generator.js

#! /usr/bin/env node

const path = require('path');
const { execSync } = require('child_process');
const fs = require('fs-extra');
const git = require('simple-git');
const { program } = require('commander');

const appTitle = process.argv[2] || 'tram-one-app';

program
	.option('--no-commit', 'skips making an initial git commit')
	.option('--no-install', 'skips installing node dependencies')
	.option('--url [url]', 'public url used for deployments (defaults to project name)', appTitle)
	.parse();

const options = program.opts();

const processFile = (file, currentPath) => {
	const filePath = path.join(currentPath, file);
	const newFilePath = filePath.replace(path.join(__dirname, 'template'), path.join(process.cwd(), appTitle));

	// copy a directory
	if (fs.existsSync(filePath) && fs.statSync(filePath).isDirectory()) {
		// make the directory
		if (fs.existsSync(newFilePath)) {
			console.warn(`Folder ${newFilePath} already exists`);
		} else {
			fs.mkdirSync(newFilePath);
		}

		// process all the files in the directory
		const files = fs.readdirSync(filePath);
		files.forEach((file) => processFile(file, filePath));
		return;
	}

	// copy a file
	if (fs.existsSync(newFilePath)) {
		console.warn(`File ${newFilePath} already exists`);
	} else {
		const newFile = fs.readFileSync(filePath);
		if (filePath.match(/.*\.(png|ttf)/)) {
			fs.appendFileSync(newFilePath, newFile);
		} else if (filePath.match(/gitignore/)) {
			// the gitignore file becomes an npmignore and we need to
			// change it back when laying down the project
			const gitignorePath = newFilePath.toString().replace('gitignore', '.gitignore');
			fs.appendFileSync(gitignorePath, newFile);
		} else if (filePath.match(/template-lock.json/)) {
			// the package-lock.json file is ignored and we need to
			// change it back when laying down the project
			const packageLockPath = newFilePath.toString().replace('template-lock.json', 'package-lock.json');
			fs.appendFileSync(packageLockPath, newFile);
		} else {
			// if it's not a binary file, treat it as a template
			const templateFile = newFile
				.toString()
				.replace(/%TITLE%/g, appTitle)
				.replace(/%URL%/g, options.url);
			fs.appendFileSync(newFilePath, templateFile);
		}
	}
};

const init = async () => {
	const filePath = path.join(__dirname, 'template');
	const projectPath = path.join(process.cwd(), appTitle);

	// laying down the project files
	console.log(`Creating ${projectPath} `);
	console.log('Copying over project files');
	if (options.url !== appTitle) {
		console.log(`Found unique public url, using ${options.url}`);
	}
	processFile('', filePath);

	// making an initial commit for git
	if (options.commit) {
		console.log('Initializing a git repository');

		try {
			const simplegit = git(projectPath);
			console.log('Making the initial commit');
			await simplegit.init();
			await simplegit.add('.');
			await simplegit.commit('Initial commit from Tram-One Express');
			console.log('Successfully created commit');
		} catch (error) {
			console.log('Failed to create commit');
		}
	} else {
		console.log('Skipping making an initial commit');
	}

	// installing node dependencies
	if (options.install) {
		console.log('Installing NPM Depenedencies');
		execSync('npm ci', { cwd: projectPath, stdio: 'inherit' });
	} else {
		console.log('Skipping installing NPM depenedencies, run `npm ci` to get all dependencies required');
	}

	console.log('');
	console.log('Finished!');
	console.log(`Navigate to '${appTitle}', and run 'npm start' to get started!`);
};

init();