Warn if node cannot access filesystem

CHANGELOG.md

@@ -1,5 +1,9 @@
 # node-red-contrib-boolean-logic-ultimate
 <p>
+<b>Version 0.0.5</b><br/>
+- Bypass persistency if node-red user hasn't permissions to write to the filesystem.<br/>
+</p>
+<p>
 <b>Version 0.0.4</b><br/>
 - Fixed conflict issue if you have the old boolean logic installed<br/>
 </p>

boolean-logic-ultimate/BooleanLogicUltimate.js

@@ -24,7 +24,7 @@ module.exports = function(RED) {
 					node.status({fill: "blue",shape: "ring",text: "Loaded persistent states (" + Object.keys(node.state).length + " total)."});
 				}
 			} catch (error) {
-				node.status({fill: "grey",shape: "ring",text: "No persistent states"});
+				node.status({fill: "grey",shape: "ring",text: "No persistent states: " + error});
 			}
 			
 		} else {
@@ -45,8 +45,13 @@ module.exports = function(RED) {
 
 				// Sabe the state array to a perisistent file
 				if (this.config.persist == true) { 
-					if (!fs.existsSync("states")) fs.mkdirSync("states");
-					fs.writeFileSync("states/" + node.id.toString(),JSON.stringify(state));
+					try {
+						if (!fs.existsSync("states")) fs.mkdirSync("states");
+						fs.writeFileSync("states/" + node.id.toString(),JSON.stringify(state));
+	
+					} catch (error) {
+						node.status({fill: "red",shape: "dot",text: "Node cannot write to filesystem: " + error});
+					}
 				}
 								
 				// Do we have as many inputs as we expect?

package.json

@@ -1,6 +1,6 @@
 {
     "name": "node-red-contrib-boolean-logic-ultimate",
-    "version": "0.0.4",
+    "version": "0.0.5",
     "description": "A set of Node-RED enhanced boolean logic, with persisten values after reboot and more",
     "author": "Supergiovane (https://github.com/Supergiovane)",
     "dependencies": {