main.js

const fs = require('fs');
const path = require('path');
const minify = require('minify');
const wpPot = require('wp-pot');

function minifyFiles(extension) {
    const assetsFiles = findFilesInDir(`./assets/${extension}`, `.${extension}`)
    const isNotMinifiedAndHasSelectedExtension = filePath => filePath.includes(`.${extension}`) && !filePath.includes('.min');
    const filtredFiles = assetsFiles.filter(filePath => isNotMinifiedAndHasSelectedExtension(filePath));

    filtredFiles.forEach(file => {
        const filePath = path.resolve(`${file}`);

        minify(filePath, {js: {ecma: 6}, css: {compatibility: '*'}})
            .then(minifiedContent => {
                const newFilePathName = filePath.split(`.${extension}`)[0].concat(`.min.${extension}`);
                fs.writeFileSync(newFilePathName, minifiedContent);
            })
            .catch(console.error);
    });
}

function generatePotFiles() {
    wpPot({
        destFile: './i18n/languages/woocommerce-mercadopago.pot',
        domain: 'woocommerce-mercadopago',
        lastTranslator: 'MPB Desenvolvimento <mpb_desenvolvimento@mercadopago.com.br>',
        src: ['**/*.php', '**/**/*.php', '**/**/**/*.php']
      });
}

/**
 * Find a file by extension
 *
 * @param startPath
 * @param filter
 * @returns {*[]}
 */
function findFilesInDir(startPath,filter){
	let results = [];

	if (!fs.existsSync(startPath)){
		console.error("no dir ",startPath);
		return [];
	}

	const files=fs.readdirSync(startPath);
	for(let i=0;i<files.length;i++){
		const filename=path.join(startPath,files[i]);
		const stat = fs.lstatSync(filename);
		if (stat.isDirectory()){
			results = results.concat(findFilesInDir(filename,filter)); //recurse
		} else if (filename.indexOf(filter)>=0) {
			results.push(filename);
		}
	}

	return results;
}

module.exports = {minifyFiles, generatePotFiles};