    const findings = [];
    const url = target.url;

    if (!url) {
      return this.createResult(false, [], 0);
    }

    const domain = this.extractDomain(url);

    // Quick check for localhost/private IPs
    if (domain) {
      const privatePatterns = [
        '127.0.0.1',
        'localhost',
        /^192\.168\./,
        /^10\./,
        /^172\.(1[6-9]|2[0-9]|3[01])\./
      ];

      for (const pattern of privatePatterns) {
        if (typeof pattern === 'string' && domain === pattern) {
          findings.push(this.createFinding({
            pattern: 'private-ip',
            matched: domain,
            description: 'Request to private network address',
            severity: 'high',
            weight: 3
          }));
        } else if (pattern instanceof RegExp && pattern.test(domain)) {
          findings.push(this.createFinding({
            pattern: 'private-ip',
            matched: domain,
            description: 'Request to private network range',
            severity: 'high',
            weight: 3
          }));
        }
      }
    }

    const matched = findings.length > 0;
    const riskScore = findings.reduce((sum, f) => sum + (f.weight || 1), 0);

    return this.createResult(matched, findings, riskScore);
  }
}
