Updates to match API changes (#392)

* Updates to match API changes

Update to the node to match the server API changes. An attempt has been made to leave a legacy path for existing installations that may have not updated the server side.

* Updated following comments.

Update following comments.

Output removed and node.warn or error used.

oneeditprepare added.

Name moved to last item.

In addition, a check added to ensure nodegroup has valid value.

Question: I have added a 'return' as I do not want data posted if there is not a valid nodegroup.  Is this the best way to exit the function?  Always taught that multiple exits was a bad idea.  I wondered about raising an error / exception and then catching it but not sure how to do that.

* Update documentation for revised node

io/emoncms/88-emoncms.html

@@ -6,22 +6,36 @@
     </div>
     <div class="form-row">
         <label for="node-input-nodegroup"><i class="fa fa-object-group"></i> Node</label>
-        <input type="text" id="node-input-nodegroup" placeholder="number eg: 3">
+        <input type="text" id="node-input-nodegroup" placeholder="or set by msg.nodegroup">
+    </div>
+    <div class="form-row">
+        <label for="node-input-datatype"><i class="fa fa-tag"></i> Data Type</label>
+        <select id="node-input-datatype" style="width:180px;">
+            <option value="legacy">Legacy Processing</option>
+            <option value="fulljson">Valid JSON object</option>
+            <option value="json">Simple JSON</option>
+            <option value="CSV">CSV</option>
+        </select>
     </div>
     <div class="form-row">
         <label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
         <input type="text" id="node-input-name" placeholder="Emoncms">
     </div>
+
 </script>
 
 <script type="text/x-red" data-help-name="emoncms">
     <p>Posts data to Emoncms.</p>
     <p>The <code>msg.payload</code> can contain either a comma separated list of name
-    value pairs e.g. <pre>name:value,...</pre> or a comma separated list of values e.g. <pre>1,2,...</pre>
+    value pairs (legacy) e.g. <pre>name:value,...</pre> or a comma separated list of values (CSV) e.g. <pre>1,2,...</pre>
-    or a simple javascript object e.g. <pre>msg.payload = {temp:12}</pre>
+    an Emoncms simple data object e.g. <pre>{temp:12}</pre>
-    <p>If <i>Node</i> is left blank <code>msg.nodegroup</code> will used.</p>
+    or a valid JSON object e.g. <pre>{"Total":3.273,"Yesterday":1.695}</pre>
-    <p>Insertion time can be manipulated by setting <code>msg.time</code>.
+    <p>The node must be specified either by the <i>Node</i> element or if left blank by <code>msg.nodegroup</code></p>
-    This must be in epoch format - seconds since 1970.</p>
+    <p>Data Type must be one of <pre>legacy, json, fulljson, CSV</pre></p>
+    <p>Insertion time can be set by using <code>msg.time</code>.
+    This can either be a valid ISO 8601 format or seconds since 1970. Not setting a time or setting an incorrect 
+    time format will result in data being pushed to Emoncms without the time element.</p>
+    <p>The output node contains the server response</p>
 </script>
 
 <script type="text/javascript">
@@ -29,9 +43,10 @@
         category: 'output',
         color:"rgb(91, 192, 222)",
         defaults: {
-            name: {value:"Emoncms"},
+            name: {value:"Emoncms Push"},
             emonServer: {type:"emoncms-server", required:true},
-            nodegroup: {value:"", validate:function(v) {return ((v === "")||(/^[\d\w\s.-]*$/).test(v));} }
+            nodegroup: {value:"", validate:function(v) {return ((v === "")||(/^[\d\w\s.-]*$/).test(v));} },
+            datatype: {value:"legacy"}
         },
         inputs:1,
         outputs:0,
@@ -42,14 +57,15 @@
         },
         labelStyle: function() {
             return this.name?"node_label_italic":"";
+        },
+        oneditprepare: function() {
+            if (this.datatype === undefined) {
+                $("#node-input-datatype").val("legacy");
+            }
         }
     });
 </script>
 
-
-
-
-
 <script type="text/x-red" data-template-name="emoncms in">
     <div class="form-row">
         <label for="node-input-emonServer"><i class="fa fa-globe"></i> Emoncms server</label>

io/emoncms/88-emoncms.js

@@ -22,11 +22,15 @@ module.exports = function(RED) {
         this.apikey = sc.credentials.apikey;
 
         this.nodegroup = n.nodegroup || "";
+        this.datatype = n.datatype || "";
         var node = this;
         var http;
         if (this.baseurl.substring(0,5) === "https") { http = require("https"); }
         else { http = require("http"); }
         this.on("input", function(msg) {
+
+            // setup the data for the URI
+            if (this.datatype == "legacy"){
                 this.url = this.baseurl + '/input/post.json?';
                 if (typeof(msg.payload) !== "string") {
                     this.url += 'json=' + JSON.stringify(msg.payload);
@@ -39,24 +43,81 @@ module.exports = function(RED) {
                         this.url += 'csv=' + msg.payload;
                     }
                 }
-            this.url += '&apikey='+this.apikey;
+            }
+            else if (this.datatype == "fulljson"){
+                this.url = this.baseurl + '/input/post?';
+                this.url += 'fulljson=' + encodeURIComponent(JSON.stringify(msg.payload));
+            }
+            else if (this.datatype == "json"){
+                this.url = this.baseurl + '/input/post?';
+                this.url += 'json={' + encodeURIComponent(msg.payload) + '}';
+            }
+            else if (this.datatype == "CSV"){
+                this.url = this.baseurl + '/input/post?';
+                this.url += 'csv=' + msg.payload;
+            }
+            else {
+                node.error("ERROR : No valid data type set - " + this.datatype);
+                return;
+            }
+
+            // setup the node group for URI. Must have a node group or exit
             var nodegroup = this.nodegroup || msg.nodegroup;
-            if (nodegroup !== "") {
+            if (typeof nodegroup === "undefined") {
+                node.error("ERROR: A Node group must be specified - " + nodegroup);
+                node.status({fill:"red",shape:"ring",text:"No Nodegroup"});
+                return;
+            } else {
                 this.url += '&node=' + nodegroup;
             }
-            if (typeof msg.time !== 'undefined') {
+
-                if (!isNaN(parseInt(msg.time))) { this.url += '&time=' + msg.time; }
+            // setup the API key for URI.
+            this.url += '&apikey=' + this.apikey;
+
+            // check for a time object and setup URI if valid
+            if (typeof msg.time === "undefined") {
+                node.warn("WARN: Time object undefined, no time set");
             }
+            else {
+                if (!isNaN(msg.time)) { 
+                    this.url += '&time=' + msg.time;
+                }
+                else {
+                    if (isNaN(Date.parse(msg.time))) {
+                        // error condition
+                        node.warn("WARN: Time object not valid, no time set - " + msg.time);
+                    } else {
+                        this.url += '&time=' + Date.parse(msg.time)/1000; //seconds
+                    }
+                }
+                delete msg.time; // clean it up for the error msg
+            }
+            var URIsent = this.url;
+
             http.get(this.url, function(res) {
+                msg.topic = "http response";
                 msg.rc = res.statusCode;
                 msg.payload = "";
                 res.setEncoding('utf8');
                 res.on('data', function(chunk) {
                     msg.payload += chunk;
                 });
-                res.on('end', function() {
+                res.on('end', function() { //A 200 StatusCode does not mean data input sucess
-                    if (msg.rc === 200) {
+                    try {
-                        node.send(msg);
+                        msg.payload = JSON.parse(msg.payload);
+                        if (msg.payload.success) {
+                            node.status({fill:"green",shape:"dot",text:"Success"});
+                        } else {
+                            msg.warning = "ERROR: API Call Failed";
+                            msg.payload.urlsent = decodeURIComponent(URIsent);
+                            node.error(msg);
+                            node.status({fill:"red",shape:"ring",text:"Failed"});
+                        }
+                    }
+                    catch(err) {
+                        msg.warning = "ERROR: Http response"
+                        node.warn(msg);
+                        node.status({fill:"red",shape:"ring",text:"http issue"});
                     }
                 });
             }).on('error', function(e) {

io/emoncms/README.md

@@ -1,7 +1,7 @@
 node-red-node-emoncms
 =====================
 
-A <a href="http://nodered.org" target="_new">Node-RED</a> node to send fetch/post data to/from <a href="http://emoncms.org" target="_new">emoncms.org</a> or any other emoncms server.
+A <a href="http://nodered.org" target="_new">Node-RED</a> node to send fetch/post data to/from <a href="http://emoncms.org" target="_new">emoncms.org</a>, local emoncms server or any other emoncms server.
 
 Install
 -------
@@ -10,30 +10,38 @@ Run the following command in your Node-RED user directory - typically `~/.node-r
 
         npm install node-red-node-emoncms
 
-
 Usage
 -----
 
-### Emoncms post.
+### Emoncms post:
+#### Preferred Data Type
 
-The `msg.payload` can contain either a comma separated list of name
+The API now accepts  a validated JSON object for the name value pairs.  This is the preferred data type.
-value pairs, e.g.
+
+#### Legacy Data Type Support
+
+The original input API for emoncms used a URI in the format `post.json?`.  If the data type of legacy is selected, the `msg.payload` can contain:
+
+A comma separated list of name value pairs, e.g.
 
     name:value,...
 
-or a comma separated list of values, e.g.
+A comma separated list of values (CSV), e.g.
 
     1,2,..
 
-or a simple javascript object e.g.
+A simple javascript object (note no quotes) e.g.
 
-        msg.payload = {temp:12, humidity:56};
+    {temp:12, humidity:56};
 
-If *Nodegroup* is left blank `msg.nodegroup` will used (if set).
+#### Node
-This should be a numeric value.
+If *Node* is left blank `msg.nodegroup` will be used (if set).  A *Node* must be set or the flow will fail.
 
-Insertion time can be manipulated by setting `msg.time`. This **must** be in
+#### msg.time
-epoch format - i.e. seconds since 1970.
+Insertion time can be manipulated by setting `msg.time`. This can be an ISO format date/time or a number of seconds in epoch format - i.e. seconds since 1970.  If no time is set time now is set by emoncms.
+
+#### Status
+The flow will indicate if the node has successfully called the API.  This is not a guarantee the data has been inserted to emoncms.
 
 ### Emoncms In: