init

Femto.Common/Attributes/EventTypeAttribute.cs

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+namespace Femto.Common.Attributes;
+
+[AttributeUsage(AttributeTargets.Class, Inherited = false)]
+public class EventTypeAttribute(string name) : Attribute
+{
+    public string Name { get; } = name;
+}

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);

Femto.Common/Femto.Common.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net9.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <PackageReference Include="MediatR" Version="12.5.0" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <Folder Include="Infrastructure\" />
+    </ItemGroup>
+</Project>

Femto.Common/Integration/IIntegrationEvent.cs

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+using MediatR;
+
+namespace Femto.Common.Integration;
+
+public interface IIntegrationEvent : INotification
+{
+    public Guid EventId { get; }
+}