discourse/app/assets/javascripts/admin/controllers/admin-emojis.js

import { sort } from "@ember/object/computed";
import EmberObject, { action, computed } from "@ember/object";
import Controller from "@ember/controller";
import { ajax } from "discourse/lib/ajax";

const ALL_FILTER = "all";

export default Controller.extend({
  filter: null,
  sorting: null,

  init() {
    this._super(...arguments);

    this.setProperties({
      filter: ALL_FILTER,
      sorting: ["group", "name"]
    });
  },

  sortedEmojis: sort("filteredEmojis.[]", "sorting"),

  emojiGroups: computed("model", {
    get() {
      return this.model.mapBy("group").uniq();
    }
  }),

  sortingGroups: computed("emojiGroups.[]", {
    get() {
      return [ALL_FILTER].concat(this.emojiGroups);
    }
  }),

  filteredEmojis: computed("model.[]", "filter", {
    get() {
      if (!this.filter || this.filter === ALL_FILTER) {
        return this.model;
      } else {
        return this.model.filterBy("group", this.filter);
      }
    }
  }),

  @action
  filterGroups(value) {
    this.set("filter", value);
  },

  @action
  emojiUploaded(emoji, group) {
    emoji.url += "?t=" + new Date().getTime();
    emoji.group = group;
    this.model.pushObject(EmberObject.create(emoji));
  },

  @action
  destroyEmoji(emoji) {
    return bootbox.confirm(
      I18n.t("admin.emoji.delete_confirm", { name: emoji.get("name") }),
      I18n.t("no_value"),
      I18n.t("yes_value"),
      destroy => {
        if (destroy) {
          return ajax("/admin/customize/emojis/" + emoji.get("name"), {
            type: "DELETE"
          }).then(() => {
            this.model.removeObject(emoji);
          });
        }
      }
    );
  }
});