'use strict';

const { prop } = require('lodash/fp');

const MANY_RELATIONS = ['oneToMany', 'manyToMany', 'manyWay'];
const RF_RELATIONS = ['oneToMany', 'manyToMany', 'manyWay', 'manyToOne', 'oneWay', 'oneToOne'];

const getRelationalFields = modelDef => {
  return modelDef.associations.filter(a => RF_RELATIONS.includes(a.nature)).map(prop('alias'));
};

module.exports = {
  getRelationalFields,
  constants: {
    MANY_RELATIONS,
  },
};