presense/Demo/Domain/UseCase/UserUseCase.cs

using Demo.Data.Repository;
using Demo.Domain.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;


public class UserUseCase
{
    private List<User> _users = new List<User>();
    private UserRepositoryImpl userRepositoryImpl;
    private GroupRepositoryImpl groupRepositoryImpl;

    public UserUseCase(UserRepositoryImpl userRepositoryImpl, GroupRepositoryImpl groupRepositoryImpl)
    {
        this.userRepositoryImpl = userRepositoryImpl;
        this.groupRepositoryImpl = groupRepositoryImpl;
    }

    public IEnumerable<User> GetAllUsers() => _users;

    public User FindUserByGuid(Guid id) => _users.FirstOrDefault(u => u. Guid == id);

    public void DeleteUserByGuid(Guid id)
    {
        var user = _users.FirstOrDefault(u => u.Guid == id);
        if (user != null)
            _users.Remove(user);
    }

    public void UpdateUserByGuid(Guid id, string newName)
    {
        var user = _users.FirstOrDefault(u => u.Guid == id);
        if (user != null)
            user.FIO = newName;
    }

    internal bool RemoveUserByGuid(Guid guidUser)
    {
        throw new NotImplementedException();
    }
}