/*!
 * @license
 * Copyright 2016 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 { AlfrescoApiService, LogService } from '@alfresco/adf-core';
import { Injectable } from '@angular/core';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/observable/throw';

@Injectable()
export class DiagramsService {

    constructor(private apiService: AlfrescoApiService,
                private logService: LogService) {
    }

    getProcessDefinitionModel(processDefinitionId: string): Observable<any> {
        return Observable.fromPromise(this.apiService.getInstance().
        activiti.modelJsonBpmnApi.getModelJSON(processDefinitionId)).catch(err => this.handleError(err));
    }

    getRunningProcessDefinitionModel(processInstanceId: string): Observable<any> {
        return Observable.fromPromise(this.apiService.getInstance().
        activiti.modelJsonBpmnApi.getModelJSONForProcessDefinition(processInstanceId)).catch(err => this.handleError(err));
    }

    private handleError(error: any) {
        this.logService.error(error);
        return Observable.throw(error || 'Server error');
    }
}
