Перепиливание под чистый DDD

backend/src/Modules/Profiles/Domain/Profile.cs

@@ -0,0 +1,52 @@
+using Knot.Shared.Kernel;
+using System;
+
+namespace Knot.Modules.Profiles.Domain;
+
+public sealed class Profile : AggregateRoot<Guid>
+{
+    public string Username { get; private set; }
+    public string DisplayName { get; private set; }
+    public string? Bio { get; private set; }
+    public string? Avatar { get; private set; }
+    public DateTime? Birthday { get; private set; }
+    public bool HideStoryViews { get; private set; }
+    public string Profilename => Username;
+    public string Name => DisplayName;
+    public string AvatarUrl => Avatar;
+    public bool IsPrivate => false;
+    public DateTime CreatedAt { get; private set; } = DateTime.UtcNow;
+    public int FollowersCount => 0;
+    public int FollowingCount => 0;
+    public int FriendsCount => 0;
+
+    private Profile(Guid id, string username, string displayName, string? bio = null)
+        : base(id)
+    {
+        Username = username;
+        DisplayName = displayName;
+        Bio = bio;
+    }
+
+    public static Profile Create(Guid userId, string username, string displayName, string? bio = null)
+    {
+        return new Profile(userId, username, displayName, bio);
+    }
+
+    public void UpdateProfile(string displayName, string? bio, DateTime? birthday)
+    {
+        DisplayName = displayName;
+        Bio = bio;
+        Birthday = birthday;
+    }
+
+    public void UpdateAvatar(string? avatarUrl)
+    {
+        Avatar = avatarUrl;
+    }
+
+    public void UpdateSettings(bool hideStoryViews)
+    {
+        HideStoryViews = hideStoryViews;
+    }
+}

backend/src/Modules/Profiles/Domain/ProfilesErrors.cs

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+namespace Knot.Modules.Profiles.Domain;
+using Knot.Shared.Kernel;
+public static class ProfilesErrors
+{
+    public static readonly Error ProfileNotFound = new("Profile.NotFound", "Profile not found");
+}
+public static class IdentityErrors
+{
+    public static readonly Error UserNotFound = new("Profile.NotFound", "Profile not found");
+}