import uuid from "uuid/v4";
import models from "../../models";

const _createCar = (brandId, active, year, done) => {
  models.Cars.create({
    name: uuid(),
    year,
    active,
    brandId
  })
    .then(item => {
      done(null, item);
    })
    .catch(done);
};

const _createBrand = done => {
  models.Brands.create({
    name: uuid()
  })
    .then(item => {
      done(null, item);
    })
    .catch(done);
};

const _createBrands = (total, done) => {
  const created = [];
  const next = () => {
    if (total === created.length) {
      done(null, created);
    }
  };

  for (let i = 0; i < total; i += 1) {
    _createBrand((err, res) => {
      if (!err) {
        created.push(res);
        next();
      }
    });
  }
};

const _truncateCars = (tables, done) => {
  if (tables.indexOf("Cars") === -1) {
    done(null);
    return true;
  }

  models.Cars.destroy({
    where: {}
  })
    .then(() => done(null))
    .catch(err => done(err));
  return true;
};

const _truncateBrands = (tables, done) => {
  if (tables.indexOf("Brands") === -1) {
    done(null);
    return true;
  }

  models.Brands.destroy({
    where: {}
  })
    .then(() => done(null))
    .catch(err => done(err));
  return true;
};

const _truncate = (tables, done) => {
  _truncateCars(tables, errCars => {
    if (errCars) {
      done(errCars);
    } else {
      _truncateBrands(tables, errBrands => {
        done(errBrands);
      });
    }
  });
};

export const createBrand = _createBrand;
export const createBrands = _createBrands;
export const createCar = _createCar;
export const truncate = _truncate;