Fix couple user preferences aspects

Author: Bardin08

src/Core/DependencyInjection.cs

@@ -11,5 +11,6 @@ public static void AddGatewayCore(this IServiceCollection services, IConfigurati
     {
         services.AddScoped<ITemplatesService, TemplatesService>();
         services.AddScoped<INotificationsService, NotificationService>();
+        services.AddScoped<IUserPreferencesService, UserPreferencesService>();
     }
 }

src/Core/Mappers/UserPreferencesMapper.cs

@@ -4,7 +4,7 @@
 
 namespace Core.Mappers;
 
-public class UserPreferencesMapper
+public static class UserPreferencesMapper
 {
     internal static UserPreferencesDto ToDto(UserPreferences e)
     {
@@ -17,44 +17,41 @@ internal static UserPreferencesDto ToDto(UserPreferences e)
                 Enabled = d.Value.Enabled,
                 Description = d.Value.Description,
                 Metadata = d.Value.Metadata
-            }) ?? []
+            })
         };
     }
 
     public static UserPreferences UpdateEntity(UserPreferences e, UserPreferencesDto dto)
     {
         var channels = e.Channels;
-        if (channels.Count > 0)
+        foreach (var ch in dto.Channels)
         {
-            foreach (var ch in dto.Channels)
+            if (channels.TryGetValue(ch.Key, out var channel))
             {
-                if (channels.TryGetValue(ch.Key, out var channel))
-                {
-                    channel.Enabled = ch.Value.Enabled;
-                    channel.Description = ch.Value.Description;
-                    channel.Metadata = ch.Value.Metadata;
-                }
-                else
+                channel.Enabled = ch.Value.Enabled;
+                channel.Description = ch.Value.Description;
+                channel.Metadata = ch.Value.Metadata;
+            }
+            else
+            {
+                channels.Add(ch.Key, new ChannelDescriptorBase
                 {
-                    channels.Add(ch.Key, new ChannelDescriptorBase
-                    {
-                        Enabled = ch.Value.Enabled,
-                        Description = ch.Value.Description,
-                        Metadata = ch.Value.Metadata
-                    });
-                }
+                    Enabled = ch.Value.Enabled,
+                    Description = ch.Value.Description,
+                    Metadata = ch.Value.Metadata
+                });
             }
         }
-
+        
         return e with { LastUpdated = DateTimeOffset.UtcNow, Channels = channels };
     }
-
+    
     public static UserPreferences ToEntity(UserPreferencesDto dto)
     {
         var id = string.IsNullOrEmpty(dto.Id)
             ? ObjectId.GenerateNewId()
             : ObjectId.Parse(dto.Id);
-
+        
         return new UserPreferences
         {
             Id = id,

src/Core/Services/UserPreferencesService.cs

@@ -13,7 +13,7 @@ namespace Core.Services;
 
 public class UserPreferencesService(
     IUserAnalyticsClient userAnalyticsClient,
-    IMongoRepository<UserPreferences> userPreferencesRepository,
+    IUserPreferencesRepository userPreferencesRepository,
     ILogger<UserPreferencesService> logger) : IUserPreferencesService
 {
     private readonly IUserAnalyticsClient _userAnalyticsClient = userAnalyticsClient;
@@ -64,7 +64,7 @@ public async Task<ErrorOr<UserPreferencesDto>> UpdateUserPreferences(
 
             // here user mail should be sent
             await _userAnalyticsClient.SendUserAction(
-                userPreferences.UserId, "UserPreferencesCreated", "recipient", "User's Preferences", ct);
+                userPreferences.UserId, "UserPreferencesUpdated", "recipient", "User's Preferences", ct);
 
             return UserPreferencesMapper.ToDto(entity);
         }