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

import { shouldRunDerivedRefreshForEvent } from '../src/core/history-writer-refresh-policy.mjs';

test('history writer derived refresh policy skips stale replayed events', () => {
  assert.equal(shouldRunDerivedRefreshForEvent({
    event: {
      ingested_at: '2026-05-05T07:56:03.203Z',
    },
    now: '2026-05-07T14:12:00.000Z',
    maxEventAgeMs: 300000,
  }), false);
});

test('history writer derived refresh policy runs for fresh and undated events', () => {
  assert.equal(shouldRunDerivedRefreshForEvent({
    event: {
      ingested_at: '2026-05-07T14:11:52.729Z',
    },
    now: '2026-05-07T14:12:00.000Z',
    maxEventAgeMs: 300000,
  }), true);
  assert.equal(shouldRunDerivedRefreshForEvent({
    event: {},
    now: '2026-05-07T14:12:00.000Z',
    maxEventAgeMs: 300000,
  }), true);
});

test('history writer derived refresh policy skips events outside request freshness window', () => {
  assert.equal(shouldRunDerivedRefreshForEvent({
    event: {
      ingested_at: '2026-05-07T14:11:20.000Z',
    },
    now: '2026-05-07T14:12:00.000Z',
    maxEventAgeMs: 30000,
  }), false);

  assert.equal(shouldRunDerivedRefreshForEvent({
    event: {
      ingested_at: '2026-05-07T14:11:45.000Z',
    },
    now: '2026-05-07T14:12:00.000Z',
    maxEventAgeMs: 30000,
  }), true);
});

test('history writer derived refresh policy prefers source observed time over replay ingestion time', () => {
  assert.equal(shouldRunDerivedRefreshForEvent({
    event: {
      observed_at: '2026-04-07T15:20:19.909Z',
      ingested_at: '2026-05-07T14:07:23.119Z',
    },
    now: '2026-05-07T14:07:24.000Z',
    maxEventAgeMs: 30000,
  }), false);
});