#!/usr/bin/env node

// This file is part of the Studyplan plugin for Moodle
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <https://www.gnu.org/licenses/>.
/**
 * This file compiles the scss files in the scss/ folder into either the main 
 * styles.css for production upon build or css/devstyles.css for development
 * 
 * Most nice would be to integrate this action with grunt watch, but I am
 * not familiar enough with grunt to know if I can extend moodle's grunt actions
 * from a Gruntfile.js in this directory without modifying Moodle's Gruntfile.js
 *
 * @package    local_treestudyplan
 * @copyright  2023 P.M. Kuipers
 * @license    https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

const sass = require('sass');
const path = require('path');
const fs = require('fs');

const output = 'css/devstyles.css';

let css = "";
let map = "";
//joining path of directory 
const directoryPath = path.join(__dirname, 'scss');
//passsing directoryPath and callback function
fs.readdir(directoryPath, function (err, files) {
    //handling error
    if (err) {
        return console.log('Unable to scan directory: ' + err);
    } 
    //listing all files using forEach
    files.forEach(function (file) {
        const result = sass.compile(file);
        console.info(`Processing ${file}...`)
        if ( result ) {
          css = css + `/**** ${file} ****/\n` + result.css + "\n";
        }
    });

    console.info(`Storing ${output}`);
    fs.writeFile(path.join(__dirname, output),css,(err) => {
      if (err) throw err;
    });

});