discourse-solved/assets/javascripts/discourse/connectors/topic-navigation/no-answer.gjs

import Component from "@ember/component";
import { later } from "@ember/runloop";
import { classNames, tagName } from "@ember-decorators/component";
import TopicNavigationPopup from "discourse/components/topic-navigation-popup";
import { isTesting } from "discourse/lib/environment";
import { i18n } from "discourse-i18n";

const ONE_WEEK = 7 * 24 * 60 * 60 * 1000; // milliseconds
const MAX_DURATION_WITH_NO_ANSWER = ONE_WEEK;
const DISPLAY_DELAY = isTesting() ? 0 : 2000;

@tagName("div")
@classNames("topic-navigation-outlet", "no-answer")
export default class NoAnswer extends Component {
  static shouldRender(args, context) {
    return !context.site.mobileView;
  }

  init() {
    super.init(...arguments);
    this.set("show", false);
    this.setProperties({
      oneWeek: ONE_WEEK,
      show: false,
    });
    later(() => {
      if (!this.element || this.isDestroying || this.isDestroyed) {
        return;
      }
      const topic = this.topic;
      const currentUser = this.currentUser;

      // show notice if:
      // - user can accept answer
      // - it does not have an accepted answer
      // - topic is old
      // - topic has at least one reply from another user that can be accepted
      if (
        !topic.accepted_answer &&
        currentUser &&
        topic.user_id === currentUser.id &&
        moment() - moment(topic.created_at) > MAX_DURATION_WITH_NO_ANSWER &&
        topic.postStream.posts.some(
          (post) => post.user_id !== currentUser.id && post.can_accept_answer
        )
      ) {
        this.set("show", true);
      }
    }, DISPLAY_DELAY);
  }

  <template>
    {{#if this.show}}
      <TopicNavigationPopup
        @popupId="solved-notice"
        @dismissDuration={{this.oneWeek}}
      >
        <h3>{{i18n "solved.no_answer.title"}}</h3>
        <p>{{i18n "solved.no_answer.description"}}</p>
      </TopicNavigationPopup>
    {{/if}}
  </template>
}