added on nodes for rtdb and firestore andmade nodes pass through msg objects with as little changes as possible

rtdb/rtdb-get.html

@@ -52,5 +52,10 @@
 </script>
 
 <script type="text/x-red" data-help-name="rtdb-get">
-    <p>A node that wraps the rtdb-get SDK</p>
+    <p>Get data from a path in the rtdb database </p>
+<p>
+input: {"payload": {"path": "foo/bar"}}
+</p><p>
+output: whatever data was at the path "foo/bar" in the rtdb database</p>
+</p>
 </script>

rtdb/rtdb-get.js

@@ -1,6 +1,5 @@
 
-
-let oldpath
+let msgin
 
 module.exports = function(RED) {
 
@@ -9,20 +8,31 @@ module.exports = function(RED) {
     var node = this;
 
     const cb = (res)=>{
-      console.log('firebase get result '+res)
+      console.log('firebase rtdb-get result '+res)
       //console.dir(res)
       let val = res.val()
-      console.dir(val)
-      node.send({payload:val})
+      //console.dir(val)
+      if(msgin){
+        msgin.payload = val
+        node.send(msgin)
+      } else {
+        node.send({payload: val})
+      }
     }
 
     let setUpListener = (path)=>{
-      console.log('rtdb-get setUpListener for path '+path)
-      if(oldpath){
-        this.admin.database().ref(oldpath).off('value', cb)
+      console.log('* rtdb-get setUpListener for path '+path)
+      if(path){
+        this.admin.database().ref(path).once('value').then((res)=>{
+          cb(res)
+        }, (fail)=>{
+          console.log('rtdb-get failure ')
+          console.dir(fail)
+        })
+      }  else {
+        console.log('----- rtdb-get got empty path !!')
+        console.dir(config)
       }
-      this.admin.database().ref(path).on('value', cb)
-      oldpath = path
     }
 
     if(config.cred){
@@ -43,11 +53,11 @@ module.exports = function(RED) {
       let path = this.path
       if(msg && msg.payload){
         path = msg.payload.path
+        msgin = msg
         setUpListener(path)
       }
     }.bind(this));
 
-    setUpListener(this.path)
 
   }
   RED.nodes.registerType("rtdb-get", FirebaseAdmin);

rtdb/rtdb-on.html

@@ -0,0 +1,61 @@
+<script type="text/javascript">
+  RED.nodes.registerType('rtdb-on',{
+
+    category: 'firebase-admin',
+    color: '#a6bbcf',
+    defaults: {
+      name: {value:""},
+      path: {value:""},
+      cred: {value: "", type: 'firebase-config'}
+    },
+    inputs:1,
+    outputs:1,
+    icon: "firebase-admin-icon.png",
+    label: function() {
+      return this.name||"rtdb-on";
+    },
+
+    oneditsave: function() {
+      let type = $('#apitype-select').val()
+      console.log('type is set to '+type)
+
+    },
+
+    oneditprepare: function() {
+      $('#apitype-select').change(function () {
+        $("#node-input-apitype").val($(this).find('option:selected').val())
+      });
+      $("#apitype-select").val($("#node-input-apitype").val())
+      $('#apitype-select').trigger('change');
+    }
+  });
+
+
+</script>
+
+<script type="text/x-red" data-template-name="rtdb-on">
+    <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-cred"><i class="icon-tag"></i> Credentials</label>
+        <input type="text" id="node-input-cred" placeholder="Name">
+    </div>
+
+</script>
+
+<script type="text/x-red" data-help-name="rtdb-on">
+    <p>Get data from a path in the rtdb database </p>
+<p>
+input: {"payload": {"path": "foo/bar"}}
+</p><p>
+output: whatever data was at the path "foo/bar" in the rtdb database</p>
+</p>
+</script>

rtdb/rtdb-on.js

@@ -0,0 +1,65 @@
+
+
+let oldpath
+let msgin
+
+module.exports = function(RED) {
+
+  function FirebaseAdmin(config) {
+    RED.nodes.createNode(this, config);
+    var node = this;
+
+    const cb = (res)=>{
+      console.log('firebase get result '+res)
+      //console.dir(res)
+      let val = res.val()
+      //console.dir(val)
+      if(msgin){
+        msgin.payload = val
+        node.send(msgin)
+      } else {
+        node.send({payload: val})
+      }
+
+    }
+
+    let setUpListener = (path)=>{
+      console.log('rtdb-on setUpListener for path '+path)
+      if(oldpath){
+        this.admin.database().ref(oldpath).off('value', cb)
+      }
+      if(path){
+        this.admin.database().ref(path).on('value', cb)
+        oldpath = path
+      }  else {
+        console.log('----- rtdb-on got empty path !!')
+        console.dir(config)
+      }
+    }
+
+    if(config.cred){
+      let c = RED.nodes.getNode(config.cred)
+      this.admin = c.admin
+    }
+
+    //console.log('------------------------------- rtdg-get config')
+    //console.dir(config)
+    this.path = config.path
+    if(this.path){
+      setUpListener(this.path)
+    }
+
+
+    //console.log('configuring rtdb-on to listen for messages')
+    node.on('input', function(msg) {
+      let path = this.path
+      if(msg && msg.payload){
+        path = msg.payload.path
+        msgin = msg
+        setUpListener(path)
+      }
+    }.bind(this));
+
+  }
+  RED.nodes.registerType("rtdb-on", FirebaseAdmin);
+}

rtdb/rtdb-push.html

@@ -47,4 +47,7 @@
 
 <script type="text/x-red" data-help-name="rtdb-push">
     <p>A node that wraps the rtdb-push SDK.</p>
+    Pushes the new object onto an array under the path
+<p>
+input: {"payload": {"path": "foo/bar", "obj": {"the": "object"}}
 </script>

rtdb/rtdb-query.html

@@ -47,4 +47,21 @@
 
 <script type="text/x-red" data-help-name="rtdb-query">
     <p>A node that wraps the rtdb-query SDK</p>
+    Set up a reactive query for a path in the rtdb database.
+<p>
+input: {"payload": {"path": "foo/bar", queries:[], on: "value}}
+<p>
+on: "value" (can also be "child_added", "child_removed", "child_changed", "child_moved").
+If an "on" property is missing, on: "value" is assumed as default
+<p>
+Where each query is an object that can look like either of the following examples;
+   <p>
+- {"startAt": "foo"}
+- {"endAt": "bar"}
+- {"equalTo": "quux"}
+- {"orderBy": "child", "value": "height"}  (can also be "key" or "value)
+- {"limitTo": "last", "value": 3}  (can also be "first")
+<p>
+output: [an array of results for the query]
+
 </script>

rtdb/rtdb-query.js

@@ -1,5 +1,5 @@
 
-
+let msgin
 let oldpath
 let oldeventtype
 
@@ -18,11 +18,13 @@ module.exports = function(RED) {
       console.dir(res)
       let val = res.val()
       console.log('val='+val)
-      node.send({payload:val})
+      msgin.payload = val
+      node.send(msgin)
     }
 
     node.on('input', function(msg) {
       if(msg && msg.payload){
+        msgin = msg
         const path = msg.payload.path
         const eventtype = msg.payload.on || 'value'
         if(oldpath){

rtdb/rtdb-set.html

@@ -47,4 +47,7 @@
 
 <script type="text/x-red" data-help-name="rtdb-set">
     <p>A node that wraps the rtdb-set SDK</p>
+    Set data at a path in the rtdb database. Use "on" snapshot so will fire every time the data at the path changes and so drive flow execution from that point.
+<p>
+input: {"payload": {"path": "foo/bar", "obj": {"the": "object"}}
 </script>