/**
 * Copyright (c) Microsoft Corporation
 * All rights reserved.
 *
 * MIT License
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
 * to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

'use strict';

import * as rx from 'rx';
import * as component from '../common/component';

@component.Singleton
class ObservableTimer {
    private observableSource: rx.Observable<number>;
    constructor() {
        // TODO: move 100 and 1000 into constants class
        this.observableSource = rx.Observable.timer(100, 1000).takeWhile(() => true);
    }

    public subscribe(onNext?: (value: any) => void, onError?: (exception: any) => void, onCompleted?: () => void): Rx.IDisposable {
        return this.observableSource.subscribe(onNext, onError, onCompleted);
    }

    public unsubscribe( subscription : Rx.IDisposable) {
        if(typeof subscription !== undefined) {
            subscription.dispose();
        }
    }
}

export { ObservableTimer };
