agneta-platform/pages/scripts/helpers/date.js

Agneta Platform - Integrate and customize business applications

/*   Copyright 2017 Agneta Network Applications, LLC.
 *
 *   Source file: pages/scripts/helpers/date.js
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */
var moment = require('moment-timezone');
var isMoment = moment.isMoment;
var isDate = require('util').isDate;

module.exports = function(locals) {

  var project = locals.project;

  function output(date, format, lang, timezone) {
    if (date == null) date = moment();
    if (!isMoment(date)) date = moment(isDate(date) ? date : new Date(date));

    if (lang) date = date.locale(lang);
    if (timezone) date = date.tz(timezone);

    return date.format(format);
  }

  function toISOString(date) {
    if (date == null) {
      return new Date().toISOString();
    }

    if (date instanceof Date || isMoment(date)) {
      return date.toISOString();
    }

    return new Date(date).toISOString();
  }

  function dateHelper(date, format) {
    /* jshint validthis: true */
    var config = this.config;
    return output(date, format || config.date_format, getLanguage(this), config.timezone);
  }

  function timeHelper(date, format) {
    /* jshint validthis: true */
    var config = this.config;
    return output(date, format || config.time_format, getLanguage(this), config.timezone);
  }

  function fullDateHelper(date, format) {
    /* jshint validthis: true */
    if (format) {
      return output(date, format, getLanguage(this), this.config.timezone);
    } else {
      return this.date(date) + ' ' + this.time(date);
    }
  }

  function timeTagHelper(date, format) {
    /* jshint validthis: true */
    var config = this.config;
    return '<time datetime="' + toISOString(date) + '">' + this.date(date, format, getLanguage(this), config.timezone) + '</time>';
  }

  function getLanguage(ctx) {
    return ctx.page.lang || ctx.page.language || ctx.config.language;
  }

  project.extend.helper.register('date', dateHelper);
  project.extend.helper.register('date_xml', toISOString);
  project.extend.helper.register('time', timeHelper);
  project.extend.helper.register('full_date', fullDateHelper);
  project.extend.helper.register('time_tag', timeTagHelper);
  project.extend.helper.register('moment', moment);

};