/*---------------------------------------------------------------------------------------------

* Copyright (c) Microsoft Corporation. All rights reserved.

* Licensed under the MIT License. See License.txt in the project root for license information.

*--------------------------------------------------------------------------------------------*/

import { Event, EventEmitter, Uri } from 'vscode';

import { join } from 'path';

import * as fs from 'fs';

import { IDisposable } from './util';

export interface IFileWatcher extends IDisposable {

readonly event: Event<Uri>;

}

export function watch(location: string): IFileWatcher {

const dotGitWatcher = fs.watch(location);

const onDotGitFileChangeEmitter = new EventEmitter<Uri>();

dotGitWatcher.on('change', (_, e) => onDotGitFileChangeEmitter.fire(Uri.file(join(location, e as string))));

dotGitWatcher.on('error', err => console.error(err));

return new class implements IFileWatcher {

event = onDotGitFileChangeEmitter.event;

dispose() { dotGitWatcher.close(); }

};

}