DEV: Fix optionalService in decorator form (#29042)

…and remove unused injections

app/assets/javascripts/discourse/app/components/reviewable-item.js

@@ -49,7 +49,7 @@ export default class ReviewableItem extends Component {
   @service siteSettings;
   @service currentUser;
   @service composer;
-  @optionalService("admin-tools") adminTools;
+  @optionalService adminTools;
 
   updating = null;
   editing = false;

app/assets/javascripts/discourse/app/components/topic-timeline.js

@@ -2,7 +2,6 @@ import Component from "@glimmer/component";
 import { tracked } from "@glimmer/tracking";
 import { action } from "@ember/object";
 import { service } from "@ember/service";
-import optionalService from "discourse/lib/optional-service";
 import { bind } from "discourse-common/utils/decorators";
 
 export default class TopicTimeline extends Component {
@@ -13,8 +12,6 @@ export default class TopicTimeline extends Component {
   @tracked docked = false;
   @tracked dockedBottom = false;
 
-  adminTools = optionalService();
-
   constructor() {
     super(...arguments);
 

app/assets/javascripts/discourse/app/controllers/user.js

@@ -15,7 +15,7 @@ export default class UserController extends Controller.extend(CanCheckEmails) {
   @service currentUser;
   @service router;
   @service dialog;
-  @optionalService("admin-tools") adminTools;
+  @optionalService adminTools;
 
   @controller("user-notifications") userNotifications;
 

app/assets/javascripts/discourse/app/lib/optional-service.js

@@ -2,8 +2,16 @@ import { computed } from "@ember/object";
 import { getOwner } from "@ember/owner";
 import { dasherize } from "@ember/string";
 
-export default function (name) {
+export default function (target, name, descriptor) {
-  return computed(function (defaultName) {
+  name ??= target;
+
+  const decorator = computed(function (defaultName) {
     return getOwner(this).lookup(`service:${name || dasherize(defaultName)}`);
   });
+
+  if (descriptor) {
+    return decorator(target, name, descriptor);
+  } else {
+    return decorator;
+  }
 }

app/assets/javascripts/discourse/tests/unit/utils/optional-service-test.js

@@ -0,0 +1,59 @@
+import Component from "@ember/component";
+import Service from "@ember/service";
+import { render } from "@ember/test-helpers";
+import { hbs } from "ember-cli-htmlbars";
+import { module, test } from "qunit";
+import optionalService from "discourse/lib/optional-service";
+import { setupRenderingTest } from "discourse/tests/helpers/component-test";
+
+class FooService extends Service {
+  name = "foo";
+}
+
+class BarService extends Service {
+  name = "bar";
+}
+
+const EmberObjectComponent = Component.extend({
+  name: "",
+  layout: hbs`<span class="ember-object-component">{{this.foo.name}} {{this.baz.name}}</span>`,
+
+  foo: optionalService(),
+  baz: optionalService("bar"),
+});
+
+class NativeComponent extends Component {
+  @optionalService foo;
+  @optionalService("bar") baz;
+
+  name = "";
+  layout = hbs`<span class="native-component">{{this.foo.name}} {{this.baz.name}}</span>`;
+}
+
+module("Unit | Utils | optional-service", function (hooks) {
+  setupRenderingTest(hooks);
+
+  hooks.beforeEach(function () {
+    this.registry.register("service:foo", FooService);
+    this.registry.register("service:bar", BarService);
+  });
+
+  test("optionalService works in EmberObject classes", async function (assert) {
+    this.registry.register(
+      "component:ember-object-component",
+      EmberObjectComponent
+    );
+
+    await render(hbs`<EmberObjectComponent />`);
+
+    assert.dom(".ember-object-component").hasText("foo bar");
+  });
+
+  test("optionalService works in native classes", async function (assert) {
+    this.registry.register("component:native-component", NativeComponent);
+
+    await render(hbs`<NativeComponent />`);
+
+    assert.dom(".native-component").hasText("foo bar");
+  });
+});

plugins/chat/assets/javascripts/discourse/components/chat-message.gjs

@@ -14,7 +14,6 @@ import { modifier } from "ember-modifier";
 import { eq, not } from "truth-helpers";
 import DButton from "discourse/components/d-button";
 import concatClass from "discourse/helpers/concat-class";
-import optionalService from "discourse/lib/optional-service";
 import { applyValueTransformer } from "discourse/lib/transformer";
 import { updateUserStatusOnMention } from "discourse/lib/update-user-status-on-mention";
 import isZoomed from "discourse/lib/zoom-check";
@@ -65,7 +64,6 @@ export default class ChatMessage extends Component {
   @service router;
   @service toasts;
   @service modal;
-  @optionalService adminTools;
 
   @tracked isActive = false;