// Hybrid-Chain offline teaching model: crypto-payments-gateway
// Fictional fields/states; NOT an API client, authorization system or production implementation.
// No network calls, credentials, payments or file writes. Review before running.
// Requires Node.js 22+. Run: node --test crypto-payments-gateway.mjs
import test from 'node:test';
import assert from 'node:assert/strict';

export function inspect(record) {
  if (!record.notificationVerified) return 'REJECT_NOTIFICATION';
  if (record.fulfilled) return 'ALREADY_FULFILLED';
  if (record.authoritativeState !== 'paid') return 'WAIT_FOR_PAYMENT';
  return 'READY_FOR_FULFILLMENT_REVIEW';
}

const baseline = {
  "notificationVerified": true,
  "authoritativeState": "paid",
  "fulfilled": false
};
const cases = [
  {
    "name": "payment ready for delivery review",
    "patch": {},
    "expected": "READY_FOR_FULFILLMENT_REVIEW"
  },
  {
    "name": "invalid callback",
    "patch": {
      "notificationVerified": false
    },
    "expected": "REJECT_NOTIFICATION"
  },
  {
    "name": "pending payment",
    "patch": {
      "authoritativeState": "pending"
    },
    "expected": "WAIT_FOR_PAYMENT"
  },
  {
    "name": "repeated paid notification",
    "patch": {
      "fulfilled": true
    },
    "expected": "ALREADY_FULFILLED"
  }
];

for (const example of cases) {
  test(example.name, () => {
    assert.equal(inspect({...baseline, ...example.patch}), example.expected);
  });
}