opf/openproject

// -- copyright
// OpenProject is an open source project management software.
// Copyright (C) 2012-2024 the OpenProject GmbH
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License version 3.
//
// OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
// Copyright (C) 2006-2013 Jean-Philippe Lang
// Copyright (C) 2010-2013 the ChiliProject Team
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
//
// See COPYRIGHT and LICENSE files for more details.
//++

import { Injector } from '@angular/core';
import { combineLatest, Observable } from 'rxjs';
import { map } from 'rxjs/operators';

import { WorkPackageResource } from 'core-app/features/hal/resources/work-package-resource';
import { FileLinksResourceService } from 'core-app/core/state/file-links/file-links.service';
import { AttachmentsResourceService } from 'core-app/core/state/attachments/attachments.service';

export function workPackageFilesCount(
  workPackage:WorkPackageResource,
  injector:Injector,
):Observable<number> {
  const attachmentService = injector.get(AttachmentsResourceService);
  const fileLinkService = injector.get(FileLinksResourceService);

  return combineLatest(
    [
      attachmentService.collection(workPackage.$links.attachments.href || ''),
      fileLinkService.collection(workPackage.$links.fileLinks?.href || ''),
    ],
  ).pipe(
    map(([a, f]) => a.length + f.length),
  );
}