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-rw-r--r--dgbuilder/red/ui.js77
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+/**
+ * Copyright 2013, 2014 IBM Corp.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ **/
+var express = require('express');
+var fs = require("fs");
+var events = require("./events");
+var path = require("path");
+
+var icon_paths = [path.resolve(__dirname + '/../public/icons')];
+
+var settings; // settings has to be global, otherwise variable not in scope for express
+
+events.on("node-icon-dir",function(dir) {
+ icon_paths.push(path.resolve(dir));
+});
+
+
+function setupUI(_settings,app) {
+
+ settings = _settings;
+
+ // Need to ensure the url ends with a '/' so the static serving works
+ // with relative paths
+ app.get("/",function(req,res) {
+ if (req.originalUrl.slice(-1) != "/") {
+ res.redirect(req.originalUrl+"/");
+ } else {
+ req.next();
+ }
+ });
+
+ var iconCache = {};
+ //TODO: create a default icon
+ var defaultIcon = path.resolve(__dirname + '/../public/icons/arrow-in.png');
+
+ app.get("/icons/:icon",function(req,res) {
+ if (iconCache[req.params.icon]) {
+ res.sendfile(iconCache[req.params.icon]); // if not found, express prints this to the console and serves 404
+ } else {
+ for (var p=0;p<icon_paths.length;p++) {
+ var iconPath = path.join(icon_paths[p],req.params.icon);
+ if (fs.existsSync(iconPath)) {
+ res.sendfile(iconPath);
+ iconCache[req.params.icon] = iconPath;
+ return;
+ }
+ }
+ res.sendfile(defaultIcon);
+ }
+ });
+
+ app.get("/settings", function(req,res) {
+ var safeSettings = {
+ httpNodeRoot: settings.httpNodeRoot,
+ version: settings.version
+ };
+ res.json(safeSettings);
+ });
+
+ app.use("/",express.static(__dirname + '/../public'));
+
+ return app;
+}
+
+module.exports = setupUI;