import { test } from 'node:test';
import assert from 'node:assert/strict';
import { AccountBooks, handle } from '../src/books.js';
import { SUBJECTS } from '../src/subjects.js';

test('adjust credits prepaid and statement lists credits usage payments', () => {
  const books = new AccountBooks();
  handle(
    SUBJECTS.BALANCE_ADJUST,
    { customerId: 'c1', veraeUserId: 'vu_abc', cents: 500, reason: 'goodwill', agent: 'cs' },
    books,
  );
  handle(SUBJECTS.USAGE_RECORDED, { customerId: 'c1', endpointId: 'timestamp', cents: 4 }, books);
  handle(SUBJECTS.PAYMENT_RECORDED, { customerId: 'c1', cents: 1000, reason: 'reload' }, books);
  const st = handle(SUBJECTS.STATEMENT_GET, { customerId: 'c1' }, books);
  assert.equal(st.prepaidCents, 1496);
  assert.equal(st.veraeUserId, 'vu_abc');
  assert.equal(st.credits[0].cents, 500);
  assert.equal(st.usage[0].endpointId, 'timestamp');
  assert.equal(st.payments[0].kind, 'payment');
});