misc

Femto.Modules.Auth/Application/Interface/Register/RegisterCommandHandler.cs

@@ -0,0 +1,35 @@
+using Femto.Common.Domain;
+using Femto.Modules.Auth.Application.Dto;
+using Femto.Modules.Auth.Data;
+using Femto.Modules.Auth.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace Femto.Modules.Auth.Application.Interface.Register;
+
+internal class RegisterCommandHandler(AuthContext context) : ICommandHandler<RegisterCommand, RegisterResult>
+{
+    public async Task<RegisterResult> Handle(RegisterCommand request, CancellationToken cancellationToken)
+    {
+        var now = DateTimeOffset.UtcNow;
+        var code = await context.SignupCodes
+            .Where(c => c.Code == request.SignupCode)
+            .Where(c => c.ExpiresAt == null || c.ExpiresAt > now)
+            .Where(c => c.RedeemingUserId == null)
+            .SingleOrDefaultAsync(cancellationToken);
+
+        if (code is null)
+            throw new DomainError("invalid signup code");
+        
+        var user = new UserIdentity(request.Username);
+        
+        user.SetPassword(request.Password);
+
+        var session = user.StartNewSession();
+        
+        await context.AddAsync(user, cancellationToken);
+        
+        code.Redeem(user.Id);
+        
+        return new(new Session(session.Id, session.Expires), new UserInfo(user));    
+    }
+}