Storage - Use nullable reference types

Core - Fix build warnings

src/Artemis.Core/Models/Profile/Layer.cs

@@ -248,8 +248,8 @@ public sealed class Layer : RenderProfileElement
             typeof(PropertyGroupDescriptionAttribute)
         )!;
 
-        LayerEntity.GeneralPropertyGroup ??= new PropertyGroupEntity {Identifier = generalAttribute.Identifier};
+        LayerEntity.GeneralPropertyGroup ??= new PropertyGroupEntity {Identifier = generalAttribute.Identifier!};
-        LayerEntity.TransformPropertyGroup ??= new PropertyGroupEntity {Identifier = transformAttribute.Identifier};
+        LayerEntity.TransformPropertyGroup ??= new PropertyGroupEntity {Identifier = transformAttribute.Identifier!};
 
         General.Initialize(this, null, generalAttribute, LayerEntity.GeneralPropertyGroup);
         Transform.Initialize(this, null, transformAttribute, LayerEntity.TransformPropertyGroup);

src/Artemis.Core/Models/Profile/LayerPropertyGroup.cs

@@ -240,7 +240,8 @@ public abstract class LayerPropertyGroup : IDisposable
         foreach (LayerPropertyGroup layerPropertyGroup in LayerPropertyGroups)
         {
             layerPropertyGroup.ApplyToEntity();
-            PropertyGroupEntity.PropertyGroups.Add(layerPropertyGroup.PropertyGroupEntity);
+            if (layerPropertyGroup.PropertyGroupEntity != null)
+                PropertyGroupEntity.PropertyGroups.Add(layerPropertyGroup.PropertyGroupEntity);
         }
     }
 

src/Artemis.Core/Models/Surface/ArtemisDevice.cs

@@ -46,7 +46,7 @@ public class ArtemisDevice : CorePropertyChanged
         InputIdentifiers = new List<ArtemisDeviceInputIdentifier>();
         InputMappings = new Dictionary<ArtemisLed, ArtemisLed>();
         Categories = new HashSet<DeviceCategory>();
-        LayoutSelection = new LayoutSelection {Type = DefaultLayoutProvider.LayoutType};
+        LayoutSelection = new LayoutSelection {Type = DefaultLayoutProvider.LAYOUT_TYPE};
 
         RgbDevice.ColorCorrections.Clear();
         RgbDevice.ColorCorrections.Add(new ScaleColorCorrection(this));
@@ -75,7 +75,7 @@ public class ArtemisDevice : CorePropertyChanged
         InputIdentifiers = new List<ArtemisDeviceInputIdentifier>();
         InputMappings = new Dictionary<ArtemisLed, ArtemisLed>();
         Categories = new HashSet<DeviceCategory>();
-        LayoutSelection = new LayoutSelection {Type = DefaultLayoutProvider.LayoutType};
+        LayoutSelection = new LayoutSelection {Type = DefaultLayoutProvider.LAYOUT_TYPE};
 
         foreach (DeviceInputIdentifierEntity identifierEntity in DeviceEntity.InputIdentifiers)
             InputIdentifiers.Add(new ArtemisDeviceInputIdentifier(identifierEntity.InputProvider, identifierEntity.Identifier));
@@ -155,6 +155,9 @@ public class ArtemisDevice : CorePropertyChanged
     /// </summary>
     public HashSet<DeviceCategory> Categories { get; }
 
+    /// <summary>
+    ///     Gets the layout selection applied to this device
+    /// </summary>
     public LayoutSelection LayoutSelection { get; }
 
     /// <summary>

src/Artemis.Core/Models/Surface/Layout/ArtemisLayout.cs

@@ -57,6 +57,9 @@ public class ArtemisLayout
     /// </summary>
     public LayoutCustomDeviceData LayoutCustomDeviceData { get; private set; } = null!;
 
+    /// <summary>
+    ///     Gets a boolean indicating whether this layout is a default layout or not
+    /// </summary>
     public bool IsDefaultLayout { get; private set; }
 
     /// <summary>

src/Artemis.Core/Plugins/LayerBrushes/LayerBrushDescriptor.cs

@@ -65,7 +65,7 @@ public class LayerBrushDescriptor
         BaseLayerBrush brush = (BaseLayerBrush) Provider.Plugin.Resolve(LayerBrushType);
         brush.Layer = layer;
         brush.Descriptor = this;
-        brush.LayerBrushEntity = entity ?? new LayerBrushEntity {ProviderId = Provider.Id, BrushType = LayerBrushType.FullName};
+        brush.LayerBrushEntity = entity ?? new LayerBrushEntity {ProviderId = Provider.Id, BrushType = LayerBrushType.FullName ?? throw new InvalidOperationException()};
 
         brush.Initialize();
         return brush;

src/Artemis.Core/Plugins/LayerEffects/Internal/BaseLayerEffect.cs

@@ -231,7 +231,7 @@ public abstract class BaseLayerEffect : BreakableModel, IDisposable, IStorageMod
             return;
 
         LayerEffectEntity.ProviderId = Descriptor.Provider.Id;
-        LayerEffectEntity.EffectType = GetType().FullName;
+        LayerEffectEntity.EffectType = GetType().FullName ?? throw new InvalidOperationException();
         BaseProperties?.ApplyToEntity();
         LayerEffectEntity.PropertyGroup = BaseProperties?.PropertyGroupEntity;
     }

src/Artemis.Core/Plugins/Settings/PluginSettings.cs

@@ -41,7 +41,7 @@ public class PluginSettings
             if (_settingEntities.ContainsKey(name))
                 return (PluginSetting<T>) _settingEntities[name];
             // Try to find in database
-            PluginSettingEntity settingEntity = _pluginRepository.GetSettingByNameAndGuid(name, Plugin.Guid);
+            PluginSettingEntity? settingEntity = _pluginRepository.GetSettingByNameAndGuid(name, Plugin.Guid);
             // If not found, create a new one
             if (settingEntity == null)
             {

src/Artemis.Core/Providers/CustomPathLayoutProvider.cs

@@ -1,8 +1,14 @@
 namespace Artemis.Core.Providers;
 
+/// <summary>
+/// Represents a layout provider that loads a layout from a custom path.
+/// </summary>
 public class CustomPathLayoutProvider : ILayoutProvider
 {
-    public static string LayoutType = "CustomPath";
+    /// <summary>
+    /// The layout type of this layout provider.
+    /// </summary>
+    public const string LAYOUT_TYPE = "CustomPath";
 
     /// <inheritdoc />
     public ArtemisLayout? GetDeviceLayout(ArtemisDevice device)
@@ -21,7 +27,7 @@ public class CustomPathLayoutProvider : ILayoutProvider
     /// <inheritdoc />
     public bool IsMatch(ArtemisDevice device)
     {
-        return device.LayoutSelection.Type == LayoutType;
+        return device.LayoutSelection.Type == LAYOUT_TYPE;
     }
 
     /// <summary>
@@ -31,7 +37,7 @@ public class CustomPathLayoutProvider : ILayoutProvider
     /// <param name="path">The path to the custom layout.</param>
     public void ConfigureDevice(ArtemisDevice device, string? path)
     {
-        device.LayoutSelection.Type = LayoutType;
+        device.LayoutSelection.Type = LAYOUT_TYPE;
         device.LayoutSelection.Parameter = path;
     }
 }

src/Artemis.Core/Providers/DefaultLayoutProvider.cs

@@ -1,8 +1,14 @@
 namespace Artemis.Core.Providers;
 
+/// <summary>
+/// Represents a layout provider that loads a layout from the plugin and falls back to a default layout.
+/// </summary>
 public class DefaultLayoutProvider : ILayoutProvider
 {
-    public static string LayoutType = "Default";
+    /// <summary>
+    /// The layout type of this layout provider.
+    /// </summary>
+    public const string LAYOUT_TYPE = "Default";
 
     /// <inheritdoc />
     public ArtemisLayout? GetDeviceLayout(ArtemisDevice device)
@@ -26,7 +32,7 @@ public class DefaultLayoutProvider : ILayoutProvider
     /// <inheritdoc />
     public bool IsMatch(ArtemisDevice device)
     {
-        return device.LayoutSelection.Type == LayoutType;
+        return device.LayoutSelection.Type == LAYOUT_TYPE;
     }
 
     /// <summary>
@@ -35,7 +41,7 @@ public class DefaultLayoutProvider : ILayoutProvider
     /// <param name="device">The device to apply the provider to.</param>
     public void ConfigureDevice(ArtemisDevice device)
     {
-        device.LayoutSelection.Type = LayoutType;
+        device.LayoutSelection.Type = LAYOUT_TYPE;
         device.LayoutSelection.Parameter = null;
     }
 }

src/Artemis.Core/Providers/Interfaces/ILayoutProvider.cs

@@ -12,6 +12,17 @@ public interface ILayoutProvider
     /// <returns>The resulting layout if one was available; otherwise <see langword="null" />.</returns>
     ArtemisLayout? GetDeviceLayout(ArtemisDevice device);
 
+    /// <summary>
+    /// Applies the layout to the provided device.
+    /// </summary>
+    /// <param name="device">The device to apply to.</param>
+    /// <param name="layout">The layout to apply.</param>
     void ApplyLayout(ArtemisDevice device, ArtemisLayout layout);
+
+    /// <summary>
+    /// Determines whether the provided device is configured to use this layout provider.
+    /// </summary>
+    /// <param name="device">The device to check.</param>
+    /// <returns>A value indicating whether the provided device is configured to use this layout provider.</returns>
     bool IsMatch(ArtemisDevice device);
 }

src/Artemis.Core/Providers/NoneLayoutProvider.cs

@@ -1,8 +1,14 @@
 namespace Artemis.Core.Providers;
 
+/// <summary>
+/// Represents a layout provider that does not load a layout.
+/// </summary>
 public class NoneLayoutProvider : ILayoutProvider
 {
-    public static string LayoutType = "None";
+    /// <summary>
+    /// The layout type of this layout provider.
+    /// </summary>
+    public const string LAYOUT_TYPE = "None";
 
     /// <inheritdoc />
     public ArtemisLayout? GetDeviceLayout(ArtemisDevice device)
@@ -19,7 +25,7 @@ public class NoneLayoutProvider : ILayoutProvider
     /// <inheritdoc />
     public bool IsMatch(ArtemisDevice device)
     {
-        return device.LayoutSelection.Type == LayoutType;
+        return device.LayoutSelection.Type == LAYOUT_TYPE;
     }
 
     /// <summary>
@@ -28,7 +34,7 @@ public class NoneLayoutProvider : ILayoutProvider
     /// <param name="device">The device to apply the provider to.</param>
     public void ConfigureDevice(ArtemisDevice device)
     {
-        device.LayoutSelection.Type = LayoutType;
+        device.LayoutSelection.Type = LAYOUT_TYPE;
         device.LayoutSelection.Parameter = null;
     }
 }

src/Artemis.Core/Services/ProcessMonitoring/ProcessMonitor.cs

@@ -7,6 +7,9 @@ using System.Threading;
 
 namespace Artemis.Core.Services;
 
+/// <summary>
+/// Represents a monitor that efficiently keeps track of running processes.
+/// </summary>
 public static partial class ProcessMonitor
 {
     #region Properties & Fields
@@ -15,8 +18,11 @@ public static partial class ProcessMonitor
 
     private static Timer? _timer;
 
-    private static Dictionary<int, ProcessInfo> _processes = new();
+    private static readonly Dictionary<int, ProcessInfo> _processes = new();
 
+    /// <summary>
+    /// Gets an immutable array of the current processes.
+    /// </summary>
     public static ImmutableArray<ProcessInfo> Processes
     {
         get
@@ -25,9 +31,17 @@ public static partial class ProcessMonitor
                 return _processes.Values.ToImmutableArray();
         }
     }
+
+    /// <summary>
+    /// Gets the date time at which the last update took place.
+    /// </summary>
     public static DateTime LastUpdate { get; private set; }
 
     private static TimeSpan _updateInterval = TimeSpan.FromSeconds(1);
+
+    /// <summary>
+    /// Gets or sets the interval at which to update the list of processes.
+    /// </summary>
     public static TimeSpan UpdateInterval
     {
         get => _updateInterval;
@@ -40,6 +54,9 @@ public static partial class ProcessMonitor
         }
     }
 
+    /// <summary>
+    /// Gets a value indicating whether the monitoring has started.
+    /// </summary>
     public static bool IsStarted
     {
         get
@@ -53,7 +70,14 @@ public static partial class ProcessMonitor
 
     #region Events
 
+    /// <summary>
+    /// Occurs when a new process is started.
+    /// </summary>
     public static event EventHandler<ProcessEventArgs>? ProcessStarted;
+
+    /// <summary>
+    /// Occurs when a process is stopped.
+    /// </summary>
     public static event EventHandler<ProcessEventArgs>? ProcessStopped;
 
     #endregion
@@ -69,6 +93,9 @@ public static partial class ProcessMonitor
 
     #region Methods
 
+    /// <summary>
+    /// Starts monitoring processes.
+    /// </summary>
     public static void Start()
     {
         lock (LOCK)
@@ -87,6 +114,9 @@ public static partial class ProcessMonitor
         }
     }
 
+    /// <summary>
+    /// Stops monitoring processes.
+    /// </summary>
     public static void Stop()
     {
         lock (LOCK)
@@ -100,7 +130,7 @@ public static partial class ProcessMonitor
                 FreeBuffer();
         }
     }
-    
+
     /// <summary>
     ///     Returns whether the specified process is running
     /// </summary>
@@ -111,7 +141,7 @@ public static partial class ProcessMonitor
     {
         if (!IsStarted || (processName == null && processLocation == null))
             return false;
-        
+
         lock (LOCK)
         {
             return _processes.Values.Any(x => IsProcessRunning(x, processName, processLocation));
@@ -130,19 +160,19 @@ public static partial class ProcessMonitor
                 OnProcessStopped(info);
             }
     }
-        
+
     private static bool IsProcessRunning(ProcessInfo info, string? processName, string? processLocation)
     {
         if (processName != null && processLocation != null)
             return string.Equals(info.ProcessName, processName, StringComparison.InvariantCultureIgnoreCase) &&
                    string.Equals(Path.GetDirectoryName(info.Executable), processLocation, StringComparison.InvariantCultureIgnoreCase);
-        
+
         if (processName != null)
             return string.Equals(info.ProcessName, processName, StringComparison.InvariantCultureIgnoreCase);
-        
+
         if (processLocation != null)
             return string.Equals(Path.GetDirectoryName(info.Executable), processLocation, StringComparison.InvariantCultureIgnoreCase);
-        
+
         return false;
     }
 
@@ -152,7 +182,10 @@ public static partial class ProcessMonitor
         {
             ProcessStarted?.Invoke(null, new ProcessEventArgs(processInfo));
         }
-        catch { /* Subscribers are idiots! */ }
+        catch
+        {
+            /* Subscribers are idiots! */
+        }
     }
 
     private static void OnProcessStopped(ProcessInfo processInfo)
@@ -161,7 +194,10 @@ public static partial class ProcessMonitor
         {
             ProcessStopped?.Invoke(null, new ProcessEventArgs(processInfo));
         }
-        catch { /* Subscribers are idiots! */ }
+        catch
+        {
+            /* Subscribers are idiots! */
+        }
     }
 
     #endregion

src/Artemis.Core/Services/Registration/LayerBrushService.cs

@@ -42,6 +42,7 @@ internal class LayerBrushService : ILayerBrushService
             BrushType = "SolidBrush"
         });
 
+        defaultReference.Value ??= new LayerBrushReference();
         defaultReference.Value.LayerBrushProviderId ??= "Artemis.Plugins.LayerBrushes.Color.ColorBrushProvider-92a9d6ba";
         defaultReference.Value.BrushType ??= "SolidBrush";
         return LayerBrushStore.Get(defaultReference.Value.LayerBrushProviderId, defaultReference.Value.BrushType)?.LayerBrushDescriptor;

src/Artemis.Core/Services/Storage/ProfileService.cs

@@ -221,7 +221,7 @@ internal class ProfileService : IProfileService
             return profileConfiguration.Profile;
         }
 
-        ProfileEntity profileEntity;
+        ProfileEntity? profileEntity;
         try
         {
             profileEntity = _profileRepository.Get(profileConfiguration.Entity.ProfileId);
@@ -280,7 +280,7 @@ internal class ProfileService : IProfileService
     {
         DeactivateProfile(profileConfiguration);
 
-        ProfileEntity profileEntity = _profileRepository.Get(profileConfiguration.Entity.ProfileId);
+        ProfileEntity? profileEntity = _profileRepository.Get(profileConfiguration.Entity.ProfileId);
         if (profileEntity == null)
             return;
 
@@ -353,7 +353,7 @@ internal class ProfileService : IProfileService
 
         DeactivateProfile(profileConfiguration);
         SaveProfileCategory(profileConfiguration.Category);
-        ProfileEntity profileEntity = _profileRepository.Get(profileConfiguration.Entity.ProfileId);
+        ProfileEntity? profileEntity = _profileRepository.Get(profileConfiguration.Entity.ProfileId);
         if (profileEntity != null)
             _profileRepository.Remove(profileEntity);
 

src/Artemis.Core/Services/WebServer/Interfaces/IWebServerService.cs

@@ -100,7 +100,7 @@ public interface IWebServerService : IArtemisService
     /// <summary>
     ///     Removes an existing Web API controller and restarts the web server
     /// </summary>
-    /// <typeparam name="T">The type of Web API controller to remove</typeparam>
+    /// <param name="registration">The registration of the controller to remove.</param>
     void RemoveController(WebApiControllerRegistration registration);
 
     /// <summary>

src/Artemis.Storage/Artemis.Storage.csproj

@@ -1,12 +1,14 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
         <TargetFramework>net8.0</TargetFramework>
         <PreserveCompilationContext>false</PreserveCompilationContext>
         <Platforms>x64</Platforms>
+        <Nullable>enable</Nullable>
     </PropertyGroup>
 
     <ItemGroup>
         <PackageReference Include="LiteDB" Version="5.0.18" />
         <PackageReference Include="Serilog" Version="3.1.1" />
+        <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     </ItemGroup>
 </Project>

src/Artemis.Storage/Entities/General/QueuedActionEntity.cs

@@ -11,7 +11,7 @@ public class QueuedActionEntity
     }
 
     public Guid Id { get; set; }
-    public string Type { get; set; }
+    public string Type { get; set; } = string.Empty;
     public DateTimeOffset CreatedAt { get; set; }
 
     public Dictionary<string, object> Parameters { get; set; }

src/Artemis.Storage/Entities/General/ReleaseEntity.cs

@@ -6,6 +6,6 @@ public class ReleaseEntity
 {
     public Guid Id { get; set; }
 
-    public string Version { get; set; }
+    public string Version { get; set; } = string.Empty;
     public DateTimeOffset? InstalledAt { get; set; }
 }

src/Artemis.Storage/Entities/General/ScriptConfigurationEntity.cs

@@ -6,7 +6,7 @@ public class ScriptConfigurationEntity
 {
     public Guid Id { get; set; }
 
-    public string Name { get; set; }
+    public string Name { get; set; } = string.Empty;
-    public string ScriptingProviderId { get; set; }
+    public string ScriptingProviderId { get; set; } = string.Empty;
-    public string ScriptContent { get; set; }
+    public string? ScriptContent { get; set; }
 }

src/Artemis.Storage/Entities/Plugins/PluginEntity.cs

@@ -24,6 +24,6 @@ public class PluginEntity
 /// </summary>
 public class PluginFeatureEntity
 {
-    public string Type { get; set; }
+    public string Type { get; set; } = string.Empty;
     public bool IsEnabled { get; set; }
 }

src/Artemis.Storage/Entities/Plugins/PluginSettingEntity.cs

@@ -10,6 +10,6 @@ public class PluginSettingEntity
     public Guid Id { get; set; }
     public Guid PluginGuid { get; set; }
 
-    public string Name { get; set; }
+    public string Name { get; set; } = string.Empty;
-    public string Value { get; set; }
+    public string Value { get; set; } = string.Empty;
 }

src/Artemis.Storage/Entities/Profile/Abstract/DisplayConditionPartEntity.cs

@@ -1,8 +0,0 @@
-using System.Collections.Generic;
-
-namespace Artemis.Storage.Entities.Profile.Abstract;
-
-public abstract class DataModelConditionPartEntity
-{
-    public List<DataModelConditionPartEntity> Children { get; set; }
-}

src/Artemis.Storage/Entities/Profile/Abstract/RenderElementEntity.cs

@@ -8,8 +8,8 @@ public abstract class RenderElementEntity
     public Guid Id { get; set; }
     public Guid ParentId { get; set; }
 
-    public List<LayerEffectEntity> LayerEffects { get; set; }
+    public List<LayerEffectEntity> LayerEffects { get; set; } = new();
 
-    public IConditionEntity DisplayCondition { get; set; }
+    public IConditionEntity? DisplayCondition { get; set; }
-    public TimelineEntity Timeline { get; set; }
+    public TimelineEntity? Timeline { get; set; }
 }

src/Artemis.Storage/Entities/Profile/AdaptionHints/IAdaptionHintEntity.cs

@@ -1,5 +1,3 @@
 namespace Artemis.Storage.Entities.Profile.AdaptionHints;
 
-public interface IAdaptionHintEntity
+public interface IAdaptionHintEntity;
-{
-}

src/Artemis.Storage/Entities/Profile/Conditions/AlwaysOnConditionEntity.cs

@@ -2,6 +2,4 @@
 
 namespace Artemis.Storage.Entities.Profile.Conditions;
 
-public class AlwaysOnConditionEntity : IConditionEntity
+public class AlwaysOnConditionEntity : IConditionEntity;
-{
-}

src/Artemis.Storage/Entities/Profile/Conditions/EventConditionEntity.cs

@@ -8,6 +8,6 @@ public class EventConditionEntity : IConditionEntity
     public int TriggerMode { get; set; }
     public int OverlapMode { get; set; }
     public int ToggleOffMode { get; set; }
-    public DataModelPathEntity EventPath { get; set; }
+    public DataModelPathEntity? EventPath { get; set; }
-    public NodeScriptEntity Script { get; set; }
+    public NodeScriptEntity? Script { get; set; }
 }

src/Artemis.Storage/Entities/Profile/Conditions/IConditionEntity.cs

@@ -1,5 +1,3 @@
 namespace Artemis.Storage.Entities.Profile.Abstract;
 
-public interface IConditionEntity
+public interface IConditionEntity;
-{
-}

src/Artemis.Storage/Entities/Profile/Conditions/PlayOnceConditionEntity.cs

@@ -2,6 +2,4 @@
 
 namespace Artemis.Storage.Entities.Profile.Conditions;
 
-public class PlayOnceConditionEntity : IConditionEntity
+public class PlayOnceConditionEntity : IConditionEntity;
-{
-}

src/Artemis.Storage/Entities/Profile/Conditions/StaticConditionEntity.cs

@@ -7,5 +7,5 @@ public class StaticConditionEntity : IConditionEntity
 {
     public int PlayMode { get; set; }
     public int StopMode { get; set; }
-    public NodeScriptEntity Script { get; set; }
+    public NodeScriptEntity? Script { get; set; }
 }

src/Artemis.Storage/Entities/Profile/DataBindings/DataBindingEntity.cs

@@ -4,7 +4,6 @@ namespace Artemis.Storage.Entities.Profile.DataBindings;
 
 public class DataBindingEntity
 {
-    public string Identifier { get; set; }
     public bool IsEnabled { get; set; }
-    public NodeScriptEntity NodeScript { get; set; }
+    public NodeScriptEntity? NodeScript { get; set; }
 }

src/Artemis.Storage/Entities/Profile/DataModelPathEntity.cs

@@ -2,7 +2,7 @@
 
 public class DataModelPathEntity
 {
-    public string Path { get; set; }
+    public string Path { get; set; } = string.Empty;
-    public string DataModelId { get; set; }
+    public string? DataModelId { get; set; }
-    public string Type { get; set; }
+    public string? Type { get; set; }
 }

src/Artemis.Storage/Entities/Profile/FolderEntity.cs

@@ -1,5 +1,4 @@
 using System;
-using System.Collections.Generic;
 using Artemis.Storage.Entities.Profile.Abstract;
 using LiteDB;
 
@@ -7,18 +6,13 @@ namespace Artemis.Storage.Entities.Profile;
 
 public class FolderEntity : RenderElementEntity
 {
-    public FolderEntity()
-    {
-        LayerEffects = new List<LayerEffectEntity>();
-    }
-
     public int Order { get; set; }
-    public string Name { get; set; }
+    public string? Name { get; set; }
     public bool IsExpanded { get; set; }
     public bool Suspended { get; set; }
 
     [BsonRef("ProfileEntity")]
-    public ProfileEntity Profile { get; set; }
+    public ProfileEntity Profile { get; set; } = null!;
 
     public Guid ProfileId { get; set; }
 }

src/Artemis.Storage/Entities/Profile/KeyframeEntity.cs

@@ -6,6 +6,6 @@ public class KeyframeEntity
 {
     public TimeSpan Position { get; set; }
     public int Timeline { get; set; }
-    public string Value { get; set; }
+    public string Value { get; set; } = string.Empty;
     public int EasingFunction { get; set; }
 }

src/Artemis.Storage/Entities/Profile/LayerBrushEntity.cs

@@ -2,8 +2,8 @@
 
 public class LayerBrushEntity
 {
-    public string ProviderId { get; set; }
+    public string ProviderId { get; set; } = string.Empty;
-    public string BrushType { get; set; }
+    public string BrushType { get; set; } = string.Empty;
 
-    public PropertyGroupEntity PropertyGroup { get; set; }
+    public PropertyGroupEntity? PropertyGroup { get; set; }
 }

src/Artemis.Storage/Entities/Profile/LayerEffectEntity.cs

@@ -2,11 +2,11 @@
 
 public class LayerEffectEntity
 {
-    public string ProviderId { get; set; }
+    public string ProviderId { get; set; } = string.Empty;
-    public string EffectType { get; set; }
+    public string EffectType { get; set; } = string.Empty;
-    public string Name { get; set; }
+    public string Name { get; set; } = string.Empty;
     public bool HasBeenRenamed { get; set; }
     public int Order { get; set; }
 
-    public PropertyGroupEntity PropertyGroup { get; set; }
+    public PropertyGroupEntity? PropertyGroup { get; set; }
 }

src/Artemis.Storage/Entities/Profile/LayerEntity.cs

@@ -12,22 +12,21 @@ public class LayerEntity : RenderElementEntity
     {
         Leds = new List<LedEntity>();
         AdaptionHints = new List<IAdaptionHintEntity>();
-        LayerEffects = new List<LayerEffectEntity>();
     }
 
     public int Order { get; set; }
-    public string Name { get; set; }
+    public string? Name { get; set; }
     public bool Suspended { get; set; }
 
     public List<LedEntity> Leds { get; set; }
     public List<IAdaptionHintEntity> AdaptionHints { get; set; }
 
-    public PropertyGroupEntity GeneralPropertyGroup { get; set; }
+    public PropertyGroupEntity? GeneralPropertyGroup { get; set; }
-    public PropertyGroupEntity TransformPropertyGroup { get; set; }
+    public PropertyGroupEntity? TransformPropertyGroup { get; set; }
-    public LayerBrushEntity LayerBrush { get; set; }
+    public LayerBrushEntity? LayerBrush { get; set; }
 
     [BsonRef("ProfileEntity")]
-    public ProfileEntity Profile { get; set; }
+    public ProfileEntity Profile { get; set; } = null!;
 
     public Guid ProfileId { get; set; }
 }

src/Artemis.Storage/Entities/Profile/LedEntity.cs

@@ -5,8 +5,8 @@ namespace Artemis.Storage.Entities.Profile;
 
 public class LedEntity
 {
-    public string LedName { get; set; }
+    public string LedName { get; set; } = string.Empty;
-    public string DeviceIdentifier { get; set; }
+    public string DeviceIdentifier { get; set; } = string.Empty;
 
     public int? PhysicalLayout { get; set; }
 
@@ -14,7 +14,7 @@ public class LedEntity
 
     private sealed class LedEntityEqualityComparer : IEqualityComparer<LedEntity>
     {
-        public bool Equals(LedEntity x, LedEntity y)
+        public bool Equals(LedEntity? x, LedEntity? y)
         {
             if (ReferenceEquals(x, y))
                 return true;

src/Artemis.Storage/Entities/Profile/Nodes/NodeConnectionEntity.cs

@@ -20,12 +20,12 @@ public class NodeConnectionEntity
         TargetPinId = nodeConnectionEntity.TargetPinId;
     }
 
-    public string SourceType { get; set; }
+    public string SourceType { get; set; } = string.Empty;
     public Guid SourceNode { get; set; }
     public Guid TargetNode { get; set; }
     public int SourcePinCollectionId { get; set; }
     public int SourcePinId { get; set; }
-    public string TargetType { get; set; }
+    public string TargetType { get; set; } = string.Empty;
     public int TargetPinCollectionId { get; set; }
     public int TargetPinId { get; set; }
 }

src/Artemis.Storage/Entities/Profile/Nodes/NodeEntity.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 
@@ -28,15 +28,15 @@ public class NodeEntity
     }
 
     public Guid Id { get; set; }
-    public string Type { get; set; }
+    public string Type { get; set; } = string.Empty;
     public Guid PluginId { get; set; }
 
-    public string Name { get; set; }
+    public string Name { get; set; } = string.Empty;
-    public string Description { get; set; }
+    public string Description { get; set; } = string.Empty;
     public bool IsExitNode { get; set; }
     public double X { get; set; }
     public double Y { get; set; }
-    public string Storage { get; set; }
+    public string Storage { get; set; } = string.Empty;
 
     public List<NodePinCollectionEntity> PinCollections { get; set; }
 }

src/Artemis.Storage/Entities/Profile/Nodes/NodeScriptEntity.cs

@@ -10,8 +10,8 @@ public class NodeScriptEntity
         Connections = new List<NodeConnectionEntity>();
     }
 
-    public string Name { get; set; }
+    public string Name { get; set; } = string.Empty;
-    public string Description { get; set; }
+    public string Description { get; set; } = string.Empty;
 
     public List<NodeEntity> Nodes { get; set; }
     public List<NodeConnectionEntity> Connections { get; set; }

src/Artemis.Storage/Entities/Profile/ProfileCategoryEntity.cs

@@ -7,7 +7,7 @@ public class ProfileCategoryEntity
 {
     public Guid Id { get; set; }
 
-    public string Name { get; set; }
+    public string Name { get; set; } = string.Empty;
     public bool IsCollapsed { get; set; }
     public bool IsSuspended { get; set; }
     public int Order { get; set; }

src/Artemis.Storage/Entities/Profile/ProfileConfigurationEntity.cs

@@ -5,8 +5,8 @@ namespace Artemis.Storage.Entities.Profile;
 
 public class ProfileConfigurationEntity
 {
-    public string Name { get; set; }
+    public string Name { get; set; } = string.Empty;
-    public string MaterialIcon { get; set; }
+    public string? MaterialIcon { get; set; }
     public Guid FileIconId { get; set; }
     public int IconType { get; set; }
     public bool IconFill { get; set; }
@@ -14,13 +14,13 @@ public class ProfileConfigurationEntity
 
     public bool IsSuspended { get; set; }
     public int ActivationBehaviour { get; set; }
-    public NodeScriptEntity ActivationCondition { get; set; }
+    public NodeScriptEntity? ActivationCondition { get; set; }
 
     public int HotkeyMode { get; set; }
-    public ProfileConfigurationHotkeyEntity EnableHotkey { get; set; }
+    public ProfileConfigurationHotkeyEntity? EnableHotkey { get; set; }
-    public ProfileConfigurationHotkeyEntity DisableHotkey { get; set; }
+    public ProfileConfigurationHotkeyEntity? DisableHotkey { get; set; }
 
-    public string ModuleId { get; set; }
+    public string? ModuleId { get; set; }
 
     public Guid ProfileCategoryId { get; set; }
     public Guid ProfileId { get; set; }

src/Artemis.Storage/Entities/Profile/ProfileEntity.cs

@@ -16,7 +16,7 @@ public class ProfileEntity
 
     public Guid Id { get; set; }
 
-    public string Name { get; set; }
+    public string Name { get; set; } = string.Empty;
     public bool IsFreshImport { get; set; }
 
     public List<FolderEntity> Folders { get; set; }
@@ -28,7 +28,7 @@ public class ProfileEntity
         Guid oldGuid = Id;
         Id = guid;
 
-        FolderEntity rootFolder = Folders.FirstOrDefault(f => f.ParentId == oldGuid);
+        FolderEntity? rootFolder = Folders.FirstOrDefault(f => f.ParentId == oldGuid);
         if (rootFolder != null)
             rootFolder.ParentId = Id;
     }

src/Artemis.Storage/Entities/Profile/PropertyEntity.cs

@@ -5,10 +5,10 @@ namespace Artemis.Storage.Entities.Profile;
 
 public class PropertyEntity
 {
-    public string Identifier { get; set; }
+    public string Identifier { get; set; } = string.Empty;
-    public string Value { get; set; }
+    public string Value { get; set; } = string.Empty;
     public bool KeyframesEnabled { get; set; }
 
-    public DataBindingEntity DataBinding { get; set; }
+    public DataBindingEntity? DataBinding { get; set; }
     public List<KeyframeEntity> KeyframeEntities { get; set; } = new();
 }

src/Artemis.Storage/Entities/Profile/PropertyGroupEntity.cs

@@ -4,7 +4,7 @@ namespace Artemis.Storage.Entities.Profile;
 
 public class PropertyGroupEntity
 {
-    public string Identifier { get; set; }
+    public string Identifier { get; set; } = string.Empty;
     public List<PropertyEntity> Properties { get; set; } = new();
     public List<PropertyGroupEntity> PropertyGroups { get; set; } = new();
 }

src/Artemis.Storage/Entities/Surface/DeviceEntity.cs

@@ -11,8 +11,8 @@ public class DeviceEntity
         Categories = new List<int>();
     }
 
-    public string Id { get; set; }
+    public string Id { get; set; } = string.Empty;
-    public string DeviceProvider { get; set; }
+    public string DeviceProvider { get; set; } = string.Empty;
     public float X { get; set; }
     public float Y { get; set; }
     public float Rotation { get; set; }
@@ -24,9 +24,9 @@ public class DeviceEntity
     public bool IsEnabled { get; set; }
     
     public int PhysicalLayout { get; set; }
-    public string LogicalLayout { get; set; }
+    public string? LogicalLayout { get; set; }
-    public string LayoutType { get; set; }
+    public string? LayoutType { get; set; }
-    public string LayoutParameter { get; set; }
+    public string? LayoutParameter { get; set; }
 
     public List<DeviceInputIdentifierEntity> InputIdentifiers { get; set; }
     public List<InputMappingEntity> InputMappings { get; set; }
@@ -41,6 +41,6 @@ public class InputMappingEntity
 
 public class DeviceInputIdentifierEntity
 {
-    public string InputProvider { get; set; }
+    public string InputProvider { get; set; } = string.Empty;
-    public object Identifier { get; set; }
+    public object Identifier { get; set; } = string.Empty;
 }

src/Artemis.Storage/Entities/Workshop/EntryEntity.cs

@@ -10,13 +10,12 @@ public class EntryEntity
     public long EntryId { get; set; }
     public int EntryType { get; set; }
     
-    public string Author { get; set; } 
+    public string Author { get; set; }  = string.Empty;
     public string Name { get; set; } = string.Empty;
-    public string Summary { get; set; } = string.Empty;
 
     public long ReleaseId { get; set; }
-    public string ReleaseVersion { get; set; }
+    public string ReleaseVersion { get; set; } = string.Empty;
     public DateTimeOffset InstalledAt { get; set; }
 
-    public Dictionary<string,object> Metadata { get; set; }
+    public Dictionary<string,object>? Metadata { get; set; }
 }

src/Artemis.Storage/Migrations/IProfileMigration.cs

@@ -0,0 +1,11 @@
+using LiteDB;
+using Newtonsoft.Json.Linq;
+
+namespace Artemis.Storage.Migrations;
+
+internal interface IProfileMigration
+{
+    int Version { get; }
+    void Migrate(JObject profileJson);
+    void Migrate(BsonDocument profileBson);
+}

src/Artemis.Storage/Migrations/Profile/M0001NodeProviders.cs

@@ -0,0 +1,97 @@
+using LiteDB;
+using Newtonsoft.Json.Linq;
+
+namespace Artemis.Storage.Migrations.Profile;
+
+/// <summary>
+/// Migrates nodes to be provider-based.
+/// This requires giving them a ProviderId and updating the their namespaces to match the namespace of the new plugin. 
+/// </summary>
+internal class M0001NodeProviders : IProfileMigration
+{
+    /// <inheritdoc />
+    public int Version => 1;
+
+    /// <inheritdoc />
+    public void Migrate(JObject profileJson)
+    {
+        JArray? folders = (JArray?) profileJson["Folders"]?["$values"];
+        JArray? layers = (JArray?) profileJson["Layers"]?["$values"];
+
+        if (folders != null)
+        {
+            foreach (JToken folder in folders)
+            {
+                MigrateProfileElement(folder);
+            }
+        }
+
+        if (layers != null)
+        {
+            foreach (JToken layer in layers)
+            {
+                MigrateProfileElement(layer);
+                MigratePropertyGroup(layer["GeneralPropertyGroup"]);
+                MigratePropertyGroup(layer["TransformPropertyGroup"]);
+                MigratePropertyGroup(layer["LayerBrush"]?["PropertyGroup"]);
+            }
+        }
+    }
+
+    /// <inheritdoc />
+    public void Migrate(BsonDocument profileBson)
+    {
+        throw new System.NotImplementedException();
+    }
+
+    private void MigrateProfileElement(JToken profileElement)
+    {
+        JArray? layerEffects = (JArray?) profileElement["LayerEffects"]?["$values"];
+        if (layerEffects != null)
+        {
+            foreach (JToken layerEffect in layerEffects)
+                MigratePropertyGroup(layerEffect["PropertyGroup"]);
+        }
+
+        JToken? displayCondition = profileElement["DisplayCondition"];
+        if (displayCondition != null)
+            MigrateNodeScript(displayCondition["Script"]);
+    }
+
+    private void MigratePropertyGroup(JToken? propertyGroup)
+    {
+        if (propertyGroup == null || !propertyGroup.HasValues)
+            return;
+
+        JArray? properties = (JArray?) propertyGroup["Properties"]?["$values"];
+        JArray? propertyGroups = (JArray?) propertyGroup["PropertyGroups"]?["$values"];
+
+        if (properties != null)
+        {
+            foreach (JToken property in properties)
+                MigrateNodeScript(property["DataBinding"]?["NodeScript"]);
+        }
+
+        if (propertyGroups != null)
+        {
+            foreach (JToken childPropertyGroup in propertyGroups)
+                MigratePropertyGroup(childPropertyGroup);
+        }
+    }
+
+    private void MigrateNodeScript(JToken? nodeScript)
+    {
+        if (nodeScript == null || !nodeScript.HasValues)
+            return;
+
+        JArray? nodes = (JArray?) nodeScript["Nodes"]?["$values"];
+        if (nodes == null)
+            return;
+
+        foreach (JToken node in nodes)
+        {
+            node["Type"] = node["Type"]?.Value<string>()?.Replace("Artemis.VisualScripting.Nodes", "Artemis.Plugins.Nodes.General.Nodes");
+            node["ProviderId"] = "Artemis.Plugins.Nodes.General.GeneralNodesProvider-d9e1ee78";
+        }
+    }
+}

src/Artemis.Storage/Migrations/Storage/M0021GradientNodes.cs

@@ -12,9 +12,9 @@ public class M0021GradientNodes : IStorageMigration
 {
     private void MigrateDataBinding(PropertyEntity property)
     {
-        NodeScriptEntity script = property.DataBinding.NodeScript;
+        NodeScriptEntity? script = property.DataBinding?.NodeScript;
-        NodeEntity exitNode = script.Nodes.FirstOrDefault(s => s.IsExitNode);
+        NodeEntity? exitNode = script?.Nodes.FirstOrDefault(s => s.IsExitNode);
-        if (exitNode == null)
+        if (script == null || exitNode == null)
             return;
 
         // Create a new node at the same position of the exit node
@@ -59,8 +59,11 @@ public class M0021GradientNodes : IStorageMigration
         exitNode.Y += 30;
     }
 
-    private void MigrateDataBinding(PropertyGroupEntity propertyGroup)
+    private void MigrateDataBinding(PropertyGroupEntity? propertyGroup)
     {
+        if (propertyGroup == null)
+            return;
+        
         foreach (PropertyGroupEntity propertyGroupPropertyGroup in propertyGroup.PropertyGroups)
             MigrateDataBinding(propertyGroupPropertyGroup);
 
@@ -80,7 +83,7 @@ public class M0021GradientNodes : IStorageMigration
         foreach (ProfileEntity profileEntity in profiles)
         {
             foreach (LayerEntity layer in profileEntity.Layers.Where(le => le.LayerBrush != null))
-                MigrateDataBinding(layer.LayerBrush.PropertyGroup);
+                MigrateDataBinding(layer.LayerBrush?.PropertyGroup);
 
             repository.Update(profileEntity);
         }

src/Artemis.Storage/Migrations/Storage/M0022TransitionNodes.cs

@@ -10,7 +10,7 @@ namespace Artemis.Storage.Migrations;
 
 public class M0022TransitionNodes : IStorageMigration
 {
-    private void MigrateNodeScript(NodeScriptEntity nodeScript)
+    private void MigrateNodeScript(NodeScriptEntity? nodeScript)
     {
         if (nodeScript == null)
             return;
@@ -28,7 +28,7 @@ public class M0022TransitionNodes : IStorageMigration
         }
     }
 
-    private void MigratePropertyGroup(PropertyGroupEntity propertyGroup)
+    private void MigratePropertyGroup(PropertyGroupEntity? propertyGroup)
     {
         if (propertyGroup == null)
             return;
@@ -39,7 +39,7 @@ public class M0022TransitionNodes : IStorageMigration
             MigrateNodeScript(property.DataBinding?.NodeScript);
     }
 
-    private void MigrateDisplayCondition(IConditionEntity conditionEntity)
+    private void MigrateDisplayCondition(IConditionEntity? conditionEntity)
     {
         if (conditionEntity is EventConditionEntity eventConditionEntity)
             MigrateNodeScript(eventConditionEntity.Script);
@@ -70,14 +70,14 @@ public class M0022TransitionNodes : IStorageMigration
                 MigratePropertyGroup(layer.GeneralPropertyGroup);
                 MigratePropertyGroup(layer.TransformPropertyGroup);
                 foreach (LayerEffectEntity layerEffectEntity in layer.LayerEffects)
-                    MigratePropertyGroup(layerEffectEntity?.PropertyGroup);
+                    MigratePropertyGroup(layerEffectEntity.PropertyGroup);
                 MigrateDisplayCondition(layer.DisplayCondition);
             }
 
             foreach (FolderEntity folder in profileEntity.Folders)
             {
                 foreach (LayerEffectEntity folderLayerEffect in folder.LayerEffects)
-                    MigratePropertyGroup(folderLayerEffect?.PropertyGroup);
+                    MigratePropertyGroup(folderLayerEffect.PropertyGroup);
                 MigrateDisplayCondition(folder.DisplayCondition);
             }
 

src/Artemis.Storage/Repositories/DeviceRepository.cs

@@ -25,7 +25,7 @@ internal class DeviceRepository : IDeviceRepository
         _repository.Delete<DeviceEntity>(deviceEntity.Id);
     }
 
-    public DeviceEntity Get(string id)
+    public DeviceEntity? Get(string id)
     {
         return _repository.FirstOrDefault<DeviceEntity>(s => s.Id == id);
     }

src/Artemis.Storage/Repositories/EntryRepository.cs

@@ -27,12 +27,12 @@ internal class EntryRepository : IEntryRepository
         _repository.Delete<EntryEntity>(entryEntity.Id);
     }
 
-    public EntryEntity Get(Guid id)
+    public EntryEntity? Get(Guid id)
     {
         return _repository.FirstOrDefault<EntryEntity>(s => s.Id == id);
     }
 
-    public EntryEntity GetByEntryId(long entryId)
+    public EntryEntity? GetByEntryId(long entryId)
     {
         return _repository.FirstOrDefault<EntryEntity>(s => s.EntryId == entryId);
     }

src/Artemis.Storage/Repositories/Interfaces/IDeviceRepository.cs

@@ -7,7 +7,7 @@ public interface IDeviceRepository : IRepository
 {
     void Add(DeviceEntity deviceEntity);
     void Remove(DeviceEntity deviceEntity);
-    DeviceEntity Get(string id);
+    DeviceEntity? Get(string id);
     List<DeviceEntity> GetAll();
     void Save(DeviceEntity deviceEntity);
     void Save(IEnumerable<DeviceEntity> deviceEntities);

src/Artemis.Storage/Repositories/Interfaces/IEntryRepository.cs

@@ -8,8 +8,8 @@ public interface IEntryRepository : IRepository
 {
     void Add(EntryEntity entryEntity);
     void Remove(EntryEntity entryEntity);
-    EntryEntity Get(Guid id);
+    EntryEntity? Get(Guid id);
-    EntryEntity GetByEntryId(long entryId);
+    EntryEntity? GetByEntryId(long entryId);
     List<EntryEntity> GetAll();
     void Save(EntryEntity entryEntity);
     void Save(IEnumerable<EntryEntity> entryEntities);

src/Artemis.Storage/Repositories/Interfaces/IPluginRepository.cs

@@ -6,12 +6,12 @@ namespace Artemis.Storage.Repositories.Interfaces;
 public interface IPluginRepository : IRepository
 {
     void AddPlugin(PluginEntity pluginEntity);
-    PluginEntity GetPluginByGuid(Guid pluginGuid);
+    PluginEntity? GetPluginByGuid(Guid pluginGuid);
     void SavePlugin(PluginEntity pluginEntity);
 
     void AddSetting(PluginSettingEntity pluginSettingEntity);
-    PluginSettingEntity GetSettingByGuid(Guid pluginGuid);
+    PluginSettingEntity? GetSettingByGuid(Guid pluginGuid);
-    PluginSettingEntity GetSettingByNameAndGuid(string name, Guid pluginGuid);
+    PluginSettingEntity? GetSettingByNameAndGuid(string name, Guid pluginGuid);
     void SaveSetting(PluginSettingEntity pluginSettingEntity);
     void RemoveSettings(Guid pluginGuid);
 }

src/Artemis.Storage/Repositories/Interfaces/IProfileCategoryRepository.cs

@@ -10,8 +10,8 @@ public interface IProfileCategoryRepository : IRepository
     void Add(ProfileCategoryEntity profileCategoryEntity);
     void Remove(ProfileCategoryEntity profileCategoryEntity);
     List<ProfileCategoryEntity> GetAll();
-    ProfileCategoryEntity Get(Guid id);
+    ProfileCategoryEntity? Get(Guid id);
-    Stream GetProfileIconStream(Guid id);
+    Stream? GetProfileIconStream(Guid id);
     void SaveProfileIconStream(ProfileConfigurationEntity profileConfigurationEntity, Stream stream);
     ProfileCategoryEntity IsUnique(string name, Guid? id);
     void Save(ProfileCategoryEntity profileCategoryEntity);

src/Artemis.Storage/Repositories/Interfaces/IProfileRepository.cs

@@ -9,6 +9,6 @@ public interface IProfileRepository : IRepository
     void Add(ProfileEntity profileEntity);
     void Remove(ProfileEntity profileEntity);
     List<ProfileEntity> GetAll();
-    ProfileEntity Get(Guid id);
+    ProfileEntity? Get(Guid id);
     void Save(ProfileEntity profileEntity);
 }

src/Artemis.Storage/Repositories/Interfaces/IRepository.cs

@@ -1,5 +1,3 @@
 namespace Artemis.Storage.Repositories.Interfaces;
 
-public interface IRepository
+public interface IRepository;
-{
-}

src/Artemis.Storage/Repositories/PluginRepository.cs

@@ -21,7 +21,7 @@ internal class PluginRepository : IPluginRepository
         _repository.Insert(pluginEntity);
     }
 
-    public PluginEntity GetPluginByGuid(Guid pluginGuid)
+    public PluginEntity? GetPluginByGuid(Guid pluginGuid)
     {
         return _repository.FirstOrDefault<PluginEntity>(p => p.Id == pluginGuid);
     }
@@ -37,12 +37,12 @@ internal class PluginRepository : IPluginRepository
         _repository.Insert(pluginSettingEntity);
     }
 
-    public PluginSettingEntity GetSettingByGuid(Guid pluginGuid)
+    public PluginSettingEntity? GetSettingByGuid(Guid pluginGuid)
     {
         return _repository.FirstOrDefault<PluginSettingEntity>(p => p.PluginGuid == pluginGuid);
     }
 
-    public PluginSettingEntity GetSettingByNameAndGuid(string name, Guid pluginGuid)
+    public PluginSettingEntity? GetSettingByNameAndGuid(string name, Guid pluginGuid)
     {
         return _repository.FirstOrDefault<PluginSettingEntity>(p => p.Name == name && p.PluginGuid == pluginGuid);
     }

src/Artemis.Storage/Repositories/ProfileCategoryRepository.cs

@@ -34,7 +34,7 @@ internal class ProfileCategoryRepository : IProfileCategoryRepository
         return _repository.Query<ProfileCategoryEntity>().ToList();
     }
 
-    public ProfileCategoryEntity Get(Guid id)
+    public ProfileCategoryEntity? Get(Guid id)
     {
         return _repository.FirstOrDefault<ProfileCategoryEntity>(p => p.Id == id);
     }
@@ -52,7 +52,7 @@ internal class ProfileCategoryRepository : IProfileCategoryRepository
         _repository.Upsert(profileCategoryEntity);
     }
 
-    public Stream GetProfileIconStream(Guid id)
+    public Stream? GetProfileIconStream(Guid id)
     {
         if (!_profileIcons.Exists(id))
             return null;

src/Artemis.Storage/Repositories/ProfileRepository.cs

@@ -31,7 +31,7 @@ internal class ProfileRepository : IProfileRepository
         return _repository.Query<ProfileEntity>().ToList();
     }
 
-    public ProfileEntity Get(Guid id)
+    public ProfileEntity? Get(Guid id)
     {
         return _repository.FirstOrDefault<ProfileEntity>(p => p.Id == id);
     }