ADK changes

src/app/components/message-feedback/message-feedback.component.html

@@ -1,14 +1,14 @@
 <div class="message-feedback-container">
   <div class="feedback-buttons">
     <button mat-icon-button [matTooltip]="i18n.goodResponseTooltip" (click)="sendFeedback('up')">
-      @if (selectedFeedback() === 'up') {
+      @if (feedbackDirection() === 'up') {
         <mat-icon>thumb_up_filled</mat-icon>
       } @else {
         <mat-icon>thumb_up</mat-icon>
       }
     </button>
     <button mat-icon-button [matTooltip]="i18n.badResponseTooltip" (click)="sendFeedback('down')">
-      @if (selectedFeedback() === 'down') {
+      @if (feedbackDirection() === 'down') {
         <mat-icon>thumb_down_filled</mat-icon>
       } @else {
         <mat-icon>thumb_down</mat-icon>

src/app/components/message-feedback/message-feedback.component.ts

@@ -16,7 +16,8 @@
  */
 
 import {CommonModule} from '@angular/common';
-import {Component, computed, inject, input, signal} from '@angular/core';
+import {Component, computed, effect, inject, input, resource, signal} from '@angular/core';
+import {rxResource, toSignal} from '@angular/core/rxjs-interop';
 import {FormControl, ReactiveFormsModule} from '@angular/forms';
 import {MatButtonModule} from '@angular/material/button';
 import {MatFormFieldModule} from '@angular/material/form-field';
@@ -50,23 +51,35 @@ export class MessageFeedbackComponent {
   protected readonly i18n = inject(MessageFeedbackMessagesInjectionToken);
   private readonly feedbackService = inject(FEEDBACK_SERVICE);
 
-  readonly isDetailedFeedbackVisible = signal(false);
-  readonly selectedFeedback =
+  private readonly existingFeedback = rxResource({
+    params: () => ({
+      sessionName: this.sessionName(),
+      eventId: this.eventId(),
+    }),
+    stream: ({params}) =>
+        this.feedbackService.getFeedback(params.sessionName, params.eventId)
+  });
+  private readonly selectedFeedbackDirection =
       signal<Feedback['direction']|undefined>(undefined);
+
+  readonly feedbackDirection = computed(
+      () => this.selectedFeedbackDirection() ??
+          this.existingFeedback.value()?.direction);
+  readonly isDetailedFeedbackVisible = signal(false);
   readonly feedbackPlaceholder = computed(() => {
-    return this.selectedFeedback() === 'up' ?
+    return this.feedbackDirection() === 'up' ?
         this.i18n.feedbackCommentPlaceholderUp :
         this.i18n.feedbackCommentPlaceholderDown;
   });
   readonly comment = new FormControl('');
 
   sendFeedback(direction: Feedback['direction']) {
     this.isDetailedFeedbackVisible.set(true);
-    this.selectedFeedback.set(direction);
+    this.selectedFeedbackDirection.set(direction);
   }
 
   onDetailedFeedbackSubmitted() {
-    const direction = this.selectedFeedback();
+    const direction = this.feedbackDirection();
     if (!direction) return;
 
     this.feedbackService.sendFeedback(this.sessionName(), this.eventId(), {
@@ -77,7 +90,7 @@ export class MessageFeedbackComponent {
   }
 
   onDetailedFeedbackCancelled() {
-    this.selectedFeedback.set(undefined);
+    this.selectedFeedbackDirection.set(undefined);
     this.resetDetailedFeedback();
   }
 

src/app/core/services/feedback.service.ts

@@ -18,6 +18,7 @@
 import {Injectable} from '@angular/core';
 
 import {Feedback, FeedbackService as FeedbackServiceInterface} from './interfaces/feedback';
+import {Observable, of} from 'rxjs';
 
 @Injectable({providedIn: 'root'})
 export class FeedbackService implements FeedbackServiceInterface {
@@ -26,4 +27,9 @@ export class FeedbackService implements FeedbackServiceInterface {
       eventId: string,
       feedback: Partial<Feedback>,
       ): void {}
+
+  getFeedback(sessionId: string, eventId: string):
+      Observable<Feedback|undefined> {
+    return of(undefined);
+  }
 }

src/app/core/services/interfaces/feedback.ts

@@ -16,6 +16,7 @@
  */
 
 import {InjectionToken} from '@angular/core';
+import {Observable} from 'rxjs';
 
 /**
  * Feedback metadata.
@@ -36,6 +37,8 @@ export declare abstract class FeedbackService {
       eventId: string,
       feedback: Partial<Feedback>,
       ): void;
+  abstract getFeedback(sessionId: string, eventId: string):
+      Observable<Feedback|undefined>;
 }
 
 /**

src/app/core/services/testing/mock-feedback.service.ts

@@ -15,11 +15,15 @@
  * limitations under the License.
  */
 
+import {of} from 'rxjs';
+
 import {FeedbackService} from '../interfaces/feedback';
 
 /**
  * Mock feedback service for testing.
  */
 export class MockFeedbackService implements Partial<FeedbackService> {
-  sendFeedback = jasmine.createSpy('sendFeedback');
+  sendFeedback =
+      jasmine.createSpy('sendFeedback').and.returnValue(of(undefined));
+  getFeedback = jasmine.createSpy('getFeedback').and.returnValue(of(undefined));
 }