import test from 'node:test';
import assert from 'node:assert/strict';
import { EventEmitter } from 'node:events';
import { PassThrough } from 'node:stream';
import { readZipLines } from '../src/extract/rfb-extractor.mjs';

function fakeChild() {
  const child = new EventEmitter();
  child.stdout = new PassThrough();
  child.stderr = new PassThrough();
  child.kill = () => child.emit('exit', null, 'SIGTERM');
  return child;
}

test('readZipLines rejeita leitor ZIP que encerra com codigo nao zero e inclui stderr limitado', async () => {
  const child = fakeChild();
  const zip = readZipLines({ name: 'fake', argsFor: () => [] }, 'ruim.zip', { spawn: () => child });
  child.stderr.write('arquivo corrompido');
  child.stdout.end();
  child.emit('exit', 2, null);
  await assert.rejects(zip.done, /codigo 2.*arquivo corrompido/i);
});

test('readZipLines rejeita erro de spawn mas nao trata kill intencional como corrupcao', async () => {
  const failed = fakeChild();
  const zipFailed = readZipLines({ name: 'missing', argsFor: () => [] }, 'x.zip', { spawn: () => failed });
  failed.emit('error', new Error('ENOENT'));
  await assert.rejects(zipFailed.done, /ENOENT/);

  const cancelled = fakeChild();
  const zipCancelled = readZipLines({ name: 'fake', argsFor: () => [] }, 'x.zip', { spawn: () => cancelled });
  zipCancelled.close();
  await zipCancelled.done;
});

test('readZipLines propaga erro do stream de saida do leitor', async () => {
  const child = fakeChild();
  const zip = readZipLines({ name: 'fake', argsFor: () => [] }, 'x.zip', { spawn: () => child });
  child.stdout.emit('error', new Error('falha de leitura'));
  await assert.rejects(zip.done, /falha de leitura/i);
});