feature: added send-notification node

Author: sbender9

package.json

@@ -15,7 +15,8 @@
       "signalk-flatten-delta": "signalk-flatten-delta.js",
       "signalk-send-delta": "signalk-send-delta.js",
       "signalk-send-pathvalue": "signalk-send-pathvalue.js",
-      "signalk-send-put": "signalk-send-put.js"
+      "signalk-send-put": "signalk-send-put.js",
+      "signalk-send-notification": "signalk-send-notification.js"
     }
   }
 }

signalk-send-notification.html

@@ -0,0 +1,81 @@
+<script type="text/javascript">
+  RED.nodes.registerType('signalk-send-notification',{
+    category: 'output',
+    color: '#a6bbcf',
+    defaults: {
+      name: {value:""},
+      path: {value: ""},
+      state: {value:"alarm"},
+      message: {value: ""},
+      visual: {value: true},
+      sound: {value: true}
+    },
+    inputs:1,
+    outputs:0,
+    align: 'right',
+    icon: "bridge.png",
+    label: function() {
+      return this.name||"signalk-send-notification";
+    }
+  });
+</script>
+
+<script type="text/x-red" data-template-name="signalk-send-notification">
+    <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>
+  <div class="form-row">
+        <label for="node-input-path"><i class="icon-tag"></i> Path</label>
+        <input type="text" id="node-input-path" placeholder="Path">
+  </div>
+  <div class="form-row">
+  <label for="node-input-state"><i class="icon-tag"></i> State</label>
+  <select id="node-input-state" placeholder="State">
+    <option value="normal">Normal</option>
+    <option value="alert">Alert</option>
+    <option value="warn">Warn</option>
+    <option value="alarm">Alarm</option>
+   <option value="emergency">Emergency</option>
+  </select>
+  </div>
+  <div class="form-row">
+        <label for="node-input-visual"><i class="icon-tag"></i> Visual</label>
+        <input type="checkbox" id="node-input-visual" placeholder="Visual">
+  </div>
+  <div class="form-row">
+        <label for="node-input-sound"><i class="icon-tag"></i> Sound</label>
+        <input type="checkbox" id="node-input-sound" placeholder="Sound">
+  </div>
+  <div class="form-row">
+        <label for="node-input-message"><i class="icon-tag"></i> Message</label>
+        <input type="text" id="node-input-message" placeholder="Message">
+  </div>
+</script>
+
+<script type="text/x-red" data-help-name="signalk-send-notification">
+
+  <p>Output that sends a SignalK notification</p>
+
+  <p>If the input payload is an object, then it will use the keys path, state, method, and message. Example below. Otherwise  it will use the configured values.</p
+
+<p>To specify all the info, send:</p>
+  <pre><code class="javascript">
+{payload: {
+  "path":"notifications.testNotification",
+  "state":"alarm",
+  "method":["visual","sound"],
+  "message":"this is a notification message"
+}}
+</code></pre>
+
+<p>Or to specify some of the info, send:</p>
+  <pre><code class="javascript">
+{payload: {
+  "state":"normal",
+}}
+</code></pre>
+
+
+
+</script>

signalk-send-notification.js

@@ -0,0 +1,50 @@
+
+module.exports = function(RED) {
+  function signalKSendNotification(config) {
+    RED.nodes.createNode(this,config);
+    var node = this;
+
+    var app = node.context().global.get('app')
+    const _ = node.context().global.get('lodash')
+    
+    node.on('input', msg => {
+      let info = _.isObject(msg.payload) ? msg.payload : null
+      let path = info && info.path ? info.path : config.path
+      let state = info && info.state ? info.state : config.state
+      let message = info && info.message ? info.message : config.message
+      let method
+      if ( info && info.method ){
+        method = info.method
+      } else {
+        method = []
+        if ( config.visual ) {
+          method.push('visual')
+        }
+        if ( config.sound ) {
+          method.push('sound')
+        }
+      } 
+      
+      
+      let delta = {
+        updates: [
+          {
+            values: [
+              {
+                path: 'notifications.' + path,
+                value: {
+                  state: state,
+                  method: method,
+                  message: message
+                }
+              }
+            ]
+          }
+        ]
+      }
+      node.log(JSON.stringify(delta))
+      app.handleMessage('signalk-node-red', delta)
+    })
+  }
+  RED.nodes.registerType("signalk-send-notification", signalKSendNotification);
+}