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'use strict';
const Fs = require('fs');
const Path = require('path');
/**
* Module containing utility functions
*
* @name Util
* @type Object
*/
const Util = {
/**
* Parses a 16 bit number buffer
*
* @function parse16BitBuffer
* @memberof Util
* @param {Array<String>} buffer the buffer to parse
* @return {Number} the parsed value
*/
parse16BitBuffer(buffer) {
return buffer[0] * 256 + buffer[1];
},
/**
* Picks a random element from an array
*
* @function pickRandom
* @memberof Util
* @param {Array} array the array to use
* @return {Any} the picked element
*/
pickRandom(array) {
return array[Math.floor(Math.random() * array.length)];
},
/**
* For a gi ven path, requires all of the files and returns an array
* with the results. If the directory contains any non-requireable
* files, it will fail.
*
* @function loadFiles
* @memberof Util
* @param {String} path the path where the files are located
* @return {Array} the array of all the loaded modules
*/
loadFiles(path) {
return new Promise((resolve, reject) => {
Fs.readdir(path, (err, files) => {
if (err) {
return reject(err);
}
const loadedFiles = [];
for (const file of files) {
const filePath = Path.join(path, file);
let loadedFile;
try {
loadedFile = require(filePath);
}
catch (err) {
return reject(err);
}
loadedFiles.push(loadedFile);
}
resolve(loadedFiles);
});
});
}
};
module.exports = Util;
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