// tests/cdrFeedQueue.test.js

import test from 'node:test';
import assert from 'node:assert/strict';

import {
  enqueueCdrFeedFetch,
  _resetCdrFeedQueueForTests,
  _setCdrFeedCooldownForTests,
} from '../services/cdrFeedQueue.js';

test.afterEach(() => {
  _resetCdrFeedQueueForTests();
});

test('enqueueCdrFeedFetch runs immediately when idle', async () => {
  let ran = false;
  await enqueueCdrFeedFetch(async () => { ran = true; return 1; });
  assert.equal(ran, true);
});

test('enqueueCdrFeedFetch queues second call and invokes onQueued', async () => {
  _setCdrFeedCooldownForTests(150);

  let releaseFirst;
  const firstGate = new Promise((resolve) => { releaseFirst = resolve; });

  const first = enqueueCdrFeedFetch(async () => {
    await firstGate;
    return 'first';
  });

  let queuedInfo = null;
  const second = enqueueCdrFeedFetch(async () => 'second', {
    onQueued: (info) => { queuedInfo = info; },
  });

  await new Promise((r) => setTimeout(r, 20));
  assert.ok(queuedInfo, 'onQueued should fire for second caller');
  assert.ok(queuedInfo.waitMs >= 100, `expected meaningful wait, got ${queuedInfo.waitMs}`);
  assert.equal(queuedInfo.position, 2);

  releaseFirst();
  assert.equal(await first, 'first');
  assert.equal(await second, 'second');
});