discourse/app/assets/javascripts/discourse/controllers/change-timestamp.js.es6

import ModalFunctionality from "discourse/mixins/modal-functionality";
import computed from "ember-addons/ember-computed-decorators";
import DiscourseURL from "discourse/lib/url";
import Topic from "discourse/models/topic";

// Modal related to changing the timestamp of posts
export default Ember.Controller.extend(ModalFunctionality, {
  topicController: Ember.inject.controller("topic"),
  saving: false,
  date: "",
  time: "",

  @computed("saving")
  buttonTitle(saving) {
    return saving ? I18n.t("saving") : I18n.t("topic.change_timestamp.action");
  },

  @computed("date", "time")
  createdAt(date, time) {
    return moment(date + " " + time, "YYYY-MM-DD HH:mm:ss");
  },

  @computed("createdAt")
  validTimestamp(createdAt) {
    return moment().diff(createdAt, "minutes") < 0;
  },

  @computed("saving", "date", "validTimestamp")
  buttonDisabled() {
    if (this.get("saving") || this.get("validTimestamp")) return true;
    return Ember.isEmpty(this.get("date"));
  },

  onShow: function() {
    this.setProperties({
      date: moment().format("YYYY-MM-DD")
    });
  },

  actions: {
    changeTimestamp: function() {
      this.set("saving", true);
      const self = this,
        topic = this.get("topicController.model");

      Topic.changeTimestamp(topic.get("id"), this.get("createdAt").unix())
        .then(function() {
          self.send("closeModal");
          self.setProperties({ date: "", time: "", saving: false });
          Em.run.next(() => {
            DiscourseURL.routeTo(topic.get("url"));
          });
        })
        .catch(function() {
          self.flash(I18n.t("topic.change_timestamp.error"), "alert-error");
          self.set("saving", false);
        });
      return false;
    }
  }
});