/**
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

'use strict';

const lintOnFiles = require('../eslint');
const execFileSync = require('child_process').execFileSync;
const mergeBase = execFileSync('git', ['merge-base', 'HEAD', 'master'], {
  stdio: 'pipe',
  encoding: 'utf-8',
}).trim();
const changedFiles = execFileSync(
  'git',
  ['diff', '--name-only', '--diff-filter=ACMRTUB', mergeBase],
  {
    stdio: 'pipe',
    encoding: 'utf-8',
  }
)
  .trim()
  .toString()
  .split('\n');
const jsFiles = changedFiles.filter(file => file.match(/.js$/g));

const report = lintOnFiles(jsFiles);
if (report.errorCount > 0 || report.warningCount > 0) {
  console.log('Lint failed for changed files.');
  process.exit(1);
} else {
  console.log('Lint passed for changed files.');
}