cloud-red/src/components/editor-api/lib/editor/ui.js

Harnessing Serverless for your cloud integration needs

/**
 * Copyright JS Foundation and other contributors, http://js.foundation
 *
 * 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 path = require('path');
var Mustache = require('mustache');
var mime = require('mime');

var apiUtils = require('../util');

var theme = require('./theme');

var runtimeAPI;
var editorClientDir = path.dirname(require.resolve('../../../editor-client'));
var defaultNodeIcon = path.join(
  editorClientDir,
  'public',
  'red',
  'images',
  'icons',
  'arrow-in.png'
);
var editorTemplatePath = path.join(editorClientDir, 'templates', 'index.mst');
var editorTemplate;

module.exports = {
  init: function(_runtimeAPI) {
    runtimeAPI = _runtimeAPI;
    editorTemplate = fs.readFileSync(editorTemplatePath, 'utf8');
    Mustache.parse(editorTemplate);
  },

  ensureSlash: function(req, res, next) {
    var parts = req.originalUrl.split('?');
    if (parts[0].slice(-1) != '/') {
      parts[0] += '/';
      var redirect = parts.join('?');
      res.redirect(301, redirect);
    } else {
      next();
    }
  },
  icon: function(req, res) {
    var icon = req.params.icon;
    var scope = req.params.scope;
    var module = scope ? scope + '/' + req.params.module : req.params.module;
    var opts = {
      user: req.user,
      module: module,
      icon: icon
    };
    runtimeAPI.nodes
      .getIcon(opts)
      .then(function(data) {
        if (data) {
          var contentType = mime.getType(icon);
          res.set('Content-Type', contentType);
          res.send(data);
        } else {
          res.sendFile(defaultNodeIcon);
        }
      })
      .catch(function(err) {
        console.log(err.stack);
        apiUtils.rejectHandler(req, res, err);
      });
  },
  editor: function(req, res) {
    res.send(Mustache.render(editorTemplate, theme.context()));
  },
  editorResources: express.static(path.join(editorClientDir, 'public'))
};