1/* eslint-disable max-len */
2var fs = require('fs');
3var os = require('os');
4var path = require('path');
5var env = process.env;
6
7var ADBLOCK = is(env.ADBLOCK);
8var COLOR = is(env.npm_config_color);
9var DISABLE_OPENCOLLECTIVE = is(env.DISABLE_OPENCOLLECTIVE);
10var SILENT = ['silent', 'error', 'warn'].indexOf(env.npm_config_loglevel) !== -1;
11var OPEN_SOURCE_CONTRIBUTOR = is(env.OPEN_SOURCE_CONTRIBUTOR);
12var MINUTE = 60 * 1000;
13
14// you could add a PR with an env variable for your CI detection
15var CI = [
16  'BUILD_NUMBER',
17  'CI',
18  'CONTINUOUS_INTEGRATION',
19  'DRONE',
20  'RUN_ID'
21].some(function (it) { return is(env[it]); });
22
23var BANNER = '\u001B[96mThank you for using core-js (\u001B[94m https://github.com/zloirock/core-js \u001B[96m) for polyfilling JavaScript standard library!\u001B[0m\n\n' +
24             '\u001B[96mThe project needs your help! Please consider supporting of core-js on Open Collective or Patreon: \u001B[0m\n' +
25             '\u001B[96m>\u001B[94m https://opencollective.com/core-js \u001B[0m\n' +
26             '\u001B[96m>\u001B[94m https://www.patreon.com/zloirock \u001B[0m\n\n' +
27             '\u001B[96mAlso, the author of core-js (\u001B[94m https://github.com/zloirock \u001B[96m) is looking for a good job -)\u001B[0m\n';
28
29function is(it) {
30  return !!it && it !== '0' && it !== 'false';
31}
32
33function isBannerRequired() {
34  if (ADBLOCK || CI || DISABLE_OPENCOLLECTIVE || SILENT || OPEN_SOURCE_CONTRIBUTOR) return false;
35  var file = path.join(os.tmpdir(), 'core-js-banners');
36  var banners = [];
37  try {
38    var DELTA = Date.now() - fs.statSync(file).mtime;
39    if (DELTA >= 0 && DELTA < MINUTE * 3) {
40      banners = JSON.parse(fs.readFileSync(file, 'utf8'));
41      if (banners.indexOf(BANNER) !== -1) return false;
42    }
43  } catch (error) {
44    banners = [];
45  }
46  try {
47    banners.push(BANNER);
48    fs.writeFileSync(file, JSON.stringify(banners), 'utf8');
49  } catch (error) { /* empty */ }
50  return true;
51}
52
53function showBanner() {
54  // eslint-disable-next-line no-console,no-control-regex
55  console.log(COLOR ? BANNER : BANNER.replace(/\u001B\[\d+m/g, ''));
56}
57
58if (isBannerRequired()) showBanner();
59