1/**
2 * Copyright (C) 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16import { HttpClient, HttpErrorResponse, HttpParams, HttpResponse } from '@angular/common/http';
17import { Observable, throwError } from 'rxjs';
18
19export class ServiceBase {
20  url: string;
21  protected constructor(public httpClient: HttpClient) {
22  }
23  protected handleError(error: HttpErrorResponse) {
24    if (error.error instanceof ErrorEvent) {
25      // A client-side or network error occurred. Handle it accordingly.
26      console.error('An error occurred:', error.error.message);
27    } else {
28      // The backend returned an unsuccessful response code.
29      // The response body may contain clues as to what went wrong,
30      console.error(
31        `Backend returned code ${error.status}, ` +
32        `body was: ${error.error}`);
33    }
34    // return an observable with a user-facing error message
35    return throwError(error);
36  }
37  public getCount(filterInfo: string): Observable<number> {
38    const url = this.url + 'count';
39    return this.httpClient.post<number>(url, {filter: filterInfo});
40  }
41}
42