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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 operators = {
'eq': function(a, b) { return a == b; },
'neq': function(a, b) { return a != b; },
'lt': function(a, b) { return a < b; },
'lte': function(a, b) { return a <= b; },
'gt': function(a, b) { return a > b; },
'gte': function(a, b) { return a >= b; },
'btwn': function(a, b, c) { return a >= b && a <= c; },
'cont': function(a, b) { return (a + "").indexOf(b) != -1; },
'regex': function(a, b) { return (a + "").match(new RegExp(b)); },
'true': function(a) { return a === true; },
'false': function(a) { return a === false; },
'null': function(a) { return typeof a == "undefined"; },
'nnull': function(a) { return typeof a != "undefined"; },
'else': function(a) { return a === true; }
};
function SwitchNode(n) {
RED.nodes.createNode(this, n);
this.rules = n.rules;
this.property = n.property;
this.checkall = n.checkall || "true";
var propertyParts = n.property.split(".");
var node = this;
for (var i=0; i<this.rules.length; i+=1) {
var rule = this.rules[i];
if (!isNaN(Number(rule.v))) {
rule.v = Number(rule.v);
rule.v2 = Number(rule.v2);
}
}
this.on('input', function (msg) {
var onward = [];
try {
var prop = propertyParts.reduce(function (obj, i) {
return obj[i]
}, msg);
var elseflag = true;
for (var i=0; i<node.rules.length; i+=1) {
var rule = node.rules[i];
var test = prop;
if (rule.t == "else") { test = elseflag; elseflag = true; }
if (operators[rule.t](test,rule.v, rule.v2)) {
onward.push(msg);
elseflag = false;
if (node.checkall == "false") { break; }
} else {
onward.push(null);
}
}
this.send(onward);
} catch(err) {
node.warn(err);
}
});
}
RED.nodes.registerType("switch", SwitchNode);
}
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