/********************************************************************************
 * Copyright (c) 2015-2020 Contributors to the Eclipse Foundation
 *
 * See the NOTICE file(s) distributed with this work for additional
 * information regarding copyright ownership.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 ********************************************************************************/


import {Injectable, Output, EventEmitter} from '@angular/core';
import {Http, Response, Headers, RequestOptions} from '@angular/http';
import {Observable} from 'rxjs';

import {MDMItem} from '../core/mdm-item';
import {Node} from './node';
import {PropertyService} from '../core/property.service';
import {NodeService} from './node.service';

import {MDMNotificationService} from '../core/mdm-notification.service';

import { TranslateService } from '@ngx-translate/core';

@Injectable()
export class NavigatorService {

  @Output() onOpenInTree = new EventEmitter<MDMItem[]>();

  public selectedNodeChanged: EventEmitter<Node> = new EventEmitter<Node>();
  private selectedNode: Node;

  constructor(private nodeService: NodeService,
              private notificationService: MDMNotificationService,
              private translateService: TranslateService) {

  }

  setSelectedNode(node: Node) {
    this.selectedNode = node;
    this.fireSelectedNodeChanged(node);
  }

  fireSelectedNodeChanged(node: Node) {
    this.selectedNodeChanged.emit(node);
  }

  setSelectedItem(item: MDMItem) {
      this.nodeService.getNodeFromItem(item)
        .subscribe(
          node => this.setSelectedNode(node),
          error => this.notificationService.notifyError(this.translateService.instant('navigator.navigator.err-cannot-set-item'), error)
        );
  }

  getSelectedNode(): Node {
    return this.selectedNode;
  }

  fireOnOpenInTree(items: MDMItem[]) {
    this.onOpenInTree.emit(items);
  }
}