WIP on error fixing for sonarqube code smells and vulnerabilities check

build.gradle

@@ -2,6 +2,7 @@ plugins {
 	id 'org.springframework.boot' version '2.2.4.RELEASE'
 	id 'io.spring.dependency-management' version '1.0.9.RELEASE'
 	id "de.aaschmid.cpd" version "3.1"
+	id "org.sonarqube" version "2.7"
 	id 'java'
 }
 group = 'ch.usi.inf.sa4.sanmarinoes'
@@ -49,4 +50,4 @@ gradle.projectsEvaluated {
 
 test {
 	useJUnitPlatform()
-}
+}

gradle.properties

@@ -0,0 +1,4 @@
+systemProp.sonar.host.url=https://lab.si.usi.ch:9000
+systemProp.sonar.login=871fdfcb09345b1841f1730596ac32aacf3a86fb
+systemProp.sonar.projectKey=SMASmarthutBackend
+systemProp.sonar.scm.disabled=true

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/config/EmailConfigurationService.java

@@ -46,67 +46,67 @@ public class EmailConfigurationService {
 
     @NotNull private String registrationRedirect;
 
-    public String getRegistrationSubject() {
+    public synchronized String getRegistrationSubject() {
         return registrationSubject;
     }
 
-    public void setRegistrationSubject(String registrationSubject) {
+    public synchronized void setRegistrationSubject(String registrationSubject) {
         this.registrationSubject = registrationSubject;
     }
 
-    public String getRegistration() {
+    public synchronized String getRegistration() {
         return registration;
     }
 
-    public void setRegistration(String registration) {
+    public synchronized void setRegistration(String registration) {
         this.registration = registration;
     }
 
-    public String getRegistrationPath() {
+    public synchronized String getRegistrationPath() {
         return registrationPath;
     }
 
-    public void setRegistrationPath(String registrationPath) {
+    public synchronized void setRegistrationPath(String registrationPath) {
         this.registrationPath = registrationPath;
     }
 
-    public String getResetPasswordSubject() {
+    public synchronized String getResetPasswordSubject() {
         return resetPasswordSubject;
     }
 
-    public void setResetPasswordSubject(String resetPasswordSubject) {
+    public synchronized void setResetPasswordSubject(String resetPasswordSubject) {
         this.resetPasswordSubject = resetPasswordSubject;
     }
 
-    public String getResetPassword() {
+    public synchronized String getResetPassword() {
         return resetPassword;
     }
 
-    public void setResetPassword(String resetPassword) {
+    public synchronized void setResetPassword(String resetPassword) {
         this.resetPassword = resetPassword;
     }
 
-    public String getResetPasswordPath() {
+    public synchronized String getResetPasswordPath() {
         return resetPasswordPath;
     }
 
-    public void setResetPasswordPath(String resetPasswordPath) {
+    public synchronized void setResetPasswordPath(String resetPasswordPath) {
         this.resetPasswordPath = resetPasswordPath;
     }
 
-    public String getResetPasswordRedirect() {
+    public synchronized String getResetPasswordRedirect() {
         return resetPasswordRedirect;
     }
 
-    public void setResetPasswordRedirect(String resetPasswordRedirect) {
+    public synchronized void setResetPasswordRedirect(String resetPasswordRedirect) {
         this.resetPasswordRedirect = resetPasswordRedirect;
     }
 
-    public String getRegistrationRedirect() {
+    public synchronized String getRegistrationRedirect() {
         return registrationRedirect;
     }
 
-    public void setRegistrationRedirect(String registrationRedirect) {
+    public synchronized void setRegistrationRedirect(String registrationRedirect) {
         this.registrationRedirect = registrationRedirect;
     }
 }

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/config/RuntimeTypeAdapterFactory.java

@@ -233,9 +233,9 @@ public final class RuntimeTypeAdapterFactory<T> implements TypeAdapterFactory {
         }
 
         final Map<String, TypeAdapter<?>> labelToDelegate =
-                new LinkedHashMap<String, TypeAdapter<?>>();
+                new LinkedHashMap<String, TypeAdapter<?>>(labelToSubtype.size());
         final Map<Class<?>, TypeAdapter<?>> subtypeToDelegate =
-                new LinkedHashMap<Class<?>, TypeAdapter<?>>();
+                new LinkedHashMap<Class<?>, TypeAdapter<?>>(labelToSubtype.size());
         for (Map.Entry<String, Class<?>> entry : labelToSubtype.entrySet()) {
             TypeAdapter<?> delegate =
                     gson.getDelegateAdapter(this, TypeToken.get(entry.getValue()));
@@ -245,7 +245,7 @@ public final class RuntimeTypeAdapterFactory<T> implements TypeAdapterFactory {
 
         return new TypeAdapter<R>() {
             @Override
-            public R read(JsonReader in) throws IOException {
+            public R read(JsonReader in) {
                 JsonElement jsonElement = Streams.parse(in);
                 JsonElement labelJsonElement;
                 if (maintainType) {

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

@@ -6,16 +6,14 @@ import ch.usi.inf.sa4.sanmarinoes.smarthut.dto.JWTResponse;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.error.UnauthorizedException;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.error.UserNotFoundException;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.models.*;
+import ch.usi.inf.sa4.sanmarinoes.smarthut.service.JWTUserDetailsService;
 import java.security.Principal;
 import javax.validation.Valid;
-
-import ch.usi.inf.sa4.sanmarinoes.smarthut.service.JWTUserDetailsService;
 import org.springframework.security.authentication.AuthenticationManager;
 import org.springframework.security.authentication.BadCredentialsException;
 import org.springframework.security.authentication.DisabledException;
 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
 import org.springframework.security.core.userdetails.UserDetails;
-import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
 import org.springframework.web.bind.annotation.*;
 
 @RestController
@@ -30,8 +28,6 @@ public class AuthenticationController {
 
     private final JWTUserDetailsService userDetailsService;
 
-    private BCryptPasswordEncoder encoder = new BCryptPasswordEncoder();
-
     public AuthenticationController(
             AuthenticationManager authenticationManager,
             UserRepository userRepository,
@@ -82,9 +78,9 @@ public class AuthenticationController {
             authenticationManager.authenticate(
                     new UsernamePasswordAuthenticationToken(username, password));
         } catch (DisabledException e) {
-            throw new UnauthorizedException(true);
+            throw new UnauthorizedException(true, e);
         } catch (BadCredentialsException e) {
-            throw new UnauthorizedException(false);
+            throw new UnauthorizedException(false, e);
         }
     }
 }

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

@@ -33,6 +33,22 @@ public abstract class InputDeviceConnectionController<
             this.input = input;
             this.outputs = outputs;
         }
+
+        public I getInput() {
+            return input;
+        }
+
+        public List<O> getOutputs() {
+            return outputs;
+        }
+    }
+
+    protected DeviceRepository<I> getInputRepository() {
+        return inputRepository;
+    }
+
+    protected DeviceRepository<O> getOutputReposiory() {
+        return outputReposiory;
     }
 
     @Autowired private DeviceService deviceService;
@@ -65,7 +81,7 @@ public abstract class InputDeviceConnectionController<
                 inputRepository
                         .findByIdAndUsername(inputId, username)
                         .orElseThrow(() -> new NotFoundException("input device"));
-        final List<O> outputDevices = new ArrayList<>();
+        final List<O> outputDevices = new ArrayList<>(outputs.size());
         for (final Long outputId : outputs) {
             outputDevices.add(
                     outputReposiory
@@ -87,12 +103,12 @@ public abstract class InputDeviceConnectionController<
             Long inputId, List<Long> outputs, String username) throws NotFoundException {
         final Connection pair = checkConnectionIDs(inputId, outputs, username);
 
-        for (final O o : pair.outputs) {
-            connector.connect(pair.input, o, true);
+        for (final O o : pair.getOutputs()) {
+            connector.connect(pair.getInput(), o, true);
         }
 
-        deviceService.saveAllAsOwner(pair.outputs, username);
-        return pair.input.getOutputs();
+        deviceService.saveAllAsOwner(pair.getOutputs(), username);
+        return pair.getInput().getOutputs();
     }
 
     /**
@@ -107,12 +123,12 @@ public abstract class InputDeviceConnectionController<
             Long inputId, List<Long> outputs, String username) throws NotFoundException {
         final Connection pair = checkConnectionIDs(inputId, outputs, username);
 
-        for (final O o : pair.outputs) {
-            connector.connect(pair.input, o, false);
+        for (final O o : pair.getOutputs()) {
+            connector.connect(pair.getInput(), o, false);
         }
 
-        deviceService.saveAllAsOwner(pair.outputs, username);
-        return pair.input.getOutputs();
+        deviceService.saveAllAsOwner(pair.getOutputs(), username);
+        return pair.getInput().getOutputs();
     }
 
     @PostMapping("/{id}/lights")

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

@@ -17,14 +17,17 @@ import org.springframework.web.bind.annotation.*;
 @RequestMapping("/knobDimmer")
 public class KnobDimmerController extends InputDeviceConnectionController<KnobDimmer, Dimmable> {
 
-    @Autowired private DeviceService deviceService;
-    @Autowired private KnobDimmerRepository knobDimmerRepository;
+    private final DeviceService deviceService;
+    private final KnobDimmerRepository knobDimmerRepository;
 
     @Autowired
     protected KnobDimmerController(
-            KnobDimmerRepository inputRepository, DimmableRepository<Dimmable> outputRepository) {
+            KnobDimmerRepository inputRepository,
+            DimmableRepository<Dimmable> outputRepository,
+            DeviceService deviceService) {
         super(inputRepository, outputRepository, Dimmable.KNOB_DIMMER_DIMMABLE_CONNECTOR);
         this.knobDimmerRepository = inputRepository;
+        this.deviceService = deviceService;
     }
 
     @GetMapping("/{id}")

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

@@ -18,7 +18,6 @@ import org.springframework.web.bind.annotation.*;
 public class SwitchController extends InputDeviceConnectionController<Switch, Switchable> {
 
     private SwitchRepository switchRepository;
-    private SwitchableRepository<Switchable> switchableRepository;
     private DeviceService deviceService;
 
     /**

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

@@ -36,8 +36,7 @@ public class ThermostatController {
         newT = thermostatRepository.save(newT);
 
         newT.setOn(t.isTurnOn());
-        newT = deviceService.saveAsOwner(newT, principal.getName());
-        return newT;
+        return deviceService.saveAsOwner(newT, principal.getName());
     }
 
     @PostMapping

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

@@ -2,7 +2,6 @@ package ch.usi.inf.sa4.sanmarinoes.smarthut.controller;
 
 import ch.usi.inf.sa4.sanmarinoes.smarthut.config.EmailConfigurationService;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.dto.InitPasswordResetRequest;
-import ch.usi.inf.sa4.sanmarinoes.smarthut.dto.OkResponse;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.dto.PasswordResetRequest;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.dto.UserRegistrationRequest;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.error.DuplicateRegistrationException;
@@ -78,7 +77,7 @@ public class UserAccountController {
      * @throws DuplicateRegistrationException if a user exists with same email or username
      */
     @PostMapping
-    public OkResponse registerUser(@Valid @RequestBody UserRegistrationRequest registrationData)
+    public void registerUser(@Valid @RequestBody UserRegistrationRequest registrationData)
             throws DuplicateRegistrationException {
         final User existingEmailUser =
                 userRepository.findByEmailIgnoreCase(registrationData.getEmail());
@@ -112,8 +111,6 @@ public class UserAccountController {
             confirmationTokenRepository.save(token);
 
             sendEmail(toSave.getEmail(), token, true);
-
-            return new OkResponse();
         }
     }
 
@@ -125,7 +122,7 @@ public class UserAccountController {
      * @throws UserNotFoundException if given email does not belong to any user
      */
     @PostMapping("/init-reset-password")
-    public OkResponse initResetPassword(@Valid @RequestBody InitPasswordResetRequest resetRequest)
+    public void initResetPassword(@Valid @RequestBody InitPasswordResetRequest resetRequest)
             throws UserNotFoundException {
         final User toReset = userRepository.findByEmailIgnoreCase(resetRequest.getEmail());
 
@@ -148,8 +145,6 @@ public class UserAccountController {
         confirmationTokenRepository.save(token);
 
         sendEmail(toReset.getEmail(), token, false);
-
-        return new OkResponse();
     }
 
     /**
@@ -160,7 +155,7 @@ public class UserAccountController {
      * @throws EmailTokenNotFoundException if given token is not a valid token for password reset
      */
     @PutMapping("/reset-password")
-    public OkResponse resetPassword(
+    public void resetPassword(
             @Valid @RequestBody PasswordResetRequest resetRequest,
             final HttpServletResponse response)
             throws EmailTokenNotFoundException, IOException {
@@ -178,8 +173,6 @@ public class UserAccountController {
 
         // Delete token to prevent further password changes
         confirmationTokenRepository.delete(token);
-
-        return new OkResponse();
     }
 
     /**

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/dto/OkResponse.java

@@ -1,6 +0,0 @@
-package ch.usi.inf.sa4.sanmarinoes.smarthut.dto;
-
-/** A dummy DTO to return when there is no data to return */
-public class OkResponse {
-    private boolean success = true;
-}

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/dto/UserResponse.java

@@ -16,4 +16,16 @@ public class UserResponse {
         us.username = u.getUsername();
         return us;
     }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public String getName() {
+        return name;
+    }
 }

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/error/UnauthorizedException.java

@@ -7,8 +7,8 @@ import org.springframework.web.bind.annotation.ResponseStatus;
 public class UnauthorizedException extends Exception {
     private final boolean isUserDisabled;
 
-    public UnauthorizedException(boolean isDisabled) {
-        super("Access denied: " + (isDisabled ? "user is disabled" : "wrong credentials"));
+    public UnauthorizedException(boolean isDisabled, Throwable cause) {
+        super("Access denied: " + (isDisabled ? "user is disabled" : "wrong credentials"), cause);
         this.isUserDisabled = isDisabled;
     }
 

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/ConfirmationToken.java

@@ -32,7 +32,7 @@ public class ConfirmationToken {
     private User user;
 
     @Column(nullable = false)
-    private Boolean resetPassword;
+    private boolean resetPassword;
 
     public ConfirmationToken(User user) {
         this.user = user;
@@ -76,11 +76,11 @@ public class ConfirmationToken {
         this.user = user;
     }
 
-    public Boolean getResetPassword() {
+    public boolean getResetPassword() {
         return resetPassword;
     }
 
-    public void setResetPassword(Boolean resetPassword) {
+    public void setResetPassword(boolean resetPassword) {
         this.resetPassword = resetPassword;
     }
 }

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Sensor.java

@@ -15,9 +15,9 @@ public class Sensor extends InputDevice implements RangeTriggerable {
 
     public static final Map<SensorType, BigDecimal> TYPICAL_VALUES =
             Map.of(
-                    SensorType.TEMPERATURE, new BigDecimal(17.0),
-                    SensorType.HUMIDITY, new BigDecimal(40.0),
-                    SensorType.LIGHT, new BigDecimal(1000));
+                    SensorType.TEMPERATURE, BigDecimal.valueOf(17.0),
+                    SensorType.HUMIDITY, BigDecimal.valueOf(40.0),
+                    SensorType.LIGHT, BigDecimal.valueOf(1000));
 
     @Override
     public double readTriggerState() {

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/Thermostat.java

@@ -6,11 +6,9 @@ import javax.persistence.Column;
 import javax.persistence.Entity;
 import javax.persistence.Transient;
 import javax.validation.constraints.NotNull;
-import org.springframework.stereotype.Component;
 
 /** A thermostat capable of controlling cooling and heating. */
 @Entity
-@Component
 public class Thermostat extends Switchable implements BooleanTriggerable {
 
     @Override

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/models/User.java

@@ -56,7 +56,7 @@ public class User {
 
     @Column(nullable = false)
     @GsonExclude
-    private Boolean isEnabled = false;
+    private boolean isEnabled = false;
 
     public Long getId() {
         return id;
@@ -98,11 +98,11 @@ public class User {
         this.password = password;
     }
 
-    public Boolean getEnabled() {
+    public boolean getEnabled() {
         return isEnabled;
     }
 
-    public void setEnabled(Boolean enabled) {
+    public void setEnabled(boolean enabled) {
         isEnabled = enabled;
     }
 
@@ -162,16 +162,17 @@ public class User {
         if (this == o) return true;
         if (o == null || getClass() != o.getClass()) return false;
         User user = (User) o;
-        return id.equals(user.id)
-                && name.equals(user.name)
-                && username.equals(user.username)
-                && password.equals(user.password)
-                && email.equals(user.email)
-                && isEnabled.equals(user.isEnabled);
+        return cameraEnabled == user.cameraEnabled
+                && isEnabled == user.isEnabled
+                && Objects.equals(id, user.id)
+                && Objects.equals(name, user.name)
+                && Objects.equals(username, user.username)
+                && Objects.equals(password, user.password)
+                && Objects.equals(email, user.email);
     }
 
     @Override
     public int hashCode() {
-        return Objects.hash(id, name, username, password, email, isEnabled);
+        return Objects.hash(id, name, username, password, email, isEnabled, cameraEnabled);
     }
 }

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

@@ -0,0 +1,20 @@
+package ch.usi.inf.sa4.sanmarinoes.smarthut.service;
+
+import ch.usi.inf.sa4.sanmarinoes.smarthut.models.Device;
+import ch.usi.inf.sa4.sanmarinoes.smarthut.models.Thermostat;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class DevicePopulationService {
+
+    @Autowired private ThermostatService thermostatService;
+
+    public void populateComputedFields(Iterable<Device> devices) {
+        for (Device d : devices) {
+            if (d instanceof Thermostat) {
+                thermostatService.populateMeasuredTemperature((Thermostat) d);
+            }
+        }
+    }
+}

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

@@ -0,0 +1,141 @@
+package ch.usi.inf.sa4.sanmarinoes.smarthut.service;
+
+import static ch.usi.inf.sa4.sanmarinoes.smarthut.utils.Utils.toList;
+
+import ch.usi.inf.sa4.sanmarinoes.smarthut.error.NotFoundException;
+import ch.usi.inf.sa4.sanmarinoes.smarthut.models.*;
+import ch.usi.inf.sa4.sanmarinoes.smarthut.socket.SensorSocketEndpoint;
+import java.util.List;
+import java.util.Set;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class DevicePropagationService {
+
+    @Autowired private SensorSocketEndpoint endpoint;
+    @Autowired private EagerUserRepository userRepository;
+    @Autowired private DeviceRepository<Device> deviceRepository;
+
+    void propagateUpdateAsGuest(Device device, User host, User guest) {
+        final Set<User> guests = Set.copyOf(host.getGuests());
+
+        // We're telling the host that a guest has modified a device. Therefore, fromGuest becomes
+        // true.
+        // broadcast device update to host
+        endpoint.queueDeviceUpdate(device, host, true, null, false);
+
+        // We're telling all guests that a higher entity has issued a device update. Therefore,
+        // fromHost becomes true.
+        for (final User aGuest : guests) {
+            if (aGuest.equals(guest)) {
+                continue;
+            }
+            // enqueue all device updates for all other guests
+            endpoint.queueDeviceUpdate(device, aGuest, false, host.getId(), false);
+        }
+    }
+
+    void saveAllAsGuestSceneApplication(List<Device> devices, String guestUsername, Long hostId) {
+        final User guest = userRepository.findByUsername(guestUsername);
+        final User host = userRepository.findById(hostId).orElseThrow(IllegalStateException::new);
+        deviceRepository.saveAll(devices);
+        devices.forEach(d -> this.propagateUpdateAsGuest(d, host, guest));
+    }
+
+    void renameIfDuplicate(Device toCreate, String username) {
+        while (deviceRepository.findDuplicates(toCreate.getName(), username)
+                        - (toCreate.getId() <= 0 ? 0 : 1)
+                > 0) {
+            toCreate.setName(toCreate.getName() + " (new)");
+        }
+    }
+
+    public <T extends Device> T saveAsGuest(T device, String guestUsername, Long hostId)
+            throws NotFoundException {
+        final User currentUser = userRepository.findByUsername(guestUsername);
+        final User host = userRepository.findById(hostId).orElseThrow(NotFoundException::new);
+        if (!host.getGuests().contains(currentUser)) throw new NotFoundException();
+        renameIfDuplicate(device, host.getUsername());
+
+        device = deviceRepository.save(device);
+        propagateUpdateAsGuest(device, host, currentUser);
+        return device;
+    }
+
+    /**
+     * 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, boolean fromTrigger) {
+        devices.forEach(d -> renameIfDuplicate(d, username));
+        devices = deviceRepository.saveAll(devices);
+        devices.forEach((d) -> propagateUpdateAsOwner(d, username, fromScene && fromTrigger));
+
+        return toList(devices);
+    }
+
+    public <T extends Device> List<T> saveAllAsOwner(Iterable<T> devices, String username) {
+        return saveAllAsOwner(devices, username, false, false);
+    }
+
+    public <T extends Device> T saveAsOwner(T device, String username) {
+        renameIfDuplicate(device, username);
+        device = deviceRepository.save(device);
+        propagateUpdateAsOwner(device, username, false);
+
+        return device;
+    }
+
+    public void deleteByIdAsOwner(Long id, String username) throws NotFoundException {
+        Device d =
+                deviceRepository
+                        .findByIdAndUsername(id, username)
+                        .orElseThrow(NotFoundException::new);
+
+        final User user = userRepository.findByUsername(username);
+        final Set<User> guests = user.getGuests();
+        // make sure we're broadcasting from host
+        for (final User guest : guests) {
+            // broadcast to endpoint the object device, with receiving user set to guest
+            endpoint.queueDeviceUpdate(d, guest, false, user.getId(), true);
+        }
+
+        deviceRepository.delete(d);
+    }
+
+    /**
+     * 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
+        for (final User guest : guests) {
+            // broadcast to endpoint the object device, with receiving user set to guest
+            endpoint.queueDeviceUpdate(device, guest, false, user.getId(), false);
+        }
+
+        if (causedByTrigger) {
+            endpoint.queueDeviceUpdate(device, user, false, user.getId(), false);
+        }
+    }
+}

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

@@ -4,11 +4,9 @@ import static ch.usi.inf.sa4.sanmarinoes.smarthut.utils.Utils.toList;
 
 import ch.usi.inf.sa4.sanmarinoes.smarthut.error.NotFoundException;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.models.*;
-import ch.usi.inf.sa4.sanmarinoes.smarthut.socket.SensorSocketEndpoint;
 import java.util.Collection;
 import java.util.Comparator;
 import java.util.List;
-import java.util.Set;
 import java.util.stream.Collectors;
 import java.util.stream.StreamSupport;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -17,28 +15,42 @@ import org.springframework.stereotype.Component;
 @Component
 public class DeviceService {
 
-    @Autowired private DeviceRepository<Device> deviceRepository;
-    @Autowired private AutomationRepository automationRepository;
-    @Autowired private SceneRepository sceneRepository;
-    @Autowired private SceneService sceneService;
-    @Autowired private TriggerRepository<Trigger<? extends Device>> triggerRepository;
-    @Autowired private RoomRepository roomRepository;
-    @Autowired private EagerUserRepository userRepository;
-    @Autowired private SensorSocketEndpoint endpoint;
-    @Autowired private ThermostatService thermostatService;
+    private final DeviceRepository<Device> deviceRepository;
+    private final AutomationRepository automationRepository;
+    private final SceneRepository sceneRepository;
+    private final SceneService sceneService;
+    private final TriggerRepository<Trigger<? extends Device>> triggerRepository;
+    private final RoomRepository roomRepository;
+    private final EagerUserRepository userRepository;
+    private final DevicePopulationService devicePopulationService;
+    private final DevicePropagationService devicePropagationService;
+
+    @Autowired
+    public DeviceService(
+            DeviceRepository<Device> deviceRepository,
+            AutomationRepository automationRepository,
+            SceneRepository sceneRepository,
+            SceneService sceneService,
+            TriggerRepository<Trigger<? extends Device>> triggerRepository,
+            RoomRepository roomRepository,
+            EagerUserRepository userRepository,
+            DevicePopulationService devicePopulationService,
+            DevicePropagationService devicePropagationService) {
+        this.deviceRepository = deviceRepository;
+        this.automationRepository = automationRepository;
+        this.sceneRepository = sceneRepository;
+        this.sceneService = sceneService;
+        this.triggerRepository = triggerRepository;
+        this.roomRepository = roomRepository;
+        this.userRepository = userRepository;
+        this.devicePopulationService = devicePopulationService;
+        this.devicePropagationService = devicePropagationService;
+    }
 
     public void throwIfRoomNotOwned(Long roomId, String username) throws NotFoundException {
         roomRepository.findByIdAndUsername(roomId, username).orElseThrow(NotFoundException::new);
     }
 
-    private void renameIfDuplicate(Device toCreate, String username) {
-        while (deviceRepository.findDuplicates(toCreate.getName(), username)
-                        - (toCreate.getId() <= 0 ? 0 : 1)
-                > 0) {
-            toCreate.setName(toCreate.getName() + " (new)");
-        }
-    }
-
     private void triggerTriggers(Device device, final String username) {
 
         final long deviceId = device.getId();
@@ -66,122 +78,24 @@ public class DeviceService {
         return findAll(null, hostId, username);
     }
 
-    public List<Device> findAll(Long roomId, Long hostId, String username)
-            throws NotFoundException {
-        try {
-            Iterable<Device> devices;
-            User host = null;
-            if (hostId == null) {
-                if (roomId != null) {
-                    roomRepository
-                            .findByIdAndUsername(roomId, username)
-                            .orElseThrow(NotFoundException::new);
-                    devices = deviceRepository.findByRoomId(roomId);
-                } else {
-                    devices = deviceRepository.findAllByUsername(username);
-                }
-            } else {
-                final User guest = userRepository.findByUsername(username);
-                host = userRepository.findById(hostId).orElseThrow(NotFoundException::new);
-
-                if (!guest.getHosts().contains(host)) {
-                    throw new NotFoundException();
-                }
-
-                if (roomId != null) {
-                    Room r = roomRepository.findById(roomId).orElseThrow(NotFoundException::new);
-                    if (!r.getUserId().equals(hostId)) {
-                        throw new NotFoundException();
-                    }
-                    devices = deviceRepository.findByRoomId(roomId);
-                } else {
-                    devices = deviceRepository.findAllByUsername(host.getUsername());
-                }
-            }
-
-            populateComputedFields(devices);
-
-            if (host != null && !host.isCameraEnabled()) {
-                return StreamSupport.stream(devices.spliterator(), true)
-                        .filter(d -> !(d instanceof SecurityCamera))
-                        .collect(Collectors.toList());
-            } else {
-                return toList(devices);
-            }
-        } catch (NotFoundException e) {
-            e.printStackTrace();
-            throw e;
-        }
-    }
-
-    public void populateComputedFields(Iterable<Device> devices) {
-        for (Device d : devices) {
-            if (d instanceof Thermostat) {
-                thermostatService.populateMeasuredTemperature((Thermostat) d);
-            }
-        }
-    }
-
     public <T extends Device> T saveAsGuest(T device, String guestUsername, Long hostId)
             throws NotFoundException {
         final User currentUser = userRepository.findByUsername(guestUsername);
         final User host = userRepository.findById(hostId).orElseThrow(NotFoundException::new);
         if (!host.getGuests().contains(currentUser)) throw new NotFoundException();
-        renameIfDuplicate(device, host.getUsername());
+        devicePropagationService.renameIfDuplicate(device, host.getUsername());
 
         device = deviceRepository.save(device);
-        propagateUpdateAsGuest(device, host, currentUser);
+        devicePropagationService.propagateUpdateAsGuest(device, host, currentUser);
         return device;
     }
 
-    private void propagateUpdateAsGuest(Device device, User host, User guest) {
-        final Set<User> guests = Set.copyOf(host.getGuests());
-
-        // We're telling the host that a guest has modified a device. Therefore, fromGuest becomes
-        // true.
-        // broadcast device update to host
-        endpoint.queueDeviceUpdate(device, host, true, null, false);
-
-        // We're telling all guests that a higher entity has issued a device update. Therefore,
-        // fromHost becomes true.
-        for (final User aGuest : guests) {
-            if (aGuest.equals(guest)) {
-                continue;
-            }
-            // enqueue all device updates for all other guests
-            endpoint.queueDeviceUpdate(device, aGuest, false, host.getId(), false);
-        }
+    public void deleteByIdAsOwner(Long id, String username) throws NotFoundException {
+        devicePropagationService.deleteByIdAsOwner(id, username);
     }
 
-    List<Device> saveAllAsGuestSceneApplication(
-            List<Device> devices, String guestUsername, Long hostId) {
-        final User guest = userRepository.findByUsername(guestUsername);
-        final User host = userRepository.findById(hostId).orElseThrow(IllegalStateException::new);
-        deviceRepository.saveAll(devices);
-        devices.forEach(d -> this.propagateUpdateAsGuest(d, host, guest));
-        return devices;
-    }
-
-    /**
-     * 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
-        for (final User guest : guests) {
-            // broadcast to endpoint the object device, with receiving user set to guest
-            endpoint.queueDeviceUpdate(device, guest, false, user.getId(), false);
-        }
-
-        if (causedByTrigger) {
-            endpoint.queueDeviceUpdate(device, user, false, user.getId(), false);
-        }
+    public void populateComputedFields(Iterable<Device> devices) {
+        devicePopulationService.populateComputedFields(devices);
     }
 
     /**
@@ -202,15 +116,12 @@ public class DeviceService {
      */
     public <T extends Device> List<T> saveAllAsOwner(
             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, fromScene && fromTrigger));
-
+        List<T> toReturn =
+                devicePropagationService.saveAllAsOwner(devices, username, fromScene, fromTrigger);
         if (!fromScene) {
-            devices.forEach((d) -> triggerTriggers(d, username));
+            toReturn.forEach((d) -> this.triggerTriggers(d, username));
         }
-
-        return toList(devices);
+        return toReturn;
     }
 
     public <T extends Device> List<T> saveAllAsOwner(Iterable<T> devices, String username) {
@@ -218,29 +129,51 @@ public class DeviceService {
     }
 
     public <T extends Device> T saveAsOwner(T device, String username) {
-        renameIfDuplicate(device, username);
-        device = deviceRepository.save(device);
-        propagateUpdateAsOwner(device, username, false);
-
-        triggerTriggers(device, username);
-
+        T toReturn = devicePropagationService.saveAsOwner(device, username);
+        triggerTriggers(toReturn, username);
         return device;
     }
 
-    public void deleteByIdAsOwner(Long id, String username) throws NotFoundException {
-        Device d =
-                deviceRepository
-                        .findByIdAndUsername(id, username)
+    public List<Device> findAll(Long roomId, Long hostId, String username)
+            throws NotFoundException {
+        Iterable<Device> devices;
+        User host = null;
+        if (hostId == null) {
+            if (roomId != null) {
+                roomRepository
+                        .findByIdAndUsername(roomId, username)
                         .orElseThrow(NotFoundException::new);
+                devices = deviceRepository.findByRoomId(roomId);
+            } else {
+                devices = deviceRepository.findAllByUsername(username);
+            }
+        } else {
+            final User guest = userRepository.findByUsername(username);
+            host = userRepository.findById(hostId).orElseThrow(NotFoundException::new);
 
-        final User user = userRepository.findByUsername(username);
-        final Set<User> guests = user.getGuests();
-        // make sure we're broadcasting from host
-        for (final User guest : guests) {
-            // broadcast to endpoint the object device, with receiving user set to guest
-            endpoint.queueDeviceUpdate(d, guest, false, user.getId(), true);
+            if (!guest.getHosts().contains(host)) {
+                throw new NotFoundException();
+            }
+
+            if (roomId != null) {
+                Room r = roomRepository.findById(roomId).orElseThrow(NotFoundException::new);
+                if (!r.getUserId().equals(hostId)) {
+                    throw new NotFoundException();
+                }
+                devices = deviceRepository.findByRoomId(roomId);
+            } else {
+                devices = deviceRepository.findAllByUsername(host.getUsername());
+            }
         }
 
-        deviceRepository.delete(d);
+        devicePopulationService.populateComputedFields(devices);
+
+        if (host != null && !host.isCameraEnabled()) {
+            return StreamSupport.stream(devices.spliterator(), true)
+                    .filter(d -> !(d instanceof SecurityCamera))
+                    .collect(Collectors.toList());
+        } else {
+            return toList(devices);
+        }
     }
 }

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

@@ -10,30 +10,31 @@ import org.springframework.stereotype.Component;
 public class SceneService {
 
     @Autowired private DeviceRepository<Device> deviceRepository;
-    @Autowired private DeviceService deviceService;
+    @Autowired private DevicePopulationService devicePopulationService;
+    @Autowired private DevicePropagationService devicePropagationService;
     @Autowired private StateRepository<State<?>> stateRepository;
 
     private List<Device> copyStatesToDevices(Scene fromScene) {
-        final List<Device> updated = new ArrayList<>();
+        final List<Device> updated = new ArrayList<>(fromScene.getStates().size());
 
         for (final State<?> s : fromScene.getStates()) {
             s.apply();
             updated.add(s.getDevice());
         }
 
-        deviceService.populateComputedFields(updated);
+        devicePopulationService.populateComputedFields(updated);
         return updated;
     }
 
     public List<Device> apply(Scene newScene, String username, boolean fromTrigger) {
         List<Device> updated = copyStatesToDevices(newScene);
-        deviceService.saveAllAsOwner(updated, username, true, fromTrigger);
+        devicePropagationService.saveAllAsOwner(updated, username, true, fromTrigger);
         return updated;
     }
 
     public List<Device> applyAsGuest(Scene newScene, String username, Long hostId) {
         List<Device> updated = copyStatesToDevices(newScene);
-        deviceService.saveAllAsGuestSceneApplication(updated, username, hostId);
+        devicePropagationService.saveAllAsGuestSceneApplication(updated, username, hostId);
         return updated;
     }
 

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

@@ -16,7 +16,7 @@ public class ThermostatService {
 
     @Autowired private SensorSocketEndpoint endpoint;
 
-    @Autowired private DeviceService deviceService;
+    @Autowired private DevicePropagationService deviceService;
 
     @Autowired private ThermostatRepository thermostatRepository;
 

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/socket/SensorSocketEndpoint.java

@@ -5,7 +5,7 @@ import ch.usi.inf.sa4.sanmarinoes.smarthut.config.JWTTokenUtils;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.models.Device;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.models.User;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.models.UserRepository;
-import ch.usi.inf.sa4.sanmarinoes.smarthut.service.DeviceService;
+import ch.usi.inf.sa4.sanmarinoes.smarthut.service.DevicePopulationService;
 import com.google.common.collect.HashMultimap;
 import com.google.common.collect.Multimap;
 import com.google.common.collect.Multimaps;
@@ -20,15 +20,15 @@ import org.springframework.stereotype.Component;
 @Component
 public class SensorSocketEndpoint extends Endpoint {
 
-    private Gson gson = GsonConfig.socketGson();
+    private final Gson gson = GsonConfig.socketGson();
 
-    @Autowired private DeviceService deviceService;
+    @Autowired private DevicePopulationService deviceService;
 
-    private UserRepository userRepository;
+    private final UserRepository userRepository;
 
-    private JWTTokenUtils jwtTokenUtils;
+    private final JWTTokenUtils jwtTokenUtils;
 
-    private Multimap<User, Session> authorizedClients =
+    private final Multimap<User, Session> authorizedClients =
             Multimaps.synchronizedMultimap(HashMultimap.create());
 
     // messages are now stored as strings as a "hack" to capture and clone the state of the device,

src/test/java/ch/usi/inf/sa4/sanmarinoes/smarthut/AuthenticationTests.java

@@ -4,7 +4,6 @@ import static org.assertj.core.api.Assertions.assertThat;
 
 import ch.usi.inf.sa4.sanmarinoes.smarthut.dto.JWTRequest;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.dto.JWTResponse;
-import ch.usi.inf.sa4.sanmarinoes.smarthut.dto.OkResponse;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.dto.UserRegistrationRequest;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.error.DuplicateRegistrationException;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.error.UnauthorizedException;
@@ -42,9 +41,9 @@ public class AuthenticationTests extends SmartHutTest {
 
     @Override
     protected void setUp() {
-        final ResponseEntity<OkResponse> res =
+        final ResponseEntity<Object> res =
                 this.restTemplate.postForEntity(
-                        this.url("/register"), getDisabledUser(), OkResponse.class);
+                        this.url("/register"), getDisabledUser(), Object.class);
         assertThat(res.getStatusCode().equals(HttpStatus.OK));
 
         registerTestUser(restTemplate, userRepository, tokenRepository);
@@ -178,8 +177,8 @@ public class AuthenticationTests extends SmartHutTest {
         request.setEmail("smarthut.sm@example.com");
         request.setPassword("password");
 
-        final ResponseEntity<OkResponse> res =
-                this.restTemplate.postForEntity(url("/register"), request, OkResponse.class);
+        final ResponseEntity<Object> res =
+                this.restTemplate.postForEntity(url("/register"), request, Object.class);
         assertThat(res.getStatusCode().equals(HttpStatus.OK));
         assertThat(res.getBody() != null);
     }

src/test/java/ch/usi/inf/sa4/sanmarinoes/smarthut/SmartHutTest.java

@@ -2,7 +2,6 @@ package ch.usi.inf.sa4.sanmarinoes.smarthut;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
-import ch.usi.inf.sa4.sanmarinoes.smarthut.dto.OkResponse;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.dto.UserRegistrationRequest;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.models.ConfirmationToken;
 import ch.usi.inf.sa4.sanmarinoes.smarthut.models.ConfirmationTokenRepository;
@@ -40,8 +39,8 @@ public abstract class SmartHutTest {
             final TestRestTemplate restTemplate,
             final UserRepository userRepository,
             final ConfirmationTokenRepository tokenRepository) {
-        final ResponseEntity<OkResponse> res2 =
-                restTemplate.postForEntity(this.url("/register"), enabledUser, OkResponse.class);
+        final ResponseEntity<Object> res2 =
+                restTemplate.postForEntity(this.url("/register"), enabledUser, Object.class);
         assertThat(res2.getStatusCode().equals(HttpStatus.OK));
 
         final User persistedEnabledUser = userRepository.findByUsername("enabled");