Service update (#42)

* lesley service update:
*Added new fields (notification method and port/interval).

* Service now supports both notification receiving methods (Callback register and notification pulling)

* *Changed interval from miliseconds to seconds.
*Added default values for method value.

* Added Information of "lesley-service" node.

* service html replaced spaces with tabs.

* Service object creation after options has been handled

* Replaced tabs with spaces

* Created options object to configure restAPI service.

v1/lesley-service.html

@@ -3,7 +3,9 @@
         category: "config",
         defaults: {
             name: {value:"lesley-service", required:true},
-            url: {value:"http://localhost:8888", required:true}
+            url: {value:"http://localhost:8888", required:true},
+            notificationMethod: {value:'callback', required:true},
+            methodValue: {value:5728, required:true}
         },
         inputs: 0,
         outputs: 0,
@@ -12,6 +14,25 @@
             return this.name;
         },
     });
+
+    function methodHandler(selectionId, methodValueId) {
+        const selectionElement = document.getElementById(selectionId);
+        var methodValue = document.getElementById(methodValueId);
+
+        switch (selectionElement.value) {
+            case 'polling': {
+                methodValue.labels[0].innerHTML = 'Interval (s)';
+                methodValue.value = 1;
+                break;
+            }
+
+            case 'callback': {
+                methodValue.labels[0].innerHTML = 'Port';
+                methodValue.value = 5728;
+                break;
+            }
+        }
+    }
 </script>
 
 <script type="text/x-red" data-template-name="lesley-service">
@@ -21,12 +42,33 @@
     </div>
     <div class="form-row">
         <label for="node-config-input-url"> URL</label>
-        <input type="text" id="node-config-input-url" placeholder="Name">
+        <input type="text" id="node-config-input-url">
+    </div>
+    <div class="form-row">
+        <label for="node-config-input-notificationMethod">Notification receiving method</label>
+        <select id="node-config-input-notificationMethod" onchange="methodHandler('node-config-input-notificationMethod', 'node-config-input-methodValue')">
+            <option value='callback'>Register a callback</option>
+            <option value='polling'>Pulling</option>
+        </select>
+    </div>
+    <div class="form-row">
+        <label for="node-config-input-methodValue">Port</label>
+        <input type="text" id="node-config-input-methodValue">
     </div>
 </script>
 
 
 <script type="text/x-red" data-help-name="lesley-service">
+    <p>Configuration node for Lesley nodes.</p>
+    <p>Settings:</p>
+    <ul>
+        <li>Name : Name of the node.</li>
+        <li>URL : REST server's URL.</li>
+        <li>Notification receiving method : 
+        Technology which would be used to obtain notifications
+        (Registering a callback and create a server to listen for notificaions or pulling out every interval of time).</li>
+        <li>Port / Interval (s) : Server's port or time interval in seconds depending on what notification recieving method is chosen.</li>
+    </ul>
 </script>
 
 

v1/lesley-service.js

@@ -5,10 +5,21 @@ const restAPI = require('restserver-api');
 module.exports = function (RED) {
   function LesleyService(config) {
     RED.nodes.createNode(this, config);
-    this.options = {};
-    this.options.name = config.name;
-    this.options.url = config.url;
-    this.service = new restAPI.Service({ host: this.options.url });
+    const options = {
+      host: 'http://localhost:8888',
+      interval: 1234,
+      polling: false,
+      port: 5728,
+    };
+    options.host = config.url;
+    if (config.notificationMethod === 'callback') {
+      options.polling = false;
+      options.port = config.methodValue;
+    } else if (config.notificationMethod === 'polling') {
+      options.polling = true;
+      options.interval = config.methodValue * 1000;
+    }
+    this.service = new restAPI.Service(options);
     this.service.start();
   }
   RED.nodes.registerType('lesley-service', LesleyService);