111 lines
3.1 KiB
JavaScript
111 lines
3.1 KiB
JavaScript
/* jslint node: true */
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'use strict';
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// ENiGMA½
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const Config = require('./config.js').get;
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// deps
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const fs = require('graceful-fs');
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const paths = require('path');
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const _ = require('lodash');
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const assert = require('assert');
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const async = require('async');
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// exports
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exports.loadModuleEx = loadModuleEx;
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exports.loadModule = loadModule;
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exports.loadModulesForCategory = loadModulesForCategory;
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exports.getModulePaths = getModulePaths;
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function loadModuleEx(options, cb) {
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assert(_.isObject(options));
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assert(_.isString(options.name));
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assert(_.isString(options.path));
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const modConfig = _.isObject(Config[options.category]) ? Config[options.category][options.name] : null;
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if(_.isObject(modConfig) && false === modConfig.enabled) {
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const err = new Error(`Module "${options.name}" is disabled`);
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err.code = 'EENIGMODDISABLED';
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return cb(err);
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}
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//
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// Modules are allowed to live in /path/to/<moduleName>/<moduleName>.js or
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// simply in /path/to/<moduleName>.js. This allows for more advanced modules
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// to have their own containing folder, package.json & dependencies, etc.
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//
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let mod;
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let modPath = paths.join(options.path, `${options.name}.js`); // general case first
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try {
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mod = require(modPath);
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} catch(e) {
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if('MODULE_NOT_FOUND' === e.code) {
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modPath = paths.join(options.path, options.name, `${options.name}.js`);
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try {
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mod = require(modPath);
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} catch(e) {
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return cb(e);
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}
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} else {
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return cb(e);
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}
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}
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if(!_.isObject(mod.moduleInfo)) {
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return cb(new Error('Module is missing "moduleInfo" section'));
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}
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if(!_.isFunction(mod.getModule)) {
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return cb(new Error('Invalid or missing "getModule" method for module!'));
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}
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return cb(null, mod);
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}
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function loadModule(name, category, cb) {
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const path = Config().paths[category];
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if(!_.isString(path)) {
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return cb(new Error(`Not sure where to look for "${name}" of category "${category}"`));
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}
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loadModuleEx( { name : name, path : path, category : category }, function loaded(err, mod) {
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return cb(err, mod);
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});
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}
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function loadModulesForCategory(category, iterator, complete) {
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fs.readdir(Config().paths[category], (err, files) => {
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if(err) {
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return iterator(err);
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}
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const jsModules = files.filter(file => {
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return '.js' === paths.extname(file);
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});
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async.each(jsModules, (file, next) => {
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loadModule(paths.basename(file, '.js'), category, (err, mod) => {
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iterator(err, mod);
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return next();
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});
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}, err => {
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if(complete) {
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return complete(err);
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}
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});
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});
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}
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function getModulePaths() {
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const config = Config();
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return [
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config.paths.mods,
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config.paths.loginServers,
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config.paths.contentServers,
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config.paths.scannerTossers,
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];
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}
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