Ontica/Empiria.Land.Intranet

/**
 * @license
 * Copyright (c) La Vía Óntica SC, Ontica LLC and contributors. All rights reserved.
 *
 * See LICENSE.txt in the project root for complete license information.
 */

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

import { HttpService } from '@app/core';

import { Observable } from 'rxjs';

import { reportHttpProgress, Progress } from './http-progress';

import { Saver, SAVER } from './saver.provider';


@Injectable()
export class FileDownloadService {

  constructor(private http: HttpService,
              @Inject(SAVER) private save: Saver) { }


  downloadWithProgress(url: string, filename?: string): Observable<Progress> {

    return this.http.get(url, {reportProgress: true,
                               observe: 'events',
                               responseType: 'blob'})
      .pipe(
        reportHttpProgress(blob => this.save(blob, filename))
      );
  }


  download(url: string, filename?: string) {
    let link = document.createElement('a');
    link.style.display = 'none';
    link.href = url;

    if (filename) {
      link.setAttribute('download', filename);
    } else {
      link.setAttribute('target', '_blank');
    }

    document.body.appendChild(link);
    link.click();
    link.remove();
  }

}