Fixed propagation of device updates on automation scene application

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/controller/ButtonDimmerController.java

@@ -67,7 +67,7 @@ public class ButtonDimmerController
                 break;
         }
 
-        deviceService.saveAllAsOwner(buttonDimmer.getOutputs(), principal.getName(), false);
+        deviceService.saveAllAsOwner(buttonDimmer.getOutputs(), principal.getName());
 
         return buttonDimmer.getOutputs();
     }

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/controller/InputDeviceConnectionController.java

@@ -91,7 +91,7 @@ public abstract class InputDeviceConnectionController<
             connector.connect(pair.input, o, true);
         }
 
-        deviceService.saveAllAsOwner(pair.outputs, username, false);
+        deviceService.saveAllAsOwner(pair.outputs, username);
         return pair.input.getOutputs();
     }
 
@@ -111,7 +111,7 @@ public abstract class InputDeviceConnectionController<
             connector.connect(pair.input, o, false);
         }
 
-        deviceService.saveAllAsOwner(pair.outputs, username, false);
+        deviceService.saveAllAsOwner(pair.outputs, username);
         return pair.input.getOutputs();
     }
 

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/controller/KnobDimmerController.java

@@ -54,7 +54,7 @@ public class KnobDimmerController extends InputDeviceConnectionController<KnobDi
                         .orElseThrow(NotFoundException::new);
 
         dimmer.setLightIntensity(bd.getIntensity());
-        deviceService.saveAllAsOwner(dimmer.getOutputs(), principal.getName(), false);
+        deviceService.saveAllAsOwner(dimmer.getOutputs(), principal.getName());
 
         return dimmer.getOutputs();
     }

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/controller/SceneController.java

@@ -68,7 +68,7 @@ public class SceneController {
                         .findByIdAndUsername(id, principal.getName())
                         .orElseThrow(NotFoundException::new);
 
-        return sceneService.apply(newScene, principal.getName());
+        return sceneService.apply(newScene, principal.getName(), false);
     }
 
     @PutMapping("/{id}")

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/controller/SwitchController.java

@@ -75,7 +75,7 @@ public class SwitchController extends InputDeviceConnectionController<Switch, Sw
         }
 
         deviceService.saveAsOwner(s, principal.getName());
-        return deviceService.saveAllAsOwner(s.getOutputs(), principal.getName(), false);
+        return deviceService.saveAllAsOwner(s.getOutputs(), principal.getName());
     }
 
     @DeleteMapping("/{id}")

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/DeviceService.java

@@ -57,7 +57,7 @@ public class DeviceService {
                                 sceneRepository
                                         .findById(t.getSceneId())
                                         .orElseThrow(IllegalStateException::new))
-                .forEach((s) -> sceneService.apply(s, username));
+                .forEach((s) -> sceneService.apply(s, username, true));
     }
 
     public List<Device> findAll(Long hostId, String username) throws NotFoundException {
@@ -145,7 +145,15 @@ public class DeviceService {
         return device;
     }
 
-    private void propagateUpdateAsOwner(Device device, String username) {
+    /**
+     * Propagates the update through the socket assuming that the user that modified the device is
+     * the owner of that device
+     *
+     * @param device the updated device
+     * @param username the username of the owner of that device
+     * @param causedByTrigger if true, send the update to the owner as well
+     */
+    private void propagateUpdateAsOwner(Device device, String username, boolean causedByTrigger) {
         final User user = userRepository.findByUsername(username);
         final Set<User> guests = user.getGuests();
         // make sure we're broadcasting from host
@@ -155,13 +163,33 @@ public class DeviceService {
             // broadcast to endpoint the object device, with receiving user set to guest
             endpoint.queueDeviceUpdate(device, guest);
         }
+
+        if (causedByTrigger) {
+            endpoint.queueDeviceUpdate(device, user);
+        }
     }
 
+    /**
+     * Saves all the devices given in devices assuming that the owner updated them in one way or
+     * another. Takes care of the appropriate websocket updates and trigger checking as well. No
+     * checking is done to verify that the user whose username is given is in fact the owner of
+     * these devices
+     *
+     * @param devices the list of devices to save
+     * @param username the username of the owner of these devices
+     * @param fromScene true if the update comes from the a scene application side effect. Disables
+     *     trigger checking to avoid recursive invocations of automations
+     * @param fromTrigger true if the update comes from a scene application executed by an
+     *     automation. Propagates updated through socket to owner as well. No effect if fromScene is
+     *     false.
+     * @param <T> the type of device contained in the list
+     * @return the updated list of devices, ready to be fed to GSON
+     */
     public <T extends Device> List<T> saveAllAsOwner(
-            Iterable<T> devices, String username, boolean fromScene) {
+            Iterable<T> devices, String username, boolean fromScene, boolean fromTrigger) {
         devices.forEach(d -> renameIfDuplicate(d, username));
         devices = deviceRepository.saveAll(devices);
-        devices.forEach((d) -> propagateUpdateAsOwner(d, username));
+        devices.forEach((d) -> propagateUpdateAsOwner(d, username, fromScene && fromTrigger));
 
         if (!fromScene) {
             devices.forEach((d) -> triggerTriggers(d, username));
@@ -170,20 +198,18 @@ public class DeviceService {
         return toList(devices);
     }
 
-    public <T extends Device> T saveAsOwner(T device, String username, boolean fromScene) {
+    public <T extends Device> List<T> saveAllAsOwner(Iterable<T> devices, String username) {
-        renameIfDuplicate(device, username);
+        return saveAllAsOwner(devices, username, false, false);
-        device = deviceRepository.save(device);
-        propagateUpdateAsOwner(device, username);
-
-        if (!fromScene) {
-            triggerTriggers(device, username);
-        }
-
-        return device;
     }
 
     public <T extends Device> T saveAsOwner(T device, String username) {
-        return saveAsOwner(device, username, false);
+        renameIfDuplicate(device, username);
+        device = deviceRepository.save(device);
+        propagateUpdateAsOwner(device, username, false);
+
+        triggerTriggers(device, username);
+
+        return device;
     }
 
     public void delete(Long id, String username) throws NotFoundException {
@@ -193,6 +219,6 @@ public class DeviceService {
                         .orElseThrow(NotFoundException::new);
         deviceRepository.delete(device);
 
-        propagateUpdateAsOwner(device, username);
+        propagateUpdateAsOwner(device, username, false);
     }
 }

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/service/SceneService.java

@@ -15,14 +15,14 @@ public class SceneService {
     @Autowired private DeviceRepository<Device> deviceRepository;
     @Autowired private DeviceService deviceService;
 
-    public List<Device> apply(Scene newScene, String username) {
+    public List<Device> apply(Scene newScene, String username, boolean fromTrigger) {
         final List<Device> updated = new ArrayList<>();
 
         for (final State<?> s : newScene.getStates()) {
             s.apply();
             updated.add(s.getDevice());
         }
-        deviceService.saveAllAsOwner(updated, username, true);
+        deviceService.saveAllAsOwner(updated, username, true, fromTrigger);
         deviceService.populateComputedFields(updated);
         return updated;
     }