discourse/app/assets/javascripts/discourse/controllers/avatar-selector.js.es6

import computed from "ember-addons/ember-computed-decorators";
import ModalFunctionality from "discourse/mixins/modal-functionality";
import { ajax } from 'discourse/lib/ajax';

import { allowsImages } from 'discourse/lib/utilities';

export default Ember.Controller.extend(ModalFunctionality, {
  @computed("selected", "system_avatar_upload_id", "gravatar_avatar_upload_id", "custom_avatar_upload_id")
  selectedUploadId(selected, system, gravatar, custom) {
    switch (selected) {
      case "system": return system;
      case "gravatar": return gravatar;
      default: return custom;
    }
  },

  @computed("selected", "system_avatar_template", "gravatar_avatar_template", "custom_avatar_template")
  selectedAvatarTemplate(selected, system, gravatar, custom) {
    switch (selected) {
      case "system": return system;
      case "gravatar": return gravatar;
      default: return custom;
    }
  },

  @computed()
  allowAvatarUpload() {
    return this.siteSettings.allow_uploaded_avatars && allowsImages();
  },

  actions: {
    uploadComplete() {
      this.set("selected", "uploaded");
    },

    refreshGravatar() {
      this.set("gravatarRefreshDisabled", true);
      return ajax(`/user_avatar/${this.get("username")}/refresh_gravatar.json`, { method: "POST" })
        .then(result => {
          if (!result.gravatar_avatar_upload_id) {
            this.set("gravatarFailed", true);
          } else {
            this.setProperties({
              gravatarFailed: false,
              gravatar_avatar_template: result.gravatar_avatar_template,
              gravatar_avatar_upload_id: result.gravatar_upload_id,
            });
          }
        })
        .finally(() => this.set("gravatarRefreshDisabled", false));
    }
  }

});