tutugodfrey/modela

import functs from '../helpers/functs';
import { Condition } from '../../main/interfaces';

const { confirmPropMatch, getFieldsToReturn, unEscape, parseJson } = functs;
function find(condition: Condition, returnFields=[]) {
  /* return a single object that meet the condition
    condition is single object with property where whose value is further
    an object with key => value pair of the properties of the object to find
  */
  const result = new Promise((resolve, reject) => {
    if (!condition || !condition.where) {
      reject({ message: `Missing object property 'where' to find model` });
    }

    if (!Array.isArray(returnFields)) {
      reject({ message: 'Expected an array of fields to return' });
    }

    if (this.using_db) {
      const queryString = this.getQuery(this.modelName, condition, returnFields);
      return this.dbConnection.query(queryString)
        .then((res: any) => {
          if (!res.rows.length) return reject({ message: `${this.singleModel} not found` });
          return resolve(parseJson(unEscape(res.rows[0]), this.schema));
        })
        .catch((err: any) => reject(err));
    }
    this.model.find((model: any) => {
      const findMatchProps = confirmPropMatch(model, condition);
      if (findMatchProps) return resolve(getFieldsToReturn(model, returnFields));
    });
    reject({ message: `${this.singleModel} not found`});
  });
  return result;
};

export default find;