add course dashboard service

src/main/webapp/app/overview/course-dashboard/course-dashboard.service.ts

@@ -0,0 +1,15 @@
+import { Injectable } from '@angular/core';
+import { HttpClient, HttpResponse } from '@angular/common/http';
+import { Observable } from 'rxjs';
+import { StudentMetrics } from 'app/entities/student-metrics.model';
+
+@Injectable({ providedIn: 'root' })
+export class CourseDashboardService {
+    public resourceUrl = 'api/metrics';
+
+    constructor(private http: HttpClient) {}
+
+    getCourseMetricsForUser(courseId: number): Observable<HttpResponse<StudentMetrics>> {
+        return this.http.get<StudentMetrics>(`${this.resourceUrl}/course/${courseId}/student`, { observe: 'response' });
+    }
+}