create-express/app.js at master · frabaglia/create-express · GitHub

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#!/usr/bin/env node

/* Only working on macOS, how could i handle it on Windows and Linux ? */
var ncp = require('ncp').ncp
var program = require('commander')
var chalk = require('chalk')
var sys = require('util')
var exec = require('child_process').exec
var spinner = require("char-spinner")

program
    .arguments('<serverName>')
    .action(function(serverName) {
        startProcess(serverName)
    })
    .parse(process.argv)


function startProcess(serverName) {
    exec('mkdir ' + serverName + ' && pwd',
        function(error, stdout, stderr) {

            if (typeof error !== 'undefined' && error !== null) {
                return errorHandler(error, undefined)
            } else if (typeof stderr !== 'undefined' && stderr !== null && stderr !== '') {
                return stdErrorHandler(error, undefined)
            }

            var to = stdout.substring(0, stdout.length - 1)

            startCopy(to, serverName)
        })
}

function startCopy(to, serverName) {
    console.log(chalk.bold.green('🐙  express-create is creating a new server template on ' + to + '/' + serverName))
    var interval = spinner()
    var from = ''

    exec('echo $NVM_BIN', function(error, stdout, stderr) {

        from = stdout.substring(0, stdout.length - 1)

        if (typeof error !== 'undefined' && error !== null) {
            return errorHandler(error, interval)
        } else if (typeof stderr !== 'undefined' && stderr !== null && stderr !== '') {
            return stdErrorHandler(error, interval)
        } else {
            return copyFiles(from, to, serverName, interval)
        }
    })
}

function errorHandler(error, interval) {
    console.log('')
    console.error(chalk.bold.red("node exec() error: "))
    console.error(chalk.red(error))
    clearInterval(interval)
}

function stdErrorHandler(error, interval) {
    console.log('')
    console.error(chalk.bold.red("stderr error: "))
    console.error(chalk.red(stderr))
    clearInterval(interval)
}

function ncpError(err, interval) {
    console.log('')
    console.error(chalk.bold.red("ncp error: "))
    console.error(chalk.red(err))
    clearInterval(interval)
}

function copyFiles(from, to, serverName, interval) {

    if (typeof from !== 'undefined' && from !== null && from !== '') {
        console.log('')
        console.log(chalk.bold.cyan('Detecting NVM enviroment on your computer.'))
        console.log(chalk.bold.cyan('Taking the template from the corresponding node modules...'))
        from = from + "/../lib/node_modules/create-express/template/"
    } else {
        console.log('')
        console.log(chalk.bold.cyan('Detecting non NVM enviroment on your computer.'))
        console.log(chalk.bold.cyan('Taking the template from the corresponding node modules...'))
        from = '/usr/local/lib/node_modules/create-express/template/'
            //TODO: This is the only one?
            // Could there be other paths for node_modules in a UNIX enviroment?
            // Is enoghth for Linux users too?
            //from = '/usr/local/node_modules/create-express/template/'
            //from = '/usr/lib/node_modules/create-express/template/'
            //from = '/usr/local/bin/create-express/template/'
    }

    ncp(from, to + '/' + serverName, function(err) {
        if (err) {
            return ncpError(err)
        }
        clearInterval(interval)
        console.log('')
        console.log(chalk.bold.green('Your template is ready! 🍻 '))
        console.log('')
        console.log(chalk.bold.white('Start making some awsome things, to start coding just make:'))
        console.log('')
        console.log(chalk.bold.cyan('cd ' + serverName) + chalk.white(' && ') + chalk.bold.cyan('yarn install') + chalk.white(' && ') + chalk.bold.cyan('npm run dev'))
    })
}