openproject/frontend/app/components/work-packages/work-package-cache.service.ts

// -- copyright
// OpenProject is a project management system.
// Copyright (C) 2012-2015 the OpenProject Foundation (OPF)
//
// 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 doc/COPYRIGHT.rdoc for more details.
// ++


import {opWorkPackagesModule} from "../../angular-modules";
import {WorkPackageResource} from "../api/api-v3/hal-resources/work-package-resource.service";
import {ApiWorkPackagesService} from "../api/api-work-packages/api-work-packages.service";
import {states} from "../../states";
import IScope = angular.IScope;
import {State} from "../../helpers/reactive-fassade";


export class WorkPackageCacheService {

  // private workPackageCache: {[id: number]: WorkPackageResource} = {};

  // private workPackagesSubject = new Rx.ReplaySubject<{[id: number]: WorkPackageResource}>(1);

  private newWorkPackageCreatedSubject = new Rx.Subject<WorkPackageResource>();

  /*@ngInject*/
  constructor(private $rootScope: IScope, private apiWorkPackages: ApiWorkPackagesService) {
  }

  newWorkPackageCreated(wp: WorkPackageResource) {
    this.newWorkPackageCreatedSubject.onNext(wp);
  }

  updateWorkPackage(wp: WorkPackageResource) {
    // this.updateWorkPackageList([wp]);
    states.workPackages.put(wp.id.toString(), wp);
  }

  updateWorkPackageList(list: WorkPackageResource[]) {
    for (const wp of list) {
      // var cached = this.workPackageCache[wp.id];

      // TODO RR Question: This check doesn't seem to be right!?
      // if (cached && cached.dirty) {
      //   this.workPackageCache[wp.id] = cached;
      // } else {
      //   this.workPackageCache[wp.id] = wp;
      // }

      states.workPackages.put(wp.id.toString(), wp);
    }
    // this.workPackagesSubject.onNext(this.workPackageCache);
  }

  loadWorkPackage(workPackageId: number, forceUpdate = false): State<WorkPackageResource> {
    // if (forceUpdate || this.workPackageCache[workPackageId] === undefined) {
    //   this.apiWorkPackages.loadWorkPackageById(workPackageId, forceUpdate).then(wp => {
    //     this.updateWorkPackage(wp);
    //   });
    // }
    //
    // return this.workPackagesSubject
    //   .map(cache => cache[workPackageId])
    //   .filter(wp => wp !== undefined);

    const state = states.workPackages.get(workPackageId.toString());
    if (forceUpdate || state.isPristine()) {
      // state.clear();
      // this.apiWorkPackages.loadWorkPackageById(workPackageId, forceUpdate).then(wp => {
      //   state.put(wp);
      // });
      state.putFromPromise(this.apiWorkPackages.loadWorkPackageById(workPackageId, forceUpdate));
    }
    return state;
  }

  onNewWorkPackage(): Rx.Observable<WorkPackageResource> {
    return this.newWorkPackageCreatedSubject.asObservable();
  }

}

opWorkPackagesModule.service('wpCacheService', WorkPackageCacheService);