Let watch node recurse into subdirectories

to close #1140

nodes/core/io/23-watch.html

@@ -19,6 +19,11 @@
          <label for="node-input-files"><i class="fa fa-file"></i> <span data-i18n="watch.label.files"></span></label>
          <input id="node-input-files" type="text" tabindex="1" data-i18n="[placeholder]watch.placeholder.files">
     </div>
+    <div class="form-row">
+        <label>&nbsp;</label>
+        <input type="checkbox" id="node-input-recursive" style="display:inline-block; width:auto; vertical-align:top;">
+        <label for="node-input-recursive" style="width:70%;"> <span data-i18n="watch.label.recursive"></span></label>
+    </div>
     <div class="form-row">
         <label for="node-input-name"><i class="fa fa-tag"></i> <span data-i18n="common.label.name"></span></label>
         <input type="text" id="node-input-name" data-i18n="[placeholder]common.label.name">
@@ -46,7 +51,8 @@
         category: 'advanced-input',
         defaults: {
             name: {value:""},
-            files: {value:"",required:true}
+            files: {value:"",required:true},
+            recursive: {value:""}
         },
         color:"BurlyWood",
         inputs:0,

nodes/core/io/23-watch.js

@@ -19,10 +19,23 @@ module.exports = function(RED) {
     var Notify = require("fs.notify");
     var fs = require("fs");
     var sep = require("path").sep;
+    var path = require("path");
+
+    var getAllDirs = function (dir, filelist) {
+        filelist = filelist || [];
+        fs.readdirSync(dir).forEach(file => {
+            if (fs.statSync(path.join(dir, file)).isDirectory() ) {
+                filelist.push(path.join(dir, file));
+                getAllDirs(path.join(dir, file), filelist);
+            }
+        });
+        return filelist;
+    }
 
     function WatchNode(n) {
         RED.nodes.createNode(this,n);
 
+        this.recursive = n.recursive || false;
         this.files = (n.files || "").split(",");
         for (var f=0; f < this.files.length; f++) {
             this.files[f] = this.files[f].trim();
@@ -30,6 +43,14 @@ module.exports = function(RED) {
         this.p = (this.files.length === 1) ? this.files[0] : JSON.stringify(this.files);
         var node = this;
 
+        if (node.recursive) {
+            for (var fi in node.files) {
+                if (node.files.hasOwnProperty(fi)) {
+                    node.files = node.files.concat(getAllDirs( node.files[fi]));
+                }
+            }
+        }
+
         var notifications = new Notify(node.files);
         notifications.on('change', function (file, event, path) {
             var stat;
@@ -41,11 +62,17 @@ module.exports = function(RED) {
             var msg = { payload:path, topic:node.p, file:file };
             if (stat) {
                 if (stat.isFile()) { type = "file"; msg.size = stat.size; }
-                else if (stat.isDirectory()) { type = "directory"; }
                 else if (stat.isBlockDevice()) { type = "blockdevice"; }
                 else if (stat.isCharacterDevice()) { type = "characterdevice"; }
                 else if (stat.isSocket()) { type = "socket"; }
                 else if (stat.isFIFO()) { type = "fifo"; }
+                else if (stat.isDirectory()) {
+                    type = "directory";
+                    if (node.recursive) {
+                        notifications.add([path]);
+                        notifications.add(getAllDirs(path));
+                    }
+                }
                 else { type = "n/a"; }
             }
             msg.type = type;