exercise.service.ts

import { Injectable } from '@angular/core';
import { HttpClient, HttpParams, HttpHeaders } from '@angular/common/http';
import { Observable } from 'rxjs';

import { SERVER_API_URL } from 'app/app.constants';
import { ArtemisExerciseInfo } from 'app/shared/model/artemis-exercise-info.model';

@Injectable({ providedIn: 'root' })
export class ExerciseService {
  public resourceUrl = SERVER_API_URL + 'api/exercise/';

  constructor(private http: HttpClient) {}

  public loadExerciseFile(exerciseId: string, filePath: string): Observable<string> {
    const headers = new HttpHeaders(); // .set('Content-Type', 'text/plain; charset=utf-8');
    const options: HttpParams = new HttpParams();
    options.append('filePath', filePath);

    return this.http.get<string>(this.resourceUrl + exerciseId, {
      headers,
      params: new HttpParams().set('filePath', filePath),
      responseType: 'text' as 'json',
    });
  }

  /**
   * Used on init of import page, this function passes the retrieved (from Artemis)
   * exerciseUrl to the server
   * @param exerciseUrl
   */
  public importExerciseInfoFromArtemis(exerciseToken: string): Observable<ArtemisExerciseInfo> {
    return this.http.get<ArtemisExerciseInfo>(`${this.resourceUrl}imported-exercise-info/${exerciseToken}`);
  }

  /**
   * Submits an ArtemisExerciseInfo object to server and triggers its import
   * @param exerciseInfo to submit and import
   */
  public submitExerciseInfoForImport(exerciseInfo: ArtemisExerciseInfo, exerciseToken: string, gitlabGroupId: number) {
    return this.http.post<ArtemisExerciseInfo>(`${this.resourceUrl}import-exercise/${exerciseToken}/${gitlabGroupId}`, exerciseInfo);
  }
}