special theme.set socket call + static dir support, closes #427, tweaked languages 404 to work with subdirs

public/src/forum/admin/themes.js

@@ -21,24 +21,21 @@ define(function() {
 							var parentEl = $(e.target).parents('li'),
 								themeType = parentEl.attr('data-type'),
 								cssSrc = parentEl.attr('data-css'),
-								cssName = parentEl.attr('data-theme');
+								themeId = parentEl.attr('data-theme');
 
-							socket.emit('api:config.set', {
-								key: 'theme:type',
-								value: themeType
-							});
-
-							socket.emit('api:config.set', {
-								key: 'theme:id',
-								value: cssName
-							});
-
-							if (themeType === 'bootswatch') {
-								socket.emit('api:config.set', {
-									key: 'theme:src',
-									value: cssSrc
+							socket.emit('api:admin.theme.set', {
+								type: themeType,
+								id: themeId,
+								src: cssSrc
+							}, function(err) {
+								app.alert({
+									alert_id: 'admin:theme',
+									type: 'success',
+									title: 'Theme Changed',
+									message: 'You have successfully changed your NodeBB\'s theme. Please restart to see the changes.',
+									timeout: 2500
 								});
-							}
+							});
 						break;
 					}
 				}

src/meta.js

@@ -98,6 +98,43 @@ var utils = require('./../public/src/utils.js'),
 					});
 				});
 			});
+		},
+		set: function(data, callback) {
+			var	themeData = {
+					'theme:type': data.type,
+					'theme:id': data.id,
+					'theme:staticDir': ''
+				};
+
+			switch(data.type) {
+				case 'local':
+					async.waterfall([
+						function(next) {
+							fs.readFile(path.join(__dirname, '../node_modules', data.id, 'theme.json'), function(err, config) {
+								if (!err) {
+									config = JSON.parse(config.toString());
+									next(null, config);
+								} else {
+									next(err);
+								}
+							});
+						},
+						function(config, next) {
+							if (config.staticDir) {
+								themeData['theme:staticDir'] = config.staticDir;
+							}
+
+							RDB.hmset('config', themeData, next);
+						}
+					], function(err) {
+						callback(err);
+					});
+				break;
+
+				case 'bootswatch':
+					RDB.hmset('config', themeData, callback);
+				break;
+			}
 		}
 	};
 

src/webserver.js

@@ -145,14 +145,25 @@ var express = require('express'),
 						});
 					},
 					function(next) {
-						RDB.hmget('config', 'theme:type', 'theme:id', function(err, themeData) {
+						// Theme configuration
+						RDB.hmget('config', 'theme:type', 'theme:id', 'theme:staticDir', function(err, themeData) {
 							var themeId = (themeData[1] || 'nodebb-theme-vanilla');
 
+							// Detect if a theme has been selected, and handle appropriately
 							if (!themeData[0] || themeData[0] === 'local') {
+								// Local theme
 								if (process.env.NODE_ENV === 'development') {
 									winston.info('[themes] Using theme ' + themeId);
 								}
 
+								// Theme's static directory
+								if (themeData[2]) {
+									app.use('/css/assets', express.static(path.join(__dirname, '../node_modules', themeData[1], themeData[2])));
+									if (process.env.NODE_ENV === 'development') {
+										winston.info('Static directory routed for theme: ' + themeData[1]);
+									}
+								}
+
 								app.use(require('less-middleware')({
 									src: path.join(__dirname, '../node_modules/' + themeId),
 									dest: path.join(__dirname, '../public/css'),
@@ -189,7 +200,7 @@ var express = require('express'),
 
 				// 404 catch-all
 				app.use(function (req, res, next) {
-					var	isLanguage = /^\/language\/[\w]{2,}\/[\w]+\.json/,
+					var	isLanguage = /^\/language\/[\w]{2,}\/.*\.json/,
 						isClientScript = /^\/src\/forum\/[\w]+\.js/;
 
 					res.status(404);

src/websockets.js

@@ -936,6 +936,8 @@ module.exports.init = function(io) {
 				callback(err ? err.message : null);
 			});
 		});
+
+		socket.on('api:admin.theme.set', meta.themes.set);
 	});
 
 }