const fs = require('fs')
const path = require('path');
const spawn = require('child_process').spawn

const projectRoot = path.normalize(path.join(__dirname, '..'));
const outputLog = path.join(projectRoot, '.test-failures.log');
const collectorScript = path.join(projectRoot, 'scripts', 'test-failure-collector.js');

// Start with a fresh output log on each run.
if (fs.existsSync(outputLog)) {
  fs.unlinkSync(outputLog);
}

// Run all tests, specifying the collector script.
spawn('lerna', ['run', '--no-bail', 'testci', '--stream', '--', '--file', `${collectorScript}`], { stdio: 'inherit' })
  .on('exit', function(code) {
    // If a failure occurred, the log file will have been created. Print it.
    if (fs.existsSync(outputLog)) {
      console.error(fs.readFileSync(outputLog, 'utf8').trim());
    }

    // Propagate the exit code.
    process.exit(code);
  });