/*!
 * @license
 * Copyright 2019 Alfresco Software, Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { NodesApiService } from '@alfresco/adf-core';
import { Injectable } from '@angular/core';
import { Observable } from 'rxjs';
import { TreeBaseNode } from '../models/tree-view.model';
import { NodePaging, NodeEntry } from '@alfresco/js-api';
import { map } from 'rxjs/operators';

@Injectable({
    providedIn: 'root'
})
export class TreeViewService {

    constructor(private nodeApi: NodesApiService) {
    }

    getTreeNodes(nodeId): Observable<TreeBaseNode[]> {
        return this.nodeApi.getNodeChildren(nodeId)
            .pipe(
                map((nodePage: NodePaging) => {
                    return nodePage.list.entries.filter((node) => node.entry.isFolder ? node : null);
                }),
                map((nodes: NodeEntry[]) => nodes.map((node) => new TreeBaseNode(node)))
            );
    }

}