Add custom HTTP interceptor and spinner service for request handling; update CORS settings

jambotron-ui/src/app/components/generate-image.component/generate-image.component.html

@@ -22,6 +22,6 @@
      </mat-card-actions>
 </mat-card>
 
-<button mat-raised-button (click)="zoomPlus()" >Generate</button>
+<!--<button mat-raised-button (click)="zoomPlus()" >Generate</button>
-<button mat-raised-button (click)="zoomMinus()" >Generate</button>
+<button mat-raised-button (click)="zoomMinus()" >Generate</button>-->
 <img src={{image.url}} />

jambotron-ui/src/app/helpers/custom-http-interceptor.spec.ts

@@ -0,0 +1,7 @@
+import { CustomHttpInterceptor } from './custom-http-interceptor';
+
+describe('CustomHttpInterceptor', () => {
+  it('should create an instance', () => {
+    expect(new CustomHttpInterceptor()).toBeTruthy();
+  });
+});

jambotron-ui/src/app/helpers/custom-http-interceptor.ts

@@ -0,0 +1,24 @@
+import {HttpEvent, HttpHandler, HttpInterceptor, HttpRequest, HttpResponse} from '@angular/common/http';
+import {Observable, tap} from 'rxjs';
+import {SpinnerService} from '../services/spinner.service';
+import {Injectable} from '@angular/core';
+
+@Injectable()
+export class CustomHttpInterceptor implements HttpInterceptor {
+
+  constructor(private spinnerService: SpinnerService) { }
+
+  intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
+
+    this.spinnerService.show();
+
+    return next.handle(req)
+      .pipe(tap((event: HttpEvent<any>) => {
+        if (event instanceof HttpResponse) {
+          this.spinnerService.hide();
+        }
+      }, (error) => {
+        this.spinnerService.hide();
+      }));
+  }
+}

jambotron-ui/src/app/services/spinner.service.spec.ts

@@ -0,0 +1,16 @@
+import { TestBed } from '@angular/core/testing';
+
+import { SpinnerService } from './spinner.service';
+
+describe('SpinnerService', () => {
+  let service: SpinnerService;
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({});
+    service = TestBed.inject(SpinnerService);
+  });
+
+  it('should be created', () => {
+    expect(service).toBeTruthy();
+  });
+});

jambotron-ui/src/app/services/spinner.service.ts

@@ -0,0 +1,19 @@
+import { Injectable } from '@angular/core';
+import {BehaviorSubject} from 'rxjs';
+
+@Injectable({ providedIn: 'root'})
+export class SpinnerService {
+  visibility: BehaviorSubject<boolean>;
+
+  constructor() {
+    this.visibility = new BehaviorSubject(false);
+  }
+
+  show() {
+    this.visibility.next(true);
+  }
+
+  hide() {
+    this.visibility.next(false);
+  }
+}

src/main/java/com/jambotronGroup/jambotron/ZhiPuAi/ImageController.java

@@ -12,7 +12,7 @@ import org.springframework.web.bind.annotation.*;
 
 import java.util.List;
 
-@CrossOrigin(origins = "http://localhost:4200", maxAge = 3600, allowCredentials="true")
+@CrossOrigin(origins = "http://localhost:4200, https://pony-sincere-chimp.ngrok-free.app/", maxAge = 3600, allowCredentials="true")
 @RestController
 @RequestMapping("/api/zhipuai")
 public class ImageController {

src/main/java/com/jambotronGroup/jambotron/controllers/AuthController.java

@@ -30,7 +30,7 @@ import java.util.List;
 import java.util.Set;
 import java.util.stream.Collectors;
 //@CrossOrigin(origins = "*", maxAge = 3600)
-@CrossOrigin(origins = "http://localhost:4200,https://a576-5-248-149-207.ngrok-free.app", maxAge = 3600, allowCredentials="true")
+@CrossOrigin(origins = "http://localhost:4200,https://a576-5-248-149-207.ngrok-free.app, https://pony-sincere-chimp.ngrok-free.app", maxAge = 3600, allowCredentials="true")
 @RestController
 @RequestMapping("/api/auth")
 public class AuthController {