refactord, tidied up, added icon for storage and a new node for writing buffers to storage files

rtdb/rtdb-to-flow.js

@@ -0,0 +1,63 @@
+const runtime = require('node-red').runtime
+
+let oldpath
+
+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)
+      if(config.env_var && process.env[config.env_var]){
+        let val = res.val()
+        runtime.flows.getFlow({id: val.id}).then((flow)=>{
+          console.log('rtdb-to-flow old flow updated_at = '+flow.updated_at+' new flow updated_at = '+val.updated_at)
+          if(!flow.updated_at || val.updated_at > flow.updated_at){
+            console.log('updating flow...')
+            runtime.flows.updateFlow({id: val.id, flow: val})
+          }
+          //console.log('val='+val)
+          node.send({payload:val})
+        })
+      } else {
+        console.log('skipping flow update because environment variable '+config.env_var+' was either not defined or not set to true')
+      }
+    }
+
+    let setUpListener = (path)=>{
+      //console.log('rtdb-get setUpListener for path '+path)
+      if(oldpath){
+        this.admin.database().ref(oldpath).off('value', cb)
+      }
+      this.admin.database().ref(path).on('value', cb)
+      oldpath = path
+    }
+
+    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-get to listen for messages')
+    node.on('input', function(msg) {
+      let path = this.path
+      if(msg && msg.payload){
+        path = msg.payload.path
+        setUpListener(path)
+      }
+    }.bind(this));
+
+
+  }
+  RED.nodes.registerType("rtdb-to-flow", FirebaseAdmin);
+}