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/**
* Copyright 2013 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.
**/
module.exports = function(RED) {
"use strict";
var mustache = require("mustache");
function TemplateNode(n) {
RED.nodes.createNode(this,n);
this.name = n.name;
this.field = n.field || "payload";
this.template = n.template;
var node = this;
var b = node.field.split(".");
var i = 0;
var m = null;
var rec = function(obj) {
i += 1;
if ((i < b.length) && (typeof obj[b[i-1]] === "object")) {
rec(obj[b[i-1]]); // not there yet - carry on digging
}
else {
if (i === b.length) { // we've finished so assign the value
obj[b[i-1]] = mustache.render(node.template,m);
node.send(m);
}
else {
obj[b[i-1]] = {}; // needs to be a new object so create it
rec(obj[b[i-1]]); // and carry on digging
}
}
}
node.on("input", function(msg) {
try {
m = msg;
i = 0;
rec(msg);
} catch(err) {
node.error(err.message);
}
});
}
RED.nodes.registerType("template",TemplateNode);
RED.library.register("templates");
}
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