// JSONP Detector - Detects JSONP callback injection
// Browser Techniques Line 117: Callback parameter exploitation
// Force JSONP to call attacker function and send data out

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

export class JsonpDetector extends BaseDetector {
  constructor(config = {}) {
    super({
      name: 'jsonp-detector',
      category: 'cross-site',
      version: '1.0.0',
      description: 'Detects JSONP callback injection attempts',
      weight: 2,
      severity: 'medium',
      ...config
    });
  }

  async detect(target, ruleRegistry) {
    // TODO: Implement JSONP detection
    // - Check for callback/jsonp parameters in URLs
    // - Detect suspicious callback function names
    // - Monitor script tag JSONP loads to unexpected domains
    // - Identify JSONP cache poisoning attempts

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

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

    const params = this.extractQueryParams(url);

    // Check for common JSONP callback parameters
    const jsonpParams = ['callback', 'jsonp', 'cb', 'jsonpCallback'];

    for (const paramName of Object.keys(params)) {
      if (jsonpParams.includes(paramName.toLowerCase())) {
        findings.push(this.createFinding({
          pattern: 'jsonp-callback',
          matched: `${paramName}=${params[paramName]}`,
          description: 'JSONP callback parameter detected',
          severity: 'medium',
          weight: 2,
          metadata: {
            parameterName: paramName,
            callbackFunction: params[paramName]
          }
        }));
      }
    }

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

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