gridtastic-override.ts

import fs from 'fs';
import chalk from 'chalk';
import {log} from 'console';
import isGridsomeProject from './isGridsomeProject';
import pkgDir from 'pkg-dir';
import arg from 'arg';

export default async (argv: string[]): Promise<void> => {
	const args = arg({
		'--html': Boolean,
		'--vue': Boolean,
		'--help': Boolean,
		'-h': '--help'
	}, {argv});

	if (args['--help']) {
		console.log(chalk`
    {bold Description}
      Creates overrides for App.vue and/or index.html, with boilerplate code.

    {bold Usage}
      $ gridtastic override --vue --html
    `);
		process.exit(0);
	}

	isGridsomeProject();

	let {
		'--html': html = false,
		'--vue': vue = false
	} = args;

	if (!fs.existsSync('./src')) {
		log(chalk.blue('Creating src directory'));
		fs.mkdirSync('./src');
	}

	if (!(html || vue)) {
		console.log(chalk.yellow('Please pass --html and/or --vue.'));
		process.exit(1);
	}

	const pkgRoot = await pkgDir(__dirname);

	if (html) {
		if (fs.existsSync('./src/index.html')) {
			log(chalk.red('index.html already exists!'));
		} else {
			fs.copyFileSync(`${pkgRoot}/templates/index.html`, './src/index.html');
			log(chalk.green('index.html created successfully.'));
		}
	}

	if (vue) {
		if (fs.existsSync('./src/App.vue')) {
			log(chalk.red('App.vue already exists!'));
		} else {
			fs.copyFileSync(`${pkgRoot}/templates/App.vue`, './src/App.vue');
			log(chalk.green('App.vue created successfully.'));
		}
	}
};