first commit

services/csharp/example/Features/Todos/CreateTodo.cs

@@ -0,0 +1,18 @@
+using MediatR;
+using SequenceAuth.Example.Domain;
+using SequenceAuth.Example.Infrastructure;
+
+namespace SequenceAuth.Example.Features.Todos;
+
+public record CreateTodoCommand(Guid UserId, string Title) : IRequest<TodoItem>;
+
+public class CreateTodoCommandHandler(AppDbContext dbContext) : IRequestHandler<CreateTodoCommand, TodoItem>
+{
+    public async Task<TodoItem> Handle(CreateTodoCommand request, CancellationToken cancellationToken)
+    {
+        var todo = new TodoItem(Guid.NewGuid(), request.UserId, request.Title, TodoStatus.Pending);
+        dbContext.Todos.Add(todo);
+        await dbContext.SaveChangesAsync(cancellationToken);
+        return todo;
+    }
+}