111 lines
2.6 KiB
JavaScript
111 lines
2.6 KiB
JavaScript
/* jslint node: true */
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'use strict';
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var Config = require('./config.js').config;
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var art = require('./art.js');
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var miscUtil = require('./misc_util.js');
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var fs = require('fs');
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var paths = require('path');
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var async = require('async');
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exports.getThemeInfo = getThemeInfo;
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exports.getThemeArt = getThemeArt;
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exports.getRandomTheme = getRandomTheme;
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exports.initAvailableThemes = initAvailableThemes;
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function getThemeInfo(themeID, cb) {
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var path = paths.join(Config.paths.themes, themeID, 'theme_info.json');
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fs.readFile(path, function onData(err, data) {
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if(err) {
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cb(err);
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} else {
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try {
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var info = JSON.parse(data);
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cb(null, info);
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} catch(e) {
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cb(err);
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}
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}
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});
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}
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var availableThemes = {};
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function initAvailableThemes(cb) {
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async.waterfall(
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[
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function getDir(callback) {
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fs.readdir(Config.paths.themes, function onReadDir(err, files) {
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callback(err, files);
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});
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},
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function filterFiles(files, callback) {
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var filtered = files.filter(function onFilter(file) {
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return fs.statSync(paths.join(Config.paths.themes, file)).isDirectory();
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});
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callback(null, filtered);
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},
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function populateAvailable(filtered, callback) {
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filtered.forEach(function onTheme(themeId) {
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getThemeInfo(themeId, function onThemeInfo(err, info) {
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if(!err) {
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if(!availableThemes) {
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availableThemes = {};
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}
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availableThemes[themeId] = info;
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}
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});
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});
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callback(null);
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}
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],
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function onComplete(err) {
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if(err) {
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cb(err);
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return;
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}
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cb(null, availableThemes.length);
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}
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);
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}
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function getRandomTheme(cb) {
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if(availableThemes.length > 0) {
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var themeIds = Object.keys(availableThemes);
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cb(null, themeIds[Math.floor(Math.random() * themeIds.length)]);
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} else {
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cb(new Error('No themes available'));
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}
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}
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function getThemeArt(name, themeID, options, cb) {
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// allow options to be optional
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if(typeof cb === 'undefined') {
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cb = options;
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options = {};
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}
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// set/override some options
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options.asAnsi = true;
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options.readSauce = true; // can help with encoding
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options.random = miscUtil.valueWithDefault(options.random, true);
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options.basePath = paths.join(Config.paths.themes, themeID);
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art.getArt(name, options, function onThemeArt(err, theArt) {
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if(err) {
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// try fallback of art directory
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options.basePath = Config.paths.art;
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art.getArt(name, options, function onFallbackArt(err, theArt) {
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if(err) {
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cb(err);
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} else {
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cb(null, theArt.data);
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}
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});
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} else {
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cb(null, theArt.data);
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}
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});
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} |