src/app/core/services/version-reader.ts

/*
 * Copyright 2017-present Open Networking Foundation

 * 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 IPromise = angular.IPromise;

export interface IXosVersionReaderService {
  getVersion(): IPromise<string>;
}

interface ICORDVersion {
    data: {
        version: string;
    };
}

export class XosVersionReaderService implements IXosVersionReaderService {

    static $inject = ['$http', '$q', '$log'];

    constructor(
    private $http: angular.IHttpService,
    private $q: angular.IQService,
    private $log: angular.ILogService
    ) {
    }

    public getVersion(): IPromise<string> {
        const d = this.$q.defer();
        this.$http.get(`/version.json`)
          .then((res: ICORDVersion) => {
            d.resolve(res.data.version);
          })
          .catch(e => {
            this.$log.warn(`[XosVersionReaderService] Cannot read version`, e);
            d.resolve('unknown');
          });
        return d.promise;
      }

}