Add mapping of vfs watch event types (#12)

src/adapters/vfs/system.js

@@ -155,20 +155,26 @@ module.exports = (core) => {
         .map(s => s.replace(/\{|\}/g, ''))
         .filter(s => segments[s].dynamic);
 
-      const handle = name => file => {
+      const handle = (action, type) => file => {
         const test = re.exec(file);
 
         if (test && test.length > 0) {
           const args = seg.reduce((res, k, i) => {
             return Object.assign({}, {[k]: test[i + 1]});
           }, {});
 
-          callback(args, test[test.length - 1], name);
+          callback(args, test[test.length - 1], action, type);
         }
       };
 
       const events = ['add', 'addDir', 'unlinkDir', 'unlink'];
-      events.forEach(name => watch.on(name, handle(name)));
+      events.forEach(action => {
+        const type = action.match(/^add/)
+          ? 'add'
+          : 'remove';
+
+        watch.on(action, handle(action, type));
+      });
 
       return watch;
     },

src/filesystem.js

@@ -250,7 +250,7 @@ class Filesystem {
    * @param {object} adapter The adapter
    */
   _watch(mountpoint, adapter) {
-    const watch = adapter.watch(mountpoint, (args, dir, type) => {
+    const watch = adapter.watch(mountpoint, (args, dir, action, type) => {
       const target = mountpoint.name + ':/' + dir;
       const keys = Object.keys(args);
       const filter = keys.length === 0
@@ -260,11 +260,13 @@ class Filesystem {
       this.core.emit('osjs/vfs:watch:change', {
         mountpoint,
         target,
+        action,
         type
       });
 
       this.core.broadcast('osjs/vfs:watch:change', [{
         path: target,
+        action,
         type
       }, args], filter);
     });