697 lines
25 KiB
JavaScript
697 lines
25 KiB
JavaScript
/* jslint node: true */
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'use strict';
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const Config = require('./config.js').get;
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const art = require('./art.js');
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const ansi = require('./ansi_term.js');
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const Log = require('./logger.js').log;
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const ConfigCache = require('./config_cache.js');
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const getFullConfig = require('./config_util.js').getFullConfig;
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const asset = require('./asset.js');
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const ViewController = require('./view_controller.js').ViewController;
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const Errors = require('./enig_error.js').Errors;
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const ErrorReasons = require('./enig_error.js').ErrorReasons;
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const Events = require('./events.js');
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const fs = require('graceful-fs');
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const paths = require('path');
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const async = require('async');
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const _ = require('lodash');
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const assert = require('assert');
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exports.getThemeArt = getThemeArt;
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exports.getAvailableThemes = getAvailableThemes;
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exports.getRandomTheme = getRandomTheme;
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exports.setClientTheme = setClientTheme;
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exports.initAvailableThemes = initAvailableThemes;
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exports.displayThemeArt = displayThemeArt;
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exports.displayThemedPause = displayThemedPause;
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exports.displayThemedPrompt = displayThemedPrompt;
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exports.displayThemedAsset = displayThemedAsset;
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function refreshThemeHelpers(theme) {
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//
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// Create some handy helpers
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//
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theme.helpers = {
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getPasswordChar : function() {
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let pwChar = _.get(
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theme,
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'customization.defaults.general.passwordChar',
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Config().defaults.passwordChar
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);
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if(_.isString(pwChar)) {
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pwChar = pwChar.substr(0, 1);
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} else if(_.isNumber(pwChar)) {
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pwChar = String.fromCharCode(pwChar);
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}
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return pwChar;
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},
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getDateFormat : function(style = 'short') {
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const format = Config().defaults.dateFormat[style] || 'MM/DD/YYYY';
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return _.get(theme, `customization.defaults.dateFormat.${style}`, format);
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},
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getTimeFormat : function(style = 'short') {
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const format = Config().defaults.timeFormat[style] || 'h:mm a';
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return _.get(theme, `customization.defaults.timeFormat.${style}`, format);
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},
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getDateTimeFormat : function(style = 'short') {
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const format = Config().defaults.dateTimeFormat[style] || 'MM/DD/YYYY h:mm a';
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return _.get(theme, `customization.defaults.dateTimeFormat.${style}`, format);
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}
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};
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}
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function loadTheme(themeId, cb) {
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const path = paths.join(Config().paths.themes, themeId, 'theme.hjson');
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const changed = ( { fileName, fileRoot } ) => {
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const reCachedPath = paths.join(fileRoot, fileName);
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if(reCachedPath === path) {
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reloadTheme(themeId);
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}
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};
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const getOpts = {
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filePath : path,
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forceReCache : true,
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callback : changed,
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};
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ConfigCache.getConfigWithOptions(getOpts, (err, theme) => {
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if(err) {
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return cb(err);
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}
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if(!_.isObject(theme.info) ||
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!_.isString(theme.info.name) ||
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!_.isString(theme.info.author))
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{
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return cb(Errors.Invalid('Invalid or missing "info" section'));
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}
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if(false === _.get(theme, 'info.enabled')) {
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return cb(Errors.General('Theme is not enalbed', ErrorReasons.ErrNotEnabled));
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}
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refreshThemeHelpers(theme);
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return cb(null, theme, path);
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});
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}
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const availableThemes = new Map();
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const IMMUTABLE_MCI_PROPERTIES = [
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'maxLength', 'argName', 'submit', 'validate'
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];
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function getMergedTheme(menuConfig, promptConfig, theme) {
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assert(_.isObject(menuConfig));
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assert(_.isObject(theme));
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// :TODO: merge in defaults (customization.defaults{} )
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// :TODO: apply generic stuff, e.g. "VM" (vs "VM1")
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//
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// Create a *clone* of menuConfig (menu.hjson) then bring in
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// promptConfig (prompt.hjson)
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//
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const mergedTheme = _.cloneDeep(menuConfig);
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if(_.isObject(promptConfig.prompts)) {
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mergedTheme.prompts = _.cloneDeep(promptConfig.prompts);
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}
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//
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// Add in data we won't be altering directly from the theme
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//
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mergedTheme.info = theme.info;
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mergedTheme.helpers = theme.helpers;
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//
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// merge customizer to disallow immutable MCI properties
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//
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const mciCustomizer = function(objVal, srcVal, key) {
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return IMMUTABLE_MCI_PROPERTIES.indexOf(key) > -1 ? objVal : srcVal;
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};
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function getFormKeys(fromObj) {
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return _.remove(_.keys(fromObj), function pred(k) {
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return !isNaN(k); // remove all non-numbers
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});
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}
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function mergeMciProperties(dest, src) {
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Object.keys(src).forEach(function mciEntry(mci) {
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_.mergeWith(dest[mci], src[mci], mciCustomizer);
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});
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}
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function applyThemeMciBlock(dest, src, formKey) {
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if(_.isObject(src.mci)) {
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mergeMciProperties(dest, src.mci);
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} else {
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if(_.has(src, [ formKey, 'mci' ])) {
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mergeMciProperties(dest, src[formKey].mci);
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}
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}
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}
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//
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// menu.hjson can have a couple different structures:
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// 1) Explicit declaration of expected MCI code(s) under 'form:<id>' before a 'mci' block
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// (this allows multiple layout types defined by one menu for example)
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//
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// 2) Non-explicit declaration: 'mci' directly under 'form:<id>'
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//
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// theme.hjson has it's own mix:
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// 1) Explicit: Form ID before 'mci' (generally used where there are > 1 forms)
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//
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// 2) Non-explicit: 'mci' directly under an entry
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//
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// Additionally, #1 or #2 may be under an explicit key of MCI code(s) to match up
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// with menu.hjson in #1.
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//
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// * When theming an explicit menu.hjson entry (1), we will use a matching explicit
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// entry with a matching MCI code(s) key in theme.hjson (e.g. menu="ETVM"/theme="ETVM"
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// and fall back to generic if a match is not found.
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//
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// * If theme.hjson provides form ID's, use them. Otherwise, we'll apply directly assuming
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// there is a generic 'mci' block.
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//
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function applyToForm(form, menuTheme, formKey) {
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if(_.isObject(form.mci)) {
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// non-explicit: no MCI code(s) key assumed since we found 'mci' directly under form ID
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applyThemeMciBlock(form.mci, menuTheme, formKey);
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} else {
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const menuMciCodeKeys = _.remove(_.keys(form), function pred(k) {
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return k === k.toUpperCase(); // remove anything not uppercase
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});
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menuMciCodeKeys.forEach(function mciKeyEntry(mciKey) {
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let applyFrom;
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if(_.has(menuTheme, [ mciKey, 'mci' ])) {
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applyFrom = menuTheme[mciKey];
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} else {
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applyFrom = menuTheme;
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}
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applyThemeMciBlock(form[mciKey].mci, applyFrom, formKey);
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});
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}
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}
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[ 'menus', 'prompts' ].forEach(function areaEntry(sectionName) {
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_.keys(mergedTheme[sectionName]).forEach(function menuEntry(menuName) {
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let createdFormSection = false;
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const mergedThemeMenu = mergedTheme[sectionName][menuName];
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if(_.has(theme, [ 'customization', sectionName, menuName ])) {
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const menuTheme = theme.customization[sectionName][menuName];
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// config block is direct assign/overwrite
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// :TODO: should probably be _.merge()
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if(menuTheme.config) {
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mergedThemeMenu.config = _.assign(mergedThemeMenu.config || {}, menuTheme.config);
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}
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if('menus' === sectionName) {
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if(_.isObject(mergedThemeMenu.form)) {
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getFormKeys(mergedThemeMenu.form).forEach(function formKeyEntry(formKey) {
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applyToForm(mergedThemeMenu.form[formKey], menuTheme, formKey);
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});
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} else {
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if(_.isObject(menuTheme.mci)) {
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//
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// Not specified at menu level means we apply anything from the
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// theme to form.0.mci{}
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//
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mergedThemeMenu.form = { 0 : { mci : { } } };
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mergeMciProperties(mergedThemeMenu.form[0], menuTheme);
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createdFormSection = true;
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}
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}
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} else if('prompts' === sectionName) {
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// no 'form' or form keys for prompts -- direct to mci
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applyToForm(mergedThemeMenu, menuTheme);
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}
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}
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//
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// Finished merging for this menu/prompt
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//
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// If the following conditions are true, set runtime.autoNext to true:
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// * This is a menu
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// * There is/was no explicit 'form' section
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// * There is no 'prompt' specified
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//
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if('menus' === sectionName && !_.isString(mergedThemeMenu.prompt) &&
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(createdFormSection || !_.isObject(mergedThemeMenu.form)))
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{
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mergedThemeMenu.runtime = _.merge(mergedThemeMenu.runtime || {}, { autoNext : true } );
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}
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});
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});
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return mergedTheme;
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}
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function reloadTheme(themeId) {
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const config = Config();
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async.waterfall(
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[
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function loadMenuConfig(callback) {
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getFullConfig(config.general.menuFile, (err, menuConfig) => {
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return callback(err, menuConfig);
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});
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},
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function loadPromptConfig(menuConfig, callback) {
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getFullConfig(config.general.promptFile, (err, promptConfig) => {
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return callback(err, menuConfig, promptConfig);
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});
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},
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function loadIt(menuConfig, promptConfig, callback) {
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loadTheme(themeId, (err, theme) => {
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if(err) {
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if(ErrorReasons.NotEnabled !== err.reasonCode) {
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Log.warn( { themeId : themeId, err : err.message }, 'Failed loading theme');
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return;
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}
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return callback(err);
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}
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Object.assign(theme.info, { themeId } );
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availableThemes.set(themeId, getMergedTheme(menuConfig, promptConfig, theme));
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Events.emit(
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Events.getSystemEvents().ThemeChanged,
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{ themeId }
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);
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return callback(null, theme);
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});
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}
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],
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(err, theme) => {
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if(err) {
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Log.warn( { themeId, error : err.message }, 'Failed to reload theme');
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} else {
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Log.debug( { info : theme.info }, 'Theme recached' );
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}
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}
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);
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}
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function reloadAllThemes()
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{
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async.each([ ...availableThemes.keys() ], themeId => reloadTheme(themeId));
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}
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function initAvailableThemes(cb) {
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const config = Config();
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async.waterfall(
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[
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function loadMenuConfig(callback) {
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getFullConfig(config.general.menuFile, (err, menuConfig) => {
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return callback(err, menuConfig);
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});
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},
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function loadPromptConfig(menuConfig, callback) {
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getFullConfig(config.general.promptFile, (err, promptConfig) => {
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return callback(err, menuConfig, promptConfig);
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});
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},
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function getThemeDirectories(menuConfig, promptConfig, callback) {
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fs.readdir(config.paths.themes, (err, files) => {
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if(err) {
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return callback(err);
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}
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return callback(
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null,
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menuConfig,
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promptConfig,
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files.filter( f => {
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// sync normally not allowed -- initAvailableThemes() is a startup-only method, however
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return fs.statSync(paths.join(config.paths.themes, f)).isDirectory();
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})
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);
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});
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},
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function populateAvailable(menuConfig, promptConfig, themeDirectories, callback) {
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async.each(themeDirectories, (themeId, nextThemeDir) => { // theme dir = theme ID
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loadTheme(themeId, (err, theme) => {
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if(err) {
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if(ErrorReasons.NotEnabled !== err.reasonCode) {
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Log.warn( { themeId : themeId, err : err.message }, 'Failed loading theme');
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}
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return nextThemeDir(null); // try next
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}
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Object.assign(theme.info, { themeId } );
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availableThemes.set(themeId, getMergedTheme(menuConfig, promptConfig, theme));
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return nextThemeDir(null);
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});
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}, err => {
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return callback(err);
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});
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},
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function initEvents(callback) {
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Events.on(Events.getSystemEvents().MenusChanged, () => {
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return reloadAllThemes();
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});
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Events.on(Events.getSystemEvents().PromptsChanged, () => {
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return reloadAllThemes();
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});
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return callback(null);
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}
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],
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err => {
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return cb(err, availableThemes.size);
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}
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);
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}
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function getAvailableThemes() {
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return availableThemes;
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}
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function getRandomTheme() {
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if(availableThemes.size > 0) {
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const themeIds = [ ...availableThemes.keys() ];
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return themeIds[Math.floor(Math.random() * themeIds.length)];
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}
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}
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function setClientTheme(client, themeId) {
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const availThemes = getAvailableThemes();
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let msg;
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let setThemeId;
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const config = Config();
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if(availThemes.has(themeId)) {
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msg = 'Set client theme';
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setThemeId = themeId;
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} else if(availThemes.has(config.defaults.theme)) {
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msg = 'Failed setting theme by supplied ID; Using default';
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setThemeId = config.defaults.theme;
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} else {
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msg = 'Failed setting theme by system default ID; Using the first one we can find';
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setThemeId = availThemes.keys().next().value;
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}
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client.currentTheme = availThemes.get(setThemeId);
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client.log.debug( { setThemeId, requestedThemeId : themeId, info : client.currentTheme.info }, msg);
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}
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function getThemeArt(options, cb) {
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//
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// options - required:
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// name
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//
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// options - optional
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// client - needed for user's theme/etc.
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// themeId
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// asAnsi
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// readSauce
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// random
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//
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const config = Config();
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if(!options.themeId && _.has(options, 'client.user.properties.theme_id')) {
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options.themeId = options.client.user.properties.theme_id;
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} else {
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options.themeId = config.defaults.theme;
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}
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// :TODO: replace asAnsi stuff with something like retrieveAs = 'ansi' | 'pipe' | ...
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// :TODO: Some of these options should only be set if not provided!
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options.asAnsi = true; // always convert to ANSI
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options.readSauce = true; // read SAUCE, if avail
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options.random = _.get(options, 'random', true); // FILENAME<n>.EXT support
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//
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// We look for themed art in the following order:
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// 1) Direct/relative path
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// 2) Via theme supplied by |themeId|
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// 3) Via default theme
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// 4) General art directory
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//
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async.waterfall(
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[
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function fromPath(callback) {
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//
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// We allow relative (to enigma-bbs) or full paths
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//
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if('/' === options.name.charAt(0)) {
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// just take the path as-is
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options.basePath = paths.dirname(options.name);
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} else if(options.name.indexOf('/') > -1) {
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// make relative to base BBS dir
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options.basePath = paths.join(__dirname, '../', paths.dirname(options.name));
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} else {
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return callback(null, null);
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}
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art.getArt(options.name, options, (err, artInfo) => {
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return callback(null, artInfo);
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});
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},
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function fromSuppliedTheme(artInfo, callback) {
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if(artInfo) {
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return callback(null, artInfo);
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}
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options.basePath = paths.join(config.paths.themes, options.themeId);
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art.getArt(options.name, options, (err, artInfo) => {
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return callback(null, artInfo);
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});
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},
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function fromDefaultTheme(artInfo, callback) {
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if(artInfo || config.defaults.theme === options.themeId) {
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return callback(null, artInfo);
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}
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options.basePath = paths.join(config.paths.themes, config.defaults.theme);
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art.getArt(options.name, options, (err, artInfo) => {
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return callback(null, artInfo);
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});
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},
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function fromGeneralArtDir(artInfo, callback) {
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if(artInfo) {
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return callback(null, artInfo);
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}
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options.basePath = config.paths.art;
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art.getArt(options.name, options, (err, artInfo) => {
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return callback(err, artInfo);
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});
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}
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],
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function complete(err, artInfo) {
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if(err) {
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const logger = _.get(options, 'client.log') || Log;
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logger.debug( { reason : err.message }, 'Cannot find theme art');
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}
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return cb(err, artInfo);
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}
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);
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}
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function displayThemeArt(options, cb) {
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assert(_.isObject(options));
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assert(_.isObject(options.client));
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assert(_.isString(options.name));
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getThemeArt(options, (err, artInfo) => {
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if(err) {
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return cb(err);
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}
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// :TODO: just use simple merge of options -> displayOptions
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const displayOpts = {
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sauce : artInfo.sauce,
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font : options.font,
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trailingLF : options.trailingLF,
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};
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art.display(options.client, artInfo.data, displayOpts, (err, mciMap, extraInfo) => {
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return cb(err, { mciMap : mciMap, artInfo : artInfo, extraInfo : extraInfo } );
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});
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});
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}
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function displayThemedPrompt(name, client, options, cb) {
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const useTempViewController = _.isUndefined(options.viewController);
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async.waterfall(
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[
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function display(callback) {
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const promptConfig = client.currentTheme.prompts[name];
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if(!promptConfig) {
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return callback(Errors.DoesNotExist(`Missing "${name}" prompt configuration!`));
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}
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if(options.clearScreen) {
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client.term.rawWrite(ansi.resetScreen());
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}
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//
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// If we did *not* clear the screen, don't let the font change
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// doing so messes things up -- most terminals that support font
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// changing can only display a single font at at time.
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//
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// :TODO: We can use term detection to do nifty things like avoid this kind of kludge:
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const dispOptions = Object.assign( {}, promptConfig.options );
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if(!options.clearScreen) {
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dispOptions.font = 'not_really_a_font!'; // kludge :)
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}
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displayThemedAsset(
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promptConfig.art,
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client,
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dispOptions,
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(err, artInfo) => {
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if(err) {
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return callback(err);
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}
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return callback(null, promptConfig, artInfo);
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}
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);
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},
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function discoverCursorPosition(promptConfig, artInfo, callback) {
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if(!options.clearPrompt) {
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// no need to query cursor - we're not gonna use it
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|
return callback(null, promptConfig, artInfo);
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}
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client.once('cursor position report', pos => {
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artInfo.startRow = pos[0] - artInfo.height;
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return callback(null, promptConfig, artInfo);
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});
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client.term.rawWrite(ansi.queryPos());
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},
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function createMCIViews(promptConfig, artInfo, callback) {
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const tempViewController = useTempViewController ? new ViewController( { client : client } ) : options.viewController;
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|
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const loadOpts = {
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promptName : name,
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|
mciMap : artInfo.mciMap,
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config : promptConfig,
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};
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|
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tempViewController.loadFromPromptConfig(loadOpts, () => {
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|
return callback(null, artInfo, tempViewController);
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});
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|
},
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|
function pauseForUserInput(artInfo, tempViewController, callback) {
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|
if(!options.pause) {
|
|
return callback(null, artInfo, tempViewController);
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}
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|
|
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client.waitForKeyPress( () => {
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return callback(null, artInfo, tempViewController);
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});
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},
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function clearPauseArt(artInfo, tempViewController, callback) {
|
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if(options.clearPrompt) {
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|
if(artInfo.startRow && artInfo.height) {
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client.term.rawWrite(ansi.goto(artInfo.startRow, 1));
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// Note: Does not work properly in NetRunner < 2.0b17:
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client.term.rawWrite(ansi.deleteLine(artInfo.height));
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} else {
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|
client.term.rawWrite(ansi.eraseLine(1));
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|
}
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|
}
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|
|
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return callback(null, tempViewController);
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|
}
|
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],
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|
(err, tempViewController) => {
|
|
if(err) {
|
|
client.log.warn( { error : err.message }, `Failed displaying "${name}" prompt` );
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|
}
|
|
|
|
if(tempViewController && useTempViewController) {
|
|
tempViewController.detachClientEvents();
|
|
}
|
|
|
|
return cb(null);
|
|
}
|
|
);
|
|
}
|
|
|
|
//
|
|
// Pause prompts are a special prompt by the name 'pause'.
|
|
//
|
|
function displayThemedPause(client, options, cb) {
|
|
|
|
if(!cb && _.isFunction(options)) {
|
|
cb = options;
|
|
options = {};
|
|
}
|
|
|
|
if(!_.isBoolean(options.clearPrompt)) {
|
|
options.clearPrompt = true;
|
|
}
|
|
|
|
const promptOptions = Object.assign( {}, options, { pause : true } );
|
|
return displayThemedPrompt('pause', client, promptOptions, cb);
|
|
}
|
|
|
|
function displayThemedAsset(assetSpec, client, options, cb) {
|
|
assert(_.isObject(client));
|
|
|
|
// options are... optional
|
|
if(3 === arguments.length) {
|
|
cb = options;
|
|
options = {};
|
|
}
|
|
|
|
if(Array.isArray(assetSpec) && _.isString(options.acsCondMember)) {
|
|
assetSpec = client.acs.getConditionalValue(assetSpec, options.acsCondMember);
|
|
}
|
|
|
|
const artAsset = asset.getArtAsset(assetSpec);
|
|
if(!artAsset) {
|
|
return cb(new Error('Asset not found: ' + assetSpec));
|
|
}
|
|
|
|
// :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) {
|
|
return 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 :
|
|
return cb(new Error('Unsupported art asset type: ' + artAsset.type));
|
|
}
|
|
} |