Development: Reimplement course icon file upload

src/main/webapp/app/course/manage/course-management.service.ts

@@ -19,6 +19,7 @@ import { CourseManagementDetailViewDto } from 'app/course/manage/course-manageme
 import { StudentDTO } from 'app/entities/student-dto.model';
 import { EntityTitleService, EntityType } from 'app/shared/layouts/navbar/entity-title.service';
 import { convertDateFromClient } from 'app/utils/date.utils';
+import { objectToJsonBlob } from 'app/utils/blob-util';
 
 export type EntityResponseType = HttpResponse<Course>;
 export type EntityArrayResponseType = HttpResponse<Course[]>;
@@ -37,19 +38,37 @@ export class CourseManagementService {
     /**
      * creates a course using a POST request
      * @param course - the course to be created on the server
+     * @param courseImage - the course icon file
      */
-    create(course: Course): Observable<EntityResponseType> {
+    create(course: Course, courseImage?: Blob): Observable<EntityResponseType> {
         const copy = CourseManagementService.convertCourseDatesFromClient(course);
-        return this.http.post<Course>(this.resourceUrl, copy, { observe: 'response' }).pipe(map((res: EntityResponseType) => this.processCourseEntityResponseType(res)));
+        const formData = new FormData();
+        formData.append('course', objectToJsonBlob(copy));
+        if (courseImage) {
+            // The image was cropped by us and is a blob, so we need to set a placeholder name for the server check
+            formData.append('file', courseImage, 'placeholderName.png');
+        }
+
+        return this.http.post<Course>(this.resourceUrl, formData, { observe: 'response' }).pipe(map((res: EntityResponseType) => this.processCourseEntityResponseType(res)));
     }
 
     /**
      * updates a course using a PUT request
-     * @param course - the course to be updated
-     */
-    update(course: Course): Observable<EntityResponseType> {
-        const copy = CourseManagementService.convertCourseDatesFromClient(course);
-        return this.http.put<Course>(this.resourceUrl, copy, { observe: 'response' }).pipe(map((res: EntityResponseType) => this.processCourseEntityResponseType(res)));
+     * @param courseId - the id of the course to be updated
+     * @param courseUpdate - the updates to the course
+     * @param courseImage - the course icon file
+     */
+    update(courseId: number, courseUpdate: Course, courseImage?: Blob): Observable<EntityResponseType> {
+        const copy = CourseManagementService.convertCourseDatesFromClient(courseUpdate);
+        const formData = new FormData();
+        formData.append('course', objectToJsonBlob(copy));
+        if (courseImage) {
+            // The image was cropped by us and is a blob, so we need to set a placeholder name for the server check
+            formData.append('file', courseImage, 'placeholderName.png');
+        }
+        return this.http
+            .put<Course>(`${this.resourceUrl}/${courseId}`, formData, { observe: 'response' })
+            .pipe(map((res: EntityResponseType) => this.processCourseEntityResponseType(res)));
     }
 
     /**

src/main/webapp/app/course/manage/course-update.component.html

@@ -55,7 +55,7 @@ <h4 *ngIf="course.id" id="jhi-course-heading-edit" jhiTranslate="artemisApp.cour
                     <div class="row">
                         <div class="col-6">
                             <image-cropper
-                                [imageChangedEvent]="imageChangedEvent"
+                                [imageFile]="courseImageUploadFile"
                                 [maintainAspectRatio]="true"
                                 [aspectRatio]="1"
                                 [resizeToWidth]="200"
@@ -67,12 +67,6 @@ <h4 *ngIf="course.id" id="jhi-course-heading-edit" jhiTranslate="artemisApp.cour
                                 [style.display]="showCropper ? null : 'none'"
                             ></image-cropper>
                         </div>
-                        <div *ngIf="showCropper" class="col-3">
-                            <button class="btn btn-outline-primary icon-upload" (click)="uploadCourseImage()" [disabled]="isUploadingCourseImage || !courseImageFileName">
-                                <span *ngIf="isUploadingCourseImage" jhiTranslate="artemisApp.course.uploading"></span>
-                                <span *ngIf="!isUploadingCourseImage" jhiTranslate="artemisApp.course.upload"></span>
-                            </button>
-                        </div>
                     </div>
                 </div>
                 <div class="form-group">

src/main/webapp/app/course/manage/course-update.component.ts

@@ -39,11 +39,8 @@ export class CourseUpdateComponent implements OnInit {
     onlineCourseConfigurationForm: FormGroup;
     course: Course;
     isSaving: boolean;
-    courseImageFile?: File;
-    courseImageFileName: string;
-    isUploadingCourseImage: boolean;
-    imageChangedEvent: any = '';
-    croppedImage: any = '';
+    courseImageUploadFile?: File;
+    croppedImage?: string;
     showCropper = false;
     presentationScoreEnabled = false;
     complaintsEnabled = true; // default value
@@ -193,8 +190,7 @@ export class CourseUpdateComponent implements OnInit {
             },
             { validators: CourseValidator },
         );
-        this.courseImageFileName = this.course.courseIcon!;
-        this.croppedImage = this.course.courseIcon ? this.course.courseIcon : '';
+        this.croppedImage = this.course.courseIcon;
         this.presentationScoreEnabled = this.course.presentationScore !== 0;
     }
 
@@ -220,10 +216,15 @@ export class CourseUpdateComponent implements OnInit {
         const course = this.courseForm.getRawValue();
         course.onlineCourseConfiguration = this.isOnlineCourse() ? this.onlineCourseConfigurationForm.getRawValue() : null;
 
+        let file = undefined;
+        if (this.courseImageUploadFile && this.croppedImage) {
+            const base64Data = this.croppedImage.replace('data:image/png;base64,', '');
+            file = base64StringToBlob(base64Data, 'image/*');
+        }
         if (this.course.id !== undefined) {
-            this.subscribeToSaveResponse(this.courseService.update(course));
+            this.subscribeToSaveResponse(this.courseService.update(this.course.id, course, file));
         } else {
-            this.subscribeToSaveResponse(this.courseService.create(course));
+            this.subscribeToSaveResponse(this.courseService.create(course, file));
         }
     }
 
@@ -258,12 +259,10 @@ export class CourseUpdateComponent implements OnInit {
      * @function set course icon
      * @param event {object} Event object which contains the uploaded file
      */
-    setCourseImage(event: any): void {
-        this.imageChangedEvent = event;
-        if (event.target.files.length) {
-            const fileList: FileList = event.target.files;
-            this.courseImageFile = fileList[0];
-            this.courseImageFileName = this.courseImageFile.name;
+    setCourseImage(event: Event): void {
+        const element = event.currentTarget as HTMLInputElement;
+        if (element.files?.[0]) {
+            this.courseImageUploadFile = element.files[0];
         }
     }
 
@@ -278,33 +277,6 @@ export class CourseUpdateComponent implements OnInit {
         this.showCropper = true;
     }
 
-    /**
-     * @function uploadBackground
-     * @desc Upload the selected file (from "Upload Background") and use it for the question's backgroundFilePath
-     */
-    uploadCourseImage(): void {
-        const contentType = 'image/*';
-        const base64Data = this.croppedImage.replace('data:image/png;base64,', '');
-        const file = base64StringToBlob(base64Data, contentType);
-        const fileName = this.courseImageFileName;
-
-        this.isUploadingCourseImage = true;
-        this.fileUploaderService.uploadFile(file, fileName).then(
-            (response) => {
-                this.courseForm.patchValue({ courseIcon: response.path });
-                this.isUploadingCourseImage = false;
-                this.courseImageFile = undefined;
-                this.courseImageFileName = response.path!;
-            },
-            () => {
-                this.isUploadingCourseImage = false;
-                this.courseImageFile = undefined;
-                this.courseImageFileName = this.course.courseIcon!;
-            },
-        );
-        this.showCropper = false;
-    }
-
     /**
      * Action on unsuccessful course creation or edit
      * @param error The error for providing feedback

src/main/webapp/app/shared/http/file-uploader.service.ts

@@ -55,7 +55,7 @@ export class FileUploaderService {
             return Promise.reject(new Error('File is too big! Maximum allowed file size: ' + MAX_FILE_SIZE / (1024 * 1024) + ' MB.'));
         }
 
-        const keepFileName: boolean = !!options && options.keepFileName;
+        const keepFileName: boolean = !!options?.keepFileName;
         const formData = new FormData();
         formData.append('file', file, fileName);
         return lastValueFrom(this.http.post<FileUploadResponse>(endpoint + `?keepFileName=${keepFileName}`, formData));

src/main/webapp/app/shared/image-cropper/component/image-cropper.component.ts

@@ -28,6 +28,7 @@ import { CropperPosition } from 'app/shared/image-cropper/interfaces/cropper-pos
 import { ImageCroppedEvent } from 'app/shared/image-cropper/interfaces/image-cropped-event.interface';
 
 // Note: this component and all files in the image-cropper folder were taken from https://github.com/Mawi137/ngx-image-cropper because the framework was not maintained anymore
+// Note: Partially adapted to fit Artemis needs
 
 @Component({
     // tslint:disable-next-line:component-selector
@@ -37,10 +38,10 @@ import { ImageCroppedEvent } from 'app/shared/image-cropper/interfaces/image-cro
     changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class ImageCropperComponent implements OnChanges, OnInit {
-    private settings = new CropperSettings();
-    private setImageMaxSizeRetries = 0;
-    private moveStart: MoveStart;
-    private loadedImage?: LoadedImage;
+    settings = new CropperSettings();
+    setImageMaxSizeRetries = 0;
+    moveStart: MoveStart;
+    loadedImage?: LoadedImage;
 
     safeImgDataUrl: SafeUrl | string;
     safeTransformStyle: SafeStyle | string;
@@ -52,10 +53,10 @@ export class ImageCropperComponent implements OnChanges, OnInit {
     @ViewChild('wrapper', { static: true }) wrapper: ElementRef<HTMLDivElement>;
     @ViewChild('sourceImage', { static: false }) sourceImage: ElementRef<HTMLDivElement>;
 
-    @Input() imageChangedEvent: any;
-    @Input() imageURL: string;
-    @Input() imageBase64: string;
-    @Input() imageFile: File;
+    @Input() imageChangedEvent?: Event;
+    @Input() imageURL?: string;
+    @Input() imageBase64?: string;
+    @Input() imageFile?: File;
 
     @Input() format: OutputFormat = this.settings.format;
     @Input() transform: ImageTransform = {};
@@ -107,6 +108,10 @@ export class ImageCropperComponent implements OnChanges, OnInit {
         this.reset();
     }
 
+    ngOnInit(): void {
+        this.settings.stepSize = this.initialStepSize;
+    }
+
     ngOnChanges(changes: SimpleChanges): void {
         this.onChangesUpdateSettings(changes);
         this.onChangesInputImage(changes);
@@ -156,7 +161,10 @@ export class ImageCropperComponent implements OnChanges, OnInit {
             this.reset();
         }
         if (changes.imageChangedEvent && this.isValidImageChangedEvent()) {
-            this.loadImageFile(this.imageChangedEvent.target.files[0]);
+            const element = this.imageChangedEvent?.currentTarget as HTMLInputElement;
+            if (element.files) {
+                this.loadImageFile(element.files[0]);
+            }
         }
         if (changes.imageURL && this.imageURL) {
             this.loadImageFromURL(this.imageURL);
@@ -170,7 +178,12 @@ export class ImageCropperComponent implements OnChanges, OnInit {
     }
 
     private isValidImageChangedEvent(): boolean {
-        return this.imageChangedEvent?.target?.files?.length > 0;
+        if (!this.imageChangedEvent?.currentTarget) {
+            return false;
+        }
+        const element = this.imageChangedEvent.currentTarget as HTMLInputElement;
+
+        return !!element.files?.length;
     }
 
     private setCssTransform() {
@@ -187,10 +200,6 @@ export class ImageCropperComponent implements OnChanges, OnInit {
         );
     }
 
-    ngOnInit(): void {
-        this.settings.stepSize = this.initialStepSize;
-    }
-
     private reset(): void {
         this.imageVisible = false;
         this.loadedImage = undefined;

src/test/cypress/integration/CourseManagement.spec.ts

@@ -1,5 +1,5 @@
 import { Interception } from 'cypress/types/net-stubbing';
-import { COURSE_BASE } from '../support/requests/CourseManagementRequests';
+import { COURSE_BASE, convertCourseAfterMultiPart } from '../support/requests/CourseManagementRequests';
 import { BASE_API, GET, POST } from '../support/constants';
 import { artemis } from '../support/ArtemisTesting';
 import { CourseManagementPage } from '../support/pageobjects/course/CourseManagementPage';
@@ -40,9 +40,9 @@ describe('Course management', () => {
         let courseId: number;
 
         beforeEach(() => {
-            artemisRequests.courseManagement.createCourse(false, courseName, courseShortName).then((response: Cypress.Response<Course>) => {
-                course = response.body;
-                courseId = response.body!.id!;
+            artemisRequests.courseManagement.createCourse(false, courseName, courseShortName).then((response) => {
+                course = convertCourseAfterMultiPart(response);
+                courseId = course.id!;
             });
         });
 

src/test/cypress/integration/Logout.spec.ts

@@ -2,6 +2,7 @@ import { artemis } from '../support/ArtemisTesting';
 import { authTokenKey } from '../support/constants';
 import { Course } from '../../../main/webapp/app/entities/course.model';
 import { ModelingExercise } from '../../../main/webapp/app/entities/modeling-exercise.model';
+import { convertCourseAfterMultiPart } from '../support/requests/CourseManagementRequests';
 
 const courseRequests = artemis.requests.courseManagement;
 const users = artemis.users;
@@ -18,7 +19,7 @@ describe('Logout tests', () => {
         cy.login(admin);
 
         courseRequests.createCourse(true).then((response) => {
-            course = response.body;
+            course = convertCourseAfterMultiPart(response);
             courseRequests.createModelingExercise({ course }).then((resp: Cypress.Response<ModelingExercise>) => {
                 modelingExercise = resp.body;
             });

src/test/cypress/integration/exam/ExamAssessment.spec.ts

@@ -3,7 +3,7 @@ import { Course } from 'app/entities/course.model';
 import { ExerciseGroup } from 'app/entities/exercise-group.model';
 import { Exam } from 'app/entities/exam.model';
 import { artemis } from '../../support/ArtemisTesting';
-import { CypressAssessmentType, CypressExamBuilder } from '../../support/requests/CourseManagementRequests';
+import { CypressAssessmentType, CypressExamBuilder, convertCourseAfterMultiPart } from '../../support/requests/CourseManagementRequests';
 import partiallySuccessful from '../../fixtures/programming_exercise_submissions/partially_successful/submission.json';
 import dayjs, { Dayjs } from 'dayjs/esm';
 import textSubmission from '../../fixtures/text_exercise_submission/text_exercise_submission.json';
@@ -45,7 +45,7 @@ describe('Exam assessment', () => {
     before('Create a course', () => {
         cy.login(admin);
         courseManagementRequests.createCourse(true).then((response) => {
-            course = response.body;
+            course = convertCourseAfterMultiPart(response);
             courseManagementRequests.addStudentToCourse(course, artemis.users.getStudentOne());
             courseManagementRequests.addTutorToCourse(course, artemis.users.getTutor());
         });

src/test/cypress/integration/exam/ExamCreationDeletion.spec.ts

@@ -1,6 +1,6 @@
 import { Interception } from 'cypress/types/net-stubbing';
 import { Course } from 'app/entities/course.model';
-import { CypressExamBuilder } from '../../support/requests/CourseManagementRequests';
+import { CypressExamBuilder, convertCourseAfterMultiPart } from '../../support/requests/CourseManagementRequests';
 import dayjs from 'dayjs/esm';
 import { artemis } from '../../support/ArtemisTesting';
 import { generateUUID } from '../../support/utils';
@@ -23,7 +23,7 @@ describe('Exam creation/deletion', () => {
     before(() => {
         cy.login(artemis.users.getAdmin());
         courseManagementRequests.createCourse().then((response) => {
-            course = response.body;
+            course = convertCourseAfterMultiPart(response);
         });
     });
 

src/test/cypress/integration/exam/ExamDateVerification.spec.ts

@@ -1,7 +1,7 @@
 import { ExerciseGroup } from 'app/entities/exercise-group.model';
 import { Course } from 'app/entities/course.model';
 import { Exam } from 'app/entities/exam.model';
-import { CypressExamBuilder } from '../../support/requests/CourseManagementRequests';
+import { CypressExamBuilder, convertCourseAfterMultiPart } from '../../support/requests/CourseManagementRequests';
 import dayjs from 'dayjs/esm';
 import { artemis } from '../../support/ArtemisTesting';
 import { generateUUID } from '../../support/utils';
@@ -22,7 +22,7 @@ describe('Exam date verification', () => {
     before(() => {
         cy.login(artemis.users.getAdmin());
         courseManagementRequests.createCourse().then((response) => {
-            course = response.body;
+            course = convertCourseAfterMultiPart(response);
             courseManagementRequests.addStudentToCourse(course, artemis.users.getStudentOne());
         });
     });

src/test/cypress/integration/exam/ExamManagement.spec.ts

@@ -1,7 +1,7 @@
 import { Interception } from 'cypress/types/net-stubbing';
 import { Exam } from 'app/entities/exam.model';
 import { Course } from 'app/entities/course.model';
-import { CypressExamBuilder } from '../../support/requests/CourseManagementRequests';
+import { CypressExamBuilder, convertCourseAfterMultiPart } from '../../support/requests/CourseManagementRequests';
 import { artemis } from '../../support/ArtemisTesting';
 import { generateUUID } from '../../support/utils';
 
@@ -31,7 +31,7 @@ describe('Exam management', () => {
     before(() => {
         cy.login(users.getAdmin());
         courseManagementRequests.createCourse().then((response) => {
-            course = response.body;
+            course = convertCourseAfterMultiPart(response);
             courseManagementRequests.addStudentToCourse(course, users.getStudentOne());
             const examConfig = new CypressExamBuilder(course).title(examTitle).build();
             courseManagementRequests.createExam(examConfig).then((examResponse) => {

src/test/cypress/integration/exam/ExamParticipation.spec.ts

@@ -1,7 +1,7 @@
 import { QuizExercise } from 'app/entities/quiz/quiz-exercise.model';
 import { Exam } from 'app/entities/exam.model';
 import { BASE_API, GET } from '../../support/constants';
-import { CypressExamBuilder } from '../../support/requests/CourseManagementRequests';
+import { CypressExamBuilder, convertCourseAfterMultiPart } from '../../support/requests/CourseManagementRequests';
 import { artemis } from '../../support/ArtemisTesting';
 import dayjs from 'dayjs/esm';
 import submission from '../../fixtures/programming_exercise_submissions/all_successful/submission.json';
@@ -37,7 +37,7 @@ describe('Exam participation', () => {
     before(() => {
         cy.login(users.getAdmin());
         courseRequests.createCourse(true).then((response) => {
-            course = response.body;
+            course = convertCourseAfterMultiPart(response);
             const examContent = new CypressExamBuilder(course)
                 .visibleDate(dayjs().subtract(3, 'days'))
                 .startDate(dayjs().subtract(2, 'days'))