import test from 'node:test';
import assert from 'node:assert/strict';
import { readFileSync } from 'node:fs';

import { loadConfig } from '../src/lib/config.mjs';

const ENV_KEYS = [
  'HISTORY_WRITER_DERIVED_REFRESH_MAX_EVENT_AGE_MS',
  'INTENT_REQUEST_INVENTORY_MAX_AGE_MS',
];

function withCleanEnv(fn) {
  const previous = Object.fromEntries(ENV_KEYS.map((key) => [key, process.env[key]]));
  for (const key of ENV_KEYS) delete process.env[key];
  try {
    return fn();
  } finally {
    for (const [key, value] of Object.entries(previous)) {
      if (value == null) delete process.env[key];
      else process.env[key] = value;
    }
  }
}

test('history writer derived refresh replay cutoff keeps the approved default', () => withCleanEnv(() => {
  const config = loadConfig({ envPath: '/tmp/unrip-no-such-env-file' });

  assert.equal(config.historyWriterDerivedRefreshMaxEventAgeMs, 30000);
  assert.equal(config.historyWriterDerivedRefreshMaxEventAgeMs, config.intentRequestInventoryMaxAgeMs);
}));

test('legacy request freshness env no longer ships in kubernetes config', () => {
  const manifest = readFileSync(new URL('../deploy/k8s/base/unrip.yaml', import.meta.url), 'utf8');

  assert.match(manifest, /HISTORY_WRITER_DERIVED_REFRESH_MAX_EVENT_AGE_MS: "30000"/);
  assert.doesNotMatch(manifest, /INTENT_REQUEST_INVENTORY_MAX_AGE_MS/);
});