index.js

'use strict';
var moment = require('moment');
var _ = require('lodash');
var template = require('./template');
/**
 *
 * @param time
 * @param form
 * @param language
 * @returns {string}
 */
function format(time, form, language) {
  if (form == 'weibo') {
    return format(time, template.weibo, 'zh-cn');
  } else if (form == 'weiboMobile') {
    return format(time, template.weiboMobile, 'zh-cn');
  } else if (form == 'wechat') {
    return format(time, template.wechat, 'zh-cn');
  } else {
    var timeResult;
    if (language) {
      moment.locale(language);
    }
    var nowTime = moment().format("YYYY-MM-DD HH:mm:ss");
    var now = moment(nowTime).unix();
    var timeUnix = moment(time).unix();
    var diff = now - timeUnix;
    var result = form.map(function (condition) {
      if (condition.limit && condition.above) {
        if (diff < condition.limit && diff > condition.above) {
          timeResult = formatTime(time, diff, condition.unit);
          if (condition.leftString && condition.rightString) {
            return condition.leftString + timeResult + condition.rightString;
          } else if (condition.leftString) {
            return condition.leftString + timeResult;
          } else if (condition.rightString) {
            return timeResult + condition.rightString;
          } else {
            return timeResult;
          }
        } else {
          return 0;
        }
      } else {
        if (diff < condition.limit || diff > condition.above) {
          timeResult = formatTime(time, diff, condition.unit);
          if (condition.leftString && condition.rightString) {
            return condition.leftString + timeResult + condition.rightString;
          } else if (condition.leftString) {
            return condition.leftString + timeResult;
          } else if (condition.rightString) {
            return timeResult + condition.rightString;
          } else {
            return timeResult;
          }
        } else {
          return 0;
        }
      }
    });
    var resultTime = _.compact(result)[0];
    return resultTime;
  }
}
/**
 *
 * @param time
 * @param diff
 * @param unit
 * @returns {*}
 */
var formatTime = function (time, diff, unit) {
  var result;
  switch (unit) {
    case undefined :
      result = '';
      break;
    case 'second':
      result = diff;
      break;
    case 'minute':
      result = _.floor(diff / 60);
      break;
    case 'hour':
      result = _.floor(diff / (60 * 60));
      break;
    case 'date':
      result = _.floor(diff / (60 * 60 * 24));
      break;
    case 'week':
      result = _.floor(diff / (60 * 60 * 24 * 7));
      break;
    default:
      result = moment(time).format(unit);
  }
  return result;
};
module.exports = format;