// -- 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 {wpDirectivesModule} from "../../../angular-modules";
import {scopedObservable} from "../../../helpers/angular-rx-utils";
import {WorkPackageResourceInterface} from "../../api/api-v3/hal-resources/work-package-resource.service";
import {WorkPackageCacheService} from "../work-package-cache.service";

export class WorkPackageWatcherButtonController {

  public workPackage:WorkPackageResourceInterface;
  public buttonText:string;
  public buttonTitle:string;
  public buttonClass:string;
  public buttonId:string;
  public watchIconClass:string;

  constructor(public $scope:ng.IScope,
              public $rootScope:ng.IRootScopeService,
              public I18n:op.I18n,
              public wpCacheService:WorkPackageCacheService) {

    scopedObservable(
      $scope,
      wpCacheService.loadWorkPackage(this.workPackage.id).values$())
      .subscribe((wp: WorkPackageResourceInterface) => {
        this.workPackage = wp;
        this.setWatchStatus();
      });
  }

  public get isWatched() {
    return this.workPackage.hasOwnProperty('unwatch');
  }

  public get displayWatchButton() {
    return this.isWatched || this.workPackage.hasOwnProperty('watch');
  }

  public toggleWatch() {
    const toggleLink = this.nextStateLink();

    toggleLink(toggleLink.$link.payload).then(() => {
      this.wpCacheService.loadWorkPackage(this.workPackage.id, true);
    });
  };

  public nextStateLink() {
    const linkName = this.isWatched ? 'unwatch' : 'watch';
    return this.workPackage[linkName];
  }

  private setWatchStatus() {
    if (this.isWatched) {
      this.buttonTitle = this.I18n.t('js.label_unwatch_work_package');
      this.buttonText = this.I18n.t('js.label_unwatch');
      this.buttonClass = '-active';
      this.buttonId = 'unwatch-button';
      this.watchIconClass = 'icon-watched';

    } else {
      this.buttonTitle = this.I18n.t('js.label_watch_work_package');
      this.buttonText = this.I18n.t('js.label_watch');
      this.buttonClass = '';
      this.buttonId = 'watch-button';
      this.watchIconClass = 'icon-unwatched';
    }
  }
}

function wpWatcherButton() {
  return {
    replace: true,
    templateUrl: '/components/work-packages/wp-watcher-button/wp-watcher-button.directive.html',

    scope: {
      workPackage: '=',
      showText: '=',
      disabled: '='
    },

    bindToController: true,
    controller: WorkPackageWatcherButtonController,
    controllerAs: 'vm'
  };
}



wpDirectivesModule.directive('wpWatcherButton', wpWatcherButton);