cncjs-pendant-boilerplate

#!/usr/bin/env node

var program = require('commander');
var serialport = require('serialport');
var inquirer = require('inquirer');
var vorpal = require('vorpal')();
var pkg = require('../package.json');
var serverMain = require('../index');
var options = {};

program
	.version(pkg.version)
	.usage('-s <secret> -p <port> [options]')
	.option('-l, --list', 'list available ports then exit')
    .option('-s, --secret', 'the secret key stored in the ~/.cncrc file')
	.option('-p, --port <port>', 'path or name of serial port')
	.option('-b, --baudrate <baudrate>', 'baud rate (default: 115200)', 115200)
	.option('--socket-address <address>', 'socket address or hostname (default: localhost)', 'localhost')
	.option('--socket-port <port>', 'socket port (default: 8000)', 8000)
	.option('--controller-type <type>', 'controller type: Grbl|Smoothie|TinyG (default: Grbl)', 'Grbl')
    .option('--access-token-lifetime <lifetime>', 'access token lifetime in seconds or a time span string (default: 30d)', '30d')

program.parse(process.argv);

var options = {
    secret: program.secret,
    port: program.port,
    baudrate: program.baudrate,
    socketAddress: program.socketAddress,
    socketPort: program.socketPort,
    controllerType: program.controllerType,
    accessTokenLifetime: program.accessTokenLifetime
};

if (options.list) {
	serialport.list(function(err, ports) {
		if (err) {
			console.error(err);
			process.exit(1);
		}
		ports.forEach(function(port) {
			console.log(port.comName);
		});
	});
	return;
}

var createServer = function(options) {
    serverMain(options, function(err, socket) {
        vorpal
            .mode('command')
            .description('Enters the command-line mode.')
            .delimiter(options.controllerType + '>')
            .init(function(args, callback) {
                this.log('You can now directly enter commands. To exit, type `exit`.');
                callback();
            })
            .action(function(command, callback) {
                var line = command + '\n';
                socket.emit('write', options.port, line);
                callback();
            });

        console.log('');
        console.log('Type "help" to display supported options:');

        vorpal
            .delimiter('pendant$')
            .show();
    });
};

if (options.port) {
    createServer(options);
    return;
}

serialport.list(function(err, ports) {
    if (err) {
        console.error(err);
        process.exit(1);
    }
    const choices = ports.map(function(port) {
        return port.comName;
    });

    inquirer.prompt([{
        type: 'list',
        name: 'port',
        message: 'Specify which port you want to use?',
        choices: choices
    }]).then(function(answers) {
        options.port = answers.port;

        createServer(options);
    });
});