'use strict';
const chalk = require('chalk');
const fs = require('fs');
const path = require('path');
class Rules {
/**
* Constructor
*/
constructor() {
this.rules = {};
}
/**
* Loads rules
* @return {Object} Set of rules
*/
load() {
const rulesDirectory = path.join(__dirname, 'rules');
try {
fs.readdirSync(rulesDirectory).forEach((file) => {
const beginIndex = 0;
const endIndex = -3;
const ruleId = file.slice(beginIndex, endIndex);
const ruleModule = path.join(rulesDirectory, file);
this._registerRule(ruleId, ruleModule);
});
return this.rules;
} catch (err) {
console.log(`Error - ${err}`);
return false;
}
}
/**
* Loads a rule
* @param {String} ruleId Name of the rule
* @return {Object} Rule
*/
get(ruleId) {
const rule = this.rules[ruleId];
if (typeof rule === 'undefined') {
const errorMsg = `Rule, ${ruleId}, is invalid. Please ensure it matches a valid option.`;
throw new Error(chalk.bold.red(errorMsg));
}
return require(this.rules[ruleId]);
}
/**
* Registers a rule in the rules object
* @param {String} ruleId Name of the rule
* @param {String} ruleModule Path to rule
* @return {undefined} No return
*/
_registerRule(ruleId, ruleModule) {
this.rules[ruleId] = ruleModule;
}
}
module.exports = Rules;
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