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wallet-review.js

45 lines3,076 bytessha256 e059303da61b
  1. // Real signing-path review. Local authenticated service; no customer credentials forwarded.
  2. const http = require('node:http');
  3. const crypto = require('node:crypto');
  4. function buildReview(policy, controls, messages = []) {
  5. const text = (value, limit = 2000) => String(value || '').slice(0, limit);
  6. const domains = value => Array.isArray(value) ? value.slice(0, 50).map(v => text(v, 200)) : [];
  7. const amount = value => typeof value === 'number' && Number.isFinite(value) ? value : null;
  8. const price = p => ({ amount: amount(p?.amount), currency: text(p?.currency, 3) });
  9. return {
  10. source: 'shopper_policy_sign',
  11. customer_messages: messages.slice(-4).map(m => text(m)),
  12. proposed_request: text(policy.request),
  13. permissions: {
  14. items: (Array.isArray(policy.items) ? policy.items : []).slice(0, 30).map(i => ({ product: text(i.product, 300), quantity: amount(i.quantity), max_unit_price: price(i.max_unit_price) })),
  15. budget: { max_total: amount(policy.budget?.max_total), currency: text(policy.budget?.currency, 3) },
  16. timing: { order_by: text(policy.timing?.order_by, 60), deliver_by: text(policy.timing?.deliver_by, 60), search_until: text(policy.timing?.search_until, 60) },
  17. merchant: { allowed_domains: domains(policy.merchant?.allowed_domains), blocked_domains: domains(policy.merchant?.blocked_domains), require_impressum: policy.merchant?.require_impressum === true },
  18. stop_rules: (Array.isArray(policy.stop_rules) ? policy.stop_rules : []).slice(0, 20).map(v => text(v, 300)),
  19. },
  20. account_controls: { spend_cap_chf: amount(controls.cap), whitelist: domains(controls.whitelist) },
  21. };
  22. }
  23. function reviewPolicy(payload, { token, port = 8790, timeoutMs = 2000 } = {}) {
  24. if (!token) return Promise.resolve({ status: 'not_connected', review_required: false });
  25. return new Promise(resolve => {
  26. let done = false;
  27. const finish = result => { if (!done) { done = true; resolve(result); } };
  28. const req = http.request({ hostname: '127.0.0.1', port, path: '/api/internal/shopper/policy-review', method: 'POST', headers: { authorization: `Bearer ${token}`, 'content-type': 'application/json' } }, res => {
  29. let body = '';
  30. res.on('data', chunk => { body += chunk; if (body.length > 64000) { req.destroy(); finish({status:'invalid_response',review_required:false}); } });
  31. res.on('end', () => {
  32. try {
  33. const value = JSON.parse(body);
  34. if (res.statusCode !== 200 || typeof value.status !== 'string' || typeof value.review_required !== 'boolean') throw Error();
  35. finish(value);
  36. } catch { finish({ status:'unavailable',review_required:false }); }
  37. });
  38. });
  39. req.setTimeout(timeoutMs,()=>{req.destroy();finish({status:'timeout',review_required:false});});
  40. req.on('error',()=>finish({status:'unavailable',review_required:false}));
  41. req.end(JSON.stringify(payload));
  42. });
  43. }
  44. function digest(payload) { return crypto.createHash('sha256').update(JSON.stringify(payload)).digest('hex'); }
  45. module.exports = { buildReview, reviewPolicy, digest };