'use strict';

var _bluebird = require('bluebird');

var _yargs = require('../core/yargs');

var _migrator = require('../core/migrator');

var _helpers = require('../helpers');

var _helpers2 = _interopRequireDefault(_helpers);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

exports.builder = function (yargs) {
  return (0, _yargs._baseOptions)(yargs).option('to', {
    describe: 'Revert to the provided migration',
    default: 0,
    type: 'string'
  }).help().argv;
};

exports.handler = function () {
  var _ref = (0, _bluebird.coroutine)(function* (args) {
    // legacy, gulp used to do this
    yield _helpers2.default.config.init();

    yield migrationUndoAll(args);

    process.exit(0);
  });

  return function (_x) {
    return _ref.apply(this, arguments);
  };
}();

function migrationUndoAll(args) {
  return (0, _migrator.getMigrator)('migration', args).then(function (migrator) {
    return (0, _migrator.ensureCurrentMetaSchema)(migrator).then(function () {
      return migrator.executed();
    }).then(function (migrations) {
      if (migrations.length === 0) {
        _helpers2.default.view.log('No executed migrations found.');
        process.exit(0);
      }
    }).then(function () {
      return migrator.down({ to: args.to || 0 });
    });
  }).catch(function (e) {
    return _helpers2.default.view.error(e);
  });
}