process changes in configuration

core/src/main/groovy/com/muwire/core/Core.groovy

@@ -430,6 +430,7 @@ public class Core {
             register(DirectoryWatchedEvent.class, directoryWatcher)
             register(WatchedDirectoryConvertedEvent.class, directoryWatcher)
             register(DirectoryUnsharedEvent.class, directoryWatcher)
+            register(WatchedDirectoryConfigurationEvent.class, directoryWatcher)
         }
     }
 

core/src/main/groovy/com/muwire/core/files/DirectoryWatcher.groovy

@@ -15,6 +15,7 @@ import java.util.concurrent.ConcurrentHashMap
 import com.muwire.core.EventBus
 import com.muwire.core.MuWireSettings
 import com.muwire.core.SharedFile
+import com.muwire.core.files.directories.WatchedDirectoryConfigurationEvent
 import com.muwire.core.files.directories.WatchedDirectoryConvertedEvent
 import com.muwire.core.files.directories.WatchedDirectoryManager
 
@@ -80,6 +81,19 @@ class DirectoryWatcher {
         wk?.cancel()
     }
     
+    void onWatchedDirectoryConfigurationEvent(WatchedDirectoryConfigurationEvent e) {
+        if (watchService == null)
+            return // still converting
+        if (!e.autoWatch) {
+            WatchKey wk = watchedDirectories.remove(e.directory)
+            wk?.cancel()
+        } else if (!watchedDirectories.containsKey(e.directory)) {
+            Path path = e.directory.toPath()
+            def wk = path.register(watchService, kinds)
+            watchedDirectories.put(e.directory, wk)
+        } // else it was already watched
+    }
+    
     private void watch() {
         try {
             while(!shutdown) {

core/src/main/groovy/com/muwire/core/files/directories/WatchedDirectoryManager.groovy

@@ -61,7 +61,14 @@ class WatchedDirectoryManager {
             newDir.autoWatch = e.autoWatch
             persist(newDir)
         } else {
-            // TODO: update state and stuff
+            def wd = watchedDirs.get(e.directory)
+            if (wd == null) {
+                log.severe("got a configuration event for a non-watched directory ${e.directory}")
+                return
+            }
+            wd.autoWatch = e.autoWatch
+            wd.syncInterval = e.syncInterval
+            persist(wd)
         }
     }