D-Net

import {Injectable} from '@angular/core';

import {HttpClient} from '@angular/common/http';

import {EnvProperties} from './properties/env-properties';

import {Observable, of} from "rxjs";

import {catchError, map} from "rxjs/operators";

@Injectable({

  providedIn: "root"

})

export class IndexInfoService {

  constructor(private http: HttpClient) {

  }

  getLastIndexDate(properties: EnvProperties): Observable<any> {

    let url = properties.indexInfoAPI;

    return this.http.get((properties.useLongCache)? (properties.cacheUrl+encodeURIComponent(url)): url).pipe(map(res => res['claim_load_date'])).pipe(catchError(err => {return of(null)}));

  }

  getStatsLastDate(properties: EnvProperties): Observable<any> {

    let url = properties.indexInfoAPI;

    return this.http.get((properties.useLongCache)? (properties.cacheUrl+encodeURIComponent(url)): url).pipe(map(res => res['stats_update_date'])).pipe(catchError(err => {return of(null)}));

  }

  getLastOrcidUpdateDate(properties: EnvProperties): Observable<any> {

    let url = properties.indexInfoAPI;

    return this.http.get((properties.useLongCache)? (properties.cacheUrl+encodeURIComponent(url)): url).pipe(map(res => res['orcid_update_date'])).pipe(catchError(err => {return of(null)}));

  }

}