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#!/usr/bin/env node
// Copyright (C) 2016 basysKom GmbH, author Sumedha Widyadharma <sumedha.widyadharma@basyskom.com>
// Copyright (C) 2016 basysKom GmbH, author Lutz Schönemann <lutz.schoenemann@basyskom.com>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
'use strict';
var repl = require('repl');
var WebSocket = require('faye-websocket').Client;
var QWebChannel = new require('./qwebchannel.js').QWebChannel;
var serverAddress = 'ws://localhost:12345';
var channels = [];
var autoConnect = process.argv.pop();
if (autoConnect === __filename) {
autoConnect = false;
}
var openChannel = function(address) {
// this should be bound to the repl
var self = this;
address = address ? address : serverAddress;
if (address.indexOf('://') === -1) {
address = 'ws://' + address;
}
var ws = new WebSocket(address);
ws.on('open', function(event) {
var transport = {
onmessage: function(data) {},
send: function(data) {
ws.send(data, {
binary: false
});
}
};
ws.on('message', function(event) {
transport.onmessage(event);
}); // onmessage
var webChannel = new QWebChannel(transport, function(channel) {
channels.push(channel);
var channelIdx = (channels.length - 1);
console.log('channel opened', channelIdx);
// Create a nice alias to access this channels objects
self.context['c' + channelIdx] = channel.objects;
ws.on('close', function() {
for (var i = 0; i < channels.length; ++i) {
if (channels[i] === channel) {
console.log('channel closed', i);
channels[i] = null;
return;
}
}
}); // onclose
}); // new QWebChannel
}); // onopen
ws.on('error', function(error) {
console.log('websocket error', error.message);
});
}; // openChannel
var setupRepl = function() {
var r = repl.start({
prompt: "webchannel> ",
input: process.stdin,
output: process.stdout,
ignoreUndefined: true
});
r.context.serverAddress = serverAddress;
r.context.openChannel = openChannel.bind(r);
r.context.channels = channels;
r.context.lsObjects = function() {
for (let i = 0; i < channels.length; ++i) {
const channel = channels[i];
if (!channel) // closed and removed channel in repl
continue;
console.log('-- Channel "c' + i + '" objects:');
for (const obj of Object.keys(channel.objects))
console.log(obj, ':', channel.objects[obj]);
}
}
return r;
}
var welcome = function() {
console.log('Welcome to the qwebchannel/websocket REPL.');
console.log('Use openChannel(url) to connect to a service.');
console.log('For the standalone example, just openChannel() should suffice.');
console.log('Opened channels have their objects aliased to c<channel number>, i.e. c0');
console.log('So for the standalone example try: c0.core.receiveText(\'hello world\')');
}
welcome();
var repl = setupRepl();
if (autoConnect) {
repl.context.openChannel(autoConnect);
}
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