ridibooks / simple-notifier

const moment = require('moment');

/**

 * Format all dates in the received model

 * @param {Array|Date|Object} model

 * @param {string} [formatString]

 * @returns {*}

 */

exports.formatDates = (model, formatString, utcOffset) => {

  if (model instanceof Array) {

    return model.map(item => exports.formatDates(item, formatString, utcOffset));

  } else if (model instanceof Date || model instanceof moment) {

    return exports.formatDate(model, formatString, utcOffset);

  } else if (model instanceof Object) {

    const result = {};

    Object.keys(model).forEach((key) => { result[key] = exports.formatDates(model[key], formatString, utcOffset); });

    return result;

  }

  return model;

};

/**

 * Localize date

 * @param {Date} date

 * @param {number} [utcOffset]

 * @returns {moment}

 */

exports.toLocalDate = (date, utcOffset) => moment(date).utcOffset(typeof utcOffset === 'undefined' ? 9 : utcOffset);

/**

 * Format date to string

 * @param {Date} date

 * @param {string} [formatString]

 * @param {number} [utcOffset]

 * @returns {string}

 */

exports.formatDate = (date, formatString, utcOffset) => exports.toLocalDate(date, utcOffset).format(formatString);