import { test } from 'node:test';
import assert from 'node:assert/strict';
import fs from 'node:fs';
import os from 'node:os';
import path from 'node:path';
import { loadEnvFile } from '../server/env.js';

test('.env laden ohne bestehende Variablen zu überschreiben', () => {
  const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'rot-'));
  const file = path.join(dir, '.env');
  fs.writeFileSync(file, '# Kommentar\nROT_A=eins\nROT_B="zwei drei" \nROT_C=vier # optional\nexport ROT_D=\'fünf\'\nROT_E=\nROT_F=            # optional  Erklärung\nROT_G=wert # Kommentar\n');
  process.env.ROT_A = 'vorher';
  assert.equal(loadEnvFile(file), true);
  assert.equal(process.env.ROT_A, 'vorher');
  assert.equal(process.env.ROT_B, 'zwei drei');
  assert.equal(process.env.ROT_C, 'vier');
  assert.equal(process.env.ROT_D, 'fünf');
  assert.equal(process.env.ROT_E, '');
  assert.equal(process.env.ROT_F, '', 'Kommentar nach leerem Wert ist kein Wert');
  assert.equal(process.env.ROT_G, 'wert');
  assert.equal(loadEnvFile(path.join(dir, 'fehlt')), false);
});