const BUILD_PATH = 'ui/assets/build';
const MAIN_SCSS_PATH = 'ui/assets/css/admin.scss';

const MODULES_PATH = '../../../node_modules';
const compressor = require(`${MODULES_PATH}/node-minify`);
const sass = require(`${MODULES_PATH}/node-sass`);
const fs = require('fs');
const path = require('path');

/**
 * Functions
 */

/**
 * Convert each line of text file into item array
 *
 * @param listFileName
 * @returns {string[]}
 */
function LoadListIntoArray(listFileName) {
	// Split every line into array
	let listTemp = fs.readFileSync(listFileName).toString().split("\n");

	// Clean array:
	let listRet = listTemp.filter((x) => {
		// remove all comments start with ';' and empty lines ('\r')
		return x.replace(/^;.*/, '').replace('\r', '').length > 0
	}).map((d) => {
		return d.replace('\r', '')
	});

	return listRet;
}

/**
 * MAIN
 */

if (!fs.existsSync(BUILD_PATH)) {
	console.log(`Create folder ${BUILD_PATH}`);
	fs.mkdirSync(BUILD_PATH);
}

let libList = LoadListIntoArray('build.js.list');
let cssList = LoadListIntoArray('build.css.list');

/**
 * CSS
 */

// Compile SCSS
console.log('Compiling SCSS');
let buffer = sass.renderSync({file: MAIN_SCSS_PATH});
// Write to file CSS
fs.writeFileSync(`${BUILD_PATH}/admin.min.css`, buffer.css);

//Concatenate all CSS in one MIN.CSS file
console.log('Bundle CSS');
compressor.minify({
		compressor: 'clean-css',
		input: cssList,
		output: `${BUILD_PATH}/bundle.min.css`
	}
);

/**
 * JS
 */

// Minify+Concatenate JS files it in one file
console.log('Bundle JS');
compressor.minify({
		compressor: 'terser',
		input: libList,
		output: `${BUILD_PATH}/bundle.min.js`
	}
);

fs.unlinkSync(`${BUILD_PATH}/admin.min.css`);

console.log('All done.');