enigma-bbs/core/theme.js

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JavaScript
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/* jslint node: true */
'use strict';
var Config = require('./config.js').config;
var art = require('./art.js');
var ansi = require('./ansi_term.js');
var miscUtil = require('./misc_util.js');
var Log = require('./logger.js').log;
var configCache = require('./config_cache.js');
var asset = require('./asset.js');
var ViewController = require('./view_controller.js').ViewController;
var fs = require('fs');
var paths = require('path');
var async = require('async');
var _ = require('lodash');
var assert = require('assert');
exports.loadTheme = loadTheme;
exports.getThemeArt = getThemeArt;
exports.getAvailableThemes = getAvailableThemes;
exports.getRandomTheme = getRandomTheme;
exports.initAvailableThemes = initAvailableThemes;
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exports.displayThemeArt = displayThemeArt;
exports.displayThemedPause = displayThemedPause;
exports.displayThemedAsset = displayThemedAsset;
function refreshThemeHelpers(theme) {
//
// Create some handy helpers
//
theme.helpers = {
getPasswordChar : function() {
var pwChar = Config.defaults.passwordChar;
if(_.has(theme, 'customization.defaults.general')) {
var themePasswordChar = theme.customization.defaults.general.passwordChar;
if(_.isString(themePasswordChar)) {
pwChar = themePasswordChar.substr(0, 1);
} else if(_.isNumber(themePasswordChar)) {
pwChar = String.fromCharCode(themePasswordChar);
}
}
return pwChar;
},
getDateFormat : function(style) {
style = style || 'short';
var format = Config.defaults.dateFormat[style] || 'MM/DD/YYYY';
if(_.has(theme, 'customization.defaults.dateFormat')) {
return theme.customization.defaults.dateFormat[style] || format;
}
return format;
},
getTimeFormat : function(style) {
style = style || 'short';
var format = Config.defaults.timeFormat[style] || 'h:mm a';
if(_.has(theme, 'customization.defaults.timeFormat')) {
return theme.customization.defaults.timeFormat[style] || format;
}
return format;
},
getDateTimeFormat : function(style) {
style = style || 'short';
var format = Config.defaults.dateTimeFormat[style] || 'MM/DD/YYYY h:mm a';
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if(_.has(theme, 'customization.defaults.dateTimeFormat')) {
return theme.customization.defaults.dateTimeFormat[style] || format;
}
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return format;
}
};
}
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function loadTheme(themeID, cb) {
var path = paths.join(Config.paths.themes, themeID, 'theme.hjson');
configCache.getConfigWithOptions( { filePath : path, forceReCache : true }, function loaded(err, theme) {
if(err) {
cb(err);
} else {
if(!_.isObject(theme.info) ||
!_.isString(theme.info.name) ||
!_.isString(theme.info.author))
{
cb(new Error('Invalid or missing "info" section!'));
return;
}
refreshThemeHelpers(theme);
cb(null, theme, path);
}
});
}
var availableThemes = {};
function initAvailableThemes(cb) {
async.waterfall(
[
function getDir(callback) {
fs.readdir(Config.paths.themes, function onReadDir(err, files) {
callback(err, files);
});
},
function filterFiles(files, callback) {
var filtered = files.filter(function onFilter(file) {
return fs.statSync(paths.join(Config.paths.themes, file)).isDirectory();
});
callback(null, filtered);
},
function populateAvailable(filtered, callback) {
filtered.forEach(function onTheme(themeId) {
loadTheme(themeId, function themeLoaded(err, theme, themePath) {
if(!err) {
availableThemes[themeId] = theme;
configCache.on('recached', function recached(path) {
if(themePath === path) {
loadTheme(themeId, function reloaded(err, reloadedTheme) {
Log.debug( { info : theme.info }, 'Theme recached' );
availableThemes[themeId] = reloadedTheme;
});
}
});
Log.debug( { info : theme.info }, 'Theme loaded');
} else {
Log.warn( { themeId : themeId, error : err.toString() }, 'Failed to load theme');
}
});
});
callback(null);
}
],
function onComplete(err) {
if(err) {
cb(err);
return;
}
cb(null, availableThemes.length);
}
);
}
function getAvailableThemes() {
return availableThemes;
}
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function getRandomTheme() {
if(Object.getOwnPropertyNames(availableThemes).length > 0) {
var themeIds = Object.keys(availableThemes);
return themeIds[Math.floor(Math.random() * themeIds.length)];
}
}
function getThemeArt(options, cb) {
//
// options - required:
// name
// client
//
// options - optional
// themeId
// asAnsi
// readSauce
// random
//
if(!options.themeId && _.has(options.client, 'user.properties.theme_id')) {
options.themeId = options.client.user.properties.theme_id;
} else {
options.themeId = Config.defaults.theme;
}
// :TODO: replace asAnsi stuff with something like retrieveAs = 'ansi' | 'pipe' | ...
// :TODO: Some of these options should only be set if not provided!
options.asAnsi = true; // always convert to ANSI
options.readSauce = true; // read SAUCE, if avail
options.random = _.isBoolean(options.random) ? options.random : true; // FILENAME<n>.EXT support
//
// We look for themed art in the following manor:
// * Supplied theme via |themeId|
// * Fallback 1: Default theme (if different than |themeId|)
// * General art directory
//
async.waterfall(
[
function fromSuppliedTheme(callback) {
options.basePath = paths.join(Config.paths.themes, options.themeId);
art.getArt(options.name, options, function artLoaded(err, artInfo) {
callback(null, artInfo);
});
},
function fromDefaultTheme(artInfo, callback) {
if(artInfo || Config.defaults.theme === options.themeId) {
callback(null, artInfo);
} else {
options.basePath = paths.join(Config.paths.themes, Config.defaults.theme);
art.getArt(options.name, options, function artLoaded(err, artInfo) {
callback(null, artInfo);
});
}
},
function fromGeneralArtDir(artInfo, callback) {
if(artInfo) {
callback(null, artInfo);
} else {
options.basePath = Config.paths.art;
art.getArt(options.name, options, function artLoaded(err, artInfo) {
callback(err, artInfo);
});
}
}
],
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function complete(err, artInfo) {
if(err) {
options.client.log.debug( { error : err }, 'Cannot find art');
}
cb(err, artInfo);
}
);
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}
function displayThemeArt(options, cb) {
assert(_.isObject(options));
assert(_.isObject(options.client));
assert(_.isString(options.name));
getThemeArt(options, function themeArt(err, artInfo) {
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if(err) {
cb(err);
} else {
// :TODO: just use simple merge of options -> displayOptions
var dispOptions = {
art : artInfo.data,
sauce : artInfo.sauce,
client : options.client,
font : options.font,
trailingLF : options.trailingLF,
};
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art.display(dispOptions, function displayed(err, mciMap, extraInfo) {
cb(err, { mciMap : mciMap, artInfo : artInfo, extraInfo : extraInfo } );
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});
}
});
}
//
// Pause prompts are a special prompt by the name 'pause'.
//
function displayThemedPause(options, cb) {
//
// options.client
// options clearPrompt
//
assert(_.isObject(options.client));
if(!_.isBoolean(options.clearPrompt)) {
options.clearPrompt = true;
}
// :TODO: Support animated pause prompts. Probably via MCI with AnimatedView
var artInfo;
var vc;
var promptConfig;
async.series(
[
function loadPromptJSON(callback) {
configCache.getModConfig('prompt.hjson', function loaded(err, promptJson) {
if(err) {
callback(err);
} else {
if(_.has(promptJson, [ 'prompts', 'pause' ] )) {
promptConfig = promptJson.prompts.pause;
callback(_.isObject(promptConfig) ? null : new Error('Invalid prompt config block!'));
} else {
callback(new Error('Missing standard \'pause\' prompt'));
}
}
});
},
function displayPausePrompt(callback) {
//
// Override .font so it doesn't change from current setting
//
var dispOptions = promptConfig.options;
dispOptions.font = 'not_really_a_font!';
displayThemedAsset(
promptConfig.art,
options.client,
dispOptions,
function displayed(err, artData) {
artInfo = artData;
callback(err);
}
);
},
function discoverCursorPosition(callback) {
options.client.once('cursor position report', function cpr(pos) {
artInfo.startRow = pos[0] - artInfo.height;
callback(null);
});
options.client.term.rawWrite(ansi.queryPos());
},
function createMCIViews(callback) {
vc = new ViewController( { client : options.client, noInput : true } );
vc.loadFromPromptConfig( { promptName : 'pause', mciMap : artInfo.mciMap, config : promptConfig }, function loaded(err) {
callback(null);
});
},
function pauseForUserInput(callback) {
options.client.waitForKeyPress(function keyPressed() {
callback(null);
});
},
function clearPauseArt(callback) {
if(options.clearPrompt) {
if(artInfo.startRow) {
options.client.term.rawWrite(ansi.goto(artInfo.startRow, 1));
options.client.term.rawWrite(ansi.deleteLine(artInfo.height));
} else {
options.client.term.rawWrite(ansi.up(1) + ansi.deleteLine());
}
}
callback(null);
}
/*
, function debugPause(callback) {
setTimeout(function to() {
callback(null);
}, 4000);
}
*/
],
function complete(err) {
if(err) {
Log.error(err);
}
if(vc) {
vc.detachClientEvents();
}
cb();
}
);
}
function displayThemedAsset(assetSpec, client, options, cb) {
assert(_.isObject(client));
// options are... optional
if(3 === arguments.length) {
cb = options;
options = {};
}
var artAsset = asset.getArtAsset(assetSpec);
if(!artAsset) {
cb(new Error('Asset not found: ' + assetSpec));
return;
}
// :TODO: just use simple merge of options -> displayOptions
var dispOpts = {
name : artAsset.asset,
client : client,
font : options.font,
trailingLF : options.trailingLF,
};
switch(artAsset.type) {
case 'art' :
displayThemeArt(dispOpts, function displayed(err, artData) {
cb(err, err ? null : { mciMap : artData.mciMap, height : artData.extraInfo.height } );
});
break;
case 'method' :
// :TODO: fetch & render via method
break;
case 'inline ' :
// :TODO: think about this more in relation to themes, etc. How can this come
// from a theme (with override from menu.json) ???
// look @ client.currentTheme.inlineArt[name] -> menu/prompt[name]
break;
default :
cb(new Error('Unsupported art asset type: ' + artAsset.type));
break;
}
}