#!/usr/bin/env node
'use strict';

var Bluebird = require('bluebird');

var CLI       = require('../lib/cli');
var Changelog = require('../lib');
var File      = require('../lib/file');

CLI.parse(process.argv);

return Bluebird.all([
  Changelog.generate(CLI),
  File.readIfExists(CLI.file)
])
.spread(function (newLogs, oldLogs) {
  return File.writeToFile(CLI.file, newLogs + oldLogs);
})
.catch(function (err) {
  console.error(err);
  process.exit(1);
});