Start making non-red-nodes tolerant to missing payloads

time/suncalc/79-suncalc.js

@@ -0,0 +1,57 @@
+/**
+ * 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.
+ **/
+
+module.exports = function(RED) {
+    "use strict";
+    var SunCalc = require('suncalc');
+
+    function SunNode(n) {
+        RED.nodes.createNode(this,n);
+        this.lat = n.lat;
+        this.lon = n.lon;
+        this.start = n.start;
+        this.end = n.end;
+
+        var node = this;
+        var oldval = null;
+
+        this.tick = setInterval(function() {
+            var now = new Date();
+            var times = SunCalc.getTimes(now, node.lat, node.lon);
+            var nowMillis = Date.UTC(now.getUTCFullYear(),now.getUTCMonth(),now.getUTCDate(),now.getUTCHours(),now.getUTCMinutes());
+            var startMillis = Date.UTC(times[node.start].getUTCFullYear(),times[node.start].getUTCMonth(),times[node.start].getUTCDate(),times[node.start].getUTCHours(),times[node.start].getUTCMinutes());
+            var endMillis = Date.UTC(times[node.end].getUTCFullYear(),times[node.end].getUTCMonth(),times[node.end].getUTCDate(),times[node.end].getUTCHours(),times[node.end].getUTCMinutes());
+            var e1 = nowMillis - startMillis;
+            var e2 = nowMillis - endMillis;
+            var moon = parseInt(SunCalc.getMoonIllumination(now).fraction*100+0.5)/100;
+            var msg = { payload:0, topic:"sun", moon:moon };
+            if ((e1 > 0) & (e2 < 0)) { msg.payload = 1; }
+            if (oldval == null) { oldval = msg.payload; }
+            if (msg.payload == 1) { node.status({fill:"yellow",shape:"dot",text:"day"}); }
+            else { node.status({fill:"blue",shape:"dot",text:"night"}); }
+            if (msg.payload != oldval) {
+                oldval = msg.payload;
+                node.send( [msg,msg] );
+            }
+            else { node.send(msg); }
+        }, 60000);
+
+        this.on("close", function() {
+            clearInterval(this.tick);
+        });
+    }
+    RED.nodes.registerType("sunrise",SunNode);
+}