From a4c649ade71c482db6ec12b19d90865849df3265 Mon Sep 17 00:00:00 2001
From: Dave C-J <dave@conway-jones.co.uk>
Date: Sat, 19 Oct 2013 14:31:42 +0100
Subject: [PATCH] New sunrise/sunset node based on suncalc npm... feedback
 please on utility/outputs etc.

---
 time/79-suncalc.html | 83 ++++++++++++++++++++++++++++++++++++++++++++
 time/79-suncalc.js   | 55 +++++++++++++++++++++++++++++
 2 files changed, 138 insertions(+)
 create mode 100644 time/79-suncalc.html
 create mode 100644 time/79-suncalc.js

diff --git a/time/79-suncalc.html b/time/79-suncalc.html
new file mode 100644
index 00000000..92082d1d
--- /dev/null
+++ b/time/79-suncalc.html
@@ -0,0 +1,83 @@
+<!--
+  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.
+-->
+
+<script type="text/x-red" data-template-name="sunrise">
+  <div class="form-row">
+    <label for="node-input-lat"><i class="icon-globe"></i> Latitude</label>
+    <input type="text" id="node-input-lat" placeholder="51.025">
+  </div>
+  <div class="form-row">
+    <label for="node-input-lon"><i class="icon-globe"></i> Longitude</label>
+    <input type="text" id="node-input-lon" placeholder="-1.4">
+  </div>
+  <div class="form-row">
+    <label for="node-input-start"><i class="icon-time"></i> Start</label>
+    <select id="node-input-start" style='width:70%'>
+      <option value="sunrise">Sunrise</option>
+      <option value="sunriseEnd">Sunrise end</option>
+      <option value="dawn">Dawn, morning civil twilight starts</option>
+      <option value="goldenHourEnd">End of morning golden hour</option>
+      <option value="nauticalDawn">Morning nautical twilight starts</option>
+      <option value="nightEnd">Morning astronomical twilight starts</option>
+    </select>
+  </div>
+  <div class="form-row">
+    <label for="node-input-end"><i class="icon-time"></i> End</label>
+    <select id="node-input-end" style='width:70%'>
+      <option value="sunset">Sunset, civil twilight starts</option>
+      <option value="sunsetStart">Sunset start</option>
+      <option value="goldenHour">Start of evening golden hour</option>
+      <option value="dusk">Dusk, Evening astronomical twilight starts</option>
+      <option value="nauticalDusk">Evening nautical twilight starts</option>
+      <option value="night">Dark enough for astronomy</option>
+    </select>
+  </div>
+  <div class="form-row">
+    <label for="node-input-name"><i class="icon-tag"></i> Name</label>
+    <input type="text" id="node-input-name" placeholder="Name">
+  </div>
+</script>
+
+<script type="text/x-red" data-help-name="sunrise">
+    <p>Uses the suncalc module to generate an output at sunrise and sunset based on a specified location.</p>
+    <p>Several choices of definition of sunrise and sunset are available, see the <i><a href = "https://github.com/mourner/suncalc" target="_new">suncalc</a></i> module for details.</p>
+    <p>The first output emits a <b>msg.payload</b> of <i>1</i> or <i>0</i> every minute depending if between selected times or not.
+    The second output emits only on the transition between night to day (<i>1</i>) or day to night (<i>0</i>), and also once at the (re)start of the flow.</p>
+    <p>Also sets <b>msg.topic</b> to <i>sun</i> and <b>msg.moon</b> to the fraction of the moon between 0 and 1.</p>
+</script>
+
+<script type="text/javascript">
+    RED.nodes.registerType('sunrise',{
+        category: 'advanced-input',
+        color:"#ffcc66",
+        defaults: {
+            name: {value:""},
+            lat: {value:"", required:true, validate:RED.validators.number()},
+            lon: {value:"", required:true, validate:RED.validators.number()},
+            start: {value:"", required:true},
+            end: {value:"", required:true}
+        },
+        inputs:0,
+        outputs:2,
+        icon: "sun.png",
+        label: function() {
+            return this.name||"Sun rise/set";
+        },
+        labelStyle: function() {
+            return this.name?"node_label_italic":"";
+        }
+    });
+</script>
diff --git a/time/79-suncalc.js b/time/79-suncalc.js
new file mode 100644
index 00000000..e44414d9
--- /dev/null
+++ b/time/79-suncalc.js
@@ -0,0 +1,55 @@
+/**
+ * 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.
+ **/
+var RED = require("../../red/red");
+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 hour = now.getHours();
+        var mins = now.getMinutes();
+        var times = SunCalc.getTimes(now, node.lat, node.lon);
+        var hour1 = times[node.start].getHours();
+        var mins1 = times[node.start].getMinutes();
+        var hour2 = times[node.end].getHours();
+        var mins2 = times[node.end].getMinutes();
+        var e1 = (hour*60+mins) - (hour1*60+mins1);
+        var e2 = (hour*60+mins) - (hour2*60+mins2);
+        var moon = parseInt(SunCalc.getMoonFraction(now)*100)/100;
+        msg = { payload:0, topic:"sun", moon:moon };
+        if ((e1 > 0) & (e2 < 0)) { msg.payload = 1; }
+        if (msg.payload != oldval) {
+            oldval = msg.payload;
+            msg2 = msg;
+            node.send( [msg,msg2] );
+        }
+        else { node.send(msg); }
+    }, 60000);
+
+    this.on("close", function() {
+        clearInterval(this.tick);
+    });
+}
+RED.nodes.registerType("sunrise",SunNode);