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

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

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

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

'use strict';

import * as net from 'net';

import { workspace, Disposable, ExtensionContext } from 'vscode';

import { LanguageClient, LanguageClientOptions, SettingMonitor, ServerOptions, ErrorAction, ErrorHandler, CloseAction, TransportKind } from 'vscode-languageclient';

function startLangServer(command: string, args: string[], documentSelector: string[]): Disposable {

const serverOptions: ServerOptions = {

command,

args,

};

const clientOptions: LanguageClientOptions = {

documentSelector: documentSelector,

synchronize: {

configurationSection: "pyls"

}

}

return new LanguageClient(command, serverOptions, clientOptions).start();

}

function startLangServerTCP(addr: number, documentSelector: string[]): Disposable {

const serverOptions: ServerOptions = function() {

return new Promise((resolve, reject) => {

var client = new net.Socket();

client.connect(addr, "127.0.0.1", function() {

resolve({

reader: client,

writer: client

});

});

});

}

const clientOptions: LanguageClientOptions = {

documentSelector: documentSelector,

}

return new LanguageClient(`tcp lang server (port ${addr})`, serverOptions, clientOptions).start();

}

export function activate(context: ExtensionContext) {

const executable = workspace.getConfiguration("pyls").get<string>("executable");

context.subscriptions.push(startLangServer(executable, ["-vv"], ["python"]));

// For TCP server needs to be started seperately

// context.subscriptions.push(startLangServerTCP(2087, ["python"]));

}