init

Femto.Common/Domain/DomainException.cs

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+namespace Femto.Common.Domain;
+
+public class DomainException(string message) : Exception(message);

Femto.Common/Domain/Entity.cs

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+namespace Femto.Common.Domain;
+
+public abstract class Entity
+{
+    private readonly ICollection<IDomainEvent> _domainEvents = [];
+
+    protected void AddDomainEvent(IDomainEvent evt)
+    {
+        this._domainEvents.Add(evt);
+    }
+
+    public IList<IDomainEvent> DomainEvents => this._domainEvents.ToList();
+    
+    public void ClearDomainEvents() => this._domainEvents.Clear();
+
+    protected void CheckRule(IRule rule)
+    {
+        if (!rule.Check())
+            throw new RuleBrokenException(rule.Message);
+    }
+}

Femto.Common/Domain/IDomainEvent.cs

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+using MediatR;
+
+namespace Femto.Common.Domain;
+
+public interface IDomainEvent : INotification
+{
+    public Guid EventId { get; }
+}
+
+public abstract record DomainEvent : IDomainEvent
+{
+    public Guid EventId { get; } = Guid.NewGuid();
+}

Femto.Common/Domain/IRule.cs

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+namespace Femto.Common.Domain;
+
+public interface IRule
+{
+    bool Check();
+    
+    string Message { get; }
+}

Femto.Common/Domain/RuleBrokenException.cs

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+namespace Femto.Common.Domain;
+
+public class RuleBrokenException(string message) : DomainException(message);