76150: Implement feedback

src/app/core/shared/file.service.ts

@@ -1,10 +1,11 @@
 import { Inject, Injectable } from '@angular/core';
 import { RawRestResponse } from '../dspace-rest/raw-rest-response.model';
 import { AuthService } from '../auth/auth.service';
-import { take } from 'rxjs/operators';
+import { map, take } from 'rxjs/operators';
 import { NativeWindowRef, NativeWindowService } from '../services/window.service';
 import { URLCombiner } from '../url-combiner/url-combiner';
 import { hasValue } from '../../shared/empty.util';
+import { Observable } from 'rxjs/internal/Observable';
 
 /**
  * Provides utility methods to save files on the client-side.
@@ -17,17 +18,16 @@ export class FileService {
   ) { }
 
   /**
-   * Combines an URL with a short-lived token and sets the current URL to the newly created one
+   * Combines an URL with a short-lived token and sets the current URL to the newly created one and returns it
    *
    * @param url
    *    file url
    */
-  downloadFile(url: string) {
-    this.authService.getShortlivedToken().pipe(take(1)).subscribe((token) => {
-      this._window.nativeWindow.location.href = hasValue(token) ? new URLCombiner(url, `?authentication-token=${token}`).toString() : url;
-    });
+  retrieveFileDownloadLink(url: string): Observable<string> {
+    return this.authService.getShortlivedToken().pipe(take(1), map((token) =>
+      hasValue(token) ? new URLCombiner(url, `?authentication-token=${token}`).toString() : url
+    ));
   }
-
   /**
    * Derives file name from the http response
    * by looking inside content-disposition

src/app/shared/bitstream-download-page/bitstream-download-page.component.spec.ts

@@ -35,7 +35,7 @@ describe('BitstreamDownloadPageComponent', () => {
     });
 
     fileService = jasmine.createSpyObj('fileService', {
-      downloadFile: observableOf('content-url-with-headers')
+      retrieveFileDownloadLink: observableOf('content-url-with-headers')
     });
 
     hardRedirectService = jasmine.createSpyObj('fileService', {

src/app/shared/bitstream-download-page/bitstream-download-page.component.ts

@@ -1,19 +1,17 @@
-import { Component, OnDestroy, OnInit } from '@angular/core';
-import { map } from 'rxjs/operators';
+import { Component, OnInit } from '@angular/core';
+import { filter, map, switchMap, take } from 'rxjs/operators';
 import { ActivatedRoute, Router } from '@angular/router';
-import { Subscription } from 'rxjs/internal/Subscription';
 import { hasValue, isNotEmpty } from '../empty.util';
 import { getRemoteDataPayload, redirectOn4xx } from '../../core/shared/operators';
 import { Bitstream } from '../../core/shared/bitstream.model';
 import { AuthorizationDataService } from '../../core/data/feature-authorization/authorization-data.service';
 import { FeatureID } from '../../core/data/feature-authorization/feature-id';
 import { AuthService } from '../../core/auth/auth.service';
-import { combineLatest as observableCombineLatest, Observable } from 'rxjs';
+import { combineLatest as observableCombineLatest, Observable, of as observableOf } from 'rxjs';
 import { FileService } from '../../core/shared/file.service';
 import { HardRedirectService } from '../../core/services/hard-redirect.service';
 import { getForbiddenRoute } from '../../app-routing-paths';
 import { RemoteData } from '../../core/data/remote-data';
-import { tap } from 'rxjs/internal/operators/tap';
 
 @Component({
   selector: 'ds-bitstream-download-page',
@@ -22,12 +20,11 @@ import { tap } from 'rxjs/internal/operators/tap';
 /**
  * Page component for downloading a bitstream
  */
-export class BitstreamDownloadPageComponent implements OnInit, OnDestroy {
+export class BitstreamDownloadPageComponent implements OnInit {
 
   bitstream$: Observable<Bitstream>;
   bitstreamRD$: Observable<RemoteData<Bitstream>>;
 
-  subs: Subscription[] = [];
 
   constructor(
     private route: ActivatedRoute,
@@ -46,22 +43,34 @@ export class BitstreamDownloadPageComponent implements OnInit, OnDestroy {
       map((data) => data.bitstream));
 
     this.bitstream$ = this.bitstreamRD$.pipe(
-      tap((v) => console.log('dfdf', v)),
       redirectOn4xx(this.router, this.auth),
       getRemoteDataPayload()
     );
 
-    this.subs.push(this.bitstream$.subscribe((bitstream) => {
+    this.bitstream$.pipe(
+      switchMap((bitstream: Bitstream) => {
         const isAuthorized$ = this.authorizationService.isAuthorized(FeatureID.CanDownload, isNotEmpty(bitstream) ? bitstream.self : undefined);
         const isLoggedIn$ = this.auth.isAuthenticated();
-
-      this.subs.push(observableCombineLatest(isAuthorized$, isLoggedIn$)
-        .subscribe(([isAuthorized, isLoggedIn]) => {
+        return observableCombineLatest([isAuthorized$, isLoggedIn$, observableOf(bitstream)]);
+      }),
+      filter(([isAuthorized, isLoggedIn, bitstream]: [boolean, boolean, Bitstream]) => hasValue(isAuthorized) && hasValue(isLoggedIn)),
+      take(1),
+      switchMap(([isAuthorized, isLoggedIn, bitstream]: [boolean, boolean, Bitstream]) => {
         if (isAuthorized && isLoggedIn) {
-            const fileLink$ = this.fileService.downloadFile(bitstream._links.content.href);
-            this.subs.push(fileLink$.subscribe((fileLink) => {
-              this.hardRedirectService.redirect(fileLink);
+          return this.fileService.retrieveFileDownloadLink(bitstream._links.content.href).pipe(
+            filter((fileLink) => hasValue(fileLink)),
+            take(1),
+            map((fileLink) => {
+              return [isAuthorized, isLoggedIn, bitstream, fileLink];
+              // return [isAuthorized, isLoggedIn, bitstream];
             }));
+        } else {
+          return [[isAuthorized, isLoggedIn, bitstream, '']];
+        }
+      })
+    ).subscribe(([isAuthorized, isLoggedIn, bitstream, fileLink]: [boolean, boolean, Bitstream, string]) => {
+      if (isAuthorized && isLoggedIn && isNotEmpty(fileLink)) {
+        this.hardRedirectService.redirect(fileLink);
       } else if (isAuthorized && !isLoggedIn) {
         this.hardRedirectService.redirect(bitstream._links.content.href);
       } else if (!isAuthorized && isLoggedIn) {
@@ -70,14 +79,6 @@ export class BitstreamDownloadPageComponent implements OnInit, OnDestroy {
         this.auth.setRedirectUrl(this.router.url);
         this.router.navigateByUrl('login');
       }
-        }));
-    }));
-
-  }
-
-  ngOnDestroy(): void {
-    this.subs
-      .filter((subscription) => hasValue(subscription))
-      .forEach((subscription) => subscription.unsubscribe());
+    });
   }
 }

src/app/shared/object-detail/my-dspace-result-detail-element/item-detail-preview/item-detail-preview.component.ts

@@ -82,7 +82,7 @@ export class ItemDetailPreviewComponent {
       first())
       .subscribe((url) => {
         const fileUrl = `${url}/${uuid}/content`;
-        this.fileService.downloadFile(fileUrl);
+        this.fileService.retrieveFileDownloadLink(fileUrl);
       });
   }
 

src/app/submission/sections/upload/file/section-upload-file.component.spec.ts

@@ -41,7 +41,7 @@ import { FormBuilderService } from '../../../../shared/form/builder/form-builder
 
 function getMockFileService(): FileService {
   return jasmine.createSpyObj('FileService', {
-    downloadFile: jasmine.createSpy('downloadFile'),
+    retrieveFileDownloadLink: jasmine.createSpy('retrieveFileDownloadLink'),
     getFileNameFromResponseContentDisposition: jasmine.createSpy('getFileNameFromResponseContentDisposition')
   });
 }
@@ -232,7 +232,7 @@ describe('SubmissionSectionUploadFileComponent test suite', () => {
 
       tick();
 
-      expect(fileService.downloadFile).toHaveBeenCalled();
+      expect(fileService.retrieveFileDownloadLink).toHaveBeenCalled();
     }));
 
     it('should save Bitstream File data properly when form is valid', fakeAsync(() => {

src/app/submission/sections/upload/file/section-upload-file.component.ts

@@ -224,7 +224,7 @@ export class SubmissionSectionUploadFileComponent implements OnChanges, OnInit {
       first())
       .subscribe((url) => {
         const fileUrl = `${url}/${this.fileData.uuid}/content`;
-        this.fileService.downloadFile(fileUrl);
+        this.fileService.retrieveFileDownloadLink(fileUrl);
       });
   }